1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 config LOONGARCH !! 2 config M68K
3 bool 3 bool
4 default y 4 default y
5 select ACPI !! 5 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
6 select ACPI_GENERIC_GSI if ACPI !! 6 select ARCH_NO_COHERENT_DMA_MMAP if !MMU
7 select ACPI_MCFG if ACPI !! 7 select HAVE_IDE
8 select ACPI_HOTPLUG_CPU if ACPI_PROCES !! 8 select HAVE_AOUT if MMU
9 select ACPI_PPTT if ACPI !! 9 select HAVE_DEBUG_BUGVERBOSE
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 <<
60 select ARCH_SPARSEMEM_ENABLE <<
61 select ARCH_STACKWALK <<
62 select ARCH_SUPPORTS_ACPI <<
63 select ARCH_SUPPORTS_ATOMIC_RMW <<
64 select ARCH_SUPPORTS_HUGETLBFS <<
65 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
66 select ARCH_SUPPORTS_LTO_CLANG <<
67 select ARCH_SUPPORTS_LTO_CLANG_THIN <<
68 select ARCH_SUPPORTS_NUMA_BALANCING <<
69 select ARCH_USE_BUILTIN_BSWAP <<
70 select ARCH_USE_CMPXCHG_LOCKREF <<
71 select ARCH_USE_QUEUED_RWLOCKS <<
72 select ARCH_USE_QUEUED_SPINLOCKS <<
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 10 select GENERIC_IRQ_SHOW
95 select GENERIC_LIB_ASHLDI3 !! 11 select GENERIC_ATOMIC64
96 select GENERIC_LIB_ASHRDI3 !! 12 select HAVE_UID16
97 select GENERIC_LIB_CMPDI2 !! 13 select VIRT_TO_BUS
98 select GENERIC_LIB_LSHRDI3 !! 14 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
99 select GENERIC_LIB_UCMPDI2 !! 15 select GENERIC_CPU_DEVICES
100 select GENERIC_LIB_DEVMEM_IS_ALLOWED !! 16 select GENERIC_IOMAP
101 select GENERIC_PCI_IOMAP !! 17 select GENERIC_STRNCPY_FROM_USER if MMU
102 select GENERIC_SCHED_CLOCK !! 18 select GENERIC_STRNLEN_USER if MMU
103 select GENERIC_SMP_IDLE_THREAD !! 19 select ARCH_WANT_IPC_PARSE_VERSION
104 select GENERIC_TIME_VSYSCALL !! 20 select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE
105 select GENERIC_VDSO_TIME_NS !! 21 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
106 select GPIOLIB <<
107 select HAS_IOPORT <<
108 select HAVE_ARCH_AUDITSYSCALL <<
109 select HAVE_ARCH_JUMP_LABEL <<
110 select HAVE_ARCH_JUMP_LABEL_RELATIVE <<
111 select HAVE_ARCH_KASAN <<
112 select HAVE_ARCH_KFENCE <<
113 select HAVE_ARCH_KGDB if PERF_EVENTS <<
114 select HAVE_ARCH_MMAP_RND_BITS if MMU <<
115 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
116 select HAVE_ARCH_SECCOMP <<
117 select HAVE_ARCH_SECCOMP_FILTER <<
118 select HAVE_ARCH_TRACEHOOK <<
119 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 <<
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 <<
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 22 select HAVE_MOD_ARCH_SPECIFIC
152 select HAVE_NMI !! 23 select MODULES_USE_ELF_REL
153 select HAVE_OBJTOOL if AS_HAS_EXPLICIT !! 24 select MODULES_USE_ELF_RELA
154 select HAVE_PCI !! 25 select OLD_SIGSUSPEND3
155 select HAVE_PERF_EVENTS !! 26 select OLD_SIGACTION
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 <<
170 select HAVE_TIF_NOHZ <<
171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if <<
172 select IRQ_FORCED_THREADING <<
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 <<
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 27
210 config GENERIC_BUG_RELATIVE_POINTERS !! 28 config CPU_BIG_ENDIAN
211 def_bool y 29 def_bool y
212 depends on GENERIC_BUG <<
213 30
214 config GENERIC_CALIBRATE_DELAY !! 31 config RWSEM_GENERIC_SPINLOCK
215 def_bool y <<
216 <<
217 config GENERIC_CSUM <<
218 def_bool y <<
219 <<
220 config GENERIC_HWEIGHT <<
221 def_bool y <<
222 <<
223 config L1_CACHE_SHIFT <<
224 int <<
225 default "6" <<
226 <<
227 config LOCKDEP_SUPPORT <<
228 bool 32 bool
229 default y 33 default y
230 34
231 config STACKTRACE_SUPPORT !! 35 config RWSEM_XCHGADD_ALGORITHM
232 bool 36 bool
233 default y <<
234 <<
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli <<
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 37
247 config PGTABLE_2LEVEL !! 38 config ARCH_HAS_ILOG2_U32
248 bool 39 bool
249 40
250 config PGTABLE_3LEVEL !! 41 config ARCH_HAS_ILOG2_U64
251 bool 42 bool
252 43
253 config PGTABLE_4LEVEL !! 44 config GENERIC_HWEIGHT
254 bool 45 bool
>> 46 default y
255 47
256 config PGTABLE_LEVELS !! 48 config GENERIC_CALIBRATE_DELAY
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 49 bool
264 default y 50 default y
265 51
266 config AS_HAS_EXPLICIT_RELOCS !! 52 config GENERIC_CSUM
267 def_bool $(as-instr,x:pcalau12i \$t0$( !! 53 bool
268 <<
269 config AS_HAS_FCSR_CLASS <<
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 54
383 config CMDLINE_FORCE !! 55 config TIME_LOW_RES
384 bool "Always use the built-in kernel c !! 56 bool
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 <<
411 config DMI <<
412 bool "Enable DMI scanning" <<
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA <<
414 default y 57 default y
415 help <<
416 This enables SMBIOS/DMI feature for <<
417 DMI to identify machine quirks. <<
418 58
419 config EFI !! 59 config NO_IOPORT_MAP
420 bool "EFI runtime service support" !! 60 def_bool y
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 61
427 config EFI_STUB !! 62 config NO_DMA
428 bool "EFI boot stub support" !! 63 def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
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 64
436 config SCHED_SMT !! 65 config ZONE_DMA
437 bool "SMT scheduler support" !! 66 bool
438 depends on SMP <<
439 default y 67 default y
440 help <<
441 Improves scheduler's performance whe <<
442 threads in one physical core. <<
443 <<
444 config SMP <<
445 bool "Multi-Processing support" <<
446 help <<
447 This enables support for systems wit <<
448 a system with only one CPU, say N. I <<
449 than one CPU, say Y. <<
450 <<
451 If you say N here, the kernel will r <<
452 machines, but will use only one CPU <<
453 you say Y here, the kernel will run <<
454 uniprocessor machines. On a uniproce <<
455 will run faster if you say N here. <<
456 <<
457 See also the SMP-HOWTO available at <<
458 <<
459 If you don't know what to do here, s <<
460 <<
461 config HOTPLUG_CPU <<
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 <<
472 config NR_CPUS <<
473 int "Maximum number of CPUs (2-256)" <<
474 range 2 256 <<
475 depends on SMP <<
476 default "64" <<
477 help <<
478 This allows you to specify the maxim <<
479 kernel will support. <<
480 68
481 config NUMA !! 69 config 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 70 int
492 default "6" !! 71 default 1000 if CLEOPATRA
493 depends on NUMA !! 72 default 100
494 <<
495 config ARCH_FORCE_MAX_ORDER <<
496 int "Maximum zone order" <<
497 default "13" if PAGE_SIZE_64KB <<
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 73
508 The page size is not necessarily 4KB !! 74 config PGTABLE_LEVELS
509 when choosing a value for this optio !! 75 default 2 if SUN3 || COLDFIRE
510 !! 76 default 3
511 config ARCH_IOREMAP <<
512 bool "Enable LoongArch DMW-based iorem <<
513 help <<
514 We use generic TLB-based ioremap() b <<
515 protection support. However, you can <<
516 ioremap() for better performance. <<
517 77
518 config ARCH_WRITECOMBINE !! 78 source "init/Kconfig"
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 79
532 You can override this setting via wr !! 80 source "kernel/Kconfig.freezer"
533 81
534 config ARCH_STRICT_ALIGN !! 82 config MMU
535 bool "Enable -mstrict-align to prevent !! 83 bool "MMU-based Paged Memory Management Support"
536 default y 84 default y
537 help 85 help
538 Not all LoongArch cores support h/w !! 86 Select if you want MMU-based virtualised addressing space
539 -mstrict-align build parameter to pr !! 87 support by paged memory management. If unsure, say 'Y'.
540 <<
541 CPUs with h/w unaligned access suppo <<
542 Loongson-2K2000/2K3000/3A5000/3C5000 <<
543 88
544 CPUs without h/w unaligned access su !! 89 config MMU_MOTOROLA
545 Loongson-2K500/2K1000. !! 90 bool
546 91
547 This option is enabled by default to !! 92 config MMU_COLDFIRE
548 on all LoongArch systems. But you ca !! 93 bool
549 to run kernel only on systems with h <<
550 order to optimise for performance. <<
551 94
552 config CPU_HAS_FPU !! 95 config MMU_SUN3
553 bool 96 bool
554 default y !! 97 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
555 98
556 config CPU_HAS_LSX !! 99 config KEXEC
557 bool "Support for the Loongson SIMD Ex !! 100 bool "kexec system call"
558 depends on AS_HAS_LSX_EXTENSION !! 101 depends on M68KCLASSIC
559 help !! 102 select KEXEC_CORE
560 Loongson SIMD Extension (LSX) introd <<
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 <<
568 If unsure, say Y. <<
569 <<
570 config CPU_HAS_LASX <<
571 bool "Support for the Loongson Advance <<
572 depends on CPU_HAS_LSX <<
573 depends on AS_HAS_LASX_EXTENSION <<
574 help <<
575 Loongson Advanced SIMD Extension (LA <<
576 registers and a set of SIMD instruct <<
577 option is enabled the kernel will su <<
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 <<
583 If unsure, say Y. <<
584 <<
585 config CPU_HAS_LBT <<
586 bool "Support for the Loongson Binary <<
587 depends on AS_HAS_LBT_EXTENSION <<
588 help 103 help
589 Loongson Binary Translation (LBT) in !! 104 kexec is a system call that implements the ability to shutdown your
590 to SCR3), x86/ARM eflags (eflags) an !! 105 current kernel, and to start another kernel. It is like a reboot
591 Enabling this option allows the kern !! 106 but it is independent of the system firmware. And like a reboot
592 specific to LBT. !! 107 you can start any kernel with it, not just Linux.
593 108
594 If you want to use this feature, suc !! 109 The name comes from the similarity to the exec system call.
595 Translator (LAT), say Y. <<
596 110
597 config CPU_HAS_PREFETCH !! 111 It is an ongoing process to be certain the hardware in a machine
598 bool !! 112 is properly shutdown, so do not be surprised if this code does not
599 default y !! 113 initially work for you. As of this writing the exact hardware
>> 114 interface is strongly in flux, so no good recommendation can be
>> 115 made.
600 116
601 config ARCH_SUPPORTS_KEXEC !! 117 config BOOTINFO_PROC
602 def_bool y !! 118 bool "Export bootinfo in procfs"
>> 119 depends on KEXEC && M68KCLASSIC
>> 120 help
>> 121 Say Y to export the bootinfo used to boot the kernel in a
>> 122 "bootinfo" file in procfs. This is useful with kexec.
603 123
604 config ARCH_SUPPORTS_CRASH_DUMP !! 124 menu "Platform setup"
605 def_bool y <<
606 125
607 config ARCH_SELECTS_CRASH_DUMP !! 126 source arch/m68k/Kconfig.cpu
608 def_bool y <<
609 depends on CRASH_DUMP <<
610 select RELOCATABLE <<
611 127
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 128 source arch/m68k/Kconfig.machine
613 def_bool CRASH_RESERVE <<
614 129
615 config RELOCATABLE !! 130 source arch/m68k/Kconfig.bus
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 <<
624 config RANDOMIZE_BASE <<
625 bool "Randomize the address of the ker <<
626 depends on RELOCATABLE <<
627 help <<
628 Randomizes the physical and virtual <<
629 kernel image is loaded, as a securi <<
630 deters exploit attempts relying on <<
631 of kernel internals. <<
632 <<
633 The kernel will be offset by up to <<
634 <<
635 If unsure, say N. <<
636 <<
637 config RANDOMIZE_BASE_MAX_OFFSET <<
638 hex "Maximum KASLR offset" if EXPERT <<
639 depends on RANDOMIZE_BASE <<
640 range 0x0 0x10000000 <<
641 default "0x01000000" <<
642 help <<
643 When KASLR is active, this provides <<
644 be applied to the kernel image. It s <<
645 amount of physical RAM available in <<
646 131
647 This is limited by the size of the l !! 132 endmenu
648 133
649 source "kernel/livepatch/Kconfig" !! 134 menu "Kernel Features"
650 135
651 config PARAVIRT !! 136 if COLDFIRE
652 bool "Enable paravirtualization code" !! 137 source "kernel/Kconfig.preempt"
653 depends on AS_HAS_LVZ_EXTENSION !! 138 endif
654 help <<
655 This changes the kernel so it can mo <<
656 under a hypervisor, potentially impr <<
657 over full virtualization. However, <<
658 the kernel is theoretically slower a <<
659 <<
660 config PARAVIRT_TIME_ACCOUNTING <<
661 bool "Paravirtual steal time accountin <<
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 <<
668 139
669 If in doubt, say N here. !! 140 source "mm/Kconfig"
670 141
671 endmenu 142 endmenu
672 143
673 config ARCH_SELECT_MEMORY_MODEL !! 144 menu "Executable file formats"
674 def_bool y <<
675 <<
676 config ARCH_FLATMEM_ENABLE <<
677 def_bool y <<
678 depends on !NUMA <<
679 145
680 config ARCH_SPARSEMEM_ENABLE !! 146 source "fs/Kconfig.binfmt"
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> <<
688 147
689 config ARCH_MEMORY_PROBE !! 148 endmenu
690 def_bool y <<
691 depends on MEMORY_HOTPLUG <<
692 149
693 config MMU !! 150 if !MMU
694 bool !! 151 menu "Power management options"
695 default y <<
696 152
697 config ARCH_MMAP_RND_BITS_MIN !! 153 config PM
698 default 12 !! 154 bool "Power Management support"
>> 155 help
>> 156 Support processor power management modes
699 157
700 config ARCH_MMAP_RND_BITS_MAX !! 158 endmenu
701 default 18 !! 159 endif
702 160
703 config ARCH_SUPPORTS_UPROBES !! 161 source "net/Kconfig"
704 def_bool y <<
705 162
706 config KASAN_SHADOW_OFFSET !! 163 source "drivers/Kconfig"
707 hex <<
708 default 0x0 <<
709 depends on KASAN <<
710 164
711 menu "Power management options" !! 165 source "arch/m68k/Kconfig.devices"
712 166
713 config ARCH_SUSPEND_POSSIBLE !! 167 source "fs/Kconfig"
714 def_bool y <<
715 168
716 config ARCH_HIBERNATION_POSSIBLE !! 169 source "arch/m68k/Kconfig.debug"
717 def_bool y <<
718 170
719 source "kernel/power/Kconfig" !! 171 source "security/Kconfig"
720 source "drivers/acpi/Kconfig" <<
721 source "drivers/cpufreq/Kconfig" <<
722 172
723 endmenu !! 173 source "crypto/Kconfig"
724 174
725 source "arch/loongarch/kvm/Kconfig" !! 175 source "lib/Kconfig"
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