1 # SPDX-License-Identifier: GPL-2.0 !! 1 config MIPS
2 # Select 32 or 64 bit !! 2 bool
3 config 64BIT !! 3 default y
4 bool "64-bit kernel" if "$(ARCH)" = "x !! 4 select HAVE_GENERIC_DMA_COHERENT
5 default "$(ARCH)" != "i386" !! 5 select HAVE_IDE
6 help !! 6 select HAVE_OPROFILE
7 Say yes to build a 64-bit kernel - f !! 7 select HAVE_PERF_EVENTS
8 Say no to build a 32-bit kernel - fo !! 8 select PERF_USE_VMALLOC
9 <<
10 config X86_32 <<
11 def_bool y <<
12 depends on !64BIT <<
13 # Options that are inherently 32-bit k <<
14 select ARCH_WANT_IPC_PARSE_VERSION <<
15 select CLKSRC_I8253 <<
16 select CLONE_BACKWARDS <<
17 select GENERIC_VDSO_32 <<
18 select HAVE_DEBUG_STACKOVERFLOW <<
19 select KMAP_LOCAL <<
20 select MODULES_USE_ELF_REL <<
21 select OLD_SIGACTION <<
22 select ARCH_SPLIT_ARG64 <<
23 <<
24 config X86_64 <<
25 def_bool y <<
26 depends on 64BIT <<
27 # Options that are inherently 64-bit k <<
28 select ARCH_HAS_GIGANTIC_PAGE <<
29 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
30 select ARCH_SUPPORTS_PER_VMA_LOCK <<
31 select ARCH_SUPPORTS_HUGE_PFNMAP if TR <<
32 select HAVE_ARCH_SOFT_DIRTY <<
33 select MODULES_USE_ELF_RELA <<
34 select NEED_DMA_MAP_STATE <<
35 select SWIOTLB <<
36 select ARCH_HAS_ELFCORE_COMPAT <<
37 select ZONE_DMA32 <<
38 select EXECMEM if DYNAMIC_FTRACE <<
39 <<
40 config FORCE_DYNAMIC_FTRACE <<
41 def_bool y <<
42 depends on X86_32 <<
43 depends on FUNCTION_TRACER <<
44 select DYNAMIC_FTRACE <<
45 help <<
46 We keep the static function tracing <<
47 in order to test the non static func <<
48 generic code, as other architectures <<
49 only need to keep it around for x86_ <<
50 for x86_32. For x86_32, force DYNAMI <<
51 # <<
52 # Arch settings <<
53 # <<
54 # ( Note that options that are marked 'if X86_ <<
55 # ported to 32-bit as well. ) <<
56 # <<
57 config X86 <<
58 def_bool y <<
59 # <<
60 # Note: keep this list sorted alphabet <<
61 # <<
62 select ACPI_LEGACY_TABLES_LOOKUP <<
63 select ACPI_SYSTEM_POWER_STATES_SUPPOR <<
64 select ACPI_HOTPLUG_CPU <<
65 select ARCH_32BIT_OFF_T <<
66 select ARCH_CLOCKSOURCE_INIT <<
67 select ARCH_CONFIGURES_CPU_MITIGATIONS <<
68 select ARCH_CORRECT_STACKTRACE_ON_KRET <<
69 select ARCH_ENABLE_HUGEPAGE_MIGRATION <<
70 select ARCH_ENABLE_MEMORY_HOTPLUG if X <<
71 select ARCH_ENABLE_MEMORY_HOTREMOVE if <<
72 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if <<
73 select ARCH_ENABLE_THP_MIGRATION if X8 <<
74 select ARCH_HAS_ACPI_TABLE_UPGRADE <<
75 select ARCH_HAS_CACHE_LINE_SIZE <<
76 select ARCH_HAS_CPU_CACHE_INVALIDATE_M <<
77 select ARCH_HAS_CPU_FINALIZE_INIT <<
78 select ARCH_HAS_CPU_PASID <<
79 select ARCH_HAS_CURRENT_STACK_POINTER <<
80 select ARCH_HAS_DEBUG_VIRTUAL <<
81 select ARCH_HAS_DEBUG_VM_PGTABLE <<
82 select ARCH_HAS_DEVMEM_IS_ALLOWED <<
83 select ARCH_HAS_DMA_OPS <<
84 select ARCH_HAS_EARLY_DEBUG <<
85 select ARCH_HAS_ELF_RANDOMIZE <<
86 select ARCH_HAS_FAST_MULTIPLIER <<
87 select ARCH_HAS_FORTIFY_SOURCE <<
88 select ARCH_HAS_GCOV_PROFILE_ALL <<
89 select ARCH_HAS_KCOV <<
90 select ARCH_HAS_KERNEL_FPU_SUPPORT <<
91 select ARCH_HAS_MEM_ENCRYPT <<
92 select ARCH_HAS_MEMBARRIER_SYNC_CORE <<
93 select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS <<
94 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
95 select ARCH_HAS_PMEM_API <<
96 select ARCH_HAS_PTE_DEVMAP <<
97 select ARCH_HAS_PTE_SPECIAL <<
98 select ARCH_HAS_HW_PTE_YOUNG <<
99 select ARCH_HAS_NONLEAF_PMD_YOUNG <<
100 select ARCH_HAS_UACCESS_FLUSHCACHE <<
101 select ARCH_HAS_COPY_MC <<
102 select ARCH_HAS_SET_MEMORY <<
103 select ARCH_HAS_SET_DIRECT_MAP <<
104 select ARCH_HAS_STRICT_KERNEL_RWX <<
105 select ARCH_HAS_STRICT_MODULE_RWX <<
106 select ARCH_HAS_SYNC_CORE_BEFORE_USERM <<
107 select ARCH_HAS_SYSCALL_WRAPPER <<
108 select ARCH_HAS_UBSAN <<
109 select ARCH_HAS_DEBUG_WX <<
110 select ARCH_HAS_ZONE_DMA_SET if EXPERT <<
111 select ARCH_HAVE_NMI_SAFE_CMPXCHG <<
112 select ARCH_HAVE_EXTRA_ELF_NOTES <<
113 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL <<
114 select ARCH_MIGHT_HAVE_ACPI_PDC <<
115 select ARCH_MIGHT_HAVE_PC_PARPORT <<
116 select ARCH_MIGHT_HAVE_PC_SERIO <<
117 select ARCH_STACKWALK <<
118 select ARCH_SUPPORTS_ACPI <<
119 select ARCH_SUPPORTS_ATOMIC_RMW <<
120 select ARCH_SUPPORTS_DEBUG_PAGEALLOC <<
121 select ARCH_SUPPORTS_PAGE_TABLE_CHECK <<
122 select ARCH_SUPPORTS_NUMA_BALANCING <<
123 select ARCH_SUPPORTS_KMAP_LOCAL_FORCE_ <<
124 select ARCH_SUPPORTS_CFI_CLANG <<
125 select ARCH_USES_CFI_TRAPS <<
126 select ARCH_SUPPORTS_LTO_CLANG <<
127 select ARCH_SUPPORTS_LTO_CLANG_THIN <<
128 select ARCH_SUPPORTS_RT <<
129 select ARCH_USE_BUILTIN_BSWAP <<
130 select ARCH_USE_CMPXCHG_LOCKREF <<
131 select ARCH_USE_MEMTEST <<
132 select ARCH_USE_QUEUED_RWLOCKS <<
133 select ARCH_USE_QUEUED_SPINLOCKS <<
134 select ARCH_USE_SYM_ANNOTATIONS <<
135 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU <<
136 select ARCH_WANT_DEFAULT_BPF_JIT <<
137 select ARCH_WANTS_DYNAMIC_TASK_STRUCT <<
138 select ARCH_WANTS_NO_INSTR <<
139 select ARCH_WANT_GENERAL_HUGETLB <<
140 select ARCH_WANT_HUGE_PMD_SHARE <<
141 select ARCH_WANT_LD_ORPHAN_WARN <<
142 select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP <<
143 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM <<
144 select ARCH_WANTS_THP_SWAP <<
145 select ARCH_HAS_PARANOID_L1D_FLUSH <<
146 select BUILDTIME_TABLE_SORT <<
147 select CLKEVT_I8253 <<
148 select CLOCKSOURCE_VALIDATE_LAST_CYCLE <<
149 select CLOCKSOURCE_WATCHDOG <<
150 # Word-size accesses may read uninitia <<
151 # in strings and cause false KMSAN rep <<
152 select DCACHE_WORD_ACCESS <<
153 select DYNAMIC_SIGFRAME <<
154 select EDAC_ATOMIC_SCRUB <<
155 select EDAC_SUPPORT <<
156 select GENERIC_CLOCKEVENTS_BROADCAST <<
157 select GENERIC_CLOCKEVENTS_BROADCAST_I <<
158 select GENERIC_CLOCKEVENTS_MIN_ADJUST <<
159 select GENERIC_CMOS_UPDATE <<
160 select GENERIC_CPU_AUTOPROBE <<
161 select GENERIC_CPU_DEVICES <<
162 select GENERIC_CPU_VULNERABILITIES <<
163 select GENERIC_EARLY_IOREMAP <<
164 select GENERIC_ENTRY <<
165 select GENERIC_IOMAP <<
166 select GENERIC_IRQ_EFFECTIVE_AFF_MASK <<
167 select GENERIC_IRQ_MATRIX_ALLOCATOR <<
168 select GENERIC_IRQ_MIGRATION <<
169 select GENERIC_IRQ_PROBE <<
170 select GENERIC_IRQ_RESERVATION_MODE <<
171 select GENERIC_IRQ_SHOW <<
172 select GENERIC_PENDING_IRQ <<
173 select GENERIC_PTDUMP <<
174 select GENERIC_SMP_IDLE_THREAD <<
175 select GENERIC_TIME_VSYSCALL <<
176 select GENERIC_GETTIMEOFDAY <<
177 select GENERIC_VDSO_TIME_NS <<
178 select GENERIC_VDSO_OVERFLOW_PROTECT <<
179 select GUP_GET_PXX_LOW_HIGH <<
180 select HARDIRQS_SW_RESEND <<
181 select HARDLOCKUP_CHECK_TIMESTAMP <<
182 select HAS_IOPORT <<
183 select HAVE_ACPI_APEI <<
184 select HAVE_ACPI_APEI_NMI <<
185 select HAVE_ALIGNED_STRUCT_PAGE <<
186 select HAVE_ARCH_AUDITSYSCALL <<
187 select HAVE_ARCH_HUGE_VMAP <<
188 select HAVE_ARCH_HUGE_VMALLOC <<
189 select HAVE_ARCH_JUMP_LABEL <<
190 select HAVE_ARCH_JUMP_LABEL_RELATIVE <<
191 select HAVE_ARCH_KASAN <<
192 select HAVE_ARCH_KASAN_VMALLOC <<
193 select HAVE_ARCH_KFENCE <<
194 select HAVE_ARCH_KMSAN <<
195 select HAVE_ARCH_KGDB 9 select HAVE_ARCH_KGDB
196 select HAVE_ARCH_MMAP_RND_BITS !! 10 select ARCH_HAVE_CUSTOM_GPIO_H
197 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 11 select HAVE_FUNCTION_TRACER
198 select HAVE_ARCH_COMPAT_MMAP_BASES !! 12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
199 select HAVE_ARCH_PREL32_RELOCATIONS <<
200 select HAVE_ARCH_SECCOMP_FILTER <<
201 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
202 select HAVE_ARCH_STACKLEAK <<
203 select HAVE_ARCH_TRACEHOOK <<
204 select HAVE_ARCH_TRANSPARENT_HUGEPAGE <<
205 select HAVE_ARCH_TRANSPARENT_HUGEPAGE_ <<
206 select HAVE_ARCH_USERFAULTFD_WP <<
207 select HAVE_ARCH_USERFAULTFD_MINOR <<
208 select HAVE_ARCH_VMAP_STACK <<
209 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
210 select HAVE_ARCH_WITHIN_STACK_FRAMES <<
211 select HAVE_ASM_MODVERSIONS <<
212 select HAVE_CMPXCHG_DOUBLE <<
213 select HAVE_CMPXCHG_LOCAL <<
214 select HAVE_CONTEXT_TRACKING_USER <<
215 select HAVE_CONTEXT_TRACKING_USER_OFFS <<
216 select HAVE_C_RECORDMCOUNT <<
217 select HAVE_OBJTOOL_MCOUNT <<
218 select HAVE_OBJTOOL_NOP_MCOUNT <<
219 select HAVE_BUILDTIME_MCOUNT_SORT <<
220 select HAVE_DEBUG_KMEMLEAK <<
221 select HAVE_DMA_CONTIGUOUS <<
222 select HAVE_DYNAMIC_FTRACE 13 select HAVE_DYNAMIC_FTRACE
223 select HAVE_DYNAMIC_FTRACE_WITH_REGS <<
224 select HAVE_DYNAMIC_FTRACE_WITH_ARGS <<
225 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
226 select HAVE_SAMPLE_FTRACE_DIRECT <<
227 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
228 select HAVE_EBPF_JIT <<
229 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
230 select HAVE_EISA <<
231 select HAVE_EXIT_THREAD <<
232 select HAVE_GUP_FAST <<
233 select HAVE_FENTRY <<
234 select HAVE_FTRACE_MCOUNT_RECORD 14 select HAVE_FTRACE_MCOUNT_RECORD
235 select HAVE_FUNCTION_GRAPH_RETVAL !! 15 select HAVE_C_RECORDMCOUNT
236 select HAVE_FUNCTION_GRAPH_TRACER !! 16 select HAVE_FUNCTION_GRAPH_TRACER
237 select HAVE_FUNCTION_TRACER <<
238 select HAVE_GCC_PLUGINS <<
239 select HAVE_HW_BREAKPOINT <<
240 select HAVE_IOREMAP_PROT <<
241 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
242 select HAVE_IRQ_TIME_ACCOUNTING <<
243 select HAVE_JUMP_LABEL_HACK <<
244 select HAVE_KERNEL_BZIP2 <<
245 select HAVE_KERNEL_GZIP <<
246 select HAVE_KERNEL_LZ4 <<
247 select HAVE_KERNEL_LZMA <<
248 select HAVE_KERNEL_LZO <<
249 select HAVE_KERNEL_XZ <<
250 select HAVE_KERNEL_ZSTD <<
251 select HAVE_KPROBES 17 select HAVE_KPROBES
252 select HAVE_KPROBES_ON_FTRACE <<
253 select HAVE_FUNCTION_ERROR_INJECTION <<
254 select HAVE_KRETPROBES 18 select HAVE_KRETPROBES
255 select HAVE_RETHOOK !! 19 select HAVE_DEBUG_KMEMLEAK
256 select HAVE_LIVEPATCH !! 20 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
257 select HAVE_MIXED_BREAKPOINTS_REGS !! 21 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
258 select HAVE_MOD_ARCH_SPECIFIC !! 22 select RTC_LIB if !MACH_LOONGSON
259 select HAVE_MOVE_PMD !! 23 select GENERIC_ATOMIC64 if !64BIT
260 select HAVE_MOVE_PUD !! 24 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
261 select HAVE_NOINSTR_HACK !! 25 select HAVE_DMA_ATTRS
262 select HAVE_NMI !! 26 select HAVE_DMA_API_DEBUG
263 select HAVE_NOINSTR_VALIDATION !! 27 select HAVE_GENERIC_HARDIRQS
264 select HAVE_OBJTOOL !! 28 select GENERIC_IRQ_PROBE
265 select HAVE_OPTPROBES !! 29 select GENERIC_IRQ_SHOW
266 select HAVE_PAGE_SIZE_4KB !! 30 select GENERIC_PCI_IOMAP
267 select HAVE_PCSPKR_PLATFORM !! 31 select HAVE_ARCH_JUMP_LABEL
268 select HAVE_PERF_EVENTS !! 32 select ARCH_WANT_IPC_PARSE_VERSION
269 select HAVE_PERF_EVENTS_NMI <<
270 select HAVE_HARDLOCKUP_DETECTOR_PERF <<
271 select HAVE_PCI <<
272 select HAVE_PERF_REGS <<
273 select HAVE_PERF_USER_STACK_DUMP <<
274 select MMU_GATHER_RCU_TABLE_FREE <<
275 select MMU_GATHER_MERGE_VMAS <<
276 select HAVE_POSIX_CPU_TIMERS_TASK_WORK <<
277 select HAVE_REGS_AND_STACK_ACCESS_API <<
278 select HAVE_RELIABLE_STACKTRACE <<
279 select HAVE_FUNCTION_ARG_ACCESS_API <<
280 select HAVE_SETUP_PER_CPU_AREA <<
281 select HAVE_SOFTIRQ_ON_OWN_STACK <<
282 select HAVE_STACKPROTECTOR <<
283 select HAVE_STACK_VALIDATION <<
284 select HAVE_STATIC_CALL <<
285 select HAVE_STATIC_CALL_INLINE <<
286 select HAVE_PREEMPT_DYNAMIC_CALL <<
287 select HAVE_RSEQ <<
288 select HAVE_RUST <<
289 select HAVE_SYSCALL_TRACEPOINTS <<
290 select HAVE_UACCESS_VALIDATION <<
291 select HAVE_UNSTABLE_SCHED_CLOCK <<
292 select HAVE_USER_RETURN_NOTIFIER <<
293 select HAVE_GENERIC_VDSO <<
294 select VDSO_GETRANDOM <<
295 select HOTPLUG_PARALLEL <<
296 select HOTPLUG_SMT <<
297 select HOTPLUG_SPLIT_STARTUP <<
298 select IRQ_FORCED_THREADING 33 select IRQ_FORCED_THREADING
299 select LOCK_MM_AND_FIND_VMA !! 34 select HAVE_MEMBLOCK
300 select NEED_PER_CPU_EMBED_FIRST_CHUNK !! 35 select HAVE_MEMBLOCK_NODE_MAP
301 select NEED_PER_CPU_PAGE_FIRST_CHUNK !! 36 select ARCH_DISCARD_MEMBLOCK
302 select NEED_SG_DMA_LENGTH !! 37 select GENERIC_SMP_IDLE_THREAD
303 select NUMA_MEMBLKS !! 38 select BUILDTIME_EXTABLE_SORT
304 select PCI_DOMAINS !! 39 select GENERIC_CLOCKEVENTS
305 select PCI_LOCKLESS_CONFIG !! 40 select GENERIC_CMOS_UPDATE
306 select PERF_EVENTS !! 41 select HAVE_MOD_ARCH_SPECIFIC
307 select RTC_LIB !! 42 select VIRT_TO_BUS
308 select RTC_MC146818_LIB !! 43 select MODULES_USE_ELF_REL if MODULES
309 select SPARSE_IRQ !! 44 select MODULES_USE_ELF_RELA if MODULES && 64BIT
310 select SYSCTL_EXCEPTION_TRACE !! 45 select CLONE_BACKWARDS
311 select THREAD_INFO_IN_TASK <<
312 select TRACE_IRQFLAGS_SUPPORT <<
313 select TRACE_IRQFLAGS_NMI_SUPPORT <<
314 select USER_STACKTRACE_SUPPORT <<
315 select HAVE_ARCH_KCSAN <<
316 select PROC_PID_ARCH_STATUS <<
317 select HAVE_ARCH_NODE_DEV_GROUP <<
318 select FUNCTION_ALIGNMENT_16B <<
319 select FUNCTION_ALIGNMENT_4B <<
320 imply IMA_SECURE_AND_OR_TRUSTED_BOOT <<
321 select HAVE_DYNAMIC_FTRACE_NO_PATCHABL <<
322 46
323 config INSTRUCTION_DECODER !! 47 menu "Machine selection"
324 def_bool y <<
325 depends on KPROBES || PERF_EVENTS || U <<
326 48
327 config OUTPUT_FORMAT !! 49 config ZONE_DMA
328 string !! 50 bool
329 default "elf32-i386" if X86_32 <<
330 default "elf64-x86-64" if X86_64 <<
331 51
332 config LOCKDEP_SUPPORT !! 52 choice
333 def_bool y !! 53 prompt "System type"
>> 54 default SGI_IP22
334 55
335 config STACKTRACE_SUPPORT !! 56 config MIPS_ALCHEMY
336 def_bool y !! 57 bool "Alchemy processor based machines"
>> 58 select 64BIT_PHYS_ADDR
>> 59 select CEVT_R4K
>> 60 select CSRC_R4K
>> 61 select IRQ_CPU
>> 62 select SYS_HAS_CPU_MIPS32_R1
>> 63 select SYS_SUPPORTS_32BIT_KERNEL
>> 64 select SYS_SUPPORTS_APM_EMULATION
>> 65 select ARCH_REQUIRE_GPIOLIB
>> 66 select SYS_SUPPORTS_ZBOOT
>> 67 select USB_ARCH_HAS_OHCI
>> 68 select USB_ARCH_HAS_EHCI
>> 69
>> 70 config AR7
>> 71 bool "Texas Instruments AR7"
>> 72 select BOOT_ELF32
>> 73 select DMA_NONCOHERENT
>> 74 select CEVT_R4K
>> 75 select CSRC_R4K
>> 76 select IRQ_CPU
>> 77 select NO_EXCEPT_FILL
>> 78 select SWAP_IO_SPACE
>> 79 select SYS_HAS_CPU_MIPS32_R1
>> 80 select SYS_HAS_EARLY_PRINTK
>> 81 select SYS_SUPPORTS_32BIT_KERNEL
>> 82 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 83 select SYS_SUPPORTS_ZBOOT_UART16550
>> 84 select ARCH_REQUIRE_GPIOLIB
>> 85 select VLYNQ
>> 86 select HAVE_CLK
>> 87 help
>> 88 Support for the Texas Instruments AR7 System-on-a-Chip
>> 89 family: TNETD7100, 7200 and 7300.
>> 90
>> 91 config ATH79
>> 92 bool "Atheros AR71XX/AR724X/AR913X based boards"
>> 93 select ARCH_REQUIRE_GPIOLIB
>> 94 select BOOT_RAW
>> 95 select CEVT_R4K
>> 96 select CSRC_R4K
>> 97 select DMA_NONCOHERENT
>> 98 select HAVE_CLK
>> 99 select IRQ_CPU
>> 100 select MIPS_MACHINE
>> 101 select SYS_HAS_CPU_MIPS32_R2
>> 102 select SYS_HAS_EARLY_PRINTK
>> 103 select SYS_SUPPORTS_32BIT_KERNEL
>> 104 select SYS_SUPPORTS_BIG_ENDIAN
>> 105 help
>> 106 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
>> 107
>> 108 config BCM47XX
>> 109 bool "Broadcom BCM47XX based boards"
>> 110 select ARCH_WANT_OPTIONAL_GPIOLIB
>> 111 select BOOT_RAW
>> 112 select CEVT_R4K
>> 113 select CSRC_R4K
>> 114 select DMA_NONCOHERENT
>> 115 select FW_CFE
>> 116 select HW_HAS_PCI
>> 117 select IRQ_CPU
>> 118 select NO_EXCEPT_FILL
>> 119 select SYS_SUPPORTS_32BIT_KERNEL
>> 120 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 121 select SYS_HAS_EARLY_PRINTK
>> 122 help
>> 123 Support for BCM47XX based boards
>> 124
>> 125 config BCM63XX
>> 126 bool "Broadcom BCM63XX based boards"
>> 127 select CEVT_R4K
>> 128 select CSRC_R4K
>> 129 select DMA_NONCOHERENT
>> 130 select IRQ_CPU
>> 131 select SYS_HAS_CPU_MIPS32_R1
>> 132 select SYS_SUPPORTS_32BIT_KERNEL
>> 133 select SYS_SUPPORTS_BIG_ENDIAN
>> 134 select SYS_HAS_EARLY_PRINTK
>> 135 select SWAP_IO_SPACE
>> 136 select ARCH_REQUIRE_GPIOLIB
>> 137 select HAVE_CLK
>> 138 help
>> 139 Support for BCM63XX based boards
>> 140
>> 141 config MIPS_COBALT
>> 142 bool "Cobalt Server"
>> 143 select CEVT_R4K
>> 144 select CSRC_R4K
>> 145 select CEVT_GT641XX
>> 146 select DMA_NONCOHERENT
>> 147 select HW_HAS_PCI
>> 148 select I8253
>> 149 select I8259
>> 150 select IRQ_CPU
>> 151 select IRQ_GT641XX
>> 152 select PCI_GT64XXX_PCI0
>> 153 select PCI
>> 154 select SYS_HAS_CPU_NEVADA
>> 155 select SYS_HAS_EARLY_PRINTK
>> 156 select SYS_SUPPORTS_32BIT_KERNEL
>> 157 select SYS_SUPPORTS_64BIT_KERNEL
>> 158 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 159
>> 160 config MACH_DECSTATION
>> 161 bool "DECstations"
>> 162 select BOOT_ELF32
>> 163 select CEVT_DS1287
>> 164 select CEVT_R4K
>> 165 select CSRC_IOASIC
>> 166 select CSRC_R4K
>> 167 select CPU_DADDI_WORKAROUNDS if 64BIT
>> 168 select CPU_R4000_WORKAROUNDS if 64BIT
>> 169 select CPU_R4400_WORKAROUNDS if 64BIT
>> 170 select DMA_NONCOHERENT
>> 171 select NO_IOPORT
>> 172 select IRQ_CPU
>> 173 select SYS_HAS_CPU_R3000
>> 174 select SYS_HAS_CPU_R4X00
>> 175 select SYS_SUPPORTS_32BIT_KERNEL
>> 176 select SYS_SUPPORTS_64BIT_KERNEL
>> 177 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 178 select SYS_SUPPORTS_128HZ
>> 179 select SYS_SUPPORTS_256HZ
>> 180 select SYS_SUPPORTS_1024HZ
>> 181 help
>> 182 This enables support for DEC's MIPS based workstations. For details
>> 183 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
>> 184 DECstation porting pages on <http://decstation.unix-ag.org/>.
>> 185
>> 186 If you have one of the following DECstation Models you definitely
>> 187 want to choose R4xx0 for the CPU Type:
>> 188
>> 189 DECstation 5000/50
>> 190 DECstation 5000/150
>> 191 DECstation 5000/260
>> 192 DECsystem 5900/260
>> 193
>> 194 otherwise choose R3000.
>> 195
>> 196 config MACH_JAZZ
>> 197 bool "Jazz family of machines"
>> 198 select FW_ARC
>> 199 select FW_ARC32
>> 200 select ARCH_MAY_HAVE_PC_FDC
>> 201 select CEVT_R4K
>> 202 select CSRC_R4K
>> 203 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 204 select GENERIC_ISA_DMA
>> 205 select HAVE_PCSPKR_PLATFORM
>> 206 select IRQ_CPU
>> 207 select I8253
>> 208 select I8259
>> 209 select ISA
>> 210 select SYS_HAS_CPU_R4X00
>> 211 select SYS_SUPPORTS_32BIT_KERNEL
>> 212 select SYS_SUPPORTS_64BIT_KERNEL
>> 213 select SYS_SUPPORTS_100HZ
>> 214 help
>> 215 This a family of machines based on the MIPS R4030 chipset which was
>> 216 used by several vendors to build RISC/os and Windows NT workstations.
>> 217 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
>> 218 Olivetti M700-10 workstations.
>> 219
>> 220 config MACH_JZ4740
>> 221 bool "Ingenic JZ4740 based machines"
>> 222 select SYS_HAS_CPU_MIPS32_R1
>> 223 select SYS_SUPPORTS_32BIT_KERNEL
>> 224 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 225 select SYS_SUPPORTS_ZBOOT_UART16550
>> 226 select DMA_NONCOHERENT
>> 227 select IRQ_CPU
>> 228 select ARCH_REQUIRE_GPIOLIB
>> 229 select SYS_HAS_EARLY_PRINTK
>> 230 select HAVE_PWM
>> 231 select HAVE_CLK
>> 232 select GENERIC_IRQ_CHIP
>> 233
>> 234 config LANTIQ
>> 235 bool "Lantiq based platforms"
>> 236 select DMA_NONCOHERENT
>> 237 select IRQ_CPU
>> 238 select CEVT_R4K
>> 239 select CSRC_R4K
>> 240 select SYS_HAS_CPU_MIPS32_R1
>> 241 select SYS_HAS_CPU_MIPS32_R2
>> 242 select SYS_SUPPORTS_BIG_ENDIAN
>> 243 select SYS_SUPPORTS_32BIT_KERNEL
>> 244 select SYS_SUPPORTS_MULTITHREADING
>> 245 select SYS_HAS_EARLY_PRINTK
>> 246 select ARCH_REQUIRE_GPIOLIB
>> 247 select SWAP_IO_SPACE
>> 248 select BOOT_RAW
>> 249 select HAVE_MACH_CLKDEV
>> 250 select CLKDEV_LOOKUP
>> 251 select USE_OF
>> 252 select PINCTRL
>> 253 select PINCTRL_LANTIQ
337 254
338 config MMU !! 255 config LASAT
339 def_bool y !! 256 bool "LASAT Networks platforms"
>> 257 select CEVT_R4K
>> 258 select CSRC_R4K
>> 259 select DMA_NONCOHERENT
>> 260 select SYS_HAS_EARLY_PRINTK
>> 261 select HW_HAS_PCI
>> 262 select IRQ_CPU
>> 263 select PCI_GT64XXX_PCI0
>> 264 select MIPS_NILE4
>> 265 select R5000_CPU_SCACHE
>> 266 select SYS_HAS_CPU_R5000
>> 267 select SYS_SUPPORTS_32BIT_KERNEL
>> 268 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
>> 269 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 270
>> 271 config MACH_LOONGSON
>> 272 bool "Loongson family of machines"
>> 273 select SYS_SUPPORTS_ZBOOT
>> 274 help
>> 275 This enables the support of Loongson family of machines.
>> 276
>> 277 Loongson is a family of general-purpose MIPS-compatible CPUs.
>> 278 developed at Institute of Computing Technology (ICT),
>> 279 Chinese Academy of Sciences (CAS) in the People's Republic
>> 280 of China. The chief architect is Professor Weiwu Hu.
>> 281
>> 282 config MACH_LOONGSON1
>> 283 bool "Loongson 1 family of machines"
>> 284 select SYS_SUPPORTS_ZBOOT
>> 285 help
>> 286 This enables support for the Loongson 1 based machines.
>> 287
>> 288 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
>> 289 the ICT (Institute of Computing Technology) and the Chinese Academy
>> 290 of Sciences.
>> 291
>> 292 config MIPS_MALTA
>> 293 bool "MIPS Malta board"
>> 294 select ARCH_MAY_HAVE_PC_FDC
>> 295 select BOOT_ELF32
>> 296 select BOOT_RAW
>> 297 select CEVT_R4K
>> 298 select CSRC_R4K
>> 299 select CSRC_GIC
>> 300 select DMA_NONCOHERENT
>> 301 select GENERIC_ISA_DMA
>> 302 select HAVE_PCSPKR_PLATFORM
>> 303 select IRQ_CPU
>> 304 select IRQ_GIC
>> 305 select HW_HAS_PCI
>> 306 select I8253
>> 307 select I8259
>> 308 select MIPS_BONITO64
>> 309 select MIPS_CPU_SCACHE
>> 310 select PCI_GT64XXX_PCI0
>> 311 select MIPS_MSC
>> 312 select SWAP_IO_SPACE
>> 313 select SYS_HAS_CPU_MIPS32_R1
>> 314 select SYS_HAS_CPU_MIPS32_R2
>> 315 select SYS_HAS_CPU_MIPS64_R1
>> 316 select SYS_HAS_CPU_MIPS64_R2
>> 317 select SYS_HAS_CPU_NEVADA
>> 318 select SYS_HAS_CPU_RM7000
>> 319 select SYS_HAS_EARLY_PRINTK
>> 320 select SYS_SUPPORTS_32BIT_KERNEL
>> 321 select SYS_SUPPORTS_64BIT_KERNEL
>> 322 select SYS_SUPPORTS_BIG_ENDIAN
>> 323 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 324 select SYS_SUPPORTS_MIPS_CMP
>> 325 select SYS_SUPPORTS_MULTITHREADING
>> 326 select SYS_SUPPORTS_SMARTMIPS
>> 327 select SYS_SUPPORTS_ZBOOT
>> 328 help
>> 329 This enables support for the MIPS Technologies Malta evaluation
>> 330 board.
>> 331
>> 332 config MIPS_SEAD3
>> 333 bool "MIPS SEAD3 board"
>> 334 select BOOT_ELF32
>> 335 select BOOT_RAW
>> 336 select CEVT_R4K
>> 337 select CSRC_R4K
>> 338 select CSRC_GIC
>> 339 select CPU_MIPSR2_IRQ_VI
>> 340 select CPU_MIPSR2_IRQ_EI
>> 341 select DMA_NONCOHERENT
>> 342 select IRQ_CPU
>> 343 select IRQ_GIC
>> 344 select MIPS_CPU_SCACHE
>> 345 select MIPS_MSC
>> 346 select SYS_HAS_CPU_MIPS32_R1
>> 347 select SYS_HAS_CPU_MIPS32_R2
>> 348 select SYS_HAS_CPU_MIPS64_R1
>> 349 select SYS_HAS_EARLY_PRINTK
>> 350 select SYS_SUPPORTS_32BIT_KERNEL
>> 351 select SYS_SUPPORTS_64BIT_KERNEL
>> 352 select SYS_SUPPORTS_BIG_ENDIAN
>> 353 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 354 select SYS_SUPPORTS_SMARTMIPS
>> 355 select SYS_SUPPORTS_MICROMIPS
>> 356 select USB_ARCH_HAS_EHCI
>> 357 select USB_EHCI_BIG_ENDIAN_DESC
>> 358 select USB_EHCI_BIG_ENDIAN_MMIO
>> 359 select USE_OF
>> 360 help
>> 361 This enables support for the MIPS Technologies SEAD3 evaluation
>> 362 board.
>> 363
>> 364 config NEC_MARKEINS
>> 365 bool "NEC EMMA2RH Mark-eins board"
>> 366 select SOC_EMMA2RH
>> 367 select HW_HAS_PCI
>> 368 help
>> 369 This enables support for the NEC Electronics Mark-eins boards.
>> 370
>> 371 config MACH_VR41XX
>> 372 bool "NEC VR4100 series based machines"
>> 373 select CEVT_R4K
>> 374 select CSRC_R4K
>> 375 select SYS_HAS_CPU_VR41XX
>> 376 select ARCH_REQUIRE_GPIOLIB
>> 377
>> 378 config NXP_STB220
>> 379 bool "NXP STB220 board"
>> 380 select SOC_PNX833X
>> 381 help
>> 382 Support for NXP Semiconductors STB220 Development Board.
>> 383
>> 384 config NXP_STB225
>> 385 bool "NXP 225 board"
>> 386 select SOC_PNX833X
>> 387 select SOC_PNX8335
>> 388 help
>> 389 Support for NXP Semiconductors STB225 Development Board.
>> 390
>> 391 config PMC_MSP
>> 392 bool "PMC-Sierra MSP chipsets"
>> 393 select CEVT_R4K
>> 394 select CSRC_R4K
>> 395 select DMA_NONCOHERENT
>> 396 select SWAP_IO_SPACE
>> 397 select NO_EXCEPT_FILL
>> 398 select BOOT_RAW
>> 399 select SYS_HAS_CPU_MIPS32_R1
>> 400 select SYS_HAS_CPU_MIPS32_R2
>> 401 select SYS_SUPPORTS_32BIT_KERNEL
>> 402 select SYS_SUPPORTS_BIG_ENDIAN
>> 403 select IRQ_CPU
>> 404 select SERIAL_8250
>> 405 select SERIAL_8250_CONSOLE
>> 406 select USB_EHCI_BIG_ENDIAN_MMIO
>> 407 select USB_EHCI_BIG_ENDIAN_DESC
>> 408 help
>> 409 This adds support for the PMC-Sierra family of Multi-Service
>> 410 Processor System-On-A-Chips. These parts include a number
>> 411 of integrated peripherals, interfaces and DSPs in addition to
>> 412 a variety of MIPS cores.
>> 413
>> 414 config POWERTV
>> 415 bool "Cisco PowerTV"
>> 416 select BOOT_ELF32
>> 417 select CEVT_R4K
>> 418 select CPU_MIPSR2_IRQ_VI
>> 419 select CPU_MIPSR2_IRQ_EI
>> 420 select CSRC_POWERTV
>> 421 select DMA_NONCOHERENT
>> 422 select HW_HAS_PCI
>> 423 select SYS_HAS_EARLY_PRINTK
>> 424 select SYS_HAS_CPU_MIPS32_R2
>> 425 select SYS_SUPPORTS_32BIT_KERNEL
>> 426 select SYS_SUPPORTS_BIG_ENDIAN
>> 427 select SYS_SUPPORTS_HIGHMEM
>> 428 select USB_OHCI_LITTLE_ENDIAN
>> 429 help
>> 430 This enables support for the Cisco PowerTV Platform.
>> 431
>> 432 config RALINK
>> 433 bool "Ralink based machines"
>> 434 select CEVT_R4K
>> 435 select CSRC_R4K
>> 436 select BOOT_RAW
>> 437 select DMA_NONCOHERENT
>> 438 select IRQ_CPU
>> 439 select USE_OF
>> 440 select SYS_HAS_CPU_MIPS32_R1
>> 441 select SYS_HAS_CPU_MIPS32_R2
>> 442 select SYS_SUPPORTS_32BIT_KERNEL
>> 443 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 444 select SYS_HAS_EARLY_PRINTK
>> 445 select HAVE_MACH_CLKDEV
>> 446 select CLKDEV_LOOKUP
>> 447
>> 448 config SGI_IP22
>> 449 bool "SGI IP22 (Indy/Indigo2)"
>> 450 select FW_ARC
>> 451 select FW_ARC32
>> 452 select BOOT_ELF32
>> 453 select CEVT_R4K
>> 454 select CSRC_R4K
>> 455 select DEFAULT_SGI_PARTITION
>> 456 select DMA_NONCOHERENT
>> 457 select HW_HAS_EISA
>> 458 select I8253
>> 459 select I8259
>> 460 select IP22_CPU_SCACHE
>> 461 select IRQ_CPU
>> 462 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 463 select SGI_HAS_I8042
>> 464 select SGI_HAS_INDYDOG
>> 465 select SGI_HAS_HAL2
>> 466 select SGI_HAS_SEEQ
>> 467 select SGI_HAS_WD93
>> 468 select SGI_HAS_ZILOG
>> 469 select SWAP_IO_SPACE
>> 470 select SYS_HAS_CPU_R4X00
>> 471 select SYS_HAS_CPU_R5000
>> 472 #
>> 473 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 474 # memory during early boot on some machines.
>> 475 #
>> 476 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 477 # for a more details discussion
>> 478 #
>> 479 # select SYS_HAS_EARLY_PRINTK
>> 480 select SYS_SUPPORTS_32BIT_KERNEL
>> 481 select SYS_SUPPORTS_64BIT_KERNEL
>> 482 select SYS_SUPPORTS_BIG_ENDIAN
>> 483 help
>> 484 This are the SGI Indy, Challenge S and Indigo2, as well as certain
>> 485 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
>> 486 that runs on these, say Y here.
>> 487
>> 488 config SGI_IP27
>> 489 bool "SGI IP27 (Origin200/2000)"
>> 490 select FW_ARC
>> 491 select FW_ARC64
>> 492 select BOOT_ELF64
>> 493 select DEFAULT_SGI_PARTITION
>> 494 select DMA_COHERENT
>> 495 select SYS_HAS_EARLY_PRINTK
>> 496 select HW_HAS_PCI
>> 497 select NR_CPUS_DEFAULT_64
>> 498 select SYS_HAS_CPU_R10000
>> 499 select SYS_SUPPORTS_64BIT_KERNEL
>> 500 select SYS_SUPPORTS_BIG_ENDIAN
>> 501 select SYS_SUPPORTS_NUMA
>> 502 select SYS_SUPPORTS_SMP
>> 503 help
>> 504 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
>> 505 workstations. To compile a Linux kernel that runs on these, say Y
>> 506 here.
>> 507
>> 508 config SGI_IP28
>> 509 bool "SGI IP28 (Indigo2 R10k)"
>> 510 select FW_ARC
>> 511 select FW_ARC64
>> 512 select BOOT_ELF64
>> 513 select CEVT_R4K
>> 514 select CSRC_R4K
>> 515 select DEFAULT_SGI_PARTITION
>> 516 select DMA_NONCOHERENT
>> 517 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 518 select IRQ_CPU
>> 519 select HW_HAS_EISA
>> 520 select I8253
>> 521 select I8259
>> 522 select SGI_HAS_I8042
>> 523 select SGI_HAS_INDYDOG
>> 524 select SGI_HAS_HAL2
>> 525 select SGI_HAS_SEEQ
>> 526 select SGI_HAS_WD93
>> 527 select SGI_HAS_ZILOG
>> 528 select SWAP_IO_SPACE
>> 529 select SYS_HAS_CPU_R10000
>> 530 #
>> 531 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 532 # memory during early boot on some machines.
>> 533 #
>> 534 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 535 # for a more details discussion
>> 536 #
>> 537 # select SYS_HAS_EARLY_PRINTK
>> 538 select SYS_SUPPORTS_64BIT_KERNEL
>> 539 select SYS_SUPPORTS_BIG_ENDIAN
>> 540 help
>> 541 This is the SGI Indigo2 with R10000 processor. To compile a Linux
>> 542 kernel that runs on these, say Y here.
>> 543
>> 544 config SGI_IP32
>> 545 bool "SGI IP32 (O2)"
>> 546 select FW_ARC
>> 547 select FW_ARC32
>> 548 select BOOT_ELF32
>> 549 select CEVT_R4K
>> 550 select CSRC_R4K
>> 551 select DMA_NONCOHERENT
>> 552 select HW_HAS_PCI
>> 553 select IRQ_CPU
>> 554 select R5000_CPU_SCACHE
>> 555 select RM7000_CPU_SCACHE
>> 556 select SYS_HAS_CPU_R5000
>> 557 select SYS_HAS_CPU_R10000 if BROKEN
>> 558 select SYS_HAS_CPU_RM7000
>> 559 select SYS_HAS_CPU_NEVADA
>> 560 select SYS_SUPPORTS_64BIT_KERNEL
>> 561 select SYS_SUPPORTS_BIG_ENDIAN
>> 562 help
>> 563 If you want this kernel to run on SGI O2 workstation, say Y here.
>> 564
>> 565 config SIBYTE_CRHINE
>> 566 bool "Sibyte BCM91120C-CRhine"
>> 567 select BOOT_ELF32
>> 568 select DMA_COHERENT
>> 569 select SIBYTE_BCM1120
>> 570 select SWAP_IO_SPACE
>> 571 select SYS_HAS_CPU_SB1
>> 572 select SYS_SUPPORTS_BIG_ENDIAN
>> 573 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 574
>> 575 config SIBYTE_CARMEL
>> 576 bool "Sibyte BCM91120x-Carmel"
>> 577 select BOOT_ELF32
>> 578 select DMA_COHERENT
>> 579 select SIBYTE_BCM1120
>> 580 select SWAP_IO_SPACE
>> 581 select SYS_HAS_CPU_SB1
>> 582 select SYS_SUPPORTS_BIG_ENDIAN
>> 583 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 584
>> 585 config SIBYTE_CRHONE
>> 586 bool "Sibyte BCM91125C-CRhone"
>> 587 select BOOT_ELF32
>> 588 select DMA_COHERENT
>> 589 select SIBYTE_BCM1125
>> 590 select SWAP_IO_SPACE
>> 591 select SYS_HAS_CPU_SB1
>> 592 select SYS_SUPPORTS_BIG_ENDIAN
>> 593 select SYS_SUPPORTS_HIGHMEM
>> 594 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 595
>> 596 config SIBYTE_RHONE
>> 597 bool "Sibyte BCM91125E-Rhone"
>> 598 select BOOT_ELF32
>> 599 select DMA_COHERENT
>> 600 select SIBYTE_BCM1125H
>> 601 select SWAP_IO_SPACE
>> 602 select SYS_HAS_CPU_SB1
>> 603 select SYS_SUPPORTS_BIG_ENDIAN
>> 604 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 605
>> 606 config SIBYTE_SWARM
>> 607 bool "Sibyte BCM91250A-SWARM"
>> 608 select BOOT_ELF32
>> 609 select DMA_COHERENT
>> 610 select HAVE_PATA_PLATFORM
>> 611 select NR_CPUS_DEFAULT_2
>> 612 select SIBYTE_SB1250
>> 613 select SWAP_IO_SPACE
>> 614 select SYS_HAS_CPU_SB1
>> 615 select SYS_SUPPORTS_BIG_ENDIAN
>> 616 select SYS_SUPPORTS_HIGHMEM
>> 617 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 618 select ZONE_DMA32 if 64BIT
>> 619
>> 620 config SIBYTE_LITTLESUR
>> 621 bool "Sibyte BCM91250C2-LittleSur"
>> 622 select BOOT_ELF32
>> 623 select DMA_COHERENT
>> 624 select HAVE_PATA_PLATFORM
>> 625 select NR_CPUS_DEFAULT_2
>> 626 select SIBYTE_SB1250
>> 627 select SWAP_IO_SPACE
>> 628 select SYS_HAS_CPU_SB1
>> 629 select SYS_SUPPORTS_BIG_ENDIAN
>> 630 select SYS_SUPPORTS_HIGHMEM
>> 631 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 632
>> 633 config SIBYTE_SENTOSA
>> 634 bool "Sibyte BCM91250E-Sentosa"
>> 635 select BOOT_ELF32
>> 636 select DMA_COHERENT
>> 637 select NR_CPUS_DEFAULT_2
>> 638 select SIBYTE_SB1250
>> 639 select SWAP_IO_SPACE
>> 640 select SYS_HAS_CPU_SB1
>> 641 select SYS_SUPPORTS_BIG_ENDIAN
>> 642 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 643
>> 644 config SIBYTE_BIGSUR
>> 645 bool "Sibyte BCM91480B-BigSur"
>> 646 select BOOT_ELF32
>> 647 select DMA_COHERENT
>> 648 select NR_CPUS_DEFAULT_4
>> 649 select SIBYTE_BCM1x80
>> 650 select SWAP_IO_SPACE
>> 651 select SYS_HAS_CPU_SB1
>> 652 select SYS_SUPPORTS_BIG_ENDIAN
>> 653 select SYS_SUPPORTS_HIGHMEM
>> 654 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 655 select ZONE_DMA32 if 64BIT
>> 656
>> 657 config SNI_RM
>> 658 bool "SNI RM200/300/400"
>> 659 select FW_ARC if CPU_LITTLE_ENDIAN
>> 660 select FW_ARC32 if CPU_LITTLE_ENDIAN
>> 661 select FW_SNIPROM if CPU_BIG_ENDIAN
>> 662 select ARCH_MAY_HAVE_PC_FDC
>> 663 select BOOT_ELF32
>> 664 select CEVT_R4K
>> 665 select CSRC_R4K
>> 666 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 667 select DMA_NONCOHERENT
>> 668 select GENERIC_ISA_DMA
>> 669 select HAVE_PCSPKR_PLATFORM
>> 670 select HW_HAS_EISA
>> 671 select HW_HAS_PCI
>> 672 select IRQ_CPU
>> 673 select I8253
>> 674 select I8259
>> 675 select ISA
>> 676 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
>> 677 select SYS_HAS_CPU_R4X00
>> 678 select SYS_HAS_CPU_R5000
>> 679 select SYS_HAS_CPU_R10000
>> 680 select R5000_CPU_SCACHE
>> 681 select SYS_HAS_EARLY_PRINTK
>> 682 select SYS_SUPPORTS_32BIT_KERNEL
>> 683 select SYS_SUPPORTS_64BIT_KERNEL
>> 684 select SYS_SUPPORTS_BIG_ENDIAN
>> 685 select SYS_SUPPORTS_HIGHMEM
>> 686 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 687 help
>> 688 The SNI RM200/300/400 are MIPS-based machines manufactured by
>> 689 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
>> 690 Technology and now in turn merged with Fujitsu. Say Y here to
>> 691 support this machine type.
>> 692
>> 693 config MACH_TX39XX
>> 694 bool "Toshiba TX39 series based machines"
>> 695
>> 696 config MACH_TX49XX
>> 697 bool "Toshiba TX49 series based machines"
>> 698
>> 699 config MIKROTIK_RB532
>> 700 bool "Mikrotik RB532 boards"
>> 701 select CEVT_R4K
>> 702 select CSRC_R4K
>> 703 select DMA_NONCOHERENT
>> 704 select HW_HAS_PCI
>> 705 select IRQ_CPU
>> 706 select SYS_HAS_CPU_MIPS32_R1
>> 707 select SYS_SUPPORTS_32BIT_KERNEL
>> 708 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 709 select SWAP_IO_SPACE
>> 710 select BOOT_RAW
>> 711 select ARCH_REQUIRE_GPIOLIB
>> 712 help
>> 713 Support the Mikrotik(tm) RouterBoard 532 series,
>> 714 based on the IDT RC32434 SoC.
>> 715
>> 716 config WR_PPMC
>> 717 bool "Wind River PPMC board"
>> 718 select CEVT_R4K
>> 719 select CSRC_R4K
>> 720 select IRQ_CPU
>> 721 select BOOT_ELF32
>> 722 select DMA_NONCOHERENT
>> 723 select HW_HAS_PCI
>> 724 select PCI_GT64XXX_PCI0
>> 725 select SWAP_IO_SPACE
>> 726 select SYS_HAS_CPU_MIPS32_R1
>> 727 select SYS_HAS_CPU_MIPS32_R2
>> 728 select SYS_HAS_CPU_MIPS64_R1
>> 729 select SYS_HAS_CPU_NEVADA
>> 730 select SYS_HAS_CPU_RM7000
>> 731 select SYS_SUPPORTS_32BIT_KERNEL
>> 732 select SYS_SUPPORTS_64BIT_KERNEL
>> 733 select SYS_SUPPORTS_BIG_ENDIAN
>> 734 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 735 help
>> 736 This enables support for the Wind River MIPS32 4KC PPMC evaluation
>> 737 board, which is based on GT64120 bridge chip.
>> 738
>> 739 config CAVIUM_OCTEON_SIMULATOR
>> 740 bool "Cavium Networks Octeon Simulator"
>> 741 select CEVT_R4K
>> 742 select 64BIT_PHYS_ADDR
>> 743 select DMA_COHERENT
>> 744 select SYS_SUPPORTS_64BIT_KERNEL
>> 745 select SYS_SUPPORTS_BIG_ENDIAN
>> 746 select SYS_SUPPORTS_HOTPLUG_CPU
>> 747 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 748 select HOLES_IN_ZONE
>> 749 help
>> 750 The Octeon simulator is software performance model of the Cavium
>> 751 Octeon Processor. It supports simulating Octeon processors on x86
>> 752 hardware.
340 753
341 config ARCH_MMAP_RND_BITS_MIN !! 754 config CAVIUM_OCTEON_REFERENCE_BOARD
342 default 28 if 64BIT !! 755 bool "Cavium Networks Octeon reference board"
343 default 8 !! 756 select CEVT_R4K
>> 757 select 64BIT_PHYS_ADDR
>> 758 select DMA_COHERENT
>> 759 select SYS_SUPPORTS_64BIT_KERNEL
>> 760 select SYS_SUPPORTS_BIG_ENDIAN
>> 761 select EDAC_SUPPORT
>> 762 select SYS_SUPPORTS_HOTPLUG_CPU
>> 763 select SYS_HAS_EARLY_PRINTK
>> 764 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 765 select SWAP_IO_SPACE
>> 766 select HW_HAS_PCI
>> 767 select ARCH_SUPPORTS_MSI
>> 768 select ZONE_DMA32
>> 769 select USB_ARCH_HAS_OHCI
>> 770 select USB_ARCH_HAS_EHCI
>> 771 select HOLES_IN_ZONE
>> 772 help
>> 773 This option supports all of the Octeon reference boards from Cavium
>> 774 Networks. It builds a kernel that dynamically determines the Octeon
>> 775 CPU type and supports all known board reference implementations.
>> 776 Some of the supported boards are:
>> 777 EBT3000
>> 778 EBH3000
>> 779 EBH3100
>> 780 Thunder
>> 781 Kodama
>> 782 Hikari
>> 783 Say Y here for most Octeon reference boards.
>> 784
>> 785 config NLM_XLR_BOARD
>> 786 bool "Netlogic XLR/XLS based systems"
>> 787 select BOOT_ELF32
>> 788 select NLM_COMMON
>> 789 select SYS_HAS_CPU_XLR
>> 790 select SYS_SUPPORTS_SMP
>> 791 select HW_HAS_PCI
>> 792 select SWAP_IO_SPACE
>> 793 select SYS_SUPPORTS_32BIT_KERNEL
>> 794 select SYS_SUPPORTS_64BIT_KERNEL
>> 795 select 64BIT_PHYS_ADDR
>> 796 select SYS_SUPPORTS_BIG_ENDIAN
>> 797 select SYS_SUPPORTS_HIGHMEM
>> 798 select DMA_COHERENT
>> 799 select NR_CPUS_DEFAULT_32
>> 800 select CEVT_R4K
>> 801 select CSRC_R4K
>> 802 select IRQ_CPU
>> 803 select ARCH_SUPPORTS_MSI
>> 804 select ZONE_DMA32 if 64BIT
>> 805 select SYNC_R4K
>> 806 select SYS_HAS_EARLY_PRINTK
>> 807 select USB_ARCH_HAS_OHCI if USB_SUPPORT
>> 808 select USB_ARCH_HAS_EHCI if USB_SUPPORT
>> 809 help
>> 810 Support for systems based on Netlogic XLR and XLS processors.
>> 811 Say Y here if you have a XLR or XLS based board.
>> 812
>> 813 config NLM_XLP_BOARD
>> 814 bool "Netlogic XLP based systems"
>> 815 select BOOT_ELF32
>> 816 select NLM_COMMON
>> 817 select SYS_HAS_CPU_XLP
>> 818 select SYS_SUPPORTS_SMP
>> 819 select HW_HAS_PCI
>> 820 select SYS_SUPPORTS_32BIT_KERNEL
>> 821 select SYS_SUPPORTS_64BIT_KERNEL
>> 822 select 64BIT_PHYS_ADDR
>> 823 select SYS_SUPPORTS_BIG_ENDIAN
>> 824 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 825 select SYS_SUPPORTS_HIGHMEM
>> 826 select DMA_COHERENT
>> 827 select NR_CPUS_DEFAULT_32
>> 828 select CEVT_R4K
>> 829 select CSRC_R4K
>> 830 select IRQ_CPU
>> 831 select ZONE_DMA32 if 64BIT
>> 832 select SYNC_R4K
>> 833 select SYS_HAS_EARLY_PRINTK
>> 834 select USE_OF
>> 835 help
>> 836 This board is based on Netlogic XLP Processor.
>> 837 Say Y here if you have a XLP based board.
344 838
345 config ARCH_MMAP_RND_BITS_MAX !! 839 endchoice
346 default 32 if 64BIT <<
347 default 16 <<
348 840
349 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 841 source "arch/mips/alchemy/Kconfig"
350 default 8 !! 842 source "arch/mips/ath79/Kconfig"
>> 843 source "arch/mips/bcm47xx/Kconfig"
>> 844 source "arch/mips/bcm63xx/Kconfig"
>> 845 source "arch/mips/jazz/Kconfig"
>> 846 source "arch/mips/jz4740/Kconfig"
>> 847 source "arch/mips/lantiq/Kconfig"
>> 848 source "arch/mips/lasat/Kconfig"
>> 849 source "arch/mips/pmcs-msp71xx/Kconfig"
>> 850 source "arch/mips/powertv/Kconfig"
>> 851 source "arch/mips/ralink/Kconfig"
>> 852 source "arch/mips/sgi-ip27/Kconfig"
>> 853 source "arch/mips/sibyte/Kconfig"
>> 854 source "arch/mips/txx9/Kconfig"
>> 855 source "arch/mips/vr41xx/Kconfig"
>> 856 source "arch/mips/cavium-octeon/Kconfig"
>> 857 source "arch/mips/loongson/Kconfig"
>> 858 source "arch/mips/loongson1/Kconfig"
>> 859 source "arch/mips/netlogic/Kconfig"
351 860
352 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 861 endmenu
353 default 16 <<
354 862
355 config SBUS !! 863 config RWSEM_GENERIC_SPINLOCK
356 bool 864 bool
>> 865 default y
357 866
358 config GENERIC_ISA_DMA !! 867 config RWSEM_XCHGADD_ALGORITHM
359 def_bool y <<
360 depends on ISA_DMA_API <<
361 <<
362 config GENERIC_CSUM <<
363 bool 868 bool
364 default y if KMSAN || KASAN <<
365 869
366 config GENERIC_BUG !! 870 config ARCH_HAS_ILOG2_U32
367 def_bool y !! 871 bool
368 depends on BUG !! 872 default n
369 select GENERIC_BUG_RELATIVE_POINTERS i <<
370 873
371 config GENERIC_BUG_RELATIVE_POINTERS !! 874 config ARCH_HAS_ILOG2_U64
372 bool 875 bool
>> 876 default n
373 877
374 config ARCH_MAY_HAVE_PC_FDC !! 878 config GENERIC_HWEIGHT
375 def_bool y !! 879 bool
376 depends on ISA_DMA_API !! 880 default y
377 881
378 config GENERIC_CALIBRATE_DELAY 882 config GENERIC_CALIBRATE_DELAY
379 def_bool y !! 883 bool
>> 884 default y
380 885
381 config ARCH_HAS_CPU_RELAX !! 886 config SCHED_OMIT_FRAME_POINTER
382 def_bool y !! 887 bool
>> 888 default y
383 889
384 config ARCH_HIBERNATION_POSSIBLE !! 890 #
385 def_bool y !! 891 # Select some configuration options automatically based on user selections.
>> 892 #
>> 893 config FW_ARC
>> 894 bool
386 895
387 config ARCH_SUSPEND_POSSIBLE !! 896 config ARCH_MAY_HAVE_PC_FDC
388 def_bool y !! 897 bool
389 898
390 config AUDIT_ARCH !! 899 config BOOT_RAW
391 def_bool y if X86_64 !! 900 bool
392 901
393 config KASAN_SHADOW_OFFSET !! 902 config CEVT_BCM1480
394 hex !! 903 bool
395 depends on KASAN <<
396 default 0xdffffc0000000000 <<
397 904
398 config HAVE_INTEL_TXT !! 905 config CEVT_DS1287
399 def_bool y !! 906 bool
400 depends on INTEL_IOMMU && ACPI <<
401 907
402 config X86_64_SMP !! 908 config CEVT_GT641XX
403 def_bool y !! 909 bool
404 depends on X86_64 && SMP <<
405 910
406 config ARCH_SUPPORTS_UPROBES !! 911 config CEVT_R4K
407 def_bool y !! 912 bool
408 913
409 config FIX_EARLYCON_MEM !! 914 config CEVT_GIC
410 def_bool y !! 915 bool
411 916
412 config DYNAMIC_PHYSICAL_MASK !! 917 config CEVT_SB1250
413 bool 918 bool
414 919
415 config PGTABLE_LEVELS !! 920 config CEVT_TXX9
416 int !! 921 bool
417 default 5 if X86_5LEVEL <<
418 default 4 if X86_64 <<
419 default 3 if X86_PAE <<
420 default 2 <<
421 922
422 config CC_HAS_SANE_STACKPROTECTOR !! 923 config CSRC_BCM1480
423 bool 924 bool
424 default $(success,$(srctree)/scripts/g <<
425 default $(success,$(srctree)/scripts/g <<
426 help <<
427 We have to make sure stack protector <<
428 the compiler produces broken code or <<
429 the segment on 32-bit kernels. <<
430 925
431 menu "Processor type and features" !! 926 config CSRC_IOASIC
>> 927 bool
432 928
433 config SMP !! 929 config CSRC_POWERTV
434 bool "Symmetric multi-processing suppo !! 930 bool
435 help <<
436 This enables support for systems wit <<
437 a system with only one CPU, say N. I <<
438 than one CPU, say Y. <<
439 931
440 If you say N here, the kernel will r !! 932 config CSRC_R4K
441 machines, but will use only one CPU !! 933 bool
442 you say Y here, the kernel will run <<
443 uniprocessor machines. On a uniproce <<
444 will run faster if you say N here. <<
445 934
446 Note that if you say Y here and choo !! 935 config CSRC_GIC
447 "Pentium" under "Processor family", !! 936 bool
448 architectures. Similarly, multiproce <<
449 architecture may not work on all Pen <<
450 937
451 People using multiprocessor machines !! 938 config CSRC_SB1250
452 Y to "Enhanced Real Time Clock Suppo !! 939 bool
453 Management" code will be disabled if <<
454 940
455 See also <file:Documentation/arch/x8 !! 941 config GPIO_TXX9
456 <file:Documentation/admin-guide/lock !! 942 select ARCH_REQUIRE_GPIOLIB
457 <http://www.tldp.org/docs.html#howto !! 943 bool
458 944
459 If you don't know what to do here, s !! 945 config FW_CFE
>> 946 bool
460 947
461 config X86_X2APIC !! 948 config ARCH_DMA_ADDR_T_64BIT
462 bool "Support x2apic" !! 949 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
463 depends on X86_LOCAL_APIC && X86_64 && <<
464 help <<
465 This enables x2apic support on CPUs <<
466 <<
467 This allows 32-bit apic IDs (so it c <<
468 and accesses the local apic via MSRs <<
469 <<
470 Some Intel systems circa 2022 and la <<
471 and can not fall back to the legacy <<
472 enabled in the BIOS. They will boot <<
473 without enabling this option. <<
474 950
475 If you don't know what to do here, s !! 951 config DMA_COHERENT
>> 952 bool
476 953
477 config X86_POSTED_MSI !! 954 config DMA_NONCOHERENT
478 bool "Enable MSI and MSI-x delivery by !! 955 bool
479 depends on X86_64 && IRQ_REMAP !! 956 select NEED_DMA_MAP_STATE
480 help <<
481 This enables MSIs that are under int <<
482 posted interrupts to the host kernel <<
483 potentially be improved by coalescin <<
484 frequency bursts. <<
485 957
486 If you don't know what to do here, s !! 958 config NEED_DMA_MAP_STATE
>> 959 bool
487 960
488 config X86_MPPARSE !! 961 config SYS_HAS_EARLY_PRINTK
489 bool "Enable MPS table" if ACPI !! 962 bool
490 default y <<
491 depends on X86_LOCAL_APIC <<
492 help <<
493 For old smp systems that do not have <<
494 (esp with 64bit cpus) with acpi supp <<
495 963
496 config X86_CPU_RESCTRL !! 964 config HOTPLUG_CPU
497 bool "x86 CPU resource control support !! 965 bool "Support for hot-pluggable CPUs"
498 depends on X86 && (CPU_SUP_INTEL || CP !! 966 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
499 select KERNFS <<
500 select PROC_CPU_RESCTRL if PRO <<
501 help 967 help
502 Enable x86 CPU resource control supp !! 968 Say Y here to allow turning CPUs off and on. CPUs can be
>> 969 controlled through /sys/devices/system/cpu.
>> 970 (Note: power management support will enable this option
>> 971 automatically on SMP systems. )
>> 972 Say N if you want to disable CPU hotplug.
503 973
504 Provide support for the allocation a !! 974 config SYS_SUPPORTS_HOTPLUG_CPU
505 usage by the CPU. !! 975 bool
506 <<
507 Intel calls this Intel Resource Dire <<
508 (Intel(R) RDT). More information abo <<
509 Intel x86 Architecture Software Deve <<
510 <<
511 AMD calls this AMD Platform Quality <<
512 More information about AMD QoS can b <<
513 Platform Quality of Service Extensio <<
514 976
515 Say N if unsure. !! 977 config I8259
>> 978 bool
516 979
517 config X86_FRED !! 980 config MIPS_BONITO64
518 bool "Flexible Return and Event Delive !! 981 bool
519 depends on X86_64 <<
520 help <<
521 When enabled, try to use Flexible Re <<
522 instead of the legacy SYSCALL/SYSENT <<
523 ring transitions and exception/inter <<
524 system supports it. <<
525 982
526 config X86_BIGSMP !! 983 config MIPS_MSC
527 bool "Support for big SMP systems with !! 984 bool
528 depends on SMP && X86_32 <<
529 help <<
530 This option is needed for the system <<
531 985
532 config X86_EXTENDED_PLATFORM !! 986 config MIPS_NILE4
533 bool "Support for extended (non-PC) x8 !! 987 bool
534 default y <<
535 help <<
536 If you disable this option then the <<
537 standard PC platforms. (which covers <<
538 systems out there.) <<
539 988
540 If you enable this option then you'l !! 989 config SYNC_R4K
541 for the following non-PC x86 platfor !! 990 bool
542 CONFIG_64BIT. <<
543 991
544 32-bit platforms (CONFIG_64BIT=n): !! 992 config MIPS_MACHINE
545 Goldfish (Android emulator) !! 993 def_bool n
546 AMD Elan <<
547 RDC R-321x SoC <<
548 SGI 320/540 (Visual Workstatio <<
549 STA2X11-based (e.g. Northville <<
550 Moorestown MID devices <<
551 994
552 64-bit platforms (CONFIG_64BIT=y): !! 995 config NO_IOPORT
553 Numascale NumaChip !! 996 def_bool n
554 ScaleMP vSMP <<
555 SGI Ultraviolet <<
556 997
557 If you have one of these systems, or !! 998 config GENERIC_ISA_DMA
558 generic distribution kernel, say Y h !! 999 bool
>> 1000 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
>> 1001 select ISA_DMA_API
559 1002
560 # This is an alphabetically sorted list of 64 !! 1003 config GENERIC_ISA_DMA_SUPPORT_BROKEN
561 # Please maintain the alphabetic order if and !! 1004 bool
562 config X86_NUMACHIP !! 1005 select GENERIC_ISA_DMA
563 bool "Numascale NumaChip" <<
564 depends on X86_64 <<
565 depends on X86_EXTENDED_PLATFORM <<
566 depends on NUMA <<
567 depends on SMP <<
568 depends on X86_X2APIC <<
569 depends on PCI_MMCONFIG <<
570 help <<
571 Adds support for Numascale NumaChip <<
572 enable more than ~168 cores. <<
573 If you don't have one of these, you <<
574 <<
575 config X86_VSMP <<
576 bool "ScaleMP vSMP" <<
577 select HYPERVISOR_GUEST <<
578 select PARAVIRT <<
579 depends on X86_64 && PCI <<
580 depends on X86_EXTENDED_PLATFORM <<
581 depends on SMP <<
582 help <<
583 Support for ScaleMP vSMP systems. S <<
584 supposed to run on these EM64T-based <<
585 if you have one of these machines. <<
586 <<
587 config X86_UV <<
588 bool "SGI Ultraviolet" <<
589 depends on X86_64 <<
590 depends on X86_EXTENDED_PLATFORM <<
591 depends on NUMA <<
592 depends on EFI <<
593 depends on KEXEC_CORE <<
594 depends on X86_X2APIC <<
595 depends on PCI <<
596 help <<
597 This option is needed in order to su <<
598 If you don't have one of these, you <<
599 1006
600 # Following is an alphabetically sorted list o !! 1007 config ISA_DMA_API
601 # Please maintain the alphabetic order if and !! 1008 bool
602 1009
603 config X86_GOLDFISH !! 1010 config HOLES_IN_ZONE
604 bool "Goldfish (Virtual Platform)" !! 1011 bool
605 depends on X86_EXTENDED_PLATFORM <<
606 help <<
607 Enable support for the Goldfish virt <<
608 for Android development. Unless you <<
609 Goldfish emulator say N here. <<
610 1012
611 config X86_INTEL_CE !! 1013 #
612 bool "CE4100 TV platform" !! 1014 # Endianness selection. Sufficiently obscure so many users don't know what to
613 depends on PCI !! 1015 # answer,so we try hard to limit the available choices. Also the use of a
614 depends on PCI_GODIRECT !! 1016 # choice statement should be more obvious to the user.
615 depends on X86_IO_APIC !! 1017 #
616 depends on X86_32 !! 1018 choice
617 depends on X86_EXTENDED_PLATFORM !! 1019 prompt "Endianness selection"
618 select X86_REBOOTFIXUPS <<
619 select OF <<
620 select OF_EARLY_FLATTREE <<
621 help <<
622 Select for the Intel CE media proces <<
623 This option compiles in support for <<
624 boxes and media devices. <<
625 <<
626 config X86_INTEL_MID <<
627 bool "Intel MID platform support" <<
628 depends on X86_EXTENDED_PLATFORM <<
629 depends on X86_PLATFORM_DEVICES <<
630 depends on PCI <<
631 depends on X86_64 || (PCI_GOANY && X86 <<
632 depends on X86_IO_APIC <<
633 select I2C <<
634 select DW_APB_TIMER <<
635 select INTEL_SCU_PCI <<
636 help <<
637 Select to build a kernel capable of <<
638 Internet Device) platform systems wh <<
639 interfaces. If you are building for <<
640 <<
641 Intel MID platforms are based on an <<
642 consume less power than most of the <<
643 <<
644 config X86_INTEL_QUARK <<
645 bool "Intel Quark platform support" <<
646 depends on X86_32 <<
647 depends on X86_EXTENDED_PLATFORM <<
648 depends on X86_PLATFORM_DEVICES <<
649 depends on X86_TSC <<
650 depends on PCI <<
651 depends on PCI_GOANY <<
652 depends on X86_IO_APIC <<
653 select IOSF_MBI <<
654 select INTEL_IMR <<
655 select COMMON_CLK <<
656 help <<
657 Select to include support for Quark <<
658 Say Y here if you have a Quark based <<
659 compatible Intel Galileo. <<
660 <<
661 config X86_INTEL_LPSS <<
662 bool "Intel Low Power Subsystem Suppor <<
663 depends on X86 && ACPI && PCI <<
664 select COMMON_CLK <<
665 select PINCTRL <<
666 select IOSF_MBI <<
667 help <<
668 Select to build support for Intel Lo <<
669 found on Intel Lynxpoint PCH. Select <<
670 things like clock tree (common clock <<
671 which are needed by the LPSS periphe <<
672 <<
673 config X86_AMD_PLATFORM_DEVICE <<
674 bool "AMD ACPI2Platform devices suppor <<
675 depends on ACPI <<
676 select COMMON_CLK <<
677 select PINCTRL <<
678 help 1020 help
679 Select to interpret AMD specific ACP !! 1021 Some MIPS machines can be configured for either little or big endian
680 such as I2C, UART, GPIO found on AMD !! 1022 byte order. These modes require different kernels and a different
681 I2C and UART depend on COMMON_CLK to !! 1023 Linux distribution. In general there is one preferred byteorder for a
682 implemented under PINCTRL subsystem. !! 1024 particular system but some systems are just as commonly used in the
683 !! 1025 one or the other endianness.
684 config IOSF_MBI !! 1026
685 tristate "Intel SoC IOSF Sideband supp !! 1027 config CPU_BIG_ENDIAN
686 depends on PCI !! 1028 bool "Big endian"
>> 1029 depends on SYS_SUPPORTS_BIG_ENDIAN
>> 1030
>> 1031 config CPU_LITTLE_ENDIAN
>> 1032 bool "Little endian"
>> 1033 depends on SYS_SUPPORTS_LITTLE_ENDIAN
687 help 1034 help
688 This option enables sideband registe <<
689 platforms. On these platforms the IO <<
690 MSR's for some register accesses, mo <<
691 and power. Drivers may query the ava <<
692 determine if they need the sideband <<
693 platforms. The sideband is available <<
694 This list is not meant to be exclusi <<
695 - BayTrail <<
696 - Braswell <<
697 - Quark <<
698 <<
699 You should say Y if you are running <<
700 <<
701 config IOSF_MBI_DEBUG <<
702 bool "Enable IOSF sideband access thro <<
703 depends on IOSF_MBI && DEBUG_FS <<
704 help <<
705 Select this option to expose the IOS <<
706 MDR, MCRX) through debugfs to write <<
707 different units on the SoC. This is <<
708 state information for debug and anal <<
709 mechanism, users of this option woul <<
710 device they want to access. <<
711 <<
712 If you don't require the option or a <<
713 <<
714 config X86_RDC321X <<
715 bool "RDC R-321x SoC" <<
716 depends on X86_32 <<
717 depends on X86_EXTENDED_PLATFORM <<
718 select M486 <<
719 select X86_REBOOTFIXUPS <<
720 help <<
721 This option is needed for RDC R-321x <<
722 as R-8610-(G). <<
723 If you don't have one of these chips <<
724 <<
725 config X86_32_NON_STANDARD <<
726 bool "Support non-standard 32-bit SMP <<
727 depends on X86_32 && SMP <<
728 depends on X86_EXTENDED_PLATFORM <<
729 help <<
730 This option compiles in the bigsmp a <<
731 subarchitectures. It is intended fo <<
732 kernel. If you select them all, kern <<
733 one and will fallback to default. <<
734 <<
735 # Alphabetically sorted list of Non standard 3 <<
736 1035
737 config X86_SUPPORTS_MEMORY_FAILURE !! 1036 endchoice
738 def_bool y <<
739 # MCE code calls memory_failure(): <<
740 depends on X86_MCE <<
741 # On 32-bit this adds too big of NODES <<
742 # On 32-bit SPARSEMEM adds too big of <<
743 depends on X86_64 || !SPARSEMEM <<
744 select ARCH_SUPPORTS_MEMORY_FAILURE <<
745 <<
746 config STA2X11 <<
747 bool "STA2X11 Companion Chip Support" <<
748 depends on X86_32_NON_STANDARD && PCI <<
749 select SWIOTLB <<
750 select MFD_STA2X11 <<
751 select GPIOLIB <<
752 help <<
753 This adds support for boards based o <<
754 a.k.a. "ConneXt". The chip is used i <<
755 PC chipset, so all "standard" periph <<
756 option is selected the kernel will s <<
757 standard PC machines. <<
758 <<
759 config X86_32_IRIS <<
760 tristate "Eurobraille/Iris poweroff mo <<
761 depends on X86_32 <<
762 help <<
763 The Iris machines from EuroBraille d <<
764 to shut themselves down properly. A <<
765 needed to do so, which is what this <<
766 kernel shutdown. <<
767 1037
768 This is only for Iris machines from !! 1038 config EXPORT_UASM
>> 1039 bool
769 1040
770 If unused, say N. !! 1041 config SYS_SUPPORTS_APM_EMULATION
>> 1042 bool
771 1043
772 config SCHED_OMIT_FRAME_POINTER !! 1044 config SYS_SUPPORTS_BIG_ENDIAN
773 def_bool y !! 1045 bool
774 prompt "Single-depth WCHAN output" <<
775 depends on X86 <<
776 help <<
777 Calculate simpler /proc/<PID>/wchan <<
778 is disabled then wchan values will r <<
779 caller function. This provides more <<
780 at the expense of slightly more sche <<
781 1046
782 If in doubt, say "Y". !! 1047 config SYS_SUPPORTS_LITTLE_ENDIAN
>> 1048 bool
783 1049
784 menuconfig HYPERVISOR_GUEST !! 1050 config SYS_SUPPORTS_HUGETLBFS
785 bool "Linux guest support" !! 1051 bool
786 help !! 1052 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
787 Say Y here to enable options for run !! 1053 default y
788 visors. This option enables basic hy <<
789 setup. <<
790 1054
791 If you say N, all options in this su !! 1055 config MIPS_HUGE_TLB_SUPPORT
792 disabled, and Linux guest support wo !! 1056 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
793 1057
794 if HYPERVISOR_GUEST !! 1058 config IRQ_CPU
>> 1059 bool
795 1060
796 config PARAVIRT !! 1061 config IRQ_CPU_RM7K
797 bool "Enable paravirtualization code" !! 1062 bool
798 depends on HAVE_STATIC_CALL <<
799 help <<
800 This changes the kernel so it can mo <<
801 under a hypervisor, potentially impr <<
802 over full virtualization. However, <<
803 the kernel is theoretically slower a <<
804 1063
805 config PARAVIRT_XXL !! 1064 config IRQ_MSP_SLP
806 bool 1065 bool
807 1066
808 config PARAVIRT_DEBUG !! 1067 config IRQ_MSP_CIC
809 bool "paravirt-ops debugging" !! 1068 bool
810 depends on PARAVIRT && DEBUG_KERNEL <<
811 help <<
812 Enable to debug paravirt_ops interna <<
813 a paravirt_op is missing when it is <<
814 1069
815 config PARAVIRT_SPINLOCKS !! 1070 config IRQ_TXX9
816 bool "Paravirtualization layer for spi !! 1071 bool
817 depends on PARAVIRT && SMP <<
818 help <<
819 Paravirtualized spinlocks allow a pv <<
820 spinlock implementation with somethi <<
821 (for example, block the virtual CPU <<
822 1072
823 It has a minimal impact on native ke !! 1073 config IRQ_GT641XX
824 benefit on paravirtualized KVM / Xen !! 1074 bool
825 1075
826 If you are unsure how to answer this !! 1076 config IRQ_GIC
>> 1077 bool
827 1078
828 config X86_HV_CALLBACK_VECTOR !! 1079 config PCI_GT64XXX_PCI0
829 def_bool n !! 1080 bool
830 1081
831 source "arch/x86/xen/Kconfig" !! 1082 config NO_EXCEPT_FILL
>> 1083 bool
832 1084
833 config KVM_GUEST !! 1085 config SOC_EMMA2RH
834 bool "KVM Guest support (including kvm !! 1086 bool
835 depends on PARAVIRT !! 1087 select CEVT_R4K
836 select PARAVIRT_CLOCK !! 1088 select CSRC_R4K
837 select ARCH_CPUIDLE_HALTPOLL !! 1089 select DMA_NONCOHERENT
838 select X86_HV_CALLBACK_VECTOR !! 1090 select IRQ_CPU
839 default y !! 1091 select SWAP_IO_SPACE
840 help !! 1092 select SYS_HAS_CPU_R5500
841 This option enables various optimiza !! 1093 select SYS_SUPPORTS_32BIT_KERNEL
842 hypervisor. It includes a paravirtua !! 1094 select SYS_SUPPORTS_64BIT_KERNEL
843 of relying on a PIT (or probably oth !! 1095 select SYS_SUPPORTS_BIG_ENDIAN
844 underlying device model, the host pr <<
845 timing infrastructure such as time o <<
846 1096
847 config ARCH_CPUIDLE_HALTPOLL !! 1097 config SOC_PNX833X
848 def_bool n !! 1098 bool
849 prompt "Disable host haltpoll when loa !! 1099 select CEVT_R4K
850 help !! 1100 select CSRC_R4K
851 If virtualized under KVM, disable ho !! 1101 select IRQ_CPU
>> 1102 select DMA_NONCOHERENT
>> 1103 select SYS_HAS_CPU_MIPS32_R2
>> 1104 select SYS_SUPPORTS_32BIT_KERNEL
>> 1105 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 1106 select SYS_SUPPORTS_BIG_ENDIAN
>> 1107 select CPU_MIPSR2_IRQ_VI
852 1108
853 config PVH !! 1109 config SOC_PNX8335
854 bool "Support for running PVH guests" !! 1110 bool
855 help !! 1111 select SOC_PNX833X
856 This option enables the PVH entry po <<
857 as specified in the x86/HVM direct b <<
858 <<
859 config PARAVIRT_TIME_ACCOUNTING <<
860 bool "Paravirtual steal time accountin <<
861 depends on PARAVIRT <<
862 help <<
863 Select this option to enable fine gr <<
864 accounting. Time spent executing oth <<
865 the current vCPU is discounted from <<
866 that, there can be a small performan <<
867 <<
868 If in doubt, say N here. <<
869 <<
870 config PARAVIRT_CLOCK <<
871 bool <<
872 <<
873 config JAILHOUSE_GUEST <<
874 bool "Jailhouse non-root cell support" <<
875 depends on X86_64 && PCI <<
876 select X86_PM_TIMER <<
877 help <<
878 This option allows to run Linux as g <<
879 cell. You can leave this option disa <<
880 Jailhouse and run Linux afterwards i <<
881 <<
882 config ACRN_GUEST <<
883 bool "ACRN Guest support" <<
884 depends on X86_64 <<
885 select X86_HV_CALLBACK_VECTOR <<
886 help <<
887 This option allows to run Linux as g <<
888 a flexible, lightweight reference op <<
889 real-time and safety-criticality in <<
890 IOT with small footprint and real-ti <<
891 found in https://projectacrn.org/. <<
892 <<
893 config INTEL_TDX_GUEST <<
894 bool "Intel TDX (Trust Domain Extensio <<
895 depends on X86_64 && CPU_SUP_INTEL <<
896 depends on X86_X2APIC <<
897 depends on EFI_STUB <<
898 select ARCH_HAS_CC_PLATFORM <<
899 select X86_MEM_ENCRYPT <<
900 select X86_MCE <<
901 select UNACCEPTED_MEMORY <<
902 help <<
903 Support running as a guest under Int <<
904 the guest kernel can not boot or run <<
905 TDX includes memory encryption and i <<
906 which protect the confidentiality an <<
907 memory contents and CPU state. TDX g <<
908 some attacks from the VMM. <<
909 <<
910 endif # HYPERVISOR_GUEST <<
911 <<
912 source "arch/x86/Kconfig.cpu" <<
913 <<
914 config HPET_TIMER <<
915 def_bool X86_64 <<
916 prompt "HPET Timer Support" if X86_32 <<
917 help <<
918 Use the IA-PC HPET (High Precision E <<
919 time in preference to the PIT and RT <<
920 present. <<
921 HPET is the next generation timer re <<
922 The HPET provides a stable time base <<
923 systems, unlike the TSC, but it is m <<
924 as it is off-chip. The interface us <<
925 in the HPET spec, revision 1. <<
926 <<
927 You can safely choose Y here. Howev <<
928 activated if the platform and the BI <<
929 Otherwise the 8254 will be used for <<
930 1112
931 Choose N to continue using the legac !! 1113 config SWAP_IO_SPACE
>> 1114 bool
932 1115
933 config HPET_EMULATE_RTC !! 1116 config SGI_HAS_INDYDOG
934 def_bool y !! 1117 bool
935 depends on HPET_TIMER && (RTC_DRV_CMOS <<
936 1118
937 # Mark as expert because too many people got i !! 1119 config SGI_HAS_HAL2
938 # The code disables itself when not needed. !! 1120 bool
939 config DMI <<
940 default y <<
941 select DMI_SCAN_MACHINE_NON_EFI_FALLBA <<
942 bool "Enable DMI scanning" if EXPERT <<
943 help <<
944 Enabled scanning of DMI to identify <<
945 here unless you have verified that y <<
946 affected by entries in the DMI black <<
947 BIOS code. <<
948 <<
949 config GART_IOMMU <<
950 bool "Old AMD GART IOMMU support" <<
951 select IOMMU_HELPER <<
952 select SWIOTLB <<
953 depends on X86_64 && PCI && AMD_NB <<
954 help <<
955 Provides a driver for older AMD Athl <<
956 GART based hardware IOMMUs. <<
957 <<
958 The GART supports full DMA access fo <<
959 limitations, on systems with more th <<
960 for USB, sound, many IDE/SATA chipse <<
961 <<
962 Newer systems typically have a moder <<
963 the CONFIG_AMD_IOMMU=y config option <<
964 <<
965 In normal configurations this driver <<
966 there's more than 3 GB of memory and <<
967 32-bit limited device. <<
968 1121
969 If unsure, say Y. !! 1122 config SGI_HAS_SEEQ
>> 1123 bool
970 1124
971 config BOOT_VESA_SUPPORT !! 1125 config SGI_HAS_WD93
972 bool 1126 bool
973 help <<
974 If true, at least one selected frame <<
975 of VESA video modes set at an early <<
976 1127
977 config MAXSMP !! 1128 config SGI_HAS_ZILOG
978 bool "Enable Maximum number of SMP Pro !! 1129 bool
979 depends on X86_64 && SMP && DEBUG_KERN <<
980 select CPUMASK_OFFSTACK <<
981 help <<
982 Enable maximum number of CPUS and NU <<
983 If unsure, say N. <<
984 1130
985 # !! 1131 config SGI_HAS_I8042
986 # The maximum number of CPUs supported: !! 1132 bool
987 # <<
988 # The main config value is NR_CPUS, which defa <<
989 # and which can be configured interactively in <<
990 # [NR_CPUS_RANGE_BEGIN ... NR_CPUS_RANGE_END] <<
991 # <<
992 # The ranges are different on 32-bit and 64-bi <<
993 # hardware capabilities and scalability featur <<
994 # <<
995 # ( If MAXSMP is enabled we just use the highe <<
996 # interactive configuration. ) <<
997 # <<
998 1133
999 config NR_CPUS_RANGE_BEGIN !! 1134 config DEFAULT_SGI_PARTITION
1000 int !! 1135 bool
1001 default NR_CPUS_RANGE_END if MAXSMP <<
1002 default 1 if !SMP <<
1003 default 2 <<
1004 1136
1005 config NR_CPUS_RANGE_END !! 1137 config FW_ARC32
1006 int !! 1138 bool
1007 depends on X86_32 <<
1008 default 64 if SMP && X86_BIGSMP <<
1009 default 8 if SMP && !X86_BIGSMP <<
1010 default 1 if !SMP <<
1011 1139
1012 config NR_CPUS_RANGE_END !! 1140 config FW_SNIPROM
1013 int !! 1141 bool
1014 depends on X86_64 <<
1015 default 8192 if SMP && CPUMASK_OFFST <<
1016 default 512 if SMP && !CPUMASK_OFFS <<
1017 default 1 if !SMP <<
1018 1142
1019 config NR_CPUS_DEFAULT !! 1143 config BOOT_ELF32
1020 int !! 1144 bool
1021 depends on X86_32 <<
1022 default 32 if X86_BIGSMP <<
1023 default 8 if SMP <<
1024 default 1 if !SMP <<
1025 1145
1026 config NR_CPUS_DEFAULT !! 1146 config MIPS_L1_CACHE_SHIFT
1027 int 1147 int
1028 depends on X86_64 !! 1148 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1029 default 8192 if MAXSMP !! 1149 default "6" if MIPS_CPU_SCACHE
1030 default 64 if SMP !! 1150 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1031 default 1 if !SMP !! 1151 default "5"
1032 1152
1033 config NR_CPUS !! 1153 config HAVE_STD_PC_SERIAL_PORT
1034 int "Maximum number of CPUs" if SMP & !! 1154 bool
1035 range NR_CPUS_RANGE_BEGIN NR_CPUS_RAN <<
1036 default NR_CPUS_DEFAULT <<
1037 help <<
1038 This allows you to specify the maxi <<
1039 kernel will support. If CPUMASK_OF <<
1040 supported value is 8192, otherwise <<
1041 minimum value which makes sense is <<
1042 1155
1043 This is purely to save memory: each !! 1156 config ARC_CONSOLE
1044 to the kernel image. !! 1157 bool "ARC console support"
>> 1158 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1045 1159
1046 config SCHED_CLUSTER !! 1160 config ARC_MEMORY
1047 bool "Cluster scheduler support" !! 1161 bool
1048 depends on SMP !! 1162 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1049 default y 1163 default y
1050 help <<
1051 Cluster scheduler support improves <<
1052 making when dealing with machines t <<
1053 Cluster usually means a couple of C <<
1054 by sharing mid-level caches, last-l <<
1055 busses. <<
1056 <<
1057 config SCHED_SMT <<
1058 def_bool y if SMP <<
1059 1164
1060 config SCHED_MC !! 1165 config ARC_PROMLIB
1061 def_bool y !! 1166 bool
1062 prompt "Multi-core scheduler support" !! 1167 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1063 depends on SMP <<
1064 help <<
1065 Multi-core scheduler support improv <<
1066 making when dealing with multi-core <<
1067 increased overhead in some places. <<
1068 <<
1069 config SCHED_MC_PRIO <<
1070 bool "CPU core priorities scheduler s <<
1071 depends on SCHED_MC <<
1072 select X86_INTEL_PSTATE if CPU_SUP_IN <<
1073 select X86_AMD_PSTATE if CPU_SUP_AMD <<
1074 select CPU_FREQ <<
1075 default y 1168 default y
1076 help <<
1077 Intel Turbo Boost Max Technology 3. <<
1078 core ordering determined at manufac <<
1079 certain cores to reach higher turbo <<
1080 single threaded workloads) than oth <<
1081 <<
1082 Enabling this kernel feature teache <<
1083 the TBM3 (aka ITMT) priority order <<
1084 scheduler's CPU selection logic acc <<
1085 overall system performance can be a <<
1086 1169
1087 This feature will have no effect on !! 1170 config FW_ARC64
1088 !! 1171 bool
1089 If unsure say Y here. <<
1090 <<
1091 config UP_LATE_INIT <<
1092 def_bool y <<
1093 depends on !SMP && X86_LOCAL_APIC <<
1094 <<
1095 config X86_UP_APIC <<
1096 bool "Local APIC support on uniproces <<
1097 default PCI_MSI <<
1098 depends on X86_32 && !SMP && !X86_32_ <<
1099 help <<
1100 A local APIC (Advanced Programmable <<
1101 integrated interrupt controller in <<
1102 system which has a processor with a <<
1103 enable and use it. If you say Y her <<
1104 have a local APIC, then the kernel <<
1105 all. The local APIC supports CPU-ge <<
1106 performance counters), and the NMI <<
1107 lockups. <<
1108 <<
1109 config X86_UP_IOAPIC <<
1110 bool "IO-APIC support on uniprocessor <<
1111 depends on X86_UP_APIC <<
1112 help <<
1113 An IO-APIC (I/O Advanced Programmab <<
1114 SMP-capable replacement for PC-styl <<
1115 SMP systems and many recent uniproc <<
1116 <<
1117 If you have a single-CPU system wit <<
1118 to use it. If you say Y here even t <<
1119 an IO-APIC, then the kernel will st <<
1120 1172
1121 config X86_LOCAL_APIC !! 1173 config BOOT_ELF64
1122 def_bool y !! 1174 bool
1123 depends on X86_64 || SMP || X86_32_NO <<
1124 select IRQ_DOMAIN_HIERARCHY <<
1125 1175
1126 config ACPI_MADT_WAKEUP !! 1176 menu "CPU selection"
1127 def_bool y <<
1128 depends on X86_64 <<
1129 depends on ACPI <<
1130 depends on SMP <<
1131 depends on X86_LOCAL_APIC <<
1132 1177
1133 config X86_IO_APIC !! 1178 choice
1134 def_bool y !! 1179 prompt "CPU type"
1135 depends on X86_LOCAL_APIC || X86_UP_I !! 1180 default CPU_R4X00
1136 1181
1137 config X86_REROUTE_FOR_BROKEN_BOOT_IRQS !! 1182 config CPU_LOONGSON2E
1138 bool "Reroute for broken boot IRQs" !! 1183 bool "Loongson 2E"
1139 depends on X86_IO_APIC !! 1184 depends on SYS_HAS_CPU_LOONGSON2E
1140 help !! 1185 select CPU_LOONGSON2
1141 This option enables a workaround th !! 1186 help
1142 spurious interrupts. This is recomm !! 1187 The Loongson 2E processor implements the MIPS III instruction set
1143 interrupt handling is used on syste !! 1188 with many extensions.
1144 superfluous "boot interrupts" canno !! 1189
1145 !! 1190 It has an internal FPGA northbridge, which is compatible to
1146 Some chipsets generate a legacy INT !! 1191 bonito64.
1147 entry in the chipset's IO-APIC is m !! 1192
1148 kernel does during interrupt handli !! 1193 config CPU_LOONGSON2F
1149 boot IRQ generation cannot be disab !! 1194 bool "Loongson 2F"
1150 the original IRQ line masked so tha !! 1195 depends on SYS_HAS_CPU_LOONGSON2F
1151 IRQ" is delivered to the CPUs. The !! 1196 select CPU_LOONGSON2
1152 kernel to set up the IRQ handler on !! 1197 select ARCH_REQUIRE_GPIOLIB
1153 way only one interrupt is delivered !! 1198 help
1154 the spurious second interrupt may c !! 1199 The Loongson 2F processor implements the MIPS III instruction set
1155 down (vital) interrupt lines. !! 1200 with many extensions.
1156 !! 1201
1157 Only affects "broken" chipsets. Int !! 1202 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1158 increased on these systems. !! 1203 have a similar programming interface with FPGA northbridge used in
1159 !! 1204 Loongson2E.
1160 config X86_MCE !! 1205
1161 bool "Machine Check / overheating rep !! 1206 config CPU_LOONGSON1B
1162 select GENERIC_ALLOCATOR !! 1207 bool "Loongson 1B"
1163 default y !! 1208 depends on SYS_HAS_CPU_LOONGSON1B
1164 help !! 1209 select CPU_LOONGSON1
1165 Machine Check support allows the pr !! 1210 help
1166 kernel if it detects a problem (e.g !! 1211 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1167 The action the kernel takes depends !! 1212 release 2 instruction set.
1168 ranging from warning messages to ha !! 1213
1169 !! 1214 config CPU_MIPS32_R1
1170 config X86_MCELOG_LEGACY !! 1215 bool "MIPS32 Release 1"
1171 bool "Support for deprecated /dev/mce !! 1216 depends on SYS_HAS_CPU_MIPS32_R1
1172 depends on X86_MCE !! 1217 select CPU_HAS_PREFETCH
1173 help !! 1218 select CPU_SUPPORTS_32BIT_KERNEL
1174 Enable support for /dev/mcelog whic !! 1219 select CPU_SUPPORTS_HIGHMEM
1175 userspace logging daemon. Consider !! 1220 help
1176 rasdaemon solution. !! 1221 Choose this option to build a kernel for release 1 or later of the
>> 1222 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1223 MIPS processor are based on a MIPS32 processor. If you know the
>> 1224 specific type of processor in your system, choose those that one
>> 1225 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1226 Release 2 of the MIPS32 architecture is available since several
>> 1227 years so chances are you even have a MIPS32 Release 2 processor
>> 1228 in which case you should choose CPU_MIPS32_R2 instead for better
>> 1229 performance.
1177 1230
1178 config X86_MCE_INTEL !! 1231 config CPU_MIPS32_R2
1179 def_bool y !! 1232 bool "MIPS32 Release 2"
1180 prompt "Intel MCE features" !! 1233 depends on SYS_HAS_CPU_MIPS32_R2
1181 depends on X86_MCE && X86_LOCAL_APIC !! 1234 select CPU_HAS_PREFETCH
1182 help !! 1235 select CPU_SUPPORTS_32BIT_KERNEL
1183 Additional support for intel specif !! 1236 select CPU_SUPPORTS_HIGHMEM
1184 the thermal monitor. !! 1237 select HAVE_KVM
>> 1238 help
>> 1239 Choose this option to build a kernel for release 2 or later of the
>> 1240 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1241 MIPS processor are based on a MIPS32 processor. If you know the
>> 1242 specific type of processor in your system, choose those that one
>> 1243 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1244
>> 1245 config CPU_MIPS64_R1
>> 1246 bool "MIPS64 Release 1"
>> 1247 depends on SYS_HAS_CPU_MIPS64_R1
>> 1248 select CPU_HAS_PREFETCH
>> 1249 select CPU_SUPPORTS_32BIT_KERNEL
>> 1250 select CPU_SUPPORTS_64BIT_KERNEL
>> 1251 select CPU_SUPPORTS_HIGHMEM
>> 1252 select CPU_SUPPORTS_HUGEPAGES
>> 1253 help
>> 1254 Choose this option to build a kernel for release 1 or later of the
>> 1255 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1256 MIPS processor are based on a MIPS64 processor. If you know the
>> 1257 specific type of processor in your system, choose those that one
>> 1258 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1259 Release 2 of the MIPS64 architecture is available since several
>> 1260 years so chances are you even have a MIPS64 Release 2 processor
>> 1261 in which case you should choose CPU_MIPS64_R2 instead for better
>> 1262 performance.
1185 1263
1186 config X86_MCE_AMD !! 1264 config CPU_MIPS64_R2
1187 def_bool y !! 1265 bool "MIPS64 Release 2"
1188 prompt "AMD MCE features" !! 1266 depends on SYS_HAS_CPU_MIPS64_R2
1189 depends on X86_MCE && X86_LOCAL_APIC !! 1267 select CPU_HAS_PREFETCH
>> 1268 select CPU_SUPPORTS_32BIT_KERNEL
>> 1269 select CPU_SUPPORTS_64BIT_KERNEL
>> 1270 select CPU_SUPPORTS_HIGHMEM
>> 1271 select CPU_SUPPORTS_HUGEPAGES
>> 1272 help
>> 1273 Choose this option to build a kernel for release 2 or later of the
>> 1274 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1275 MIPS processor are based on a MIPS64 processor. If you know the
>> 1276 specific type of processor in your system, choose those that one
>> 1277 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1278
>> 1279 config CPU_R3000
>> 1280 bool "R3000"
>> 1281 depends on SYS_HAS_CPU_R3000
>> 1282 select CPU_HAS_WB
>> 1283 select CPU_SUPPORTS_32BIT_KERNEL
>> 1284 select CPU_SUPPORTS_HIGHMEM
>> 1285 help
>> 1286 Please make sure to pick the right CPU type. Linux/MIPS is not
>> 1287 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
>> 1288 *not* work on R4000 machines and vice versa. However, since most
>> 1289 of the supported machines have an R4000 (or similar) CPU, R4x00
>> 1290 might be a safe bet. If the resulting kernel does not work,
>> 1291 try to recompile with R3000.
>> 1292
>> 1293 config CPU_TX39XX
>> 1294 bool "R39XX"
>> 1295 depends on SYS_HAS_CPU_TX39XX
>> 1296 select CPU_SUPPORTS_32BIT_KERNEL
>> 1297
>> 1298 config CPU_VR41XX
>> 1299 bool "R41xx"
>> 1300 depends on SYS_HAS_CPU_VR41XX
>> 1301 select CPU_SUPPORTS_32BIT_KERNEL
>> 1302 select CPU_SUPPORTS_64BIT_KERNEL
>> 1303 help
>> 1304 The options selects support for the NEC VR4100 series of processors.
>> 1305 Only choose this option if you have one of these processors as a
>> 1306 kernel built with this option will not run on any other type of
>> 1307 processor or vice versa.
>> 1308
>> 1309 config CPU_R4300
>> 1310 bool "R4300"
>> 1311 depends on SYS_HAS_CPU_R4300
>> 1312 select CPU_SUPPORTS_32BIT_KERNEL
>> 1313 select CPU_SUPPORTS_64BIT_KERNEL
>> 1314 help
>> 1315 MIPS Technologies R4300-series processors.
>> 1316
>> 1317 config CPU_R4X00
>> 1318 bool "R4x00"
>> 1319 depends on SYS_HAS_CPU_R4X00
>> 1320 select CPU_SUPPORTS_32BIT_KERNEL
>> 1321 select CPU_SUPPORTS_64BIT_KERNEL
>> 1322 select CPU_SUPPORTS_HUGEPAGES
>> 1323 help
>> 1324 MIPS Technologies R4000-series processors other than 4300, including
>> 1325 the R4000, R4400, R4600, and 4700.
>> 1326
>> 1327 config CPU_TX49XX
>> 1328 bool "R49XX"
>> 1329 depends on SYS_HAS_CPU_TX49XX
>> 1330 select CPU_HAS_PREFETCH
>> 1331 select CPU_SUPPORTS_32BIT_KERNEL
>> 1332 select CPU_SUPPORTS_64BIT_KERNEL
>> 1333 select CPU_SUPPORTS_HUGEPAGES
>> 1334
>> 1335 config CPU_R5000
>> 1336 bool "R5000"
>> 1337 depends on SYS_HAS_CPU_R5000
>> 1338 select CPU_SUPPORTS_32BIT_KERNEL
>> 1339 select CPU_SUPPORTS_64BIT_KERNEL
>> 1340 select CPU_SUPPORTS_HUGEPAGES
>> 1341 help
>> 1342 MIPS Technologies R5000-series processors other than the Nevada.
>> 1343
>> 1344 config CPU_R5432
>> 1345 bool "R5432"
>> 1346 depends on SYS_HAS_CPU_R5432
>> 1347 select CPU_SUPPORTS_32BIT_KERNEL
>> 1348 select CPU_SUPPORTS_64BIT_KERNEL
>> 1349 select CPU_SUPPORTS_HUGEPAGES
>> 1350
>> 1351 config CPU_R5500
>> 1352 bool "R5500"
>> 1353 depends on SYS_HAS_CPU_R5500
>> 1354 select CPU_SUPPORTS_32BIT_KERNEL
>> 1355 select CPU_SUPPORTS_64BIT_KERNEL
>> 1356 select CPU_SUPPORTS_HUGEPAGES
>> 1357 help
>> 1358 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
>> 1359 instruction set.
>> 1360
>> 1361 config CPU_R6000
>> 1362 bool "R6000"
>> 1363 depends on SYS_HAS_CPU_R6000
>> 1364 select CPU_SUPPORTS_32BIT_KERNEL
>> 1365 help
>> 1366 MIPS Technologies R6000 and R6000A series processors. Note these
>> 1367 processors are extremely rare and the support for them is incomplete.
>> 1368
>> 1369 config CPU_NEVADA
>> 1370 bool "RM52xx"
>> 1371 depends on SYS_HAS_CPU_NEVADA
>> 1372 select CPU_SUPPORTS_32BIT_KERNEL
>> 1373 select CPU_SUPPORTS_64BIT_KERNEL
>> 1374 select CPU_SUPPORTS_HUGEPAGES
>> 1375 help
>> 1376 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
>> 1377
>> 1378 config CPU_R8000
>> 1379 bool "R8000"
>> 1380 depends on SYS_HAS_CPU_R8000
>> 1381 select CPU_HAS_PREFETCH
>> 1382 select CPU_SUPPORTS_64BIT_KERNEL
>> 1383 help
>> 1384 MIPS Technologies R8000 processors. Note these processors are
>> 1385 uncommon and the support for them is incomplete.
>> 1386
>> 1387 config CPU_R10000
>> 1388 bool "R10000"
>> 1389 depends on SYS_HAS_CPU_R10000
>> 1390 select CPU_HAS_PREFETCH
>> 1391 select CPU_SUPPORTS_32BIT_KERNEL
>> 1392 select CPU_SUPPORTS_64BIT_KERNEL
>> 1393 select CPU_SUPPORTS_HIGHMEM
>> 1394 select CPU_SUPPORTS_HUGEPAGES
>> 1395 help
>> 1396 MIPS Technologies R10000-series processors.
>> 1397
>> 1398 config CPU_RM7000
>> 1399 bool "RM7000"
>> 1400 depends on SYS_HAS_CPU_RM7000
>> 1401 select CPU_HAS_PREFETCH
>> 1402 select CPU_SUPPORTS_32BIT_KERNEL
>> 1403 select CPU_SUPPORTS_64BIT_KERNEL
>> 1404 select CPU_SUPPORTS_HIGHMEM
>> 1405 select CPU_SUPPORTS_HUGEPAGES
>> 1406
>> 1407 config CPU_SB1
>> 1408 bool "SB1"
>> 1409 depends on SYS_HAS_CPU_SB1
>> 1410 select CPU_SUPPORTS_32BIT_KERNEL
>> 1411 select CPU_SUPPORTS_64BIT_KERNEL
>> 1412 select CPU_SUPPORTS_HIGHMEM
>> 1413 select CPU_SUPPORTS_HUGEPAGES
>> 1414 select WEAK_ORDERING
>> 1415
>> 1416 config CPU_CAVIUM_OCTEON
>> 1417 bool "Cavium Octeon processor"
>> 1418 depends on SYS_HAS_CPU_CAVIUM_OCTEON
>> 1419 select ARCH_SPARSEMEM_ENABLE
>> 1420 select CPU_HAS_PREFETCH
>> 1421 select CPU_SUPPORTS_64BIT_KERNEL
>> 1422 select SYS_SUPPORTS_SMP
>> 1423 select NR_CPUS_DEFAULT_16
>> 1424 select WEAK_ORDERING
>> 1425 select CPU_SUPPORTS_HIGHMEM
>> 1426 select CPU_SUPPORTS_HUGEPAGES
>> 1427 select LIBFDT
>> 1428 select USE_OF
>> 1429 select USB_EHCI_BIG_ENDIAN_MMIO
>> 1430 help
>> 1431 The Cavium Octeon processor is a highly integrated chip containing
>> 1432 many ethernet hardware widgets for networking tasks. The processor
>> 1433 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
>> 1434 Full details can be found at http://www.caviumnetworks.com.
>> 1435
>> 1436 config CPU_BMIPS3300
>> 1437 bool "BMIPS3300"
>> 1438 depends on SYS_HAS_CPU_BMIPS3300
>> 1439 select CPU_BMIPS
>> 1440 help
>> 1441 Broadcom BMIPS3300 processors.
>> 1442
>> 1443 config CPU_BMIPS4350
>> 1444 bool "BMIPS4350"
>> 1445 depends on SYS_HAS_CPU_BMIPS4350
>> 1446 select CPU_BMIPS
>> 1447 select SYS_SUPPORTS_SMP
>> 1448 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1449 help
>> 1450 Broadcom BMIPS4350 ("VIPER") processors.
>> 1451
>> 1452 config CPU_BMIPS4380
>> 1453 bool "BMIPS4380"
>> 1454 depends on SYS_HAS_CPU_BMIPS4380
>> 1455 select CPU_BMIPS
>> 1456 select SYS_SUPPORTS_SMP
>> 1457 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1458 help
>> 1459 Broadcom BMIPS4380 processors.
>> 1460
>> 1461 config CPU_BMIPS5000
>> 1462 bool "BMIPS5000"
>> 1463 depends on SYS_HAS_CPU_BMIPS5000
>> 1464 select CPU_BMIPS
>> 1465 select CPU_SUPPORTS_HIGHMEM
>> 1466 select MIPS_CPU_SCACHE
>> 1467 select SYS_SUPPORTS_SMP
>> 1468 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1469 help
>> 1470 Broadcom BMIPS5000 processors.
>> 1471
>> 1472 config CPU_XLR
>> 1473 bool "Netlogic XLR SoC"
>> 1474 depends on SYS_HAS_CPU_XLR
>> 1475 select CPU_SUPPORTS_32BIT_KERNEL
>> 1476 select CPU_SUPPORTS_64BIT_KERNEL
>> 1477 select CPU_SUPPORTS_HIGHMEM
>> 1478 select CPU_SUPPORTS_HUGEPAGES
>> 1479 select WEAK_ORDERING
>> 1480 select WEAK_REORDERING_BEYOND_LLSC
>> 1481 help
>> 1482 Netlogic Microsystems XLR/XLS processors.
>> 1483
>> 1484 config CPU_XLP
>> 1485 bool "Netlogic XLP SoC"
>> 1486 depends on SYS_HAS_CPU_XLP
>> 1487 select CPU_SUPPORTS_32BIT_KERNEL
>> 1488 select CPU_SUPPORTS_64BIT_KERNEL
>> 1489 select CPU_SUPPORTS_HIGHMEM
>> 1490 select WEAK_ORDERING
>> 1491 select WEAK_REORDERING_BEYOND_LLSC
>> 1492 select CPU_HAS_PREFETCH
>> 1493 select CPU_MIPSR2
1190 help 1494 help
1191 Additional support for AMD specific !! 1495 Netlogic Microsystems XLP processors.
1192 the DRAM Error Threshold. !! 1496 endchoice
1193 1497
1194 config X86_ANCIENT_MCE !! 1498 if CPU_LOONGSON2F
1195 bool "Support for old Pentium 5 / Win !! 1499 config CPU_NOP_WORKAROUNDS
1196 depends on X86_32 && X86_MCE !! 1500 bool
1197 help <<
1198 Include support for machine check h <<
1199 systems. These typically need to be <<
1200 line. <<
1201 1501
1202 config X86_MCE_THRESHOLD !! 1502 config CPU_JUMP_WORKAROUNDS
1203 depends on X86_MCE_AMD || X86_MCE_INT !! 1503 bool
1204 def_bool y <<
1205 1504
1206 config X86_MCE_INJECT !! 1505 config CPU_LOONGSON2F_WORKAROUNDS
1207 depends on X86_MCE && X86_LOCAL_APIC !! 1506 bool "Loongson 2F Workarounds"
1208 tristate "Machine check injector supp !! 1507 default y
>> 1508 select CPU_NOP_WORKAROUNDS
>> 1509 select CPU_JUMP_WORKAROUNDS
1209 help 1510 help
1210 Provide support for injecting machi !! 1511 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1211 If you don't know what a machine ch !! 1512 require workarounds. Without workarounds the system may hang
1212 QA it is safe to say n. !! 1513 unexpectedly. For more information please refer to the gas
>> 1514 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
>> 1515
>> 1516 Loongson 2F03 and later have fixed these issues and no workarounds
>> 1517 are needed. The workarounds have no significant side effect on them
>> 1518 but may decrease the performance of the system so this option should
>> 1519 be disabled unless the kernel is intended to be run on 2F01 or 2F02
>> 1520 systems.
1213 1521
1214 source "arch/x86/events/Kconfig" !! 1522 If unsure, please say Y.
>> 1523 endif # CPU_LOONGSON2F
1215 1524
1216 config X86_LEGACY_VM86 !! 1525 config SYS_SUPPORTS_ZBOOT
1217 bool "Legacy VM86 support" !! 1526 bool
1218 depends on X86_32 !! 1527 select HAVE_KERNEL_GZIP
1219 help !! 1528 select HAVE_KERNEL_BZIP2
1220 This option allows user programs to !! 1529 select HAVE_KERNEL_LZMA
1221 mode, which is an 80286-era approxi !! 1530 select HAVE_KERNEL_LZO
1222 <<
1223 Some very old versions of X and/or <<
1224 for user mode setting. Similarly, <<
1225 available to accelerate real mode D <<
1226 recent version of DOSEMU, X, or vbe <<
1227 functional even without kernel VM86 <<
1228 fall back to software emulation. Ne <<
1229 a 16-bit DOS program where 16-bit p <<
1230 mode might be faster than emulation <<
1231 enable this option. <<
1232 1531
1233 Note that any app that works on a 6 !! 1532 config SYS_SUPPORTS_ZBOOT_UART16550
1234 need this option, as 64-bit kernels !! 1533 bool
1235 V8086 mode. This option is also unr !! 1534 select SYS_SUPPORTS_ZBOOT
1236 mode and is not needed to run most <<
1237 1535
1238 Enabling this option increases the !! 1536 config CPU_LOONGSON2
1239 and slows down exception handling a !! 1537 bool
>> 1538 select CPU_SUPPORTS_32BIT_KERNEL
>> 1539 select CPU_SUPPORTS_64BIT_KERNEL
>> 1540 select CPU_SUPPORTS_HIGHMEM
>> 1541 select CPU_SUPPORTS_HUGEPAGES
1240 1542
1241 If unsure, say N here. !! 1543 config CPU_LOONGSON1
>> 1544 bool
>> 1545 select CPU_MIPS32
>> 1546 select CPU_MIPSR2
>> 1547 select CPU_HAS_PREFETCH
>> 1548 select CPU_SUPPORTS_32BIT_KERNEL
>> 1549 select CPU_SUPPORTS_HIGHMEM
1242 1550
1243 config VM86 !! 1551 config CPU_BMIPS
1244 bool 1552 bool
1245 default X86_LEGACY_VM86 !! 1553 select CPU_MIPS32
>> 1554 select CPU_SUPPORTS_32BIT_KERNEL
>> 1555 select DMA_NONCOHERENT
>> 1556 select IRQ_CPU
>> 1557 select SWAP_IO_SPACE
>> 1558 select WEAK_ORDERING
1246 1559
1247 config X86_16BIT !! 1560 config SYS_HAS_CPU_LOONGSON2E
1248 bool "Enable support for 16-bit segme !! 1561 bool
1249 default y <<
1250 depends on MODIFY_LDT_SYSCALL <<
1251 help <<
1252 This option is required by programs <<
1253 protected mode legacy code on x86 p <<
1254 this option saves about 300 bytes o <<
1255 plus 16K runtime memory on x86-64, <<
1256 1562
1257 config X86_ESPFIX32 !! 1563 config SYS_HAS_CPU_LOONGSON2F
1258 def_bool y !! 1564 bool
1259 depends on X86_16BIT && X86_32 !! 1565 select CPU_SUPPORTS_CPUFREQ
>> 1566 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
>> 1567 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1260 1568
1261 config X86_ESPFIX64 !! 1569 config SYS_HAS_CPU_LOONGSON1B
1262 def_bool y !! 1570 bool
1263 depends on X86_16BIT && X86_64 <<
1264 1571
1265 config X86_VSYSCALL_EMULATION !! 1572 config SYS_HAS_CPU_MIPS32_R1
1266 bool "Enable vsyscall emulation" if E !! 1573 bool
1267 default y <<
1268 depends on X86_64 <<
1269 help <<
1270 This enables emulation of the legac <<
1271 it is roughly equivalent to booting <<
1272 that it will also disable the helpf <<
1273 tries to use a vsyscall. With this <<
1274 programs will just segfault, citing <<
1275 0xffffffffff600?00. <<
1276 1574
1277 This option is required by many pro !! 1575 config SYS_HAS_CPU_MIPS32_R2
1278 care should be used even with newer !! 1576 bool
1279 1577
1280 Disabling this option saves about 7 !! 1578 config SYS_HAS_CPU_MIPS64_R1
1281 possibly 4K of additional runtime p !! 1579 bool
1282 1580
1283 config X86_IOPL_IOPERM !! 1581 config SYS_HAS_CPU_MIPS64_R2
1284 bool "IOPERM and IOPL Emulation" !! 1582 bool
1285 default y <<
1286 help <<
1287 This enables the ioperm() and iopl( <<
1288 for legacy applications. <<
1289 1583
1290 Legacy IOPL support is an overbroad !! 1584 config SYS_HAS_CPU_R3000
1291 space aside of accessing all 65536 !! 1585 bool
1292 interrupts. To gain this access the <<
1293 capabilities and permission from po <<
1294 modules. <<
1295 1586
1296 The emulation restricts the functio !! 1587 config SYS_HAS_CPU_TX39XX
1297 only allowing the full range I/O po !! 1588 bool
1298 ability to disable interrupts from <<
1299 granted if the hardware IOPL mechan <<
1300 1589
1301 config TOSHIBA !! 1590 config SYS_HAS_CPU_VR41XX
1302 tristate "Toshiba Laptop support" !! 1591 bool
1303 depends on X86_32 <<
1304 help <<
1305 This adds a driver to safely access <<
1306 the CPU on Toshiba portables with a <<
1307 not work on models with a Phoenix B <<
1308 is used to set the BIOS and power s <<
1309 1592
1310 For information on utilities to mak !! 1593 config SYS_HAS_CPU_R4300
1311 Toshiba Linux utilities web site at !! 1594 bool
1312 <http://www.buzzard.org.uk/toshiba/ <<
1313 1595
1314 Say Y if you intend to run this ker !! 1596 config SYS_HAS_CPU_R4X00
1315 Say N otherwise. !! 1597 bool
1316 1598
1317 config X86_REBOOTFIXUPS !! 1599 config SYS_HAS_CPU_TX49XX
1318 bool "Enable X86 board specific fixup !! 1600 bool
1319 depends on X86_32 <<
1320 help <<
1321 This enables chipset and/or board s <<
1322 in order to get reboot to work corr <<
1323 some combinations of hardware and B <<
1324 this config is intended, is when re <<
1325 system. <<
1326 1601
1327 Currently, the only fixup is for th !! 1602 config SYS_HAS_CPU_R5000
1328 CS5530A and CS5536 chipsets and the !! 1603 bool
1329 1604
1330 Say Y if you want to enable the fix !! 1605 config SYS_HAS_CPU_R5432
1331 enable this option even if you don' !! 1606 bool
1332 Say N otherwise. <<
1333 1607
1334 config MICROCODE !! 1608 config SYS_HAS_CPU_R5500
1335 def_bool y !! 1609 bool
1336 depends on CPU_SUP_AMD || CPU_SUP_INT <<
1337 1610
1338 config MICROCODE_INITRD32 !! 1611 config SYS_HAS_CPU_R6000
1339 def_bool y !! 1612 bool
1340 depends on MICROCODE && X86_32 && BLK <<
1341 1613
1342 config MICROCODE_LATE_LOADING !! 1614 config SYS_HAS_CPU_NEVADA
1343 bool "Late microcode loading (DANGERO !! 1615 bool
1344 default n <<
1345 depends on MICROCODE && SMP <<
1346 help <<
1347 Loading microcode late, when the sy <<
1348 is a tricky business and should be <<
1349 of synchronizing all cores and SMT <<
1350 not guarantee that cores might not <<
1351 use this at your own risk. Late loa <<
1352 microcode header indicates that it <<
1353 minimal revision check. This minima <<
1354 the kernel command line with "micro <<
1355 1616
1356 config MICROCODE_LATE_FORCE_MINREV !! 1617 config SYS_HAS_CPU_R8000
1357 bool "Enforce late microcode loading !! 1618 bool
1358 default n <<
1359 depends on MICROCODE_LATE_LOADING <<
1360 help <<
1361 To prevent that users load microcod <<
1362 in use features, newer microcode pa <<
1363 in the microcode header, which tell <<
1364 revision must be active in the CPU <<
1365 late into the running system. If di <<
1366 be enforced but the kernel will be <<
1367 revision check fails. <<
1368 <<
1369 This minimal revision check can als <<
1370 "microcode.minrev" parameter on the <<
1371 <<
1372 If unsure say Y. <<
1373 <<
1374 config X86_MSR <<
1375 tristate "/dev/cpu/*/msr - Model-spec <<
1376 help <<
1377 This device gives privileged proces <<
1378 Model-Specific Registers (MSRs). I <<
1379 major 202 and minors 0 to 31 for /d <<
1380 MSR accesses are directed to a spec <<
1381 systems. <<
1382 1619
1383 config X86_CPUID !! 1620 config SYS_HAS_CPU_R10000
1384 tristate "/dev/cpu/*/cpuid - CPU info !! 1621 bool
1385 help <<
1386 This device gives processes access <<
1387 be executed on a specific processor <<
1388 with major 203 and minors 0 to 31 f <<
1389 /dev/cpu/31/cpuid. <<
1390 1622
1391 choice !! 1623 config SYS_HAS_CPU_RM7000
1392 prompt "High Memory Support" !! 1624 bool
1393 default HIGHMEM4G <<
1394 depends on X86_32 <<
1395 <<
1396 config NOHIGHMEM <<
1397 bool "off" <<
1398 help <<
1399 Linux can use up to 64 Gigabytes of <<
1400 However, the address space of 32-bi <<
1401 Gigabytes large. That means that, i <<
1402 physical memory, not all of it can <<
1403 kernel. The physical memory that's <<
1404 "high memory". <<
1405 <<
1406 If you are compiling a kernel which <<
1407 more than 1 Gigabyte total physical <<
1408 choice and suitable for most users) <<
1409 split: 3GB are mapped so that each <<
1410 space and the remaining part of the <<
1411 by the kernel to permanently map as <<
1412 possible. <<
1413 <<
1414 If the machine has between 1 and 4 <<
1415 answer "4GB" here. <<
1416 <<
1417 If more than 4 Gigabytes is used th <<
1418 selection turns Intel PAE (Physical <<
1419 PAE implements 3-level paging on IA <<
1420 supported by Linux, PAE mode is imp <<
1421 processors (Pentium Pro and better) <<
1422 then the kernel will not boot on CP <<
1423 <<
1424 The actual amount of total physical <<
1425 auto detected or can be forced by u <<
1426 such as "mem=256M". (Try "man bootp <<
1427 your boot loader (lilo or loadlin) <<
1428 kernel at boot time.) <<
1429 <<
1430 If unsure, say "off". <<
1431 <<
1432 config HIGHMEM4G <<
1433 bool "4GB" <<
1434 help <<
1435 Select this if you have a 32-bit pr <<
1436 gigabytes of physical RAM. <<
1437 <<
1438 config HIGHMEM64G <<
1439 bool "64GB" <<
1440 depends on X86_HAVE_PAE <<
1441 select X86_PAE <<
1442 help <<
1443 Select this if you have a 32-bit pr <<
1444 gigabytes of physical RAM. <<
1445 1625
1446 endchoice !! 1626 config SYS_HAS_CPU_SB1
>> 1627 bool
1447 1628
1448 choice !! 1629 config SYS_HAS_CPU_CAVIUM_OCTEON
1449 prompt "Memory split" if EXPERT !! 1630 bool
1450 default VMSPLIT_3G <<
1451 depends on X86_32 <<
1452 help <<
1453 Select the desired split between ke <<
1454 <<
1455 If the address range available to t <<
1456 physical memory installed, the rema <<
1457 as "high memory". Accessing high me <<
1458 than low memory, as it needs to be <<
1459 Note that increasing the kernel add <<
1460 available to user programs, making <<
1461 tighter. Selecting anything other <<
1462 will also likely make your kernel i <<
1463 kernel modules. <<
1464 <<
1465 If you are not absolutely sure what <<
1466 option alone! <<
1467 <<
1468 config VMSPLIT_3G <<
1469 bool "3G/1G user/kernel split <<
1470 config VMSPLIT_3G_OPT <<
1471 depends on !X86_PAE <<
1472 bool "3G/1G user/kernel split <<
1473 config VMSPLIT_2G <<
1474 bool "2G/2G user/kernel split <<
1475 config VMSPLIT_2G_OPT <<
1476 depends on !X86_PAE <<
1477 bool "2G/2G user/kernel split <<
1478 config VMSPLIT_1G <<
1479 bool "1G/3G user/kernel split <<
1480 endchoice <<
1481 1631
1482 config PAGE_OFFSET !! 1632 config SYS_HAS_CPU_BMIPS3300
1483 hex !! 1633 bool
1484 default 0xB0000000 if VMSPLIT_3G_OPT <<
1485 default 0x80000000 if VMSPLIT_2G <<
1486 default 0x78000000 if VMSPLIT_2G_OPT <<
1487 default 0x40000000 if VMSPLIT_1G <<
1488 default 0xC0000000 <<
1489 depends on X86_32 <<
1490 1634
1491 config HIGHMEM !! 1635 config SYS_HAS_CPU_BMIPS4350
1492 def_bool y !! 1636 bool
1493 depends on X86_32 && (HIGHMEM64G || H <<
1494 1637
1495 config X86_PAE !! 1638 config SYS_HAS_CPU_BMIPS4380
1496 bool "PAE (Physical Address Extension !! 1639 bool
1497 depends on X86_32 && X86_HAVE_PAE <<
1498 select PHYS_ADDR_T_64BIT <<
1499 select SWIOTLB <<
1500 help <<
1501 PAE is required for NX support, and <<
1502 larger swapspace support for non-ov <<
1503 has the cost of more pagetable look <<
1504 consumes more pagetable space per p <<
1505 1640
1506 config X86_5LEVEL !! 1641 config SYS_HAS_CPU_BMIPS5000
1507 bool "Enable 5-level page tables supp !! 1642 bool
1508 default y <<
1509 select DYNAMIC_MEMORY_LAYOUT <<
1510 select SPARSEMEM_VMEMMAP <<
1511 depends on X86_64 <<
1512 help <<
1513 5-level paging enables access to la <<
1514 up to 128 PiB of virtual address sp <<
1515 physical address space. <<
1516 1643
1517 It will be supported by future Inte !! 1644 config SYS_HAS_CPU_XLR
>> 1645 bool
1518 1646
1519 A kernel with the option enabled ca !! 1647 config SYS_HAS_CPU_XLP
1520 support 4- or 5-level paging. !! 1648 bool
1521 1649
1522 See Documentation/arch/x86/x86_64/5 !! 1650 #
1523 information. !! 1651 # CPU may reorder R->R, R->W, W->R, W->W
>> 1652 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
>> 1653 #
>> 1654 config WEAK_ORDERING
>> 1655 bool
1524 1656
1525 Say N if unsure. !! 1657 #
>> 1658 # CPU may reorder reads and writes beyond LL/SC
>> 1659 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
>> 1660 #
>> 1661 config WEAK_REORDERING_BEYOND_LLSC
>> 1662 bool
>> 1663 endmenu
1526 1664
1527 config X86_DIRECT_GBPAGES !! 1665 #
1528 def_bool y !! 1666 # These two indicate any level of the MIPS32 and MIPS64 architecture
1529 depends on X86_64 !! 1667 #
1530 help !! 1668 config CPU_MIPS32
1531 Certain kernel features effectively !! 1669 bool
1532 linear 1 GB mappings (even if the C !! 1670 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1533 supports them), so don't confuse th <<
1534 that we have them enabled. <<
1535 <<
1536 config X86_CPA_STATISTICS <<
1537 bool "Enable statistic for Change Pag <<
1538 depends on DEBUG_FS <<
1539 help <<
1540 Expose statistics about the Change <<
1541 helps to determine the effectivenes <<
1542 page mappings when mapping protecti <<
1543 <<
1544 config X86_MEM_ENCRYPT <<
1545 select ARCH_HAS_FORCE_DMA_UNENCRYPTED <<
1546 select DYNAMIC_PHYSICAL_MASK <<
1547 def_bool n <<
1548 1671
1549 config AMD_MEM_ENCRYPT !! 1672 config CPU_MIPS64
1550 bool "AMD Secure Memory Encryption (S !! 1673 bool
1551 depends on X86_64 && CPU_SUP_AMD !! 1674 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1552 depends on EFI_STUB <<
1553 select DMA_COHERENT_POOL <<
1554 select ARCH_USE_MEMREMAP_PROT <<
1555 select INSTRUCTION_DECODER <<
1556 select ARCH_HAS_CC_PLATFORM <<
1557 select X86_MEM_ENCRYPT <<
1558 select UNACCEPTED_MEMORY <<
1559 help <<
1560 Say yes to enable support for the e <<
1561 This requires an AMD processor that <<
1562 Encryption (SME). <<
1563 1675
1564 # Common NUMA Features !! 1676 #
1565 config NUMA !! 1677 # These two indicate the revision of the architecture, either Release 1 or Release 2
1566 bool "NUMA Memory Allocation and Sche !! 1678 #
1567 depends on SMP !! 1679 config CPU_MIPSR1
1568 depends on X86_64 || (X86_32 && HIGHM !! 1680 bool
1569 default y if X86_BIGSMP !! 1681 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1570 select USE_PERCPU_NUMA_NODE_ID <<
1571 select OF_NUMA if OF <<
1572 help <<
1573 Enable NUMA (Non-Uniform Memory Acc <<
1574 1682
1575 The kernel will try to allocate mem !! 1683 config CPU_MIPSR2
1576 local memory controller of the CPU !! 1684 bool
1577 NUMA awareness to the kernel. !! 1685 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1578 1686
1579 For 64-bit this is recommended if t !! 1687 config SYS_SUPPORTS_32BIT_KERNEL
1580 (or later), AMD Opteron, or EM64T N !! 1688 bool
>> 1689 config SYS_SUPPORTS_64BIT_KERNEL
>> 1690 bool
>> 1691 config CPU_SUPPORTS_32BIT_KERNEL
>> 1692 bool
>> 1693 config CPU_SUPPORTS_64BIT_KERNEL
>> 1694 bool
>> 1695 config CPU_SUPPORTS_CPUFREQ
>> 1696 bool
>> 1697 config CPU_SUPPORTS_ADDRWINCFG
>> 1698 bool
>> 1699 config CPU_SUPPORTS_HUGEPAGES
>> 1700 bool
>> 1701 config CPU_SUPPORTS_UNCACHED_ACCELERATED
>> 1702 bool
>> 1703 config MIPS_PGD_C0_CONTEXT
>> 1704 bool
>> 1705 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1581 1706
1582 For 32-bit this is only needed if y !! 1707 #
1583 kernel on a 64-bit NUMA platform. !! 1708 # Set to y for ptrace access to watch registers.
>> 1709 #
>> 1710 config HARDWARE_WATCHPOINTS
>> 1711 bool
>> 1712 default y if CPU_MIPSR1 || CPU_MIPSR2
1584 1713
1585 Otherwise, you should say N. !! 1714 menu "Kernel type"
1586 1715
1587 config AMD_NUMA !! 1716 choice
1588 def_bool y !! 1717 prompt "Kernel code model"
1589 prompt "Old style AMD Opteron NUMA de <<
1590 depends on X86_64 && NUMA && PCI <<
1591 help 1718 help
1592 Enable AMD NUMA node topology detec !! 1719 You should only select this option if you have a workload that
1593 you have a multi processor AMD syst !! 1720 actually benefits from 64-bit processing or if your machine has
1594 read the NUMA configuration directl !! 1721 large memory. You will only be presented a single option in this
1595 of Opteron. It is recommended to us !! 1722 menu if your system does not support both 32-bit and 64-bit kernels.
1596 which also takes priority if both a !! 1723
1597 !! 1724 config 32BIT
1598 config X86_64_ACPI_NUMA !! 1725 bool "32-bit kernel"
1599 def_bool y !! 1726 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1600 prompt "ACPI NUMA detection" !! 1727 select TRAD_SIGNALS
1601 depends on X86_64 && NUMA && ACPI && <<
1602 select ACPI_NUMA <<
1603 help 1728 help
1604 Enable ACPI SRAT based node topolog !! 1729 Select this option if you want to build a 32-bit kernel.
1605 !! 1730 config 64BIT
1606 config NODES_SHIFT !! 1731 bool "64-bit kernel"
1607 int "Maximum NUMA Nodes (as a power o !! 1732 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1608 range 1 10 <<
1609 default "10" if MAXSMP <<
1610 default "6" if X86_64 <<
1611 default "3" <<
1612 depends on NUMA <<
1613 help 1733 help
1614 Specify the maximum number of NUMA !! 1734 Select this option if you want to build a 64-bit kernel.
1615 system. Increases memory reserved <<
1616 <<
1617 config ARCH_FLATMEM_ENABLE <<
1618 def_bool y <<
1619 depends on X86_32 && !NUMA <<
1620 <<
1621 config ARCH_SPARSEMEM_ENABLE <<
1622 def_bool y <<
1623 depends on X86_64 || NUMA || X86_32 | <<
1624 select SPARSEMEM_STATIC if X86_32 <<
1625 select SPARSEMEM_VMEMMAP_ENABLE if X8 <<
1626 <<
1627 config ARCH_SPARSEMEM_DEFAULT <<
1628 def_bool X86_64 || (NUMA && X86_32) <<
1629 1735
1630 config ARCH_SELECT_MEMORY_MODEL !! 1736 endchoice
1631 def_bool y <<
1632 depends on ARCH_SPARSEMEM_ENABLE && A <<
1633 1737
1634 config ARCH_MEMORY_PROBE !! 1738 config KVM_GUEST
1635 bool "Enable sysfs memory/probe inter !! 1739 bool "KVM Guest Kernel"
1636 depends on MEMORY_HOTPLUG <<
1637 help 1740 help
1638 This option enables a sysfs memory/ !! 1741 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1639 See Documentation/admin-guide/mm/me <<
1640 If you are unsure how to answer thi <<
1641 1742
1642 config ARCH_PROC_KCORE_TEXT !! 1743 config KVM_HOST_FREQ
1643 def_bool y !! 1744 int "KVM Host Processor Frequency (MHz)"
1644 depends on X86_64 && PROC_KCORE !! 1745 depends on KVM_GUEST
1645 !! 1746 default 500
1646 config ILLEGAL_POINTER_VALUE !! 1747 help
1647 hex !! 1748 Select this option if building a guest kernel for KVM to skip
1648 default 0 if X86_32 !! 1749 RTC emulation when determining guest CPU Frequency. Instead, the guest
1649 default 0xdead000000000000 if X86_64 !! 1750 processor frequency is automatically derived from the host frequency.
1650 <<
1651 config X86_PMEM_LEGACY_DEVICE <<
1652 bool <<
1653 <<
1654 config X86_PMEM_LEGACY <<
1655 tristate "Support non-standard NVDIMM <<
1656 depends on PHYS_ADDR_T_64BIT <<
1657 depends on BLK_DEV <<
1658 select X86_PMEM_LEGACY_DEVICE <<
1659 select NUMA_KEEP_MEMINFO if NUMA <<
1660 select LIBNVDIMM <<
1661 help <<
1662 Treat memory marked using the non-s <<
1663 by the Intel Sandy Bridge-EP refere <<
1664 The kernel will offer these regions <<
1665 they can be used for persistent sto <<
1666 <<
1667 Say Y if unsure. <<
1668 <<
1669 config HIGHPTE <<
1670 bool "Allocate 3rd-level pagetables f <<
1671 depends on HIGHMEM <<
1672 help <<
1673 The VM uses one page table entry fo <<
1674 For systems with a lot of RAM, this <<
1675 low memory. Setting this option wi <<
1676 entries in high memory. <<
1677 <<
1678 config X86_CHECK_BIOS_CORRUPTION <<
1679 bool "Check for low memory corruption <<
1680 help <<
1681 Periodically check for memory corru <<
1682 is suspected to be caused by BIOS. <<
1683 configuration, it is disabled at ru <<
1684 setting "memory_corruption_check=1" <<
1685 line. By default it scans the low <<
1686 seconds; see the memory_corruption_ <<
1687 memory_corruption_check_period para <<
1688 Documentation/admin-guide/kernel-pa <<
1689 <<
1690 When enabled with the default param <<
1691 almost no overhead, as it reserves <<
1692 of memory and scans it infrequently <<
1693 and prevents it from affecting the <<
1694 <<
1695 It is, however, intended as a diagn <<
1696 BIOS-originated corruption always a <<
1697 you can use memmap= to prevent the <<
1698 memory. <<
1699 <<
1700 config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK <<
1701 bool "Set the default setting of memo <<
1702 depends on X86_CHECK_BIOS_CORRUPTION <<
1703 default y <<
1704 help <<
1705 Set whether the default state of me <<
1706 on or off. <<
1707 <<
1708 config MATH_EMULATION <<
1709 bool <<
1710 depends on MODIFY_LDT_SYSCALL <<
1711 prompt "Math emulation" if X86_32 && <<
1712 help <<
1713 Linux can emulate a math coprocesso <<
1714 operations) if you don't have one. <<
1715 a math coprocessor built in, 486SX <<
1716 a 487DX or 387, respectively. (The <<
1717 give you some hints here ["man dmes <<
1718 coprocessor or this emulation. <<
1719 <<
1720 If you don't have a math coprocesso <<
1721 say Y here even though you have a c <<
1722 be used nevertheless. (This behavio <<
1723 command line option "no387", which <<
1724 is broken. Try "man bootparam" or s <<
1725 loader (lilo or loadlin) about how <<
1726 boot time.) This means that it is a <<
1727 intend to use this kernel on differ <<
1728 1751
1729 More information about the internal !! 1752 choice
1730 emulation can be found in <file:arc !! 1753 prompt "Kernel page size"
>> 1754 default PAGE_SIZE_4KB
1731 1755
1732 If you are not sure, say Y; apart f !! 1756 config PAGE_SIZE_4KB
1733 kernel, it won't hurt. !! 1757 bool "4kB"
>> 1758 depends on !CPU_LOONGSON2
>> 1759 help
>> 1760 This option select the standard 4kB Linux page size. On some
>> 1761 R3000-family processors this is the only available page size. Using
>> 1762 4kB page size will minimize memory consumption and is therefore
>> 1763 recommended for low memory systems.
>> 1764
>> 1765 config PAGE_SIZE_8KB
>> 1766 bool "8kB"
>> 1767 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
>> 1768 help
>> 1769 Using 8kB page size will result in higher performance kernel at
>> 1770 the price of higher memory consumption. This option is available
>> 1771 only on R8000 and cnMIPS processors. Note that you will need a
>> 1772 suitable Linux distribution to support this.
>> 1773
>> 1774 config PAGE_SIZE_16KB
>> 1775 bool "16kB"
>> 1776 depends on !CPU_R3000 && !CPU_TX39XX
>> 1777 help
>> 1778 Using 16kB page size will result in higher performance kernel at
>> 1779 the price of higher memory consumption. This option is available on
>> 1780 all non-R3000 family processors. Note that you will need a suitable
>> 1781 Linux distribution to support this.
>> 1782
>> 1783 config PAGE_SIZE_32KB
>> 1784 bool "32kB"
>> 1785 depends on CPU_CAVIUM_OCTEON
>> 1786 help
>> 1787 Using 32kB page size will result in higher performance kernel at
>> 1788 the price of higher memory consumption. This option is available
>> 1789 only on cnMIPS cores. Note that you will need a suitable Linux
>> 1790 distribution to support this.
>> 1791
>> 1792 config PAGE_SIZE_64KB
>> 1793 bool "64kB"
>> 1794 depends on !CPU_R3000 && !CPU_TX39XX
>> 1795 help
>> 1796 Using 64kB page size will result in higher performance kernel at
>> 1797 the price of higher memory consumption. This option is available on
>> 1798 all non-R3000 family processor. Not that at the time of this
>> 1799 writing this option is still high experimental.
1734 1800
1735 config MTRR !! 1801 endchoice
1736 def_bool y <<
1737 prompt "MTRR (Memory Type Range Regis <<
1738 help <<
1739 On Intel P6 family processors (Pent <<
1740 the Memory Type Range Registers (MT <<
1741 processor access to memory ranges. <<
1742 a video (VGA) card on a PCI or AGP <<
1743 allows bus write transfers to be co <<
1744 before bursting over the PCI/AGP bu <<
1745 of image write operations 2.5 times <<
1746 /proc/mtrr file which may be used t <<
1747 MTRRs. Typically the X server shoul <<
1748 <<
1749 This code has a reasonably generic <<
1750 control registers on other processo <<
1751 as well: <<
1752 <<
1753 The Cyrix 6x86, 6x86MX and M II pro <<
1754 Registers (ARRs) which provide a si <<
1755 these, the ARRs are used to emulate <<
1756 The AMD K6-2 (stepping 8 and above) <<
1757 MTRRs. The Centaur C6 (WinChip) has <<
1758 write-combining. All of these proce <<
1759 and it makes sense to say Y here if <<
1760 <<
1761 Saying Y here also fixes a problem <<
1762 set the MTRRs for the boot CPU and <<
1763 can lead to all sorts of problems, <<
1764 1802
1765 You can safely say Y even if your m !! 1803 config FORCE_MAX_ZONEORDER
1766 just add about 9 KB to your kernel. !! 1804 int "Maximum zone order"
>> 1805 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
>> 1806 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
>> 1807 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
>> 1808 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
>> 1809 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
>> 1810 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
>> 1811 range 11 64
>> 1812 default "11"
>> 1813 help
>> 1814 The kernel memory allocator divides physically contiguous memory
>> 1815 blocks into "zones", where each zone is a power of two number of
>> 1816 pages. This option selects the largest power of two that the kernel
>> 1817 keeps in the memory allocator. If you need to allocate very large
>> 1818 blocks of physically contiguous memory, then you may need to
>> 1819 increase this value.
>> 1820
>> 1821 This config option is actually maximum order plus one. For example,
>> 1822 a value of 11 means that the largest free memory block is 2^10 pages.
>> 1823
>> 1824 The page size is not necessarily 4KB. Keep this in mind
>> 1825 when choosing a value for this option.
>> 1826
>> 1827 config CEVT_GIC
>> 1828 bool "Use GIC global counter for clock events"
>> 1829 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
>> 1830 help
>> 1831 Use the GIC global counter for the clock events. The R4K clock
>> 1832 event driver is always present, so if the platform ends up not
>> 1833 detecting a GIC, it will fall back to the R4K timer for the
>> 1834 generation of clock events.
1767 1835
1768 See <file:Documentation/arch/x86/mt !! 1836 config BOARD_SCACHE
>> 1837 bool
1769 1838
1770 config MTRR_SANITIZER !! 1839 config IP22_CPU_SCACHE
1771 def_bool y !! 1840 bool
1772 prompt "MTRR cleanup support" !! 1841 select BOARD_SCACHE
1773 depends on MTRR <<
1774 help <<
1775 Convert MTRR layout from continuous <<
1776 add writeback entries. <<
1777 1842
1778 Can be disabled with disable_mtrr_c !! 1843 #
1779 The largest mtrr entry size for a c !! 1844 # Support for a MIPS32 / MIPS64 style S-caches
1780 mtrr_chunk_size. !! 1845 #
>> 1846 config MIPS_CPU_SCACHE
>> 1847 bool
>> 1848 select BOARD_SCACHE
1781 1849
1782 If unsure, say Y. !! 1850 config R5000_CPU_SCACHE
>> 1851 bool
>> 1852 select BOARD_SCACHE
1783 1853
1784 config MTRR_SANITIZER_ENABLE_DEFAULT !! 1854 config RM7000_CPU_SCACHE
1785 int "MTRR cleanup enable value (0-1)" !! 1855 bool
1786 range 0 1 !! 1856 select BOARD_SCACHE
1787 default "0" <<
1788 depends on MTRR_SANITIZER <<
1789 help <<
1790 Enable mtrr cleanup default value <<
1791 <<
1792 config MTRR_SANITIZER_SPARE_REG_NR_DEFAULT <<
1793 int "MTRR cleanup spare reg num (0-7) <<
1794 range 0 7 <<
1795 default "1" <<
1796 depends on MTRR_SANITIZER <<
1797 help <<
1798 mtrr cleanup spare entries default, <<
1799 mtrr_spare_reg_nr=N on the kernel c <<
1800 1857
1801 config X86_PAT !! 1858 config SIBYTE_DMA_PAGEOPS
1802 def_bool y !! 1859 bool "Use DMA to clear/copy pages"
1803 prompt "x86 PAT support" if EXPERT !! 1860 depends on CPU_SB1
1804 depends on MTRR <<
1805 select ARCH_USES_PG_ARCH_2 <<
1806 help 1861 help
1807 Use PAT attributes to setup page le !! 1862 Instead of using the CPU to zero and copy pages, use a Data Mover
1808 !! 1863 channel. These DMA channels are otherwise unused by the standard
1809 PATs are the modern equivalents of !! 1864 SiByte Linux port. Seems to give a small performance benefit.
1810 flexible than MTRRs. <<
1811 1865
1812 Say N here if you see bootup proble !! 1866 config CPU_HAS_PREFETCH
1813 spontaneous reboots) or a non-worki !! 1867 bool
1814 1868
1815 If unsure, say Y. !! 1869 config CPU_GENERIC_DUMP_TLB
>> 1870 bool
>> 1871 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1816 1872
1817 config X86_UMIP !! 1873 config CPU_R4K_FPU
1818 def_bool y !! 1874 bool
1819 prompt "User Mode Instruction Prevent !! 1875 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1820 help <<
1821 User Mode Instruction Prevention (U <<
1822 some x86 processors. If enabled, a <<
1823 issued if the SGDT, SLDT, SIDT, SMS <<
1824 executed in user mode. These instru <<
1825 information about the hardware stat <<
1826 <<
1827 The vast majority of applications d <<
1828 For the very few that do, software <<
1829 specific cases in protected and vir <<
1830 results are dummy. <<
1831 <<
1832 config CC_HAS_IBT <<
1833 # GCC >= 9 and binutils >= 2.29 <<
1834 # Retpoline check to work around http <<
1835 # Clang/LLVM >= 14 <<
1836 # https://github.com/llvm/llvm-projec <<
1837 # https://github.com/llvm/llvm-projec <<
1838 def_bool ((CC_IS_GCC && $(cc-option, <<
1839 (CC_IS_CLANG && CLANG_VERSI <<
1840 $(as-instr,endbr64) <<
1841 1876
1842 config X86_CET !! 1877 config CPU_R4K_CACHE_TLB
1843 def_bool n !! 1878 bool
1844 help !! 1879 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1845 CET features configured (Shadow sta <<
1846 1880
1847 config X86_KERNEL_IBT !! 1881 choice
1848 prompt "Indirect Branch Tracking" !! 1882 prompt "MIPS MT options"
1849 def_bool y <<
1850 depends on X86_64 && CC_HAS_IBT && HA <<
1851 # https://github.com/llvm/llvm-projec <<
1852 depends on !LD_IS_LLD || LLD_VERSION <<
1853 select OBJTOOL <<
1854 select X86_CET <<
1855 help <<
1856 Build the kernel with support for I <<
1857 hardware support course-grain forwa <<
1858 protection. It enforces that all in <<
1859 an ENDBR instruction, as such, the <<
1860 code with them to make this happen. <<
1861 <<
1862 In addition to building the kernel <<
1863 are not indirect call targets, avoi <<
1864 <<
1865 This requires LTO like objtool runs <<
1866 does significantly reduce the numbe <<
1867 kernel image. <<
1868 1883
1869 config X86_INTEL_MEMORY_PROTECTION_KEYS !! 1884 config MIPS_MT_DISABLED
1870 prompt "Memory Protection Keys" !! 1885 bool "Disable multithreading support."
1871 def_bool y <<
1872 # Note: only available in 64-bit mode <<
1873 depends on X86_64 && (CPU_SUP_INTEL | <<
1874 select ARCH_USES_HIGH_VMA_FLAGS <<
1875 select ARCH_HAS_PKEYS <<
1876 help 1886 help
1877 Memory Protection Keys provides a m !! 1887 Use this option if your workload can't take advantage of
1878 page-based protections, but without !! 1888 MIPS hardware multithreading support. On systems that don't have
1879 page tables when an application cha !! 1889 the option of an MT-enabled processor this option will be the only
>> 1890 option in this menu.
>> 1891
>> 1892 config MIPS_MT_SMP
>> 1893 bool "Use 1 TC on each available VPE for SMP"
>> 1894 depends on SYS_SUPPORTS_MULTITHREADING
>> 1895 select CPU_MIPSR2_IRQ_VI
>> 1896 select CPU_MIPSR2_IRQ_EI
>> 1897 select MIPS_MT
>> 1898 select NR_CPUS_DEFAULT_2
>> 1899 select SMP
>> 1900 select SYS_SUPPORTS_SCHED_SMT if SMP
>> 1901 select SYS_SUPPORTS_SMP
>> 1902 select SMP_UP
>> 1903 select MIPS_PERF_SHARED_TC_COUNTERS
>> 1904 help
>> 1905 This is a kernel model which is known a VSMP but lately has been
>> 1906 marketesed into SMVP.
>> 1907 Virtual SMP uses the processor's VPEs to implement virtual
>> 1908 processors. In currently available configuration of the 34K processor
>> 1909 this allows for a dual processor. Both processors will share the same
>> 1910 primary caches; each will obtain the half of the TLB for it's own
>> 1911 exclusive use. For a layman this model can be described as similar to
>> 1912 what Intel calls Hyperthreading.
>> 1913
>> 1914 For further information see http://www.linux-mips.org/wiki/34K#VSMP
>> 1915
>> 1916 config MIPS_MT_SMTC
>> 1917 bool "SMTC: Use all TCs on all VPEs for SMP"
>> 1918 depends on CPU_MIPS32_R2
>> 1919 #depends on CPU_MIPS64_R2 # once there is hardware ...
>> 1920 depends on SYS_SUPPORTS_MULTITHREADING
>> 1921 select CPU_MIPSR2_IRQ_VI
>> 1922 select CPU_MIPSR2_IRQ_EI
>> 1923 select MIPS_MT
>> 1924 select NR_CPUS_DEFAULT_8
>> 1925 select SMP
>> 1926 select SYS_SUPPORTS_SMP
>> 1927 select SMP_UP
>> 1928 help
>> 1929 This is a kernel model which is known a SMTC or lately has been
>> 1930 marketesed into SMVP.
>> 1931 is presenting the available TC's of the core as processors to Linux.
>> 1932 On currently available 34K processors this means a Linux system will
>> 1933 see up to 5 processors. The implementation of the SMTC kernel differs
>> 1934 significantly from VSMP and cannot efficiently coexist in the same
>> 1935 kernel binary so the choice between VSMP and SMTC is a compile time
>> 1936 decision.
1880 1937
1881 For details, see Documentation/core !! 1938 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1882 1939
1883 If unsure, say y. !! 1940 endchoice
1884 1941
1885 config ARCH_PKEY_BITS !! 1942 config MIPS_MT
1886 int !! 1943 bool
1887 default 4 <<
1888 1944
1889 choice !! 1945 config SCHED_SMT
1890 prompt "TSX enable mode" !! 1946 bool "SMT (multithreading) scheduler support"
1891 depends on CPU_SUP_INTEL !! 1947 depends on SYS_SUPPORTS_SCHED_SMT
1892 default X86_INTEL_TSX_MODE_OFF !! 1948 default n
1893 help 1949 help
1894 Intel's TSX (Transactional Synchron !! 1950 SMT scheduler support improves the CPU scheduler's decision making
1895 allows to optimize locking protocol !! 1951 when dealing with MIPS MT enabled cores at a cost of slightly
1896 can lead to a noticeable performanc !! 1952 increased overhead in some places. If unsure say N here.
1897 <<
1898 On the other hand it has been shown <<
1899 to form side channel attacks (e.g. <<
1900 will be more of those attacks disco <<
1901 1953
1902 Therefore TSX is not enabled by def !! 1954 config SYS_SUPPORTS_SCHED_SMT
1903 might override this decision by tsx !! 1955 bool
1904 Even with TSX enabled, the kernel w <<
1905 possible TAA mitigation setting dep <<
1906 for the particular machine. <<
1907 1956
1908 This option allows to set the defau !! 1957 config SYS_SUPPORTS_MULTITHREADING
1909 and =auto. See Documentation/admin- !! 1958 bool
1910 details. <<
1911 1959
1912 Say off if not sure, auto if TSX is !! 1960 config MIPS_MT_FPAFF
1913 platforms or on if TSX is in use an !! 1961 bool "Dynamic FPU affinity for FP-intensive threads"
1914 relevant. !! 1962 default y
>> 1963 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1915 1964
1916 config X86_INTEL_TSX_MODE_OFF !! 1965 config MIPS_VPE_LOADER
1917 bool "off" !! 1966 bool "VPE loader support."
>> 1967 depends on SYS_SUPPORTS_MULTITHREADING
>> 1968 select CPU_MIPSR2_IRQ_VI
>> 1969 select CPU_MIPSR2_IRQ_EI
>> 1970 select MIPS_MT
>> 1971 help
>> 1972 Includes a loader for loading an elf relocatable object
>> 1973 onto another VPE and running it.
>> 1974
>> 1975 config MIPS_MT_SMTC_IM_BACKSTOP
>> 1976 bool "Use per-TC register bits as backstop for inhibited IM bits"
>> 1977 depends on MIPS_MT_SMTC
>> 1978 default n
1918 help 1979 help
1919 TSX is disabled if possible - equal !! 1980 To support multiple TC microthreads acting as "CPUs" within
1920 !! 1981 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1921 config X86_INTEL_TSX_MODE_ON !! 1982 during interrupt handling. To support legacy drivers and interrupt
1922 bool "on" !! 1983 controller management code, SMTC has a "backstop" to track and
>> 1984 if necessary restore the interrupt mask. This has some performance
>> 1985 impact on interrupt service overhead.
>> 1986
>> 1987 config MIPS_MT_SMTC_IRQAFF
>> 1988 bool "Support IRQ affinity API"
>> 1989 depends on MIPS_MT_SMTC
>> 1990 default n
1923 help 1991 help
1924 TSX is always enabled on TSX capabl !! 1992 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1925 line parameter. !! 1993 for SMTC Linux kernel. Requires platform support, of which
1926 !! 1994 an example can be found in the MIPS kernel i8259 and Malta
1927 config X86_INTEL_TSX_MODE_AUTO !! 1995 platform code. Adds some overhead to interrupt dispatch, and
1928 bool "auto" !! 1996 should be used only if you know what you are doing.
>> 1997
>> 1998 config MIPS_VPE_LOADER_TOM
>> 1999 bool "Load VPE program into memory hidden from linux"
>> 2000 depends on MIPS_VPE_LOADER
>> 2001 default y
>> 2002 help
>> 2003 The loader can use memory that is present but has been hidden from
>> 2004 Linux using the kernel command line option "mem=xxMB". It's up to
>> 2005 you to ensure the amount you put in the option and the space your
>> 2006 program requires is less or equal to the amount physically present.
>> 2007
>> 2008 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
>> 2009 config MIPS_VPE_APSP_API
>> 2010 bool "Enable support for AP/SP API (RTLX)"
>> 2011 depends on MIPS_VPE_LOADER
>> 2012 help
>> 2013
>> 2014 config MIPS_CMP
>> 2015 bool "MIPS CMP framework support"
>> 2016 depends on SYS_SUPPORTS_MIPS_CMP
>> 2017 select SYNC_R4K
>> 2018 select SYS_SUPPORTS_SMP
>> 2019 select SYS_SUPPORTS_SCHED_SMT if SMP
>> 2020 select WEAK_ORDERING
>> 2021 default n
1929 help 2022 help
1930 TSX is enabled on TSX capable HW th !! 2023 This is a placeholder option for the GCMP work. It will need to
1931 side channel attacks- equals the ts !! 2024 be handled differently...
1932 endchoice <<
1933 <<
1934 config X86_SGX <<
1935 bool "Software Guard eXtensions (SGX) <<
1936 depends on X86_64 && CPU_SUP_INTEL && <<
1937 depends on CRYPTO=y <<
1938 depends on CRYPTO_SHA256=y <<
1939 select MMU_NOTIFIER <<
1940 select NUMA_KEEP_MEMINFO if NUMA <<
1941 select XARRAY_MULTI <<
1942 help <<
1943 Intel(R) Software Guard eXtensions <<
1944 that can be used by applications to <<
1945 and data, referred to as enclaves. <<
1946 only be accessed by code running wi <<
1947 outside the enclave, including othe <<
1948 hardware. <<
1949 <<
1950 If unsure, say N. <<
1951 <<
1952 config X86_USER_SHADOW_STACK <<
1953 bool "X86 userspace shadow stack" <<
1954 depends on AS_WRUSS <<
1955 depends on X86_64 <<
1956 select ARCH_USES_HIGH_VMA_FLAGS <<
1957 select X86_CET <<
1958 help <<
1959 Shadow stack protection is a hardwa <<
1960 return address corruption. This he <<
1961 Applications must be enabled to use <<
1962 get protection "for free". <<
1963 2025
1964 CPUs supporting shadow stacks were !! 2026 config SB1_PASS_1_WORKAROUNDS
1965 !! 2027 bool
1966 See Documentation/arch/x86/shstk.rs !! 2028 depends on CPU_SB1_PASS_1
>> 2029 default y
1967 2030
1968 If unsure, say N. !! 2031 config SB1_PASS_2_WORKAROUNDS
>> 2032 bool
>> 2033 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
>> 2034 default y
1969 2035
1970 config INTEL_TDX_HOST !! 2036 config SB1_PASS_2_1_WORKAROUNDS
1971 bool "Intel Trust Domain Extensions ( !! 2037 bool
1972 depends on CPU_SUP_INTEL !! 2038 depends on CPU_SB1 && CPU_SB1_PASS_2
1973 depends on X86_64 !! 2039 default y
1974 depends on KVM_INTEL <<
1975 depends on X86_X2APIC <<
1976 select ARCH_KEEP_MEMBLOCK <<
1977 depends on CONTIG_ALLOC <<
1978 depends on !KEXEC_CORE <<
1979 depends on X86_MCE <<
1980 help <<
1981 Intel Trust Domain Extensions (TDX) <<
1982 host and certain physical attacks. <<
1983 support in the host kernel to run c <<
1984 2040
1985 If unsure, say N. <<
1986 2041
1987 config EFI !! 2042 config 64BIT_PHYS_ADDR
1988 bool "EFI runtime service support" !! 2043 bool
1989 depends on ACPI <<
1990 select UCS2_STRING <<
1991 select EFI_RUNTIME_WRAPPERS <<
1992 select ARCH_USE_MEMREMAP_PROT <<
1993 select EFI_RUNTIME_MAP if KEXEC_CORE <<
1994 help <<
1995 This enables the kernel to use EFI <<
1996 available (such as the EFI variable <<
1997 <<
1998 This option is only useful on syste <<
1999 In addition, you should use the lat <<
2000 at <http://elilo.sourceforge.net> i <<
2001 of EFI runtime services. However, e <<
2002 resultant kernel should continue to <<
2003 platforms. <<
2004 <<
2005 config EFI_STUB <<
2006 bool "EFI stub support" <<
2007 depends on EFI <<
2008 select RELOCATABLE <<
2009 help <<
2010 This kernel feature allows a bzImag <<
2011 by EFI firmware without the use of <<
2012 <<
2013 See Documentation/admin-guide/efi-s <<
2014 <<
2015 config EFI_HANDOVER_PROTOCOL <<
2016 bool "EFI handover protocol (DEPRECAT <<
2017 depends on EFI_STUB <<
2018 default y <<
2019 help <<
2020 Select this in order to include sup <<
2021 handover protocol, which defines al <<
2022 EFI stub. This is a practice that <<
2023 specification, and requires a prior <<
2024 bootloader about Linux/x86 specific <<
2025 and initrd, and where in memory tho <<
2026 <<
2027 If in doubt, say Y. Even though the <<
2028 present in upstream GRUB or other b <<
2029 GRUB with numerous downstream patch <<
2030 handover protocol as as result. <<
2031 <<
2032 config EFI_MIXED <<
2033 bool "EFI mixed-mode support" <<
2034 depends on EFI_STUB && X86_64 <<
2035 help <<
2036 Enabling this feature allows a 64-b <<
2037 on a 32-bit firmware, provided that <<
2038 mode. <<
2039 <<
2040 Note that it is not possible to boo <<
2041 kernel via the EFI boot stub - a bo <<
2042 the EFI handover protocol must be u <<
2043 2044
2044 If unsure, say N. !! 2045 config ARCH_PHYS_ADDR_T_64BIT
>> 2046 def_bool 64BIT_PHYS_ADDR
2045 2047
2046 config EFI_RUNTIME_MAP !! 2048 config CPU_HAS_SMARTMIPS
2047 bool "Export EFI runtime maps to sysf !! 2049 depends on SYS_SUPPORTS_SMARTMIPS
2048 depends on EFI !! 2050 bool "Support for the SmartMIPS ASE"
>> 2051 help
>> 2052 SmartMIPS is a extension of the MIPS32 architecture aimed at
>> 2053 increased security at both hardware and software level for
>> 2054 smartcards. Enabling this option will allow proper use of the
>> 2055 SmartMIPS instructions by Linux applications. However a kernel with
>> 2056 this option will not work on a MIPS core without SmartMIPS core. If
>> 2057 you don't know you probably don't have SmartMIPS and should say N
>> 2058 here.
>> 2059
>> 2060 config CPU_MICROMIPS
>> 2061 depends on SYS_SUPPORTS_MICROMIPS
>> 2062 bool "Build kernel using microMIPS ISA"
2049 help 2063 help
2050 Export EFI runtime memory regions t !! 2064 When this option is enabled the kernel will be built using the
2051 That memory map is required by the !! 2065 microMIPS ISA
2052 mappings after kexec, but can also <<
2053 <<
2054 See also Documentation/ABI/testing/ <<
2055 2066
2056 source "kernel/Kconfig.hz" !! 2067 config CPU_HAS_WB
2057 !! 2068 bool
2058 config ARCH_SUPPORTS_KEXEC <<
2059 def_bool y <<
2060 <<
2061 config ARCH_SUPPORTS_KEXEC_FILE <<
2062 def_bool X86_64 <<
2063 <<
2064 config ARCH_SELECTS_KEXEC_FILE <<
2065 def_bool y <<
2066 depends on KEXEC_FILE <<
2067 select HAVE_IMA_KEXEC if IMA <<
2068 <<
2069 config ARCH_SUPPORTS_KEXEC_PURGATORY <<
2070 def_bool y <<
2071 <<
2072 config ARCH_SUPPORTS_KEXEC_SIG <<
2073 def_bool y <<
2074 <<
2075 config ARCH_SUPPORTS_KEXEC_SIG_FORCE <<
2076 def_bool y <<
2077 <<
2078 config ARCH_SUPPORTS_KEXEC_BZIMAGE_VERIFY_SIG <<
2079 def_bool y <<
2080 2069
2081 config ARCH_SUPPORTS_KEXEC_JUMP !! 2070 config XKS01
2082 def_bool y !! 2071 bool
2083 2072
2084 config ARCH_SUPPORTS_CRASH_DUMP !! 2073 #
2085 def_bool X86_64 || (X86_32 && HIGHMEM !! 2074 # Vectored interrupt mode is an R2 feature
>> 2075 #
>> 2076 config CPU_MIPSR2_IRQ_VI
>> 2077 bool
2086 2078
2087 config ARCH_SUPPORTS_CRASH_HOTPLUG !! 2079 #
2088 def_bool y !! 2080 # Extended interrupt mode is an R2 feature
>> 2081 #
>> 2082 config CPU_MIPSR2_IRQ_EI
>> 2083 bool
2089 2084
2090 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATI !! 2085 config CPU_HAS_SYNC
2091 def_bool CRASH_RESERVE !! 2086 bool
>> 2087 depends on !CPU_R3000
>> 2088 default y
2092 2089
2093 config PHYSICAL_START !! 2090 #
2094 hex "Physical address where the kerne !! 2091 # CPU non-features
2095 default "0x1000000" !! 2092 #
2096 help !! 2093 config CPU_DADDI_WORKAROUNDS
2097 This gives the physical address whe !! 2094 bool
2098 2095
2099 If the kernel is not relocatable (C !! 2096 config CPU_R4000_WORKAROUNDS
2100 will decompress itself to above phy !! 2097 bool
2101 Otherwise, bzImage will run from th !! 2098 select CPU_R4400_WORKAROUNDS
2102 by the boot loader. The only except <<
2103 above physical address, in which ca <<
2104 <<
2105 In normal kdump cases one does not <<
2106 as now bzImage can be compiled as a <<
2107 (CONFIG_RELOCATABLE=y) and be used <<
2108 address. This option is mainly usef <<
2109 to use a bzImage for capturing the <<
2110 vmlinux instead. vmlinux is not rel <<
2111 to be specifically compiled to run <<
2112 (normally a reserved region) and th <<
2113 <<
2114 So if you are using bzImage for cap <<
2115 leave the value here unchanged to 0 <<
2116 CONFIG_RELOCATABLE=y. Otherwise if <<
2117 for capturing the crash dump change <<
2118 the reserved region. In other word <<
2119 the "X" value as specified in the " <<
2120 command line boot parameter passed <<
2121 kernel. Please take a look at Docum <<
2122 for more details about crash dumps. <<
2123 <<
2124 Usage of bzImage for capturing the <<
2125 one does not have to build two kern <<
2126 as production kernel and capture ke <<
2127 gone away after relocatable bzImage <<
2128 is present because there are users <<
2129 vmlinux for dump capture. This opti <<
2130 line. <<
2131 <<
2132 Don't change this unless you know w <<
2133 <<
2134 config RELOCATABLE <<
2135 bool "Build a relocatable kernel" <<
2136 default y <<
2137 help <<
2138 This builds a kernel image that ret <<
2139 so it can be loaded someplace besid <<
2140 The relocations tend to make the ke <<
2141 but are discarded at runtime. <<
2142 <<
2143 One use is for the kexec on panic c <<
2144 must live at a different physical a <<
2145 kernel. <<
2146 <<
2147 Note: If CONFIG_RELOCATABLE=y, then <<
2148 it has been loaded at and the compi <<
2149 (CONFIG_PHYSICAL_START) is used as <<
2150 <<
2151 config RANDOMIZE_BASE <<
2152 bool "Randomize the address of the ke <<
2153 depends on RELOCATABLE <<
2154 default y <<
2155 help <<
2156 In support of Kernel Address Space <<
2157 this randomizes the physical addres <<
2158 is decompressed and the virtual add <<
2159 image is mapped, as a security feat <<
2160 attempts relying on knowledge of th <<
2161 code internals. <<
2162 <<
2163 On 64-bit, the kernel physical and <<
2164 randomized separately. The physical <<
2165 between 16MB and the top of physica <<
2166 virtual address will be randomized <<
2167 of entropy). Note that this also re <<
2168 available to kernel modules from 1. <<
2169 <<
2170 On 32-bit, the kernel physical and <<
2171 randomized together. They will be r <<
2172 512MB (8 bits of entropy). <<
2173 <<
2174 Entropy is generated using the RDRA <<
2175 supported. If RDTSC is supported, i <<
2176 the entropy pool as well. If neithe <<
2177 supported, then entropy is read fro <<
2178 usable entropy is limited by the ke <<
2179 2GB addressing, and that PHYSICAL_A <<
2180 minimum of 2MB. As a result, only 1 <<
2181 theoretically possible, but the imp <<
2182 limited due to memory layouts. <<
2183 2099
2184 If unsure, say Y. !! 2100 config CPU_R4400_WORKAROUNDS
>> 2101 bool
2185 2102
2186 # Relocation on x86 needs some additional bui !! 2103 #
2187 config X86_NEED_RELOCS !! 2104 # - Highmem only makes sense for the 32-bit kernel.
2188 def_bool y !! 2105 # - The current highmem code will only work properly on physically indexed
2189 depends on RANDOMIZE_BASE || (X86_32 !! 2106 # caches such as R3000, SB1, R7000 or those that look like they're virtually
>> 2107 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
>> 2108 # moment we protect the user and offer the highmem option only on machines
>> 2109 # where it's known to be safe. This will not offer highmem on a few systems
>> 2110 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
>> 2111 # indexed CPUs but we're playing safe.
>> 2112 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
>> 2113 # know they might have memory configurations that could make use of highmem
>> 2114 # support.
>> 2115 #
>> 2116 config HIGHMEM
>> 2117 bool "High Memory Support"
>> 2118 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2190 2119
2191 config PHYSICAL_ALIGN !! 2120 config CPU_SUPPORTS_HIGHMEM
2192 hex "Alignment value to which kernel !! 2121 bool
2193 default "0x200000" <<
2194 range 0x2000 0x1000000 if X86_32 <<
2195 range 0x200000 0x1000000 if X86_64 <<
2196 help <<
2197 This value puts the alignment restr <<
2198 where kernel is loaded and run from <<
2199 address which meets above alignment <<
2200 <<
2201 If bootloader loads the kernel at a <<
2202 CONFIG_RELOCATABLE is set, kernel w <<
2203 address aligned to above value and <<
2204 <<
2205 If bootloader loads the kernel at a <<
2206 CONFIG_RELOCATABLE is not set, kern <<
2207 load address and decompress itself <<
2208 compiled for and run from there. Th <<
2209 compiled already meets above alignm <<
2210 end result is that kernel runs from <<
2211 above alignment restrictions. <<
2212 <<
2213 On 32-bit this value must be a mult <<
2214 this value must be a multiple of 0x <<
2215 <<
2216 Don't change this unless you know w <<
2217 <<
2218 config DYNAMIC_MEMORY_LAYOUT <<
2219 bool <<
2220 help <<
2221 This option makes base addresses of <<
2222 __PAGE_OFFSET movable during boot. <<
2223 <<
2224 config RANDOMIZE_MEMORY <<
2225 bool "Randomize the kernel memory sec <<
2226 depends on X86_64 <<
2227 depends on RANDOMIZE_BASE <<
2228 select DYNAMIC_MEMORY_LAYOUT <<
2229 default RANDOMIZE_BASE <<
2230 help <<
2231 Randomizes the base virtual address <<
2232 (physical memory mapping, vmalloc & <<
2233 makes exploits relying on predictab <<
2234 <<
2235 The order of allocations remains un <<
2236 the same way as RANDOMIZE_BASE. Cur <<
2237 configuration have in average 30,00 <<
2238 addresses for each memory section. <<
2239 2122
2240 If unsure, say Y. !! 2123 config SYS_SUPPORTS_HIGHMEM
>> 2124 bool
2241 2125
2242 config RANDOMIZE_MEMORY_PHYSICAL_PADDING !! 2126 config SYS_SUPPORTS_SMARTMIPS
2243 hex "Physical memory mapping padding" !! 2127 bool
2244 depends on RANDOMIZE_MEMORY <<
2245 default "0xa" if MEMORY_HOTPLUG <<
2246 default "0x0" <<
2247 range 0x1 0x40 if MEMORY_HOTPLUG <<
2248 range 0x0 0x40 <<
2249 help <<
2250 Define the padding in terabytes add <<
2251 memory size during kernel memory ra <<
2252 for memory hotplug support but redu <<
2253 address randomization. <<
2254 <<
2255 If unsure, leave at the default val <<
2256 <<
2257 config ADDRESS_MASKING <<
2258 bool "Linear Address Masking support" <<
2259 depends on X86_64 <<
2260 depends on COMPILE_TEST || !CPU_MITIG <<
2261 help <<
2262 Linear Address Masking (LAM) modifi <<
2263 to 64-bit linear addresses, allowin <<
2264 untranslated address bits for metad <<
2265 2128
2266 The capability can be used for effi !! 2129 config SYS_SUPPORTS_MICROMIPS
2267 implementation and for optimization !! 2130 bool
2268 2131
2269 config HOTPLUG_CPU !! 2132 config ARCH_FLATMEM_ENABLE
2270 def_bool y 2133 def_bool y
2271 depends on SMP !! 2134 depends on !NUMA && !CPU_LOONGSON2
2272 2135
2273 config COMPAT_VDSO !! 2136 config ARCH_DISCONTIGMEM_ENABLE
2274 def_bool n !! 2137 bool
2275 prompt "Disable the 32-bit vDSO (need !! 2138 default y if SGI_IP27
2276 depends on COMPAT_32 <<
2277 help <<
2278 Certain buggy versions of glibc wil <<
2279 presented with a 32-bit vDSO that i <<
2280 indicated in its segment table. <<
2281 <<
2282 The bug was introduced by f866314b8 <<
2283 and fixed by 3b3ddb4f7db98ec9e912cc <<
2284 49ad572a70b8aeb91e57483a11dd1b77e31 <<
2285 the only released version with the <<
2286 contains a buggy "glibc 2.3.2". <<
2287 <<
2288 The symptom of the bug is that ever <<
2289 dl_main: Assertion `(void *) ph->p_ <<
2290 <<
2291 Saying Y here changes the default v <<
2292 option from 1 to 0, which turns off <<
2293 This works around the glibc bug but <<
2294 <<
2295 If unsure, say N: if you are compil <<
2296 are unlikely to be using a buggy ve <<
2297 <<
2298 choice <<
2299 prompt "vsyscall table for legacy app <<
2300 depends on X86_64 <<
2301 default LEGACY_VSYSCALL_XONLY <<
2302 help <<
2303 Legacy user code that does not know <<
2304 to be able to issue three syscalls <<
2305 kernel space. Since this location i <<
2306 it can be used to assist security v <<
2307 <<
2308 This setting can be changed at boot <<
2309 line parameter vsyscall=[emulate|xo <<
2310 is deprecated and can only be enabl <<
2311 line. <<
2312 <<
2313 On a system with recent enough glib <<
2314 static binaries, you can say None w <<
2315 to improve security. <<
2316 <<
2317 If unsure, select "Emulate executio <<
2318 <<
2319 config LEGACY_VSYSCALL_XONLY <<
2320 bool "Emulate execution only" <<
2321 help <<
2322 The kernel traps and emulat <<
2323 address mapping and does no <<
2324 configuration is recommende <<
2325 legacy vsyscall area but su <<
2326 instrumentation of legacy c <<
2327 certain uses of the vsyscal <<
2328 buffer. <<
2329 <<
2330 config LEGACY_VSYSCALL_NONE <<
2331 bool "None" <<
2332 help <<
2333 There will be no vsyscall m <<
2334 eliminate any risk of ASLR <<
2335 fixed address mapping. Atte <<
2336 will be reported to dmesg, <<
2337 malicious userspace program <<
2338 <<
2339 endchoice <<
2340 <<
2341 config CMDLINE_BOOL <<
2342 bool "Built-in kernel command line" <<
2343 help 2139 help
2344 Allow for specifying boot arguments !! 2140 Say Y to support efficient handling of discontiguous physical memory,
2345 build time. On some systems (e.g. !! 2141 for architectures which are either NUMA (Non-Uniform Memory Access)
2346 necessary or convenient to provide !! 2142 or have huge holes in the physical address space for other reasons.
2347 kernel boot arguments with the kern !! 2143 See <file:Documentation/vm/numa> for more.
2348 to not rely on the boot loader to p <<
2349 2144
2350 To compile command line arguments i !! 2145 config ARCH_SPARSEMEM_ENABLE
2351 set this option to 'Y', then fill i !! 2146 bool
2352 boot arguments in CONFIG_CMDLINE. !! 2147 select SPARSEMEM_STATIC
2353 <<
2354 Systems with fully functional boot <<
2355 should leave this option set to 'N' <<
2356 2148
2357 config CMDLINE !! 2149 config NUMA
2358 string "Built-in kernel command strin !! 2150 bool "NUMA Support"
2359 depends on CMDLINE_BOOL !! 2151 depends on SYS_SUPPORTS_NUMA
2360 default "" <<
2361 help 2152 help
2362 Enter arguments here that should be !! 2153 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2363 image and used at boot time. If th !! 2154 Access). This option improves performance on systems with more
2364 command line at boot time, it is ap !! 2155 than two nodes; on two node systems it is generally better to
2365 form the full kernel command line, !! 2156 leave it disabled; on single node systems disable this option
2366 !! 2157 disabled.
2367 However, you can use the CONFIG_CMD <<
2368 change this behavior. <<
2369 2158
2370 In most cases, the command line (wh !! 2159 config SYS_SUPPORTS_NUMA
2371 by the boot loader) should specify !! 2160 bool
2372 file system. <<
2373 <<
2374 config CMDLINE_OVERRIDE <<
2375 bool "Built-in command line overrides <<
2376 depends on CMDLINE_BOOL && CMDLINE != <<
2377 help <<
2378 Set this option to 'Y' to have the <<
2379 command line, and use ONLY the buil <<
2380 2161
2381 This is used to work around broken !! 2162 config NODES_SHIFT
2382 be set to 'N' under normal conditio !! 2163 int
>> 2164 default "6"
>> 2165 depends on NEED_MULTIPLE_NODES
2383 2166
2384 config MODIFY_LDT_SYSCALL !! 2167 config HW_PERF_EVENTS
2385 bool "Enable the LDT (local descripto !! 2168 bool "Enable hardware performance counter support for perf events"
>> 2169 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2386 default y 2170 default y
2387 help 2171 help
2388 Linux can allow user programs to in !! 2172 Enable hardware performance counter support for perf events. If
2389 Local Descriptor Table (LDT) using !! 2173 disabled, perf events will use software events only.
2390 call. This is required to run 16-b <<
2391 DOSEMU or some Wine programs. It i <<
2392 threading libraries. <<
2393 <<
2394 Enabling this feature adds a small <<
2395 context switches and increases the <<
2396 surface. Disabling it removes the <<
2397 <<
2398 Saying 'N' here may make sense for <<
2399 <<
2400 config STRICT_SIGALTSTACK_SIZE <<
2401 bool "Enforce strict size checking fo <<
2402 depends on DYNAMIC_SIGFRAME <<
2403 help <<
2404 For historical reasons MINSIGSTKSZ <<
2405 already too small with AVX512 suppo <<
2406 enforce strict checking of the siga <<
2407 real size of the FPU frame. This op <<
2408 by default. It can also be controll <<
2409 line option 'strict_sas_size' indep <<
2410 switch. Enabling it might break exi <<
2411 allocate a too small sigaltstack bu <<
2412 never get a signal delivered. <<
2413 2174
2414 Say 'N' unless you want to really e !! 2175 source "mm/Kconfig"
2415 2176
2416 config CFI_AUTO_DEFAULT !! 2177 config SMP
2417 bool "Attempt to use FineIBT by defau !! 2178 bool "Multi-Processing support"
2418 depends on FINEIBT !! 2179 depends on SYS_SUPPORTS_SMP
2419 default y !! 2180 select USE_GENERIC_SMP_HELPERS
2420 help 2181 help
2421 Attempt to use FineIBT by default a !! 2182 This enables support for systems with more than one CPU. If you have
2422 this is the same as booting with "c !! 2183 a system with only one CPU, like most personal computers, say N. If
2423 this is the same as booting with "c !! 2184 you have a system with more than one CPU, say Y.
2424 2185
2425 source "kernel/livepatch/Kconfig" !! 2186 If you say N here, the kernel will run on single and multiprocessor
>> 2187 machines, but will use only one CPU of a multiprocessor machine. If
>> 2188 you say Y here, the kernel will run on many, but not all,
>> 2189 singleprocessor machines. On a singleprocessor machine, the kernel
>> 2190 will run faster if you say N here.
2426 2191
2427 endmenu !! 2192 People using multiprocessor machines who say Y here should also say
>> 2193 Y to "Enhanced Real Time Clock Support", below.
2428 2194
2429 config CC_HAS_NAMED_AS !! 2195 See also the SMP-HOWTO available at
2430 def_bool $(success,echo 'int __seg_fs !! 2196 <http://www.tldp.org/docs.html#howto>.
2431 depends on CC_IS_GCC <<
2432 2197
2433 config CC_HAS_NAMED_AS_FIXED_SANITIZERS !! 2198 If you don't know what to do here, say N.
2434 def_bool CC_IS_GCC && GCC_VERSION >= <<
2435 2199
2436 config USE_X86_SEG_SUPPORT !! 2200 config SMP_UP
2437 def_bool y !! 2201 bool
2438 depends on CC_HAS_NAMED_AS <<
2439 # <<
2440 # -fsanitize=kernel-address (KASAN) a <<
2441 # (KCSAN) are incompatible with named <<
2442 # GCC < 13.3 - see GCC PR sanitizer/1 <<
2443 # <<
2444 depends on !(KASAN || KCSAN) || CC_HA <<
2445 2202
2446 config CC_HAS_SLS !! 2203 config SYS_SUPPORTS_MIPS_CMP
2447 def_bool $(cc-option,-mharden-sls=all !! 2204 bool
2448 2205
2449 config CC_HAS_RETURN_THUNK !! 2206 config SYS_SUPPORTS_SMP
2450 def_bool $(cc-option,-mfunction-retur !! 2207 bool
2451 2208
2452 config CC_HAS_ENTRY_PADDING !! 2209 config NR_CPUS_DEFAULT_1
2453 def_bool $(cc-option,-fpatchable-func !! 2210 bool
2454 2211
2455 config FUNCTION_PADDING_CFI !! 2212 config NR_CPUS_DEFAULT_2
2456 int !! 2213 bool
2457 default 59 if FUNCTION_ALIGNMENT_64B <<
2458 default 27 if FUNCTION_ALIGNMENT_32B <<
2459 default 11 if FUNCTION_ALIGNMENT_16B <<
2460 default 3 if FUNCTION_ALIGNMENT_8B <<
2461 default 0 <<
2462 <<
2463 # Basically: FUNCTION_ALIGNMENT - 5*CFI_CLANG <<
2464 # except Kconfig can't do arithmetic :/ <<
2465 config FUNCTION_PADDING_BYTES <<
2466 int <<
2467 default FUNCTION_PADDING_CFI if CFI_C <<
2468 default FUNCTION_ALIGNMENT <<
2469 2214
2470 config CALL_PADDING !! 2215 config NR_CPUS_DEFAULT_4
2471 def_bool n !! 2216 bool
2472 depends on CC_HAS_ENTRY_PADDING && OB <<
2473 select FUNCTION_ALIGNMENT_16B <<
2474 2217
2475 config FINEIBT !! 2218 config NR_CPUS_DEFAULT_8
2476 def_bool y !! 2219 bool
2477 depends on X86_KERNEL_IBT && CFI_CLAN <<
2478 select CALL_PADDING <<
2479 2220
2480 config HAVE_CALL_THUNKS !! 2221 config NR_CPUS_DEFAULT_16
2481 def_bool y !! 2222 bool
2482 depends on CC_HAS_ENTRY_PADDING && MI <<
2483 2223
2484 config CALL_THUNKS !! 2224 config NR_CPUS_DEFAULT_32
2485 def_bool n !! 2225 bool
2486 select CALL_PADDING <<
2487 2226
2488 config PREFIX_SYMBOLS !! 2227 config NR_CPUS_DEFAULT_64
2489 def_bool y !! 2228 bool
2490 depends on CALL_PADDING && !CFI_CLANG <<
2491 2229
2492 menuconfig CPU_MITIGATIONS !! 2230 config NR_CPUS
2493 bool "Mitigations for CPU vulnerabili !! 2231 int "Maximum number of CPUs (2-64)"
2494 default y !! 2232 range 1 64 if NR_CPUS_DEFAULT_1
>> 2233 depends on SMP
>> 2234 default "1" if NR_CPUS_DEFAULT_1
>> 2235 default "2" if NR_CPUS_DEFAULT_2
>> 2236 default "4" if NR_CPUS_DEFAULT_4
>> 2237 default "8" if NR_CPUS_DEFAULT_8
>> 2238 default "16" if NR_CPUS_DEFAULT_16
>> 2239 default "32" if NR_CPUS_DEFAULT_32
>> 2240 default "64" if NR_CPUS_DEFAULT_64
2495 help 2241 help
2496 Say Y here to enable options which !! 2242 This allows you to specify the maximum number of CPUs which this
2497 vulnerabilities (usually related to !! 2243 kernel will support. The maximum supported value is 32 for 32-bit
2498 Mitigations can be disabled or rest !! 2244 kernel and 64 for 64-bit kernels; the minimum value which makes
2499 via the "mitigations" kernel parame !! 2245 sense is 1 for Qemu (useful only for kernel debugging purposes)
2500 !! 2246 and 2 for all others.
2501 If you say N, all mitigations will !! 2247
2502 overridden at runtime. !! 2248 This is purely to save memory - each supported CPU adds
>> 2249 approximately eight kilobytes to the kernel image. For best
>> 2250 performance should round up your number of processors to the next
>> 2251 power of two.
2503 2252
2504 Say 'Y', unless you really know wha !! 2253 config MIPS_PERF_SHARED_TC_COUNTERS
>> 2254 bool
2505 2255
2506 if CPU_MITIGATIONS !! 2256 #
>> 2257 # Timer Interrupt Frequency Configuration
>> 2258 #
2507 2259
2508 config MITIGATION_PAGE_TABLE_ISOLATION !! 2260 choice
2509 bool "Remove the kernel mapping in us !! 2261 prompt "Timer frequency"
2510 default y !! 2262 default HZ_250
2511 depends on (X86_64 || X86_PAE) <<
2512 help 2263 help
2513 This feature reduces the number of !! 2264 Allows the configuration of the timer frequency.
2514 ensuring that the majority of kerne <<
2515 into userspace. <<
2516 2265
2517 See Documentation/arch/x86/pti.rst !! 2266 config HZ_48
>> 2267 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2518 2268
2519 config MITIGATION_RETPOLINE !! 2269 config HZ_100
2520 bool "Avoid speculative indirect bran !! 2270 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2521 select OBJTOOL if HAVE_OBJTOOL <<
2522 default y <<
2523 help <<
2524 Compile kernel with the retpoline c <<
2525 kernel-to-user data leaks by avoidi <<
2526 branches. Requires a compiler with <<
2527 support for full protection. The ke <<
2528 2271
2529 config MITIGATION_RETHUNK !! 2272 config HZ_128
2530 bool "Enable return-thunks" !! 2273 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2531 depends on MITIGATION_RETPOLINE && CC <<
2532 select OBJTOOL if HAVE_OBJTOOL <<
2533 default y if X86_64 <<
2534 help <<
2535 Compile the kernel with the return- <<
2536 against kernel-to-user data leaks b <<
2537 Requires a compiler with -mfunction <<
2538 support for full protection. The ke <<
2539 2274
2540 config MITIGATION_UNRET_ENTRY !! 2275 config HZ_250
2541 bool "Enable UNRET on kernel entry" !! 2276 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2542 depends on CPU_SUP_AMD && MITIGATION_ <<
2543 default y <<
2544 help <<
2545 Compile the kernel with support for <<
2546 2277
2547 config MITIGATION_CALL_DEPTH_TRACKING !! 2278 config HZ_256
2548 bool "Mitigate RSB underflow with cal !! 2279 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2549 depends on CPU_SUP_INTEL && HAVE_CALL <<
2550 select HAVE_DYNAMIC_FTRACE_NO_PATCHAB <<
2551 select CALL_THUNKS <<
2552 default y <<
2553 help <<
2554 Compile the kernel with call depth <<
2555 SKL Return-Speculation-Buffer (RSB) <<
2556 mitigation is off by default and ne <<
2557 kernel command line via the retblee <<
2558 non-affected systems the overhead o <<
2559 the call depth tracking is using ru <<
2560 in a compiler generated padding are <<
2561 increases text size by ~5%. For non <<
2562 is unused. On affected SKL systems <<
2563 performance gain over the IBRS miti <<
2564 2280
2565 config CALL_THUNKS_DEBUG !! 2281 config HZ_1000
2566 bool "Enable call thunks and call dep !! 2282 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2567 depends on MITIGATION_CALL_DEPTH_TRAC <<
2568 select FUNCTION_ALIGNMENT_32B <<
2569 default n <<
2570 help <<
2571 Enable call/ret counters for imbala <<
2572 a noisy dmesg about callthunks gene <<
2573 trouble shooting. The debug prints <<
2574 kernel command line with 'debug-cal <<
2575 Only enable this when you are debug <<
2576 creates a noticeable runtime overhe <<
2577 2283
2578 config MITIGATION_IBPB_ENTRY !! 2284 config HZ_1024
2579 bool "Enable IBPB on kernel entry" !! 2285 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2580 depends on CPU_SUP_AMD && X86_64 <<
2581 default y <<
2582 help <<
2583 Compile the kernel with support for <<
2584 2286
2585 config MITIGATION_IBRS_ENTRY !! 2287 endchoice
2586 bool "Enable IBRS on kernel entry" <<
2587 depends on CPU_SUP_INTEL && X86_64 <<
2588 default y <<
2589 help <<
2590 Compile the kernel with support for <<
2591 This mitigates both spectre_v2 and <<
2592 performance. <<
2593 2288
2594 config MITIGATION_SRSO !! 2289 config SYS_SUPPORTS_48HZ
2595 bool "Mitigate speculative RAS overfl !! 2290 bool
2596 depends on CPU_SUP_AMD && X86_64 && M <<
2597 default y <<
2598 help <<
2599 Enable the SRSO mitigation needed o <<
2600 2291
2601 config MITIGATION_SLS !! 2292 config SYS_SUPPORTS_100HZ
2602 bool "Mitigate Straight-Line-Speculat !! 2293 bool
2603 depends on CC_HAS_SLS && X86_64 <<
2604 select OBJTOOL if HAVE_OBJTOOL <<
2605 default n <<
2606 help <<
2607 Compile the kernel with straight-li <<
2608 against straight line speculation. <<
2609 larger. <<
2610 2294
2611 config MITIGATION_GDS !! 2295 config SYS_SUPPORTS_128HZ
2612 bool "Mitigate Gather Data Sampling" !! 2296 bool
2613 depends on CPU_SUP_INTEL <<
2614 default y <<
2615 help <<
2616 Enable mitigation for Gather Data S <<
2617 vulnerability which allows unprivil <<
2618 which was previously stored in vect <<
2619 instructions to infer the stale vec <<
2620 2297
2621 config MITIGATION_RFDS !! 2298 config SYS_SUPPORTS_250HZ
2622 bool "RFDS Mitigation" !! 2299 bool
2623 depends on CPU_SUP_INTEL <<
2624 default y <<
2625 help <<
2626 Enable mitigation for Register File <<
2627 RFDS is a hardware vulnerability wh <<
2628 allows unprivileged speculative acc <<
2629 stored in floating point, vector an <<
2630 See also <file:Documentation/admin- <<
2631 2300
2632 config MITIGATION_SPECTRE_BHI !! 2301 config SYS_SUPPORTS_256HZ
2633 bool "Mitigate Spectre-BHB (Branch Hi !! 2302 bool
2634 depends on CPU_SUP_INTEL <<
2635 default y <<
2636 help <<
2637 Enable BHI mitigations. BHI attacks <<
2638 where the branch history buffer is <<
2639 indirect branches. <<
2640 See <file:Documentation/admin-guide <<
2641 2303
2642 config MITIGATION_MDS !! 2304 config SYS_SUPPORTS_1000HZ
2643 bool "Mitigate Microarchitectural Dat !! 2305 bool
2644 depends on CPU_SUP_INTEL <<
2645 default y <<
2646 help <<
2647 Enable mitigation for Microarchitec <<
2648 a hardware vulnerability which allo <<
2649 to data which is available in vario <<
2650 See also <file:Documentation/admin- <<
2651 2306
2652 config MITIGATION_TAA !! 2307 config SYS_SUPPORTS_1024HZ
2653 bool "Mitigate TSX Asynchronous Abort !! 2308 bool
2654 depends on CPU_SUP_INTEL <<
2655 default y <<
2656 help <<
2657 Enable mitigation for TSX Asynchron <<
2658 vulnerability that allows unprivile <<
2659 which is available in various CPU i <<
2660 asynchronous aborts within an Intel <<
2661 See also <file:Documentation/admin- <<
2662 2309
2663 config MITIGATION_MMIO_STALE_DATA !! 2310 config SYS_SUPPORTS_ARBIT_HZ
2664 bool "Mitigate MMIO Stale Data hardwa !! 2311 bool
2665 depends on CPU_SUP_INTEL !! 2312 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2666 default y !! 2313 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2667 help !! 2314 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2668 Enable mitigation for MMIO Stale Da !! 2315 !SYS_SUPPORTS_1024HZ
2669 Stale Data Vulnerabilities are a cl <<
2670 vulnerabilities that can expose dat <<
2671 attacker to have access to MMIO. <<
2672 See also <<
2673 <file:Documentation/admin-guide/hw- <<
2674 2316
2675 config MITIGATION_L1TF !! 2317 config HZ
2676 bool "Mitigate L1 Terminal Fault (L1T !! 2318 int
2677 depends on CPU_SUP_INTEL !! 2319 default 48 if HZ_48
2678 default y !! 2320 default 100 if HZ_100
2679 help !! 2321 default 128 if HZ_128
2680 Mitigate L1 Terminal Fault (L1TF) h !! 2322 default 250 if HZ_250
2681 hardware vulnerability which allows !! 2323 default 256 if HZ_256
2682 available in the Level 1 Data Cache !! 2324 default 1000 if HZ_1000
2683 See <file:Documentation/admin-guide !! 2325 default 1024 if HZ_1024
>> 2326
>> 2327 source "kernel/Kconfig.preempt"
>> 2328
>> 2329 config KEXEC
>> 2330 bool "Kexec system call"
>> 2331 help
>> 2332 kexec is a system call that implements the ability to shutdown your
>> 2333 current kernel, and to start another kernel. It is like a reboot
>> 2334 but it is independent of the system firmware. And like a reboot
>> 2335 you can start any kernel with it, not just Linux.
>> 2336
>> 2337 The name comes from the similarity to the exec system call.
>> 2338
>> 2339 It is an ongoing process to be certain the hardware in a machine
>> 2340 is properly shutdown, so do not be surprised if this code does not
>> 2341 initially work for you. It may help to enable device hotplugging
>> 2342 support. As of this writing the exact hardware interface is
>> 2343 strongly in flux, so no good recommendation can be made.
>> 2344
>> 2345 config CRASH_DUMP
>> 2346 bool "Kernel crash dumps"
>> 2347 help
>> 2348 Generate crash dump after being started by kexec.
>> 2349 This should be normally only set in special crash dump kernels
>> 2350 which are loaded in the main kernel with kexec-tools into
>> 2351 a specially reserved region and then later executed after
>> 2352 a crash by kdump/kexec. The crash dump kernel must be compiled
>> 2353 to a memory address not used by the main kernel or firmware using
>> 2354 PHYSICAL_START.
2684 2355
2685 config MITIGATION_RETBLEED !! 2356 config PHYSICAL_START
2686 bool "Mitigate RETBleed hardware bug" !! 2357 hex "Physical address where the kernel is loaded"
2687 depends on (CPU_SUP_INTEL && MITIGATI !! 2358 default "0xffffffff84000000" if 64BIT
2688 default y !! 2359 default "0x84000000" if 32BIT
2689 help !! 2360 depends on CRASH_DUMP
2690 Enable mitigation for RETBleed (Arb !! 2361 help
2691 with Return Instructions) vulnerabi !! 2362 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2692 execution attack which takes advant !! 2363 If you plan to use kernel for capturing the crash dump change
2693 in many modern microprocessors, sim !! 2364 this value to start of the reserved region (the "X" value as
2694 unprivileged attacker can use these !! 2365 specified in the "crashkernel=YM@XM" command line boot parameter
2695 memory security restrictions to gai !! 2366 passed to the panic-ed kernel).
2696 that would otherwise be inaccessibl !! 2367
>> 2368 config SECCOMP
>> 2369 bool "Enable seccomp to safely compute untrusted bytecode"
>> 2370 depends on PROC_FS
>> 2371 default y
>> 2372 help
>> 2373 This kernel feature is useful for number crunching applications
>> 2374 that may need to compute untrusted bytecode during their
>> 2375 execution. By using pipes or other transports made available to
>> 2376 the process as file descriptors supporting the read/write
>> 2377 syscalls, it's possible to isolate those applications in
>> 2378 their own address space using seccomp. Once seccomp is
>> 2379 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 2380 and the task is only allowed to execute a few safe syscalls
>> 2381 defined by each seccomp mode.
2697 2382
2698 config MITIGATION_SPECTRE_V1 !! 2383 If unsure, say Y. Only embedded should say N here.
2699 bool "Mitigate SPECTRE V1 hardware bu <<
2700 default y <<
2701 help <<
2702 Enable mitigation for Spectre V1 (B <<
2703 class of side channel attacks that <<
2704 execution that bypasses conditional <<
2705 memory access bounds check. <<
2706 See also <file:Documentation/admin- <<
2707 2384
2708 config MITIGATION_SPECTRE_V2 !! 2385 config USE_OF
2709 bool "Mitigate SPECTRE V2 hardware bu !! 2386 bool
2710 default y !! 2387 select OF
2711 help !! 2388 select OF_EARLY_FLATTREE
2712 Enable mitigation for Spectre V2 (B !! 2389 select IRQ_DOMAIN
2713 V2 is a class of side channel attac <<
2714 indirect branch predictors inside t <<
2715 attacks, the attacker can steer spe <<
2716 victim to gadget code by poisoning <<
2717 used for predicting indirect branch <<
2718 See also <file:Documentation/admin- <<
2719 2390
2720 config MITIGATION_SRBDS !! 2391 endmenu
2721 bool "Mitigate Special Register Buffe <<
2722 depends on CPU_SUP_INTEL <<
2723 default y <<
2724 help <<
2725 Enable mitigation for Special Regis <<
2726 SRBDS is a hardware vulnerability t <<
2727 Sampling (MDS) techniques to infer <<
2728 register accesses. An unprivileged <<
2729 from RDRAND and RDSEED executed on <<
2730 using MDS techniques. <<
2731 See also <<
2732 <file:Documentation/admin-guide/hw- <<
2733 2392
2734 config MITIGATION_SSB !! 2393 config LOCKDEP_SUPPORT
2735 bool "Mitigate Speculative Store Bypa !! 2394 bool
2736 default y 2395 default y
2737 help <<
2738 Enable mitigation for Speculative S <<
2739 hardware security vulnerability and <<
2740 of speculative execution in a simil <<
2741 security vulnerabilities. <<
2742 2396
2743 endif !! 2397 config STACKTRACE_SUPPORT
2744 !! 2398 bool
2745 config ARCH_HAS_ADD_PAGES !! 2399 default y
2746 def_bool y <<
2747 depends on ARCH_ENABLE_MEMORY_HOTPLUG <<
2748 <<
2749 menu "Power management and ACPI options" <<
2750 2400
2751 config ARCH_HIBERNATION_HEADER !! 2401 source "init/Kconfig"
2752 def_bool y <<
2753 depends on HIBERNATION <<
2754 2402
2755 source "kernel/power/Kconfig" !! 2403 source "kernel/Kconfig.freezer"
2756 2404
2757 source "drivers/acpi/Kconfig" !! 2405 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2758 2406
2759 config X86_APM_BOOT !! 2407 config HW_HAS_EISA
2760 def_bool y !! 2408 bool
2761 depends on APM !! 2409 config HW_HAS_PCI
>> 2410 bool
2762 2411
2763 menuconfig APM !! 2412 config PCI
2764 tristate "APM (Advanced Power Managem !! 2413 bool "Support for PCI controller"
2765 depends on X86_32 && PM_SLEEP !! 2414 depends on HW_HAS_PCI
2766 help !! 2415 select PCI_DOMAINS
2767 APM is a BIOS specification for sav !! 2416 select NO_GENERIC_PCI_IOPORT_MAP
2768 techniques. This is mostly useful f !! 2417 help
2769 APM compliant BIOSes. If you say Y !! 2418 Find out whether you have a PCI motherboard. PCI is the name of a
2770 reset after a RESUME operation, the !! 2419 bus system, i.e. the way the CPU talks to the other stuff inside
2771 battery status information, and use !! 2420 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2772 notification of APM "events" (e.g. !! 2421 say Y, otherwise N.
2773 <<
2774 If you select "Y" here, you can dis <<
2775 BIOS by passing the "apm=off" optio <<
2776 <<
2777 Note that the APM support is almost <<
2778 machines with more than one CPU. <<
2779 <<
2780 In order to use APM, you will need <<
2781 and more information, read <file:Do <<
2782 and the Battery Powered Linux mini- <<
2783 <http://www.tldp.org/docs.html#howt <<
2784 2422
2785 This driver does not spin down disk !! 2423 config PCI_DOMAINS
2786 manpage ("man 8 hdparm") for that), !! 2424 bool
2787 VESA-compliant "green" monitors. <<
2788 <<
2789 This driver does not support the TI <<
2790 486/DX4/75 because they don't have <<
2791 desktop machines also don't have co <<
2792 may cause those machines to panic d <<
2793 <<
2794 Generally, if you don't have a batt <<
2795 much point in using this driver and <<
2796 random kernel OOPSes or reboots tha <<
2797 anything, try disabling/enabling th <<
2798 APM in your BIOS). <<
2799 <<
2800 Some other things you should try wh <<
2801 "weird" problems: <<
2802 <<
2803 1) make sure that you have enough s <<
2804 enabled. <<
2805 2) pass the "idle=poll" option to t <<
2806 3) switch on floating point emulati <<
2807 the "no387" option to the kernel <<
2808 4) pass the "floppy=nodma" option t <<
2809 5) pass the "mem=4M" option to the <<
2810 all but the first 4 MB of RAM) <<
2811 6) make sure that the CPU is not ov <<
2812 7) read the sig11 FAQ at <http://ww <<
2813 8) disable the cache from your BIOS <<
2814 9) install a fan for the video card <<
2815 10) install a better fan for the CP <<
2816 11) exchange RAM chips <<
2817 12) exchange the motherboard. <<
2818 <<
2819 To compile this driver as a module, <<
2820 module will be called apm. <<
2821 <<
2822 if APM <<
2823 <<
2824 config APM_IGNORE_USER_SUSPEND <<
2825 bool "Ignore USER SUSPEND" <<
2826 help <<
2827 This option will ignore USER SUSPEN <<
2828 compliant APM BIOS, you want to say <<
2829 series notebooks, it is necessary t <<
2830 <<
2831 config APM_DO_ENABLE <<
2832 bool "Enable PM at boot time" <<
2833 help <<
2834 Enable APM features at boot time. F <<
2835 specification: "When disabled, the <<
2836 power manage devices, enter the Sta <<
2837 State, or take power saving steps i <<
2838 This driver will make CPU Idle call <<
2839 feature is turned off -- see "Do CP <<
2840 should always save battery power, b <<
2841 will be dependent on your BIOS impl <<
2842 this option off if your computer ha <<
2843 support, or if it beeps continuousl <<
2844 this off if you have a NEC UltraLit <<
2845 T400CDT. This is off by default sin <<
2846 this feature. <<
2847 <<
2848 config APM_CPU_IDLE <<
2849 depends on CPU_IDLE <<
2850 bool "Make CPU Idle calls when idle" <<
2851 help <<
2852 Enable calls to APM CPU Idle/CPU Bu <<
2853 On some machines, this can activate <<
2854 a slowed CPU clock rate, when the m <<
2855 are made after the idle loop has ru <<
2856 333 mS). On some machines, this wil <<
2857 whenever the CPU becomes idle. (On <<
2858 this option does nothing.) <<
2859 <<
2860 config APM_DISPLAY_BLANK <<
2861 bool "Enable console blanking using A <<
2862 help <<
2863 Enable console blanking using the A <<
2864 turn off the LCD backlight when the <<
2865 virtual console blanks the screen. <<
2866 the virtual console screen blanker, <<
2867 when using the X Window system. Thi <<
2868 do with your VESA-compliant power-s <<
2869 option doesn't work for all laptops <<
2870 backlight at all, or it might print <<
2871 especially if you are using gpm. <<
2872 <<
2873 config APM_ALLOW_INTS <<
2874 bool "Allow interrupts during APM BIO <<
2875 help <<
2876 Normally we disable external interr <<
2877 the APM BIOS as a measure to lessen <<
2878 BIOS implementation. The BIOS shou <<
2879 needs to. Unfortunately, some BIOS <<
2880 many of the newer IBM Thinkpads. I <<
2881 suspend, try setting this to Y. Ot <<
2882 2425
2883 endif # APM !! 2426 source "drivers/pci/Kconfig"
2884 2427
2885 source "drivers/cpufreq/Kconfig" !! 2428 source "drivers/pci/pcie/Kconfig"
2886 2429
2887 source "drivers/cpuidle/Kconfig" !! 2430 #
>> 2431 # ISA support is now enabled via select. Too many systems still have the one
>> 2432 # or other ISA chip on the board that users don't know about so don't expect
>> 2433 # users to choose the right thing ...
>> 2434 #
>> 2435 config ISA
>> 2436 bool
2888 2437
2889 source "drivers/idle/Kconfig" !! 2438 config EISA
>> 2439 bool "EISA support"
>> 2440 depends on HW_HAS_EISA
>> 2441 select ISA
>> 2442 select GENERIC_ISA_DMA
>> 2443 ---help---
>> 2444 The Extended Industry Standard Architecture (EISA) bus was
>> 2445 developed as an open alternative to the IBM MicroChannel bus.
>> 2446
>> 2447 The EISA bus provided some of the features of the IBM MicroChannel
>> 2448 bus while maintaining backward compatibility with cards made for
>> 2449 the older ISA bus. The EISA bus saw limited use between 1988 and
>> 2450 1995 when it was made obsolete by the PCI bus.
>> 2451
>> 2452 Say Y here if you are building a kernel for an EISA-based machine.
>> 2453
>> 2454 Otherwise, say N.
>> 2455
>> 2456 source "drivers/eisa/Kconfig"
>> 2457
>> 2458 config TC
>> 2459 bool "TURBOchannel support"
>> 2460 depends on MACH_DECSTATION
>> 2461 help
>> 2462 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
>> 2463 processors. TURBOchannel programming specifications are available
>> 2464 at:
>> 2465 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
>> 2466 and:
>> 2467 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
>> 2468 Linux driver support status is documented at:
>> 2469 <http://www.linux-mips.org/wiki/DECstation>
2890 2470
2891 endmenu !! 2471 config MMU
>> 2472 bool
>> 2473 default y
2892 2474
2893 menu "Bus options (PCI etc.)" !! 2475 config I8253
>> 2476 bool
>> 2477 select CLKSRC_I8253
>> 2478 select CLKEVT_I8253
>> 2479 select MIPS_EXTERNAL_TIMER
2894 2480
2895 choice !! 2481 config ZONE_DMA32
2896 prompt "PCI access mode" !! 2482 bool
2897 depends on X86_32 && PCI <<
2898 default PCI_GOANY <<
2899 help <<
2900 On PCI systems, the BIOS can be use <<
2901 determine their configuration. Howe <<
2902 have BIOS bugs and may crash if thi <<
2903 PCI-based systems don't have any BI <<
2904 detect the PCI hardware directly wi <<
2905 <<
2906 With this option, you can specify h <<
2907 PCI devices. If you choose "BIOS", <<
2908 if you choose "Direct", the BIOS wo <<
2909 choose "MMConfig", then PCI Express <<
2910 If you choose "Any", the kernel wil <<
2911 direct access method and falls back <<
2912 work. If unsure, go with the defaul <<
2913 <<
2914 config PCI_GOBIOS <<
2915 bool "BIOS" <<
2916 <<
2917 config PCI_GOMMCONFIG <<
2918 bool "MMConfig" <<
2919 <<
2920 config PCI_GODIRECT <<
2921 bool "Direct" <<
2922 <<
2923 config PCI_GOOLPC <<
2924 bool "OLPC XO-1" <<
2925 depends on OLPC <<
2926 2483
2927 config PCI_GOANY !! 2484 source "drivers/pcmcia/Kconfig"
2928 bool "Any" <<
2929 2485
2930 endchoice !! 2486 source "drivers/pci/hotplug/Kconfig"
2931 2487
2932 config PCI_BIOS !! 2488 config RAPIDIO
2933 def_bool y !! 2489 bool "RapidIO support"
2934 depends on X86_32 && PCI && (PCI_GOBI !! 2490 depends on PCI
>> 2491 default n
>> 2492 help
>> 2493 If you say Y here, the kernel will include drivers and
>> 2494 infrastructure code to support RapidIO interconnect devices.
2935 2495
2936 # x86-64 doesn't support PCI BIOS access from !! 2496 source "drivers/rapidio/Kconfig"
2937 config PCI_DIRECT <<
2938 def_bool y <<
2939 depends on PCI && (X86_64 || (PCI_GOD <<
2940 2497
2941 config PCI_MMCONFIG !! 2498 endmenu
2942 bool "Support mmconfig PCI config spa <<
2943 default y <<
2944 depends on PCI && (ACPI || JAILHOUSE_ <<
2945 depends on X86_64 || (PCI_GOANY || PC <<
2946 2499
2947 config PCI_OLPC !! 2500 menu "Executable file formats"
2948 def_bool y <<
2949 depends on PCI && OLPC && (PCI_GOOLPC <<
2950 2501
2951 config PCI_XEN !! 2502 source "fs/Kconfig.binfmt"
2952 def_bool y <<
2953 depends on PCI && XEN <<
2954 2503
2955 config MMCONF_FAM10H !! 2504 config TRAD_SIGNALS
2956 def_bool y !! 2505 bool
2957 depends on X86_64 && PCI_MMCONFIG && <<
2958 2506
2959 config PCI_CNB20LE_QUIRK !! 2507 config MIPS32_COMPAT
2960 bool "Read CNB20LE Host Bridge Window !! 2508 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2961 depends on PCI !! 2509 depends on 64BIT
2962 help 2510 help
2963 Read the PCI windows out of the CNB !! 2511 Select this option if you want Linux/MIPS 32-bit binary
2964 PCI hotplug to work on systems with !! 2512 compatibility. Since all software available for Linux/MIPS is
2965 not have ACPI. !! 2513 currently 32-bit you should say Y here.
2966 <<
2967 There's no public spec for this chi <<
2968 is known to be incomplete. <<
2969 <<
2970 You should say N unless you know yo <<
2971 <<
2972 config ISA_BUS <<
2973 bool "ISA bus support on modern syste <<
2974 help <<
2975 Expose ISA bus device drivers and o <<
2976 configuration. Enable this option i <<
2977 bus. ISA is an older system, displa <<
2978 architectures -- if your target mac <<
2979 not have an ISA bus. <<
2980 <<
2981 If unsure, say N. <<
2982 2514
2983 # x86_64 have no ISA slots, but can have ISA- !! 2515 config COMPAT
2984 config ISA_DMA_API !! 2516 bool
2985 bool "ISA-style DMA support" if (X86_ !! 2517 depends on MIPS32_COMPAT
>> 2518 select ARCH_WANT_OLD_COMPAT_IPC
2986 default y 2519 default y
2987 help <<
2988 Enables ISA-style DMA support for d <<
2989 If unsure, say Y. <<
2990 <<
2991 if X86_32 <<
2992 2520
2993 config ISA !! 2521 config SYSVIPC_COMPAT
2994 bool "ISA support" !! 2522 bool
2995 help !! 2523 depends on COMPAT && SYSVIPC
2996 Find out whether you have ISA slots !! 2524 default y
2997 name of a bus system, i.e. the way <<
2998 inside your box. Other bus systems <<
2999 (MCA) or VESA. ISA is an older sys <<
3000 newer boards don't support it. If <<
3001 <<
3002 config SCx200 <<
3003 tristate "NatSemi SCx200 support" <<
3004 help <<
3005 This provides basic support for Nat <<
3006 (now AMD's) Geode processors. The <<
3007 PCI-IDs of several on-chip devices, <<
3008 for other scx200_* drivers. <<
3009 <<
3010 If compiled as a module, the driver <<
3011 <<
3012 config SCx200HR_TIMER <<
3013 tristate "NatSemi SCx200 27MHz High-R <<
3014 depends on SCx200 <<
3015 default y <<
3016 help <<
3017 This driver provides a clocksource <<
3018 27MHz high-resolution timer. Its a <<
3019 NSC Geode SC-1100's buggy TSC, whic <<
3020 processor goes idle (as is done by <<
3021 other workaround is idle=poll boot <<
3022 <<
3023 config OLPC <<
3024 bool "One Laptop Per Child support" <<
3025 depends on !X86_PAE <<
3026 select GPIOLIB <<
3027 select OF <<
3028 select OF_PROMTREE <<
3029 select IRQ_DOMAIN <<
3030 select OLPC_EC <<
3031 help <<
3032 Add support for detecting the uniqu <<
3033 XO hardware. <<
3034 2525
3035 config OLPC_XO1_PM !! 2526 config MIPS32_O32
3036 bool "OLPC XO-1 Power Management" !! 2527 bool "Kernel support for o32 binaries"
3037 depends on OLPC && MFD_CS5535=y && PM !! 2528 depends on MIPS32_COMPAT
3038 help 2529 help
3039 Add support for poweroff and suspen !! 2530 Select this option if you want to run o32 binaries. These are pure
>> 2531 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
>> 2532 existing binaries are in this format.
3040 2533
3041 config OLPC_XO1_RTC !! 2534 If unsure, say Y.
3042 bool "OLPC XO-1 Real Time Clock" <<
3043 depends on OLPC_XO1_PM && RTC_DRV_CMO <<
3044 help <<
3045 Add support for the XO-1 real time <<
3046 programmable wakeup source. <<
3047 2535
3048 config OLPC_XO1_SCI !! 2536 config MIPS32_N32
3049 bool "OLPC XO-1 SCI extras" !! 2537 bool "Kernel support for n32 binaries"
3050 depends on OLPC && OLPC_XO1_PM && GPI !! 2538 depends on MIPS32_COMPAT
3051 depends on INPUT=y !! 2539 help
3052 select POWER_SUPPLY !! 2540 Select this option if you want to run n32 binaries. These are
3053 help !! 2541 64-bit binaries using 32-bit quantities for addressing and certain
3054 Add support for SCI-based features !! 2542 data that would normally be 64-bit. They are used in special
3055 - EC-driven system wakeups !! 2543 cases.
3056 - Power button <<
3057 - Ebook switch <<
3058 - Lid switch <<
3059 - AC adapter status updates <<
3060 - Battery status updates <<
3061 2544
3062 config OLPC_XO15_SCI !! 2545 If unsure, say N.
3063 bool "OLPC XO-1.5 SCI extras" <<
3064 depends on OLPC && ACPI <<
3065 select POWER_SUPPLY <<
3066 help <<
3067 Add support for SCI-based features <<
3068 - EC-driven system wakeups <<
3069 - AC adapter status updates <<
3070 - Battery status updates <<
3071 2546
3072 config GEODE_COMMON !! 2547 config BINFMT_ELF32
3073 bool 2548 bool
>> 2549 default y if MIPS32_O32 || MIPS32_N32
3074 2550
3075 config ALIX !! 2551 endmenu
3076 bool "PCEngines ALIX System Support ( <<
3077 select GPIOLIB <<
3078 select GEODE_COMMON <<
3079 help <<
3080 This option enables system support <<
3081 At present this just sets up LEDs f <<
3082 ALIX2/3/6 boards. However, other s <<
3083 get added here. <<
3084 <<
3085 Note: You must still enable the dri <<
3086 (GPIO_CS5535 & LEDS_GPIO) to actual <<
3087 2552
3088 Note: You have to set alix.force=1 !! 2553 menu "Power management options"
3089 2554
3090 config NET5501 !! 2555 config ARCH_HIBERNATION_POSSIBLE
3091 bool "Soekris Engineering net5501 Sys !! 2556 def_bool y
3092 select GPIOLIB !! 2557 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3093 select GEODE_COMMON <<
3094 help <<
3095 This option enables system support <<
3096 2558
3097 config GEOS !! 2559 config ARCH_SUSPEND_POSSIBLE
3098 bool "Traverse Technologies GEOS Syst !! 2560 def_bool y
3099 select GPIOLIB !! 2561 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3100 select GEODE_COMMON <<
3101 depends on DMI <<
3102 help <<
3103 This option enables system support <<
3104 2562
3105 config TS5500 !! 2563 source "kernel/power/Kconfig"
3106 bool "Technologic Systems TS-5500 pla <<
3107 depends on MELAN <<
3108 select CHECK_SIGNATURE <<
3109 select NEW_LEDS <<
3110 select LEDS_CLASS <<
3111 help <<
3112 This option enables system support <<
3113 2564
3114 endif # X86_32 !! 2565 endmenu
3115 2566
3116 config AMD_NB !! 2567 config MIPS_EXTERNAL_TIMER
3117 def_bool y !! 2568 bool
3118 depends on CPU_SUP_AMD && PCI <<
3119 2569
>> 2570 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
>> 2571 menu "CPU Power Management"
>> 2572 source "drivers/cpufreq/Kconfig"
3120 endmenu 2573 endmenu
>> 2574 endif
3121 2575
3122 menu "Binary Emulations" !! 2576 source "net/Kconfig"
3123 <<
3124 config IA32_EMULATION <<
3125 bool "IA32 Emulation" <<
3126 depends on X86_64 <<
3127 select ARCH_WANT_OLD_COMPAT_IPC <<
3128 select BINFMT_ELF <<
3129 select COMPAT_OLD_SIGACTION <<
3130 help <<
3131 Include code to run legacy 32-bit p <<
3132 64-bit kernel. You should likely tu <<
3133 100% sure that you don't have any 3 <<
3134 2577
3135 config IA32_EMULATION_DEFAULT_DISABLED !! 2578 source "drivers/Kconfig"
3136 bool "IA32 emulation disabled by defa <<
3137 default n <<
3138 depends on IA32_EMULATION <<
3139 help <<
3140 Make IA32 emulation disabled by def <<
3141 processes and access to 32-bit sysc <<
3142 default value. <<
3143 <<
3144 config X86_X32_ABI <<
3145 bool "x32 ABI for 64-bit mode" <<
3146 depends on X86_64 <<
3147 # llvm-objcopy does not convert x86_6 <<
3148 # compressed debug sections to x86_x3 <<
3149 # https://github.com/ClangBuiltLinux/ <<
3150 # https://github.com/ClangBuiltLinux/ <<
3151 depends on $(success,$(OBJCOPY) --ver <<
3152 help <<
3153 Include code to run binaries for th <<
3154 for 64-bit processors. An x32 proc <<
3155 full 64-bit register file and wide <<
3156 pointers at 32 bits for smaller mem <<
3157 2579
3158 config COMPAT_32 !! 2580 source "drivers/firmware/Kconfig"
3159 def_bool y <<
3160 depends on IA32_EMULATION || X86_32 <<
3161 select HAVE_UID16 <<
3162 select OLD_SIGSUSPEND3 <<
3163 2581
3164 config COMPAT !! 2582 source "fs/Kconfig"
3165 def_bool y <<
3166 depends on IA32_EMULATION || X86_X32_ <<
3167 2583
3168 config COMPAT_FOR_U64_ALIGNMENT !! 2584 source "arch/mips/Kconfig.debug"
3169 def_bool y <<
3170 depends on COMPAT <<
3171 2585
3172 endmenu !! 2586 source "security/Kconfig"
3173 2587
3174 config HAVE_ATOMIC_IOMAP !! 2588 source "crypto/Kconfig"
3175 def_bool y <<
3176 depends on X86_32 <<
3177 2589
3178 source "arch/x86/kvm/Kconfig" !! 2590 source "lib/Kconfig"
3179 2591
3180 source "arch/x86/Kconfig.assembler" !! 2592 source "arch/mips/kvm/Kconfig"
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.