1 # SPDX-License-Identifier: GPL-2.0 !! 1 config 64BIT
2 config LOONGARCH !! 2 bool "64-bit kernel" if "$(ARCH)" = "sparc"
>> 3 default "$(ARCH)" = "sparc64"
>> 4 help
>> 5 SPARC is a family of RISC microprocessors designed and marketed by
>> 6 Sun Microsystems, incorporated. They are very widely found in Sun
>> 7 workstations and clones.
>> 8
>> 9 Say yes to build a 64-bit kernel - formerly known as sparc64
>> 10 Say no to build a 32-bit kernel - formerly known as sparc
>> 11
>> 12 config SPARC
3 bool 13 bool
4 default y 14 default y
5 select ACPI !! 15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
6 select ACPI_GENERIC_GSI if ACPI <<
7 select ACPI_MCFG if ACPI <<
8 select ACPI_HOTPLUG_CPU if ACPI_PROCES <<
9 select ACPI_PPTT if ACPI <<
10 select ACPI_SYSTEM_POWER_STATES_SUPPOR <<
11 select ARCH_BINFMT_ELF_STATE <<
12 select ARCH_DISABLE_KASAN_INLINE <<
13 select ARCH_ENABLE_MEMORY_HOTPLUG <<
14 select ARCH_ENABLE_MEMORY_HOTREMOVE <<
15 select ARCH_ENABLE_THP_MIGRATION if TR <<
16 select ARCH_HAS_ACPI_TABLE_UPGRADE <<
17 select ARCH_HAS_CPU_FINALIZE_INIT <<
18 select ARCH_HAS_CURRENT_STACK_POINTER <<
19 select ARCH_HAS_DEBUG_VM_PGTABLE <<
20 select ARCH_HAS_FAST_MULTIPLIER <<
21 select ARCH_HAS_FORTIFY_SOURCE <<
22 select ARCH_HAS_KCOV <<
23 select ARCH_HAS_KERNEL_FPU_SUPPORT if <<
24 select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS <<
25 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
26 select ARCH_HAS_PTE_DEVMAP <<
27 select ARCH_HAS_PTE_SPECIAL <<
28 select ARCH_HAS_SET_MEMORY <<
29 select ARCH_HAS_SET_DIRECT_MAP <<
30 select ARCH_HAS_TICK_BROADCAST if GENE <<
31 select ARCH_INLINE_READ_LOCK if !PREEM <<
32 select ARCH_INLINE_READ_LOCK_BH if !PR <<
33 select ARCH_INLINE_READ_LOCK_IRQ if !P <<
34 select ARCH_INLINE_READ_LOCK_IRQSAVE i <<
35 select ARCH_INLINE_READ_UNLOCK if !PRE <<
36 select ARCH_INLINE_READ_UNLOCK_BH if ! <<
37 select ARCH_INLINE_READ_UNLOCK_IRQ if <<
38 select ARCH_INLINE_READ_UNLOCK_IRQREST <<
39 select ARCH_INLINE_WRITE_LOCK if !PREE <<
40 select ARCH_INLINE_WRITE_LOCK_BH if !P <<
41 select ARCH_INLINE_WRITE_LOCK_IRQ if ! <<
42 select ARCH_INLINE_WRITE_LOCK_IRQSAVE <<
43 select ARCH_INLINE_WRITE_UNLOCK if !PR <<
44 select ARCH_INLINE_WRITE_UNLOCK_BH if <<
45 select ARCH_INLINE_WRITE_UNLOCK_IRQ if <<
46 select ARCH_INLINE_WRITE_UNLOCK_IRQRES <<
47 select ARCH_INLINE_SPIN_TRYLOCK if !PR <<
48 select ARCH_INLINE_SPIN_TRYLOCK_BH if <<
49 select ARCH_INLINE_SPIN_LOCK if !PREEM <<
50 select ARCH_INLINE_SPIN_LOCK_BH if !PR <<
51 select ARCH_INLINE_SPIN_LOCK_IRQ if !P <<
52 select ARCH_INLINE_SPIN_LOCK_IRQSAVE i <<
53 select ARCH_INLINE_SPIN_UNLOCK if !PRE <<
54 select ARCH_INLINE_SPIN_UNLOCK_BH if ! <<
55 select ARCH_INLINE_SPIN_UNLOCK_IRQ if <<
56 select ARCH_INLINE_SPIN_UNLOCK_IRQREST <<
57 select ARCH_KEEP_MEMBLOCK <<
58 select ARCH_MIGHT_HAVE_PC_PARPORT <<
59 select ARCH_MIGHT_HAVE_PC_SERIO 16 select ARCH_MIGHT_HAVE_PC_SERIO
60 select ARCH_SPARSEMEM_ENABLE !! 17 select OF
61 select ARCH_STACKWALK !! 18 select OF_PROMTREE
62 select ARCH_SUPPORTS_ACPI !! 19 select HAVE_IDE
63 select ARCH_SUPPORTS_ATOMIC_RMW !! 20 select HAVE_OPROFILE
64 select ARCH_SUPPORTS_HUGETLBFS !! 21 select HAVE_ARCH_KGDB if !SMP || SPARC64
65 select ARCH_SUPPORTS_INT128 if CC_HAS_ !! 22 select HAVE_ARCH_TRACEHOOK
66 select ARCH_SUPPORTS_LTO_CLANG !! 23 select HAVE_EXIT_THREAD
67 select ARCH_SUPPORTS_LTO_CLANG_THIN !! 24 select HAVE_PCI
68 select ARCH_SUPPORTS_NUMA_BALANCING !! 25 select SYSCTL_EXCEPTION_TRACE
69 select ARCH_USE_BUILTIN_BSWAP !! 26 select RTC_CLASS
70 select ARCH_USE_CMPXCHG_LOCKREF !! 27 select RTC_DRV_M48T59
71 select ARCH_USE_QUEUED_RWLOCKS !! 28 select RTC_SYSTOHC
72 select ARCH_USE_QUEUED_SPINLOCKS !! 29 select HAVE_ARCH_JUMP_LABEL if SPARC64
73 select ARCH_WANT_DEFAULT_BPF_JIT <<
74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
75 select ARCH_WANT_LD_ORPHAN_WARN <<
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM <<
77 select ARCH_WANTS_NO_INSTR <<
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC <<
79 select BUILDTIME_TABLE_SORT <<
80 select COMMON_CLK <<
81 select CPU_PM <<
82 select EFI <<
83 select GENERIC_CLOCKEVENTS <<
84 select GENERIC_CMOS_UPDATE <<
85 select GENERIC_CPU_AUTOPROBE <<
86 select GENERIC_CPU_DEVICES <<
87 select GENERIC_CPU_VULNERABILITIES <<
88 select GENERIC_ENTRY <<
89 select GENERIC_GETTIMEOFDAY <<
90 select GENERIC_IOREMAP if !ARCH_IOREMA <<
91 select GENERIC_IRQ_MATRIX_ALLOCATOR <<
92 select GENERIC_IRQ_MULTI_HANDLER <<
93 select GENERIC_IRQ_PROBE <<
94 select GENERIC_IRQ_SHOW 30 select GENERIC_IRQ_SHOW
95 select GENERIC_LIB_ASHLDI3 !! 31 select ARCH_WANT_IPC_PARSE_VERSION
96 select GENERIC_LIB_ASHRDI3 <<
97 select GENERIC_LIB_CMPDI2 <<
98 select GENERIC_LIB_LSHRDI3 <<
99 select GENERIC_LIB_UCMPDI2 <<
100 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
101 select GENERIC_PCI_IOMAP 32 select GENERIC_PCI_IOMAP
102 select GENERIC_SCHED_CLOCK !! 33 select HAVE_NMI_WATCHDOG if SPARC64
>> 34 select HAVE_CBPF_JIT if SPARC32
>> 35 select HAVE_EBPF_JIT if SPARC64
>> 36 select HAVE_DEBUG_BUGVERBOSE
103 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL !! 38 select GENERIC_CLOCKEVENTS
105 select GENERIC_VDSO_TIME_NS !! 39 select GENERIC_STRNCPY_FROM_USER
106 select GPIOLIB !! 40 select GENERIC_STRNLEN_USER
107 select HAS_IOPORT !! 41 select MODULES_USE_ELF_RELA
108 select HAVE_ARCH_AUDITSYSCALL !! 42 select PCI_SYSCALL if PCI
109 select HAVE_ARCH_JUMP_LABEL !! 43 select ODD_RT_SIGACTION
110 select HAVE_ARCH_JUMP_LABEL_RELATIVE !! 44 select OLD_SIGSUSPEND
111 select HAVE_ARCH_KASAN !! 45 select CPU_NO_EFFICIENT_FFS
112 select HAVE_ARCH_KFENCE !! 46 select LOCKDEP_SMALL if LOCKDEP
113 select HAVE_ARCH_KGDB if PERF_EVENTS !! 47 select NEED_DMA_MAP_STATE
114 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 48 select NEED_SG_DMA_LENGTH
115 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 49
116 select HAVE_ARCH_SECCOMP !! 50 config SPARC32
117 select HAVE_ARCH_SECCOMP_FILTER !! 51 def_bool !64BIT
118 select HAVE_ARCH_TRACEHOOK !! 52 select ARCH_32BIT_OFF_T
>> 53 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 54 select GENERIC_ATOMIC64
>> 55 select CLZ_TAB
>> 56 select HAVE_UID16
>> 57 select OLD_SIGACTION
>> 58
>> 59 config SPARC64
>> 60 def_bool 64BIT
>> 61 select HAVE_FUNCTION_TRACER
>> 62 select HAVE_FUNCTION_GRAPH_TRACER
>> 63 select HAVE_KRETPROBES
>> 64 select HAVE_KPROBES
>> 65 select HAVE_RCU_TABLE_FREE if SMP
>> 66 select HAVE_MEMBLOCK_NODE_MAP
119 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 67 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
120 select HAVE_ARCH_USERFAULTFD_MINOR if <<
121 select HAVE_ASM_MODVERSIONS <<
122 select HAVE_CONTEXT_TRACKING_USER <<
123 select HAVE_C_RECORDMCOUNT <<
124 select HAVE_DEBUG_KMEMLEAK <<
125 select HAVE_DEBUG_STACKOVERFLOW <<
126 select HAVE_DMA_CONTIGUOUS <<
127 select HAVE_DYNAMIC_FTRACE 68 select HAVE_DYNAMIC_FTRACE
128 select HAVE_DYNAMIC_FTRACE_WITH_ARGS <<
129 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
130 select HAVE_DYNAMIC_FTRACE_WITH_REGS <<
131 select HAVE_EBPF_JIT <<
132 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
133 select HAVE_EXIT_THREAD <<
134 select HAVE_GUP_FAST <<
135 select HAVE_FTRACE_MCOUNT_RECORD 69 select HAVE_FTRACE_MCOUNT_RECORD
136 select HAVE_FUNCTION_ARG_ACCESS_API <<
137 select HAVE_FUNCTION_ERROR_INJECTION <<
138 select HAVE_FUNCTION_GRAPH_RETVAL if H <<
139 select HAVE_FUNCTION_GRAPH_TRACER <<
140 select HAVE_FUNCTION_TRACER <<
141 select HAVE_GCC_PLUGINS <<
142 select HAVE_GENERIC_VDSO <<
143 select HAVE_HW_BREAKPOINT if PERF_EVEN <<
144 select HAVE_IOREMAP_PROT <<
145 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
146 select HAVE_IRQ_TIME_ACCOUNTING <<
147 select HAVE_KPROBES <<
148 select HAVE_KPROBES_ON_FTRACE <<
149 select HAVE_KRETPROBES <<
150 select HAVE_LIVEPATCH <<
151 select HAVE_MOD_ARCH_SPECIFIC <<
152 select HAVE_NMI <<
153 select HAVE_OBJTOOL if AS_HAS_EXPLICIT <<
154 select HAVE_PCI <<
155 select HAVE_PERF_EVENTS <<
156 select HAVE_PERF_REGS <<
157 select HAVE_PERF_USER_STACK_DUMP <<
158 select HAVE_PREEMPT_DYNAMIC_KEY <<
159 select HAVE_REGS_AND_STACK_ACCESS_API <<
160 select HAVE_RELIABLE_STACKTRACE if UNW <<
161 select HAVE_RETHOOK <<
162 select HAVE_RSEQ <<
163 select HAVE_RUST <<
164 select HAVE_SAMPLE_FTRACE_DIRECT <<
165 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
166 select HAVE_SETUP_PER_CPU_AREA if NUMA <<
167 select HAVE_STACK_VALIDATION if HAVE_O <<
168 select HAVE_STACKPROTECTOR <<
169 select HAVE_SYSCALL_TRACEPOINTS 70 select HAVE_SYSCALL_TRACEPOINTS
170 select HAVE_TIF_NOHZ !! 71 select HAVE_CONTEXT_TRACKING
171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if !! 72 select HAVE_DEBUG_KMEMLEAK
172 select IRQ_FORCED_THREADING !! 73 select IOMMU_HELPER
173 select IRQ_LOONGARCH_CPU <<
174 select LOCK_MM_AND_FIND_VMA <<
175 select MMU_GATHER_MERGE_VMAS if MMU <<
176 select MODULES_USE_ELF_RELA if MODULES <<
177 select NEED_PER_CPU_EMBED_FIRST_CHUNK <<
178 select NEED_PER_CPU_PAGE_FIRST_CHUNK <<
179 select OF <<
180 select OF_EARLY_FLATTREE <<
181 select PCI <<
182 select PCI_DOMAINS_GENERIC <<
183 select PCI_ECAM if ACPI <<
184 select PCI_LOONGSON <<
185 select PCI_MSI_ARCH_FALLBACKS <<
186 select PCI_QUIRKS <<
187 select PERF_USE_VMALLOC <<
188 select RTC_LIB <<
189 select SPARSE_IRQ 74 select SPARSE_IRQ
190 select SYSCTL_ARCH_UNALIGN_ALLOW !! 75 select RTC_DRV_CMOS
191 select SYSCTL_ARCH_UNALIGN_NO_WARN !! 76 select RTC_DRV_BQ4802
192 select SYSCTL_EXCEPTION_TRACE !! 77 select RTC_DRV_SUN4V
193 select SWIOTLB !! 78 select RTC_DRV_STARFIRE
194 select TRACE_IRQFLAGS_SUPPORT !! 79 select HAVE_PERF_EVENTS
195 select USE_PERCPU_NUMA_NODE_ID !! 80 select PERF_USE_VMALLOC
196 select USER_STACKTRACE_SUPPORT !! 81 select IRQ_PREFLOW_FASTEOI
197 select VDSO_GETRANDOM !! 82 select ARCH_HAVE_NMI_SAFE_CMPXCHG
198 select ZONE_DMA32 !! 83 select HAVE_C_RECORDMCOUNT
199 !! 84 select HAVE_ARCH_AUDITSYSCALL
200 config 32BIT !! 85 select ARCH_SUPPORTS_ATOMIC_RMW
201 bool !! 86 select HAVE_NMI
202 !! 87 select HAVE_REGS_AND_STACK_ACCESS_API
203 config 64BIT !! 88 select ARCH_USE_QUEUED_RWLOCKS
204 def_bool y !! 89 select ARCH_USE_QUEUED_SPINLOCKS
205 !! 90 select GENERIC_TIME_VSYSCALL
206 config GENERIC_BUG !! 91 select ARCH_CLOCKSOURCE_DATA
207 def_bool y !! 92 select ARCH_HAS_PTE_SPECIAL
208 depends on BUG !! 93 select PCI_DOMAINS if PCI
209 94
210 config GENERIC_BUG_RELATIVE_POINTERS !! 95 config ARCH_DEFCONFIG
211 def_bool y !! 96 string
212 depends on GENERIC_BUG !! 97 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 98 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
213 99
214 config GENERIC_CALIBRATE_DELAY !! 100 config ARCH_PROC_KCORE_TEXT
215 def_bool y 101 def_bool y
216 102
217 config GENERIC_CSUM !! 103 config CPU_BIG_ENDIAN
218 def_bool y 104 def_bool y
219 105
220 config GENERIC_HWEIGHT !! 106 config ARCH_ATU
221 def_bool y !! 107 bool
>> 108 default y if SPARC64
222 109
223 config L1_CACHE_SHIFT !! 110 config STACKTRACE_SUPPORT
224 int !! 111 bool
225 default "6" !! 112 default y if SPARC64
226 113
227 config LOCKDEP_SUPPORT 114 config LOCKDEP_SUPPORT
228 bool 115 bool
229 default y !! 116 default y if SPARC64
230 117
231 config STACKTRACE_SUPPORT !! 118 config ARCH_HIBERNATION_POSSIBLE
>> 119 def_bool y if SPARC64
>> 120
>> 121 config AUDIT_ARCH
232 bool 122 bool
233 default y 123 default y
234 124
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli !! 125 config HAVE_SETUP_PER_CPU_AREA
236 # MIPS Loongson code, to preserve Loongson-spe !! 126 def_bool y if SPARC64
237 # are shared between architectures, and specif <<
238 config MACH_LOONGSON32 <<
239 def_bool 32BIT <<
240 127
241 config MACH_LOONGSON64 !! 128 config NEED_PER_CPU_EMBED_FIRST_CHUNK
242 def_bool 64BIT !! 129 def_bool y if SPARC64
243 130
244 config FIX_EARLYCON_MEM !! 131 config NEED_PER_CPU_PAGE_FIRST_CHUNK
245 def_bool y !! 132 def_bool y if SPARC64
246 133
247 config PGTABLE_2LEVEL !! 134 config MMU
248 bool 135 bool
>> 136 default y
249 137
250 config PGTABLE_3LEVEL !! 138 config HIGHMEM
251 bool 139 bool
>> 140 default y if SPARC32
252 141
253 config PGTABLE_4LEVEL !! 142 config ZONE_DMA
254 bool 143 bool
>> 144 default y if SPARC32
255 145
256 config PGTABLE_LEVELS !! 146 config GENERIC_ISA_DMA
257 int <<
258 default 2 if PGTABLE_2LEVEL <<
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 <<
262 config SCHED_OMIT_FRAME_POINTER <<
263 bool 147 bool
264 default y !! 148 default y if SPARC32
265 <<
266 config AS_HAS_EXPLICIT_RELOCS <<
267 def_bool $(as-instr,x:pcalau12i \$t0$( <<
268 <<
269 config AS_HAS_FCSR_CLASS <<
270 def_bool $(as-instr,movfcsr2gr \$t0$(c <<
271 149
272 config AS_HAS_THIN_ADD_SUB !! 150 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
273 def_bool $(cc-option,-Wa$(comma)-mthin !! 151 def_bool y if SPARC64
274 152
275 config AS_HAS_LSX_EXTENSION !! 153 config PGTABLE_LEVELS
276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 154 default 4 if 64BIT
277 !! 155 default 3
278 config AS_HAS_LASX_EXTENSION <<
279 def_bool $(as-instr,xvld \$xr0$(comma) <<
280 <<
281 config AS_HAS_LBT_EXTENSION <<
282 def_bool $(as-instr,movscr2gr \$a0$(co <<
283 156
284 config AS_HAS_LVZ_EXTENSION !! 157 config ARCH_SUPPORTS_UPROBES
285 def_bool $(as-instr,hvcl 0) !! 158 def_bool y if SPARC64
286 159
287 menu "Kernel type and options" !! 160 menu "Processor type and features"
288 161
289 source "kernel/Kconfig.hz" !! 162 config SMP
>> 163 bool "Symmetric multi-processing support"
>> 164 ---help---
>> 165 This enables support for systems with more than one CPU. If you have
>> 166 a system with only one CPU, say N. If you have a system with more
>> 167 than one CPU, say Y.
290 168
291 choice !! 169 If you say N here, the kernel will run on uni- and multiprocessor
292 prompt "Page Table Layout" !! 170 machines, but will use only one CPU of a multiprocessor machine. If
293 default 16KB_2LEVEL if 32BIT !! 171 you say Y here, the kernel will run on many, but not all,
294 default 16KB_3LEVEL if 64BIT !! 172 uniprocessor machines. On a uniprocessor machine, the kernel
295 help !! 173 will run faster if you say N here.
296 Allows choosing the page table layou <<
297 of page size and page table levels. <<
298 address space are determined by the <<
299 <<
300 config 4KB_3LEVEL <<
301 bool "4KB with 3 levels" <<
302 select HAVE_PAGE_SIZE_4KB <<
303 select PGTABLE_3LEVEL <<
304 help <<
305 This option selects 4KB page size wi <<
306 support a maximum of 39 bits of appl <<
307 <<
308 config 4KB_4LEVEL <<
309 bool "4KB with 4 levels" <<
310 select HAVE_PAGE_SIZE_4KB <<
311 select PGTABLE_4LEVEL <<
312 help <<
313 This option selects 4KB page size wi <<
314 support a maximum of 48 bits of appl <<
315 <<
316 config 16KB_2LEVEL <<
317 bool "16KB with 2 levels" <<
318 select HAVE_PAGE_SIZE_16KB <<
319 select PGTABLE_2LEVEL <<
320 help <<
321 This option selects 16KB page size w <<
322 support a maximum of 36 bits of appl <<
323 <<
324 config 16KB_3LEVEL <<
325 bool "16KB with 3 levels" <<
326 select HAVE_PAGE_SIZE_16KB <<
327 select PGTABLE_3LEVEL <<
328 help <<
329 This option selects 16KB page size w <<
330 support a maximum of 47 bits of appl <<
331 <<
332 config 64KB_2LEVEL <<
333 bool "64KB with 2 levels" <<
334 select HAVE_PAGE_SIZE_64KB <<
335 select PGTABLE_2LEVEL <<
336 help <<
337 This option selects 64KB page size w <<
338 support a maximum of 42 bits of appl <<
339 <<
340 config 64KB_3LEVEL <<
341 bool "64KB with 3 levels" <<
342 select HAVE_PAGE_SIZE_64KB <<
343 select PGTABLE_3LEVEL <<
344 help <<
345 This option selects 64KB page size w <<
346 support a maximum of 55 bits of appl <<
347 174
348 endchoice !! 175 People using multiprocessor machines who say Y here should also say
>> 176 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 177 Management" code will be disabled if you say Y here.
349 178
350 config CMDLINE !! 179 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
351 string "Built-in kernel command line" !! 180 available at <http://www.tldp.org/docs.html#howto>.
352 help <<
353 For most platforms, the arguments fo <<
354 are provided at run-time, during boo <<
355 where either no arguments are being <<
356 arguments are insufficient or even i <<
357 181
358 When that occurs, it is possible to !! 182 If you don't know what to do here, say N.
359 line here and choose how the kernel <<
360 183
361 choice !! 184 config NR_CPUS
362 prompt "Kernel command line type" !! 185 int "Maximum number of CPUs"
363 default CMDLINE_BOOTLOADER !! 186 depends on SMP
364 help !! 187 range 2 32 if SPARC32
365 Choose how the kernel will handle th !! 188 range 2 4096 if SPARC64
366 line. !! 189 default 32 if SPARC32
>> 190 default 4096 if SPARC64
367 191
368 config CMDLINE_BOOTLOADER !! 192 source "kernel/Kconfig.hz"
369 bool "Use bootloader kernel arguments <<
370 help <<
371 Prefer the command-line passed by th <<
372 Use the built-in command line as fal <<
373 during boot. This is the default beh <<
374 193
375 config CMDLINE_EXTEND !! 194 config RWSEM_GENERIC_SPINLOCK
376 bool "Use built-in to extend bootloade !! 195 bool
377 help !! 196 default y if SPARC32
378 The command-line arguments provided <<
379 appended to the built-in command lin <<
380 cases where the provided arguments a <<
381 you don't want to or cannot modify t <<
382 197
383 config CMDLINE_FORCE !! 198 config RWSEM_XCHGADD_ALGORITHM
384 bool "Always use the built-in kernel c !! 199 bool
385 help !! 200 default y if SPARC64
386 Always use the built-in command line <<
387 boot. This is useful in case you nee <<
388 command line on systems where you do <<
389 over it. <<
390 201
391 endchoice !! 202 config GENERIC_HWEIGHT
>> 203 bool
>> 204 default y
392 205
393 config BUILTIN_DTB !! 206 config GENERIC_CALIBRATE_DELAY
394 bool "Enable built-in dtb in kernel" !! 207 bool
395 depends on OF !! 208 default y
396 help <<
397 Some existing systems do not provide <<
398 the kernel at boot time. Let's provi <<
399 kernel, keyed by the dts filename, c <<
400 209
401 Built-in DTBs are generic enough and !! 210 config ARCH_MAY_HAVE_PC_FDC
>> 211 bool
>> 212 default y
402 213
403 config BUILTIN_DTB_NAME !! 214 config EMULATED_CMPXCHG
404 string "Source file for built-in dtb" !! 215 bool
405 depends on BUILTIN_DTB !! 216 default y if SPARC32
406 help 217 help
407 Base name (without suffix, relative !! 218 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
408 for the DTS file that will be used t !! 219 is emulated, and therefore it is not completely atomic.
409 the kernel. <<
410 220
411 config DMI !! 221 # Makefile helpers
412 bool "Enable DMI scanning" !! 222 config SPARC32_SMP
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA !! 223 bool
414 default y 224 default y
415 help !! 225 depends on SPARC32 && SMP
416 This enables SMBIOS/DMI feature for <<
417 DMI to identify machine quirks. <<
418 <<
419 config EFI <<
420 bool "EFI runtime service support" <<
421 select UCS2_STRING <<
422 select EFI_RUNTIME_WRAPPERS <<
423 help <<
424 This enables the kernel to use EFI r <<
425 available (such as the EFI variable <<
426 226
427 config EFI_STUB !! 227 config SPARC64_SMP
428 bool "EFI boot stub support" !! 228 bool
429 default y 229 default y
430 depends on EFI !! 230 depends on SPARC64 && SMP
431 select EFI_GENERIC_STUB <<
432 help <<
433 This kernel feature allows the kerne <<
434 EFI firmware without the use of a bo <<
435 231
436 config SCHED_SMT !! 232 config EARLYFB
437 bool "SMT scheduler support" !! 233 bool "Support for early boot text console"
438 depends on SMP <<
439 default y 234 default y
>> 235 depends on SPARC64
440 help 236 help
441 Improves scheduler's performance whe !! 237 Say Y here to enable a faster early framebuffer boot console.
442 threads in one physical core. <<
443 238
444 config SMP !! 239 config SECCOMP
445 bool "Multi-Processing support" !! 240 bool "Enable seccomp to safely compute untrusted bytecode"
>> 241 depends on SPARC64 && PROC_FS
>> 242 default y
446 help 243 help
447 This enables support for systems wit !! 244 This kernel feature is useful for number crunching applications
448 a system with only one CPU, say N. I !! 245 that may need to compute untrusted bytecode during their
449 than one CPU, say Y. !! 246 execution. By using pipes or other transports made available to
450 !! 247 the process as file descriptors supporting the read/write
451 If you say N here, the kernel will r !! 248 syscalls, it's possible to isolate those applications in
452 machines, but will use only one CPU !! 249 their own address space using seccomp. Once seccomp is
453 you say Y here, the kernel will run !! 250 enabled via /proc/<pid>/seccomp, it cannot be disabled
454 uniprocessor machines. On a uniproce !! 251 and the task is only allowed to execute a few safe syscalls
455 will run faster if you say N here. !! 252 defined by each seccomp mode.
456 <<
457 See also the SMP-HOWTO available at <<
458 253
459 If you don't know what to do here, s !! 254 If unsure, say Y. Only embedded should say N here.
460 255
461 config HOTPLUG_CPU 256 config HOTPLUG_CPU
462 bool "Support for hot-pluggable CPUs" 257 bool "Support for hot-pluggable CPUs"
463 depends on SMP !! 258 depends on SPARC64 && SMP
464 select GENERIC_IRQ_MIGRATION <<
465 help 259 help
466 Say Y here to allow turning CPUs off !! 260 Say Y here to experiment with turning CPUs off and on. CPUs
467 controlled through /sys/devices/syst !! 261 can be controlled through /sys/devices/system/cpu/cpu#.
468 (Note: power management support will <<
469 automatically on SMP systems. ) <<
470 Say N if you want to disable CPU hot 262 Say N if you want to disable CPU hotplug.
471 263
472 config NR_CPUS !! 264 if SPARC64
473 int "Maximum number of CPUs (2-256)" !! 265 source "drivers/cpufreq/Kconfig"
474 range 2 256 !! 266 endif
475 depends on SMP !! 267
476 default "64" !! 268 config US3_MC
>> 269 tristate "UltraSPARC-III Memory Controller driver"
>> 270 depends on SPARC64
>> 271 default y
477 help 272 help
478 This allows you to specify the maxim !! 273 This adds a driver for the UltraSPARC-III memory controller.
479 kernel will support. !! 274 Loading this driver allows exact mnemonic strings to be
>> 275 printed in the event of a memory error, so that the faulty DIMM
>> 276 on the motherboard can be matched to the error.
>> 277
>> 278 If in doubt, say Y, as this information can be very useful.
>> 279
>> 280 # Global things across all Sun machines.
>> 281 config GENERIC_LOCKBREAK
>> 282 bool
>> 283 default y
>> 284 depends on SPARC64 && SMP && PREEMPT
480 285
481 config NUMA 286 config NUMA
482 bool "NUMA Support" !! 287 bool "NUMA support"
483 select SMP !! 288 depends on SPARC64 && SMP
484 help <<
485 Say Y to compile the kernel with NUM <<
486 support. This option improves perfo <<
487 than one NUMA node; on single node s <<
488 to leave it disabled. <<
489 289
490 config NODES_SHIFT 290 config NODES_SHIFT
491 int !! 291 int "Maximum NUMA Nodes (as a power of 2)"
492 default "6" !! 292 range 4 5 if SPARC64
493 depends on NUMA !! 293 default "5"
>> 294 depends on NEED_MULTIPLE_NODES
>> 295 help
>> 296 Specify the maximum number of NUMA Nodes available on the target
>> 297 system. Increases memory reserved to accommodate various tables.
>> 298
>> 299 # Some NUMA nodes have memory ranges that span
>> 300 # other nodes. Even though a pfn is valid and
>> 301 # between a node's start and end pfns, it may not
>> 302 # reside on that node. See memmap_init_zone()
>> 303 # for details.
>> 304 config NODES_SPAN_OTHER_NODES
>> 305 def_bool y
>> 306 depends on NEED_MULTIPLE_NODES
>> 307
>> 308 config ARCH_SELECT_MEMORY_MODEL
>> 309 def_bool y if SPARC64
>> 310
>> 311 config ARCH_SPARSEMEM_ENABLE
>> 312 def_bool y if SPARC64
>> 313 select SPARSEMEM_VMEMMAP_ENABLE
>> 314
>> 315 config ARCH_SPARSEMEM_DEFAULT
>> 316 def_bool y if SPARC64
494 317
495 config ARCH_FORCE_MAX_ORDER !! 318 config FORCE_MAX_ZONEORDER
496 int "Maximum zone order" 319 int "Maximum zone order"
497 default "13" if PAGE_SIZE_64KB !! 320 default "13"
498 default "11" if PAGE_SIZE_16KB <<
499 default "10" <<
500 help 321 help
501 The kernel memory allocator divides 322 The kernel memory allocator divides physically contiguous memory
502 blocks into "zones", where each zone 323 blocks into "zones", where each zone is a power of two number of
503 pages. This option selects the larg 324 pages. This option selects the largest power of two that the kernel
504 keeps in the memory allocator. If y 325 keeps in the memory allocator. If you need to allocate very large
505 blocks of physically contiguous memo 326 blocks of physically contiguous memory, then you may need to
506 increase this value. 327 increase this value.
507 328
508 The page size is not necessarily 4KB !! 329 This config option is actually maximum order plus one. For example,
509 when choosing a value for this optio !! 330 a value of 13 means that the largest free memory block is 2^12 pages.
510 331
511 config ARCH_IOREMAP !! 332 if SPARC64
512 bool "Enable LoongArch DMW-based iorem !! 333 source "kernel/power/Kconfig"
513 help !! 334 endif
514 We use generic TLB-based ioremap() b <<
515 protection support. However, you can <<
516 ioremap() for better performance. <<
517 <<
518 config ARCH_WRITECOMBINE <<
519 bool "Enable WriteCombine (WUC) for io <<
520 help <<
521 LoongArch maintains cache coherency <<
522 with LS7A chipsets the WUC attribute <<
523 is similar to WriteCombine) is out o <<
524 machanism for PCIe devices (this is <<
525 may be fixed in newer chipsets). <<
526 <<
527 This means WUC can only used for wri <<
528 this option is disabled by default, <<
529 SUC for ioremap(). You can enable th <<
530 to run on hardware without this bug. <<
531 <<
532 You can override this setting via wr <<
533 335
534 config ARCH_STRICT_ALIGN !! 336 config SCHED_SMT
535 bool "Enable -mstrict-align to prevent !! 337 bool "SMT (Hyperthreading) scheduler support"
>> 338 depends on SPARC64 && SMP
536 default y 339 default y
537 help 340 help
538 Not all LoongArch cores support h/w !! 341 SMT scheduler support improves the CPU scheduler's decision making
539 -mstrict-align build parameter to pr !! 342 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 343 in some places. If unsure say N here.
540 344
541 CPUs with h/w unaligned access suppo !! 345 config SCHED_MC
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 346 bool "Multi-core scheduler support"
543 !! 347 depends on SPARC64 && SMP
544 CPUs without h/w unaligned access su <<
545 Loongson-2K500/2K1000. <<
546 <<
547 This option is enabled by default to <<
548 on all LoongArch systems. But you ca <<
549 to run kernel only on systems with h <<
550 order to optimise for performance. <<
551 <<
552 config CPU_HAS_FPU <<
553 bool <<
554 default y 348 default y
555 <<
556 config CPU_HAS_LSX <<
557 bool "Support for the Loongson SIMD Ex <<
558 depends on AS_HAS_LSX_EXTENSION <<
559 help 349 help
560 Loongson SIMD Extension (LSX) introd !! 350 Multi-core scheduler support improves the CPU scheduler's decision
561 and a set of SIMD instructions to op !! 351 making when dealing with multi-core CPU chips at a cost of slightly
562 is enabled the kernel will support a !! 352 increased overhead in some places. If unsure say N here.
563 vector register contexts. If you kno <<
564 running on CPUs which do not support <<
565 not be making use of it then you may <<
566 the size & complexity of your kernel <<
567 353
568 If unsure, say Y. !! 354 config CMDLINE_BOOL
>> 355 bool "Default bootloader kernel arguments"
>> 356 depends on SPARC64
569 357
570 config CPU_HAS_LASX !! 358 config CMDLINE
571 bool "Support for the Loongson Advance !! 359 string "Initial kernel command string"
572 depends on CPU_HAS_LSX !! 360 depends on CMDLINE_BOOL
573 depends on AS_HAS_LASX_EXTENSION !! 361 default "console=ttyS0,9600 root=/dev/sda1"
574 help !! 362 help
575 Loongson Advanced SIMD Extension (LA !! 363 Say Y here if you want to be able to pass default arguments to
576 registers and a set of SIMD instruct !! 364 the kernel. This will be overridden by the bootloader, if you
577 option is enabled the kernel will su !! 365 use one (such as SILO). This is most useful if you want to boot
578 vector register contexts. If you kno !! 366 a kernel from TFTP, and want default options to be available
579 running on CPUs which do not support !! 367 with having them passed on the command line.
580 not be making use of it then you may !! 368
581 the size & complexity of your kernel !! 369 NOTE: This option WILL override the PROM bootargs setting!
>> 370
>> 371 config SUN_PM
>> 372 bool
>> 373 default y if SPARC32
>> 374 help
>> 375 Enable power management and CPU standby features on supported
>> 376 SPARC platforms.
>> 377
>> 378 config SPARC_LED
>> 379 tristate "Sun4m LED driver"
>> 380 depends on SPARC32
>> 381 help
>> 382 This driver toggles the front-panel LED on sun4m systems
>> 383 in a user-specifiable manner. Its state can be probed
>> 384 by reading /proc/led and its blinking mode can be changed
>> 385 via writes to /proc/led
>> 386
>> 387 config SERIAL_CONSOLE
>> 388 bool
>> 389 depends on SPARC32
>> 390 default y
>> 391 ---help---
>> 392 If you say Y here, it will be possible to use a serial port as the
>> 393 system console (the system console is the device which receives all
>> 394 kernel messages and warnings and which allows logins in single user
>> 395 mode). This could be useful if some terminal or printer is connected
>> 396 to that serial port.
>> 397
>> 398 Even if you say Y here, the currently visible virtual console
>> 399 (/dev/tty0) will still be used as the system console by default, but
>> 400 you can alter that using a kernel command line option such as
>> 401 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 402 your boot loader (silo) about how to pass options to the kernel at
>> 403 boot time.)
>> 404
>> 405 If you don't have a graphics card installed and you say Y here, the
>> 406 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 407 system console.
>> 408
>> 409 If unsure, say N.
>> 410
>> 411 config SPARC_LEON
>> 412 bool "Sparc Leon processor family"
>> 413 depends on SPARC32
>> 414 select USB_EHCI_BIG_ENDIAN_MMIO
>> 415 select USB_EHCI_BIG_ENDIAN_DESC
>> 416 select USB_UHCI_BIG_ENDIAN_MMIO
>> 417 select USB_UHCI_BIG_ENDIAN_DESC
>> 418 ---help---
>> 419 If you say Y here if you are running on a SPARC-LEON processor.
>> 420 The LEON processor is a synthesizable VHDL model of the
>> 421 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 422 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 423 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 424 toolchain at www.gaisler.com.
>> 425
>> 426 if SPARC_LEON
>> 427 menu "U-Boot options"
>> 428
>> 429 config UBOOT_LOAD_ADDR
>> 430 hex "uImage Load Address"
>> 431 default 0x40004000
>> 432 ---help---
>> 433 U-Boot kernel load address, the address in physical address space
>> 434 where u-boot will place the Linux kernel before booting it.
>> 435 This address is normally the base address of main memory + 0x4000.
>> 436
>> 437 config UBOOT_FLASH_ADDR
>> 438 hex "uImage.o Load Address"
>> 439 default 0x00080000
>> 440 ---help---
>> 441 Optional setting only affecting the uImage.o ELF-image used to
>> 442 download the uImage file to the target using a ELF-loader other than
>> 443 U-Boot. It may for example be used to download an uImage to FLASH with
>> 444 the GRMON utility before even starting u-boot.
>> 445
>> 446 config UBOOT_ENTRY_ADDR
>> 447 hex "uImage Entry Address"
>> 448 default 0xf0004000
>> 449 ---help---
>> 450 Do not change this unless you know what you're doing. This is
>> 451 hardcoded by the SPARC32 and LEON port.
582 452
583 If unsure, say Y. !! 453 This is the virtual address u-boot jumps to when booting the Linux
>> 454 Kernel.
584 455
585 config CPU_HAS_LBT !! 456 endmenu
586 bool "Support for the Loongson Binary !! 457 endif
587 depends on AS_HAS_LBT_EXTENSION <<
588 help <<
589 Loongson Binary Translation (LBT) in <<
590 to SCR3), x86/ARM eflags (eflags) an <<
591 Enabling this option allows the kern <<
592 specific to LBT. <<
593 458
594 If you want to use this feature, suc !! 459 endmenu
595 Translator (LAT), say Y. <<
596 460
597 config CPU_HAS_PREFETCH !! 461 menu "Bus options (PCI etc.)"
>> 462 config SBUS
598 bool 463 bool
599 default y 464 default y
600 465
601 config ARCH_SUPPORTS_KEXEC !! 466 config SBUSCHAR
602 def_bool y !! 467 bool
603 !! 468 default y
604 config ARCH_SUPPORTS_CRASH_DUMP <<
605 def_bool y <<
606 <<
607 config ARCH_SELECTS_CRASH_DUMP <<
608 def_bool y <<
609 depends on CRASH_DUMP <<
610 select RELOCATABLE <<
611 <<
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO <<
613 def_bool CRASH_RESERVE <<
614 <<
615 config RELOCATABLE <<
616 bool "Relocatable kernel" <<
617 select ARCH_HAS_RELR <<
618 help <<
619 This builds the kernel as a Position <<
620 which retains all relocation metadat <<
621 the kernel binary at runtime to a di <<
622 its link address. <<
623 469
624 config RANDOMIZE_BASE !! 470 config SUN_LDOMS
625 bool "Randomize the address of the ker !! 471 bool "Sun Logical Domains support"
626 depends on RELOCATABLE !! 472 depends on SPARC64
627 help 473 help
628 Randomizes the physical and virtual !! 474 Say Y here is you want to support virtual devices via
629 kernel image is loaded, as a securi !! 475 Logical Domains.
630 deters exploit attempts relying on <<
631 of kernel internals. <<
632 476
633 The kernel will be offset by up to !! 477 config PCIC_PCI
>> 478 bool
>> 479 depends on PCI && SPARC32 && !SPARC_LEON
>> 480 default y
634 481
635 If unsure, say N. !! 482 config LEON_PCI
>> 483 bool
>> 484 depends on PCI && SPARC_LEON
>> 485 default y
636 486
637 config RANDOMIZE_BASE_MAX_OFFSET !! 487 config SPARC_GRPCI1
638 hex "Maximum KASLR offset" if EXPERT !! 488 bool "GRPCI Host Bridge Support"
639 depends on RANDOMIZE_BASE !! 489 depends on LEON_PCI
640 range 0x0 0x10000000 !! 490 default y
641 default "0x01000000" <<
642 help 491 help
643 When KASLR is active, this provides !! 492 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
644 be applied to the kernel image. It s !! 493 PCI host controller is typically found in GRLIB SPARC32/LEON
645 amount of physical RAM available in !! 494 systems. The driver has one property (all_pci_errors) controlled
>> 495 from the bootloader that makes the GRPCI to generate interrupts
>> 496 on detected PCI Parity and System errors.
646 497
647 This is limited by the size of the l !! 498 config SPARC_GRPCI2
648 !! 499 bool "GRPCI2 Host Bridge Support"
649 source "kernel/livepatch/Kconfig" !! 500 depends on LEON_PCI
650 !! 501 default y
651 config PARAVIRT <<
652 bool "Enable paravirtualization code" <<
653 depends on AS_HAS_LVZ_EXTENSION <<
654 help 502 help
655 This changes the kernel so it can mo !! 503 Say Y here to include the GRPCI2 Host Bridge Driver.
656 under a hypervisor, potentially impr <<
657 over full virtualization. However, <<
658 the kernel is theoretically slower a <<
659 504
660 config PARAVIRT_TIME_ACCOUNTING !! 505 config SUN_OPENPROMFS
661 bool "Paravirtual steal time accountin !! 506 tristate "Openprom tree appears in /proc/openprom"
662 depends on PARAVIRT <<
663 help 507 help
664 Select this option to enable fine gr !! 508 If you say Y, the OpenPROM device tree will be available as a
665 accounting. Time spent executing oth !! 509 virtual file system, which you can mount to /proc/openprom by "mount
666 the current vCPU is discounted from !! 510 -t openpromfs none /proc/openprom".
667 that, there can be a small performan <<
668 511
669 If in doubt, say N here. !! 512 To compile the /proc/openprom support as a module, choose M here: the
>> 513 module will be called openpromfs.
670 514
671 endmenu !! 515 Only choose N if you know in advance that you will not need to modify
672 !! 516 OpenPROM settings on the running system.
673 config ARCH_SELECT_MEMORY_MODEL <<
674 def_bool y <<
675 517
676 config ARCH_FLATMEM_ENABLE !! 518 # Makefile helpers
677 def_bool y !! 519 config SPARC64_PCI
678 depends on !NUMA <<
679 <<
680 config ARCH_SPARSEMEM_ENABLE <<
681 def_bool y <<
682 select SPARSEMEM_VMEMMAP_ENABLE <<
683 help <<
684 Say Y to support efficient handling <<
685 for architectures which are either N <<
686 or have huge holes in the physical a <<
687 See <file:Documentation/mm/numa.rst> <<
688 <<
689 config ARCH_MEMORY_PROBE <<
690 def_bool y <<
691 depends on MEMORY_HOTPLUG <<
692 <<
693 config MMU <<
694 bool 520 bool
695 default y 521 default y
>> 522 depends on SPARC64 && PCI
696 523
697 config ARCH_MMAP_RND_BITS_MIN !! 524 config SPARC64_PCI_MSI
698 default 12 !! 525 bool
699 !! 526 default y
700 config ARCH_MMAP_RND_BITS_MAX !! 527 depends on SPARC64_PCI && PCI_MSI
701 default 18 <<
702 <<
703 config ARCH_SUPPORTS_UPROBES <<
704 def_bool y <<
705 <<
706 config KASAN_SHADOW_OFFSET <<
707 hex <<
708 default 0x0 <<
709 depends on KASAN <<
710 <<
711 menu "Power management options" <<
712 <<
713 config ARCH_SUSPEND_POSSIBLE <<
714 def_bool y <<
715 528
716 config ARCH_HIBERNATION_POSSIBLE !! 529 endmenu
717 def_bool y <<
718 530
719 source "kernel/power/Kconfig" !! 531 config COMPAT
720 source "drivers/acpi/Kconfig" !! 532 bool
721 source "drivers/cpufreq/Kconfig" !! 533 depends on SPARC64
>> 534 default y
>> 535 select COMPAT_BINFMT_ELF
>> 536 select HAVE_UID16
>> 537 select ARCH_WANT_OLD_COMPAT_IPC
>> 538 select COMPAT_OLD_SIGACTION
722 539
723 endmenu !! 540 config SYSVIPC_COMPAT
>> 541 bool
>> 542 depends on COMPAT && SYSVIPC
>> 543 default y
724 544
725 source "arch/loongarch/kvm/Kconfig" !! 545 source "drivers/sbus/char/Kconfig"
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