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