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_HAS_SYNC_DMA_FOR_CPU
>> 53 select GENERIC_ATOMIC64
>> 54 select CLZ_TAB
>> 55 select HAVE_UID16
>> 56 select OLD_SIGACTION
>> 57
>> 58 config SPARC64
>> 59 def_bool 64BIT
>> 60 select HAVE_FUNCTION_TRACER
>> 61 select HAVE_FUNCTION_GRAPH_TRACER
>> 62 select HAVE_KRETPROBES
>> 63 select HAVE_KPROBES
>> 64 select HAVE_RCU_TABLE_FREE if SMP
>> 65 select HAVE_MEMBLOCK_NODE_MAP
119 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 66 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 67 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 68 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 69 select HAVE_SYSCALL_TRACEPOINTS
170 select HAVE_TIF_NOHZ !! 70 select HAVE_CONTEXT_TRACKING
171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if !! 71 select HAVE_DEBUG_KMEMLEAK
172 select IRQ_FORCED_THREADING !! 72 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 73 select SPARSE_IRQ
190 select SYSCTL_ARCH_UNALIGN_ALLOW !! 74 select RTC_DRV_CMOS
191 select SYSCTL_ARCH_UNALIGN_NO_WARN !! 75 select RTC_DRV_BQ4802
192 select SYSCTL_EXCEPTION_TRACE !! 76 select RTC_DRV_SUN4V
193 select SWIOTLB !! 77 select RTC_DRV_STARFIRE
194 select TRACE_IRQFLAGS_SUPPORT !! 78 select HAVE_PERF_EVENTS
195 select USE_PERCPU_NUMA_NODE_ID !! 79 select PERF_USE_VMALLOC
196 select USER_STACKTRACE_SUPPORT !! 80 select IRQ_PREFLOW_FASTEOI
197 select VDSO_GETRANDOM !! 81 select ARCH_HAVE_NMI_SAFE_CMPXCHG
198 select ZONE_DMA32 !! 82 select HAVE_C_RECORDMCOUNT
199 !! 83 select HAVE_ARCH_AUDITSYSCALL
200 config 32BIT !! 84 select ARCH_SUPPORTS_ATOMIC_RMW
201 bool !! 85 select HAVE_NMI
202 !! 86 select HAVE_REGS_AND_STACK_ACCESS_API
203 config 64BIT !! 87 select ARCH_USE_QUEUED_RWLOCKS
204 def_bool y !! 88 select ARCH_USE_QUEUED_SPINLOCKS
205 !! 89 select GENERIC_TIME_VSYSCALL
206 config GENERIC_BUG !! 90 select ARCH_CLOCKSOURCE_DATA
207 def_bool y !! 91 select ARCH_HAS_PTE_SPECIAL
208 depends on BUG !! 92 select PCI_DOMAINS if PCI
209 93
210 config GENERIC_BUG_RELATIVE_POINTERS !! 94 config ARCH_DEFCONFIG
211 def_bool y !! 95 string
212 depends on GENERIC_BUG !! 96 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 97 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
213 98
214 config GENERIC_CALIBRATE_DELAY !! 99 config ARCH_PROC_KCORE_TEXT
215 def_bool y 100 def_bool y
216 101
217 config GENERIC_CSUM !! 102 config CPU_BIG_ENDIAN
218 def_bool y 103 def_bool y
219 104
220 config GENERIC_HWEIGHT !! 105 config ARCH_ATU
221 def_bool y !! 106 bool
>> 107 default y if SPARC64
222 108
223 config L1_CACHE_SHIFT !! 109 config STACKTRACE_SUPPORT
224 int !! 110 bool
225 default "6" !! 111 default y if SPARC64
226 112
227 config LOCKDEP_SUPPORT 113 config LOCKDEP_SUPPORT
228 bool 114 bool
229 default y !! 115 default y if SPARC64
230 116
231 config STACKTRACE_SUPPORT !! 117 config ARCH_HIBERNATION_POSSIBLE
>> 118 def_bool y if SPARC64
>> 119
>> 120 config AUDIT_ARCH
232 bool 121 bool
233 default y 122 default y
234 123
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli !! 124 config HAVE_SETUP_PER_CPU_AREA
236 # MIPS Loongson code, to preserve Loongson-spe !! 125 def_bool y if SPARC64
237 # are shared between architectures, and specif <<
238 config MACH_LOONGSON32 <<
239 def_bool 32BIT <<
240 126
241 config MACH_LOONGSON64 !! 127 config NEED_PER_CPU_EMBED_FIRST_CHUNK
242 def_bool 64BIT !! 128 def_bool y if SPARC64
243 129
244 config FIX_EARLYCON_MEM !! 130 config NEED_PER_CPU_PAGE_FIRST_CHUNK
245 def_bool y !! 131 def_bool y if SPARC64
246 132
247 config PGTABLE_2LEVEL !! 133 config MMU
248 bool 134 bool
>> 135 default y
249 136
250 config PGTABLE_3LEVEL !! 137 config HIGHMEM
251 bool 138 bool
>> 139 default y if SPARC32
252 140
253 config PGTABLE_4LEVEL !! 141 config ZONE_DMA
254 bool 142 bool
>> 143 default y if SPARC32
255 144
256 config PGTABLE_LEVELS !! 145 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 146 bool
264 default y !! 147 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 <<
271 148
272 config AS_HAS_THIN_ADD_SUB !! 149 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
273 def_bool $(cc-option,-Wa$(comma)-mthin !! 150 def_bool y if SPARC64
274 151
275 config AS_HAS_LSX_EXTENSION !! 152 config PGTABLE_LEVELS
276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 153 default 4 if 64BIT
277 !! 154 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 <<
283 155
284 config AS_HAS_LVZ_EXTENSION !! 156 config ARCH_SUPPORTS_UPROBES
285 def_bool $(as-instr,hvcl 0) !! 157 def_bool y if SPARC64
286 158
287 menu "Kernel type and options" !! 159 menu "Processor type and features"
288 160
289 source "kernel/Kconfig.hz" !! 161 config SMP
>> 162 bool "Symmetric multi-processing support"
>> 163 ---help---
>> 164 This enables support for systems with more than one CPU. If you have
>> 165 a system with only one CPU, say N. If you have a system with more
>> 166 than one CPU, say Y.
290 167
291 choice !! 168 If you say N here, the kernel will run on uni- and multiprocessor
292 prompt "Page Table Layout" !! 169 machines, but will use only one CPU of a multiprocessor machine. If
293 default 16KB_2LEVEL if 32BIT !! 170 you say Y here, the kernel will run on many, but not all,
294 default 16KB_3LEVEL if 64BIT !! 171 uniprocessor machines. On a uniprocessor machine, the kernel
295 help !! 172 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 <<
347 173
348 endchoice !! 174 People using multiprocessor machines who say Y here should also say
>> 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 176 Management" code will be disabled if you say Y here.
349 177
350 config CMDLINE !! 178 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
351 string "Built-in kernel command line" !! 179 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 <<
357 180
358 When that occurs, it is possible to !! 181 If you don't know what to do here, say N.
359 line here and choose how the kernel <<
360 182
361 choice !! 183 config NR_CPUS
362 prompt "Kernel command line type" !! 184 int "Maximum number of CPUs"
363 default CMDLINE_BOOTLOADER !! 185 depends on SMP
364 help !! 186 range 2 32 if SPARC32
365 Choose how the kernel will handle th !! 187 range 2 4096 if SPARC64
366 line. !! 188 default 32 if SPARC32
>> 189 default 4096 if SPARC64
367 190
368 config CMDLINE_BOOTLOADER !! 191 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 <<
374 192
375 config CMDLINE_EXTEND !! 193 config RWSEM_GENERIC_SPINLOCK
376 bool "Use built-in to extend bootloade !! 194 bool
377 help !! 195 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 <<
382 196
383 config CMDLINE_FORCE !! 197 config RWSEM_XCHGADD_ALGORITHM
384 bool "Always use the built-in kernel c !! 198 bool
385 help !! 199 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. <<
390 200
391 endchoice !! 201 config GENERIC_HWEIGHT
>> 202 bool
>> 203 default y
392 204
393 config BUILTIN_DTB !! 205 config GENERIC_CALIBRATE_DELAY
394 bool "Enable built-in dtb in kernel" !! 206 bool
395 depends on OF !! 207 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 <<
400 208
401 Built-in DTBs are generic enough and !! 209 config ARCH_MAY_HAVE_PC_FDC
>> 210 bool
>> 211 default y
402 212
403 config BUILTIN_DTB_NAME !! 213 config EMULATED_CMPXCHG
404 string "Source file for built-in dtb" !! 214 bool
405 depends on BUILTIN_DTB !! 215 default y if SPARC32
406 help 216 help
407 Base name (without suffix, relative !! 217 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
408 for the DTS file that will be used t !! 218 is emulated, and therefore it is not completely atomic.
409 the kernel. <<
410 219
411 config DMI !! 220 # Makefile helpers
412 bool "Enable DMI scanning" !! 221 config SPARC32_SMP
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA !! 222 bool
414 default y 223 default y
415 help !! 224 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 <<
426 225
427 config EFI_STUB !! 226 config SPARC64_SMP
428 bool "EFI boot stub support" !! 227 bool
429 default y 228 default y
430 depends on EFI !! 229 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 <<
435 230
436 config SCHED_SMT !! 231 config EARLYFB
437 bool "SMT scheduler support" !! 232 bool "Support for early boot text console"
438 depends on SMP <<
439 default y 233 default y
>> 234 depends on SPARC64
440 help 235 help
441 Improves scheduler's performance whe !! 236 Say Y here to enable a faster early framebuffer boot console.
442 threads in one physical core. <<
443 237
444 config SMP !! 238 config SECCOMP
445 bool "Multi-Processing support" !! 239 bool "Enable seccomp to safely compute untrusted bytecode"
>> 240 depends on SPARC64 && PROC_FS
>> 241 default y
446 help 242 help
447 This enables support for systems wit !! 243 This kernel feature is useful for number crunching applications
448 a system with only one CPU, say N. I !! 244 that may need to compute untrusted bytecode during their
449 than one CPU, say Y. !! 245 execution. By using pipes or other transports made available to
450 !! 246 the process as file descriptors supporting the read/write
451 If you say N here, the kernel will r !! 247 syscalls, it's possible to isolate those applications in
452 machines, but will use only one CPU !! 248 their own address space using seccomp. Once seccomp is
453 you say Y here, the kernel will run !! 249 enabled via /proc/<pid>/seccomp, it cannot be disabled
454 uniprocessor machines. On a uniproce !! 250 and the task is only allowed to execute a few safe syscalls
455 will run faster if you say N here. !! 251 defined by each seccomp mode.
456 <<
457 See also the SMP-HOWTO available at <<
458 252
459 If you don't know what to do here, s !! 253 If unsure, say Y. Only embedded should say N here.
460 254
461 config HOTPLUG_CPU 255 config HOTPLUG_CPU
462 bool "Support for hot-pluggable CPUs" 256 bool "Support for hot-pluggable CPUs"
463 depends on SMP !! 257 depends on SPARC64 && SMP
464 select GENERIC_IRQ_MIGRATION <<
465 help 258 help
466 Say Y here to allow turning CPUs off !! 259 Say Y here to experiment with turning CPUs off and on. CPUs
467 controlled through /sys/devices/syst !! 260 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 261 Say N if you want to disable CPU hotplug.
471 262
472 config NR_CPUS !! 263 if SPARC64
473 int "Maximum number of CPUs (2-256)" !! 264 source "drivers/cpufreq/Kconfig"
474 range 2 256 !! 265 endif
475 depends on SMP !! 266
476 default "64" !! 267 config US3_MC
>> 268 tristate "UltraSPARC-III Memory Controller driver"
>> 269 depends on SPARC64
>> 270 default y
477 help 271 help
478 This allows you to specify the maxim !! 272 This adds a driver for the UltraSPARC-III memory controller.
479 kernel will support. !! 273 Loading this driver allows exact mnemonic strings to be
>> 274 printed in the event of a memory error, so that the faulty DIMM
>> 275 on the motherboard can be matched to the error.
>> 276
>> 277 If in doubt, say Y, as this information can be very useful.
>> 278
>> 279 # Global things across all Sun machines.
>> 280 config GENERIC_LOCKBREAK
>> 281 bool
>> 282 default y
>> 283 depends on SPARC64 && SMP && PREEMPT
480 284
481 config NUMA 285 config NUMA
482 bool "NUMA Support" !! 286 bool "NUMA support"
483 select SMP !! 287 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. <<
489 288
490 config NODES_SHIFT 289 config NODES_SHIFT
491 int !! 290 int "Maximum NUMA Nodes (as a power of 2)"
492 default "6" !! 291 range 4 5 if SPARC64
493 depends on NUMA !! 292 default "5"
>> 293 depends on NEED_MULTIPLE_NODES
>> 294 help
>> 295 Specify the maximum number of NUMA Nodes available on the target
>> 296 system. Increases memory reserved to accommodate various tables.
>> 297
>> 298 # Some NUMA nodes have memory ranges that span
>> 299 # other nodes. Even though a pfn is valid and
>> 300 # between a node's start and end pfns, it may not
>> 301 # reside on that node. See memmap_init_zone()
>> 302 # for details.
>> 303 config NODES_SPAN_OTHER_NODES
>> 304 def_bool y
>> 305 depends on NEED_MULTIPLE_NODES
>> 306
>> 307 config ARCH_SELECT_MEMORY_MODEL
>> 308 def_bool y if SPARC64
>> 309
>> 310 config ARCH_SPARSEMEM_ENABLE
>> 311 def_bool y if SPARC64
>> 312 select SPARSEMEM_VMEMMAP_ENABLE
>> 313
>> 314 config ARCH_SPARSEMEM_DEFAULT
>> 315 def_bool y if SPARC64
494 316
495 config ARCH_FORCE_MAX_ORDER !! 317 config FORCE_MAX_ZONEORDER
496 int "Maximum zone order" 318 int "Maximum zone order"
497 default "13" if PAGE_SIZE_64KB !! 319 default "13"
498 default "11" if PAGE_SIZE_16KB <<
499 default "10" <<
500 help 320 help
501 The kernel memory allocator divides 321 The kernel memory allocator divides physically contiguous memory
502 blocks into "zones", where each zone 322 blocks into "zones", where each zone is a power of two number of
503 pages. This option selects the larg 323 pages. This option selects the largest power of two that the kernel
504 keeps in the memory allocator. If y 324 keeps in the memory allocator. If you need to allocate very large
505 blocks of physically contiguous memo 325 blocks of physically contiguous memory, then you may need to
506 increase this value. 326 increase this value.
507 327
508 The page size is not necessarily 4KB !! 328 This config option is actually maximum order plus one. For example,
509 when choosing a value for this optio !! 329 a value of 13 means that the largest free memory block is 2^12 pages.
510 330
511 config ARCH_IOREMAP !! 331 if SPARC64
512 bool "Enable LoongArch DMW-based iorem !! 332 source "kernel/power/Kconfig"
513 help !! 333 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 <<
533 334
534 config ARCH_STRICT_ALIGN !! 335 config SCHED_SMT
535 bool "Enable -mstrict-align to prevent !! 336 bool "SMT (Hyperthreading) scheduler support"
>> 337 depends on SPARC64 && SMP
536 default y 338 default y
537 help 339 help
538 Not all LoongArch cores support h/w !! 340 SMT scheduler support improves the CPU scheduler's decision making
539 -mstrict-align build parameter to pr !! 341 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 342 in some places. If unsure say N here.
540 343
541 CPUs with h/w unaligned access suppo !! 344 config SCHED_MC
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 345 bool "Multi-core scheduler support"
543 !! 346 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 347 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 348 help
560 Loongson SIMD Extension (LSX) introd !! 349 Multi-core scheduler support improves the CPU scheduler's decision
561 and a set of SIMD instructions to op !! 350 making when dealing with multi-core CPU chips at a cost of slightly
562 is enabled the kernel will support a !! 351 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 <<
567 352
568 If unsure, say Y. !! 353 config CMDLINE_BOOL
>> 354 bool "Default bootloader kernel arguments"
>> 355 depends on SPARC64
569 356
570 config CPU_HAS_LASX !! 357 config CMDLINE
571 bool "Support for the Loongson Advance !! 358 string "Initial kernel command string"
572 depends on CPU_HAS_LSX !! 359 depends on CMDLINE_BOOL
573 depends on AS_HAS_LASX_EXTENSION !! 360 default "console=ttyS0,9600 root=/dev/sda1"
574 help !! 361 help
575 Loongson Advanced SIMD Extension (LA !! 362 Say Y here if you want to be able to pass default arguments to
576 registers and a set of SIMD instruct !! 363 the kernel. This will be overridden by the bootloader, if you
577 option is enabled the kernel will su !! 364 use one (such as SILO). This is most useful if you want to boot
578 vector register contexts. If you kno !! 365 a kernel from TFTP, and want default options to be available
579 running on CPUs which do not support !! 366 with having them passed on the command line.
580 not be making use of it then you may !! 367
581 the size & complexity of your kernel !! 368 NOTE: This option WILL override the PROM bootargs setting!
>> 369
>> 370 config SUN_PM
>> 371 bool
>> 372 default y if SPARC32
>> 373 help
>> 374 Enable power management and CPU standby features on supported
>> 375 SPARC platforms.
>> 376
>> 377 config SPARC_LED
>> 378 tristate "Sun4m LED driver"
>> 379 depends on SPARC32
>> 380 help
>> 381 This driver toggles the front-panel LED on sun4m systems
>> 382 in a user-specifiable manner. Its state can be probed
>> 383 by reading /proc/led and its blinking mode can be changed
>> 384 via writes to /proc/led
>> 385
>> 386 config SERIAL_CONSOLE
>> 387 bool
>> 388 depends on SPARC32
>> 389 default y
>> 390 ---help---
>> 391 If you say Y here, it will be possible to use a serial port as the
>> 392 system console (the system console is the device which receives all
>> 393 kernel messages and warnings and which allows logins in single user
>> 394 mode). This could be useful if some terminal or printer is connected
>> 395 to that serial port.
>> 396
>> 397 Even if you say Y here, the currently visible virtual console
>> 398 (/dev/tty0) will still be used as the system console by default, but
>> 399 you can alter that using a kernel command line option such as
>> 400 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 401 your boot loader (silo) about how to pass options to the kernel at
>> 402 boot time.)
>> 403
>> 404 If you don't have a graphics card installed and you say Y here, the
>> 405 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 406 system console.
>> 407
>> 408 If unsure, say N.
>> 409
>> 410 config SPARC_LEON
>> 411 bool "Sparc Leon processor family"
>> 412 depends on SPARC32
>> 413 select USB_EHCI_BIG_ENDIAN_MMIO
>> 414 select USB_EHCI_BIG_ENDIAN_DESC
>> 415 select USB_UHCI_BIG_ENDIAN_MMIO
>> 416 select USB_UHCI_BIG_ENDIAN_DESC
>> 417 ---help---
>> 418 If you say Y here if you are running on a SPARC-LEON processor.
>> 419 The LEON processor is a synthesizable VHDL model of the
>> 420 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 421 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 422 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 423 toolchain at www.gaisler.com.
>> 424
>> 425 if SPARC_LEON
>> 426 menu "U-Boot options"
>> 427
>> 428 config UBOOT_LOAD_ADDR
>> 429 hex "uImage Load Address"
>> 430 default 0x40004000
>> 431 ---help---
>> 432 U-Boot kernel load address, the address in physical address space
>> 433 where u-boot will place the Linux kernel before booting it.
>> 434 This address is normally the base address of main memory + 0x4000.
>> 435
>> 436 config UBOOT_FLASH_ADDR
>> 437 hex "uImage.o Load Address"
>> 438 default 0x00080000
>> 439 ---help---
>> 440 Optional setting only affecting the uImage.o ELF-image used to
>> 441 download the uImage file to the target using a ELF-loader other than
>> 442 U-Boot. It may for example be used to download an uImage to FLASH with
>> 443 the GRMON utility before even starting u-boot.
>> 444
>> 445 config UBOOT_ENTRY_ADDR
>> 446 hex "uImage Entry Address"
>> 447 default 0xf0004000
>> 448 ---help---
>> 449 Do not change this unless you know what you're doing. This is
>> 450 hardcoded by the SPARC32 and LEON port.
582 451
583 If unsure, say Y. !! 452 This is the virtual address u-boot jumps to when booting the Linux
>> 453 Kernel.
584 454
585 config CPU_HAS_LBT !! 455 endmenu
586 bool "Support for the Loongson Binary !! 456 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. <<
593 457
594 If you want to use this feature, suc !! 458 endmenu
595 Translator (LAT), say Y. <<
596 459
597 config CPU_HAS_PREFETCH !! 460 menu "Bus options (PCI etc.)"
>> 461 config SBUS
598 bool 462 bool
599 default y 463 default y
600 464
601 config ARCH_SUPPORTS_KEXEC !! 465 config SBUSCHAR
602 def_bool y !! 466 bool
603 !! 467 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. <<
623 468
624 config RANDOMIZE_BASE !! 469 config SUN_LDOMS
625 bool "Randomize the address of the ker !! 470 bool "Sun Logical Domains support"
626 depends on RELOCATABLE !! 471 depends on SPARC64
627 help 472 help
628 Randomizes the physical and virtual !! 473 Say Y here is you want to support virtual devices via
629 kernel image is loaded, as a securi !! 474 Logical Domains.
630 deters exploit attempts relying on <<
631 of kernel internals. <<
632 475
633 The kernel will be offset by up to !! 476 config PCIC_PCI
>> 477 bool
>> 478 depends on PCI && SPARC32 && !SPARC_LEON
>> 479 default y
634 480
635 If unsure, say N. !! 481 config LEON_PCI
>> 482 bool
>> 483 depends on PCI && SPARC_LEON
>> 484 default y
636 485
637 config RANDOMIZE_BASE_MAX_OFFSET !! 486 config SPARC_GRPCI1
638 hex "Maximum KASLR offset" if EXPERT !! 487 bool "GRPCI Host Bridge Support"
639 depends on RANDOMIZE_BASE !! 488 depends on LEON_PCI
640 range 0x0 0x10000000 !! 489 default y
641 default "0x01000000" <<
642 help 490 help
643 When KASLR is active, this provides !! 491 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
644 be applied to the kernel image. It s !! 492 PCI host controller is typically found in GRLIB SPARC32/LEON
645 amount of physical RAM available in !! 493 systems. The driver has one property (all_pci_errors) controlled
>> 494 from the bootloader that makes the GRPCI to generate interrupts
>> 495 on detected PCI Parity and System errors.
646 496
647 This is limited by the size of the l !! 497 config SPARC_GRPCI2
648 !! 498 bool "GRPCI2 Host Bridge Support"
649 source "kernel/livepatch/Kconfig" !! 499 depends on LEON_PCI
650 !! 500 default y
651 config PARAVIRT <<
652 bool "Enable paravirtualization code" <<
653 depends on AS_HAS_LVZ_EXTENSION <<
654 help 501 help
655 This changes the kernel so it can mo !! 502 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 <<
659 503
660 config PARAVIRT_TIME_ACCOUNTING !! 504 config SUN_OPENPROMFS
661 bool "Paravirtual steal time accountin !! 505 tristate "Openprom tree appears in /proc/openprom"
662 depends on PARAVIRT <<
663 help 506 help
664 Select this option to enable fine gr !! 507 If you say Y, the OpenPROM device tree will be available as a
665 accounting. Time spent executing oth !! 508 virtual file system, which you can mount to /proc/openprom by "mount
666 the current vCPU is discounted from !! 509 -t openpromfs none /proc/openprom".
667 that, there can be a small performan <<
668 510
669 If in doubt, say N here. !! 511 To compile the /proc/openprom support as a module, choose M here: the
>> 512 module will be called openpromfs.
670 513
671 endmenu !! 514 Only choose N if you know in advance that you will not need to modify
672 !! 515 OpenPROM settings on the running system.
673 config ARCH_SELECT_MEMORY_MODEL <<
674 def_bool y <<
675 516
676 config ARCH_FLATMEM_ENABLE !! 517 # Makefile helpers
677 def_bool y !! 518 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 519 bool
695 default y 520 default y
>> 521 depends on SPARC64 && PCI
696 522
697 config ARCH_MMAP_RND_BITS_MIN !! 523 config SPARC64_PCI_MSI
698 default 12 !! 524 bool
699 !! 525 default y
700 config ARCH_MMAP_RND_BITS_MAX !! 526 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 <<
715 527
716 config ARCH_HIBERNATION_POSSIBLE !! 528 endmenu
717 def_bool y <<
718 529
719 source "kernel/power/Kconfig" !! 530 config COMPAT
720 source "drivers/acpi/Kconfig" !! 531 bool
721 source "drivers/cpufreq/Kconfig" !! 532 depends on SPARC64
>> 533 default y
>> 534 select COMPAT_BINFMT_ELF
>> 535 select HAVE_UID16
>> 536 select ARCH_WANT_OLD_COMPAT_IPC
>> 537 select COMPAT_OLD_SIGACTION
722 538
723 endmenu !! 539 config SYSVIPC_COMPAT
>> 540 bool
>> 541 depends on COMPAT && SYSVIPC
>> 542 default y
724 543
725 source "arch/loongarch/kvm/Kconfig" !! 544 source "drivers/sbus/char/Kconfig"
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