Commit | Line | Data |
---|---|---|
fa96b57c HC |
1 | # SPDX-License-Identifier: GPL-2.0 |
2 | config LOONGARCH | |
3 | bool | |
4 | default y | |
f30d1f49 | 5 | select ACPI |
cd057667 | 6 | select ACPI_GENERIC_GSI if ACPI |
57fc7323 | 7 | select ACPI_MCFG if ACPI |
fa96b57c HC |
8 | select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI |
9 | select ARCH_BINFMT_ELF_STATE | |
10 | select ARCH_ENABLE_MEMORY_HOTPLUG | |
11 | select ARCH_ENABLE_MEMORY_HOTREMOVE | |
12 | select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI | |
d4b6f156 | 13 | select ARCH_HAS_PHYS_TO_DMA |
fa96b57c HC |
14 | select ARCH_HAS_PTE_SPECIAL |
15 | select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST | |
16 | select ARCH_INLINE_READ_LOCK if !PREEMPTION | |
17 | select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION | |
18 | select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION | |
19 | select ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION | |
20 | select ARCH_INLINE_READ_UNLOCK if !PREEMPTION | |
21 | select ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION | |
22 | select ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION | |
23 | select ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION | |
24 | select ARCH_INLINE_WRITE_LOCK if !PREEMPTION | |
25 | select ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION | |
26 | select ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION | |
27 | select ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION | |
28 | select ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION | |
29 | select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION | |
30 | select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION | |
31 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION | |
32 | select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION | |
33 | select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION | |
34 | select ARCH_INLINE_SPIN_LOCK if !PREEMPTION | |
35 | select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION | |
36 | select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION | |
37 | select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION | |
38 | select ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION | |
39 | select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION | |
40 | select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION | |
41 | select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION | |
e0fba87c | 42 | select ARCH_KEEP_MEMBLOCK |
fa96b57c HC |
43 | select ARCH_MIGHT_HAVE_PC_PARPORT |
44 | select ARCH_MIGHT_HAVE_PC_SERIO | |
45 | select ARCH_SPARSEMEM_ENABLE | |
93a4fa62 | 46 | select ARCH_STACKWALK |
fa96b57c HC |
47 | select ARCH_SUPPORTS_ACPI |
48 | select ARCH_SUPPORTS_ATOMIC_RMW | |
49 | select ARCH_SUPPORTS_HUGETLBFS | |
d4b6f156 | 50 | select ARCH_SUPPORTS_NUMA_BALANCING |
fa96b57c HC |
51 | select ARCH_USE_BUILTIN_BSWAP |
52 | select ARCH_USE_CMPXCHG_LOCKREF | |
53 | select ARCH_USE_QUEUED_RWLOCKS | |
54 | select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT | |
1429cfde | 55 | select ARCH_WANT_LD_ORPHAN_WARN |
fa96b57c HC |
56 | select ARCH_WANTS_NO_INSTR |
57 | select BUILDTIME_TABLE_SORT | |
58 | select COMMON_CLK | |
f30d1f49 | 59 | select EFI |
fa96b57c HC |
60 | select GENERIC_CLOCKEVENTS |
61 | select GENERIC_CMOS_UPDATE | |
62 | select GENERIC_CPU_AUTOPROBE | |
63 | select GENERIC_ENTRY | |
fa96b57c HC |
64 | select GENERIC_GETTIMEOFDAY |
65 | select GENERIC_IRQ_MULTI_HANDLER | |
66 | select GENERIC_IRQ_PROBE | |
67 | select GENERIC_IRQ_SHOW | |
68 | select GENERIC_LIB_ASHLDI3 | |
69 | select GENERIC_LIB_ASHRDI3 | |
70 | select GENERIC_LIB_CMPDI2 | |
71 | select GENERIC_LIB_LSHRDI3 | |
72 | select GENERIC_LIB_UCMPDI2 | |
73 | select GENERIC_PCI_IOMAP | |
74 | select GENERIC_SCHED_CLOCK | |
46859ac8 | 75 | select GENERIC_SMP_IDLE_THREAD |
fa96b57c HC |
76 | select GENERIC_TIME_VSYSCALL |
77 | select GPIOLIB | |
78 | select HAVE_ARCH_AUDITSYSCALL | |
fa96b57c HC |
79 | select HAVE_ARCH_MMAP_RND_BITS if MMU |
80 | select HAVE_ARCH_SECCOMP_FILTER | |
81 | select HAVE_ARCH_TRACEHOOK | |
82 | select HAVE_ARCH_TRANSPARENT_HUGEPAGE | |
83 | select HAVE_ASM_MODVERSIONS | |
24a9c541 | 84 | select HAVE_CONTEXT_TRACKING_USER |
fa96b57c HC |
85 | select HAVE_DEBUG_STACKOVERFLOW |
86 | select HAVE_DMA_CONTIGUOUS | |
87 | select HAVE_EXIT_THREAD | |
88 | select HAVE_FAST_GUP | |
89 | select HAVE_GENERIC_VDSO | |
90 | select HAVE_IOREMAP_PROT | |
91 | select HAVE_IRQ_EXIT_ON_IRQ_STACK | |
92 | select HAVE_IRQ_TIME_ACCOUNTING | |
fa96b57c HC |
93 | select HAVE_MOD_ARCH_SPECIFIC |
94 | select HAVE_NMI | |
57fc7323 | 95 | select HAVE_PCI |
fa96b57c HC |
96 | select HAVE_PERF_EVENTS |
97 | select HAVE_REGS_AND_STACK_ACCESS_API | |
98 | select HAVE_RSEQ | |
d4b6f156 | 99 | select HAVE_SETUP_PER_CPU_AREA if NUMA |
fa96b57c HC |
100 | select HAVE_SYSCALL_TRACEPOINTS |
101 | select HAVE_TIF_NOHZ | |
46859ac8 | 102 | select HAVE_VIRT_CPU_ACCOUNTING_GEN if !SMP |
fa96b57c HC |
103 | select IRQ_FORCED_THREADING |
104 | select IRQ_LOONGARCH_CPU | |
f30d1f49 | 105 | select MMU_GATHER_MERGE_VMAS if MMU |
fa96b57c | 106 | select MODULES_USE_ELF_RELA if MODULES |
d4b6f156 HC |
107 | select NEED_PER_CPU_EMBED_FIRST_CHUNK |
108 | select NEED_PER_CPU_PAGE_FIRST_CHUNK | |
fa96b57c HC |
109 | select OF |
110 | select OF_EARLY_FLATTREE | |
57fc7323 HC |
111 | select PCI |
112 | select PCI_DOMAINS_GENERIC | |
113 | select PCI_ECAM if ACPI | |
114 | select PCI_LOONGSON | |
115 | select PCI_MSI_ARCH_FALLBACKS | |
7c12bb8f | 116 | select PCI_QUIRKS |
fa96b57c HC |
117 | select PERF_USE_VMALLOC |
118 | select RTC_LIB | |
f30d1f49 | 119 | select SMP |
fa96b57c HC |
120 | select SPARSE_IRQ |
121 | select SYSCTL_EXCEPTION_TRACE | |
122 | select SWIOTLB | |
123 | select TRACE_IRQFLAGS_SUPPORT | |
d4b6f156 | 124 | select USE_PERCPU_NUMA_NODE_ID |
4d7bf939 | 125 | select USER_STACKTRACE_SUPPORT |
fa96b57c HC |
126 | select ZONE_DMA32 |
127 | ||
128 | config 32BIT | |
129 | bool | |
130 | ||
131 | config 64BIT | |
132 | def_bool y | |
133 | ||
134 | config CPU_HAS_FPU | |
135 | bool | |
136 | default y | |
137 | ||
138 | config CPU_HAS_PREFETCH | |
139 | bool | |
140 | default y | |
141 | ||
142 | config GENERIC_CALIBRATE_DELAY | |
143 | def_bool y | |
144 | ||
145 | config GENERIC_CSUM | |
146 | def_bool y | |
147 | ||
148 | config GENERIC_HWEIGHT | |
149 | def_bool y | |
150 | ||
151 | config L1_CACHE_SHIFT | |
152 | int | |
153 | default "6" | |
154 | ||
155 | config LOCKDEP_SUPPORT | |
156 | bool | |
93a4fa62 QZ |
157 | default y |
158 | ||
159 | config STACKTRACE_SUPPORT | |
160 | bool | |
fa96b57c HC |
161 | default y |
162 | ||
163 | # MACH_LOONGSON32 and MACH_LOONGSON64 are delibrately carried over from the | |
164 | # MIPS Loongson code, to preserve Loongson-specific code paths in drivers that | |
165 | # are shared between architectures, and specifically expecting the symbols. | |
166 | config MACH_LOONGSON32 | |
167 | def_bool 32BIT | |
168 | ||
169 | config MACH_LOONGSON64 | |
170 | def_bool 64BIT | |
171 | ||
172 | config PAGE_SIZE_4KB | |
173 | bool | |
174 | ||
175 | config PAGE_SIZE_16KB | |
176 | bool | |
177 | ||
178 | config PAGE_SIZE_64KB | |
179 | bool | |
180 | ||
181 | config PGTABLE_2LEVEL | |
182 | bool | |
183 | ||
184 | config PGTABLE_3LEVEL | |
185 | bool | |
186 | ||
187 | config PGTABLE_4LEVEL | |
188 | bool | |
189 | ||
190 | config PGTABLE_LEVELS | |
191 | int | |
192 | default 2 if PGTABLE_2LEVEL | |
193 | default 3 if PGTABLE_3LEVEL | |
194 | default 4 if PGTABLE_4LEVEL | |
195 | ||
196 | config SCHED_OMIT_FRAME_POINTER | |
197 | bool | |
198 | default y | |
199 | ||
200 | menu "Kernel type and options" | |
201 | ||
202 | source "kernel/Kconfig.hz" | |
203 | ||
204 | choice | |
205 | prompt "Page Table Layout" | |
206 | default 16KB_2LEVEL if 32BIT | |
207 | default 16KB_3LEVEL if 64BIT | |
208 | help | |
209 | Allows choosing the page table layout, which is a combination | |
210 | of page size and page table levels. The size of virtual memory | |
211 | address space are determined by the page table layout. | |
212 | ||
213 | config 4KB_3LEVEL | |
214 | bool "4KB with 3 levels" | |
215 | select PAGE_SIZE_4KB | |
216 | select PGTABLE_3LEVEL | |
217 | help | |
218 | This option selects 4KB page size with 3 level page tables, which | |
219 | support a maximum of 39 bits of application virtual memory. | |
220 | ||
221 | config 4KB_4LEVEL | |
222 | bool "4KB with 4 levels" | |
223 | select PAGE_SIZE_4KB | |
224 | select PGTABLE_4LEVEL | |
225 | help | |
226 | This option selects 4KB page size with 4 level page tables, which | |
227 | support a maximum of 48 bits of application virtual memory. | |
228 | ||
229 | config 16KB_2LEVEL | |
230 | bool "16KB with 2 levels" | |
231 | select PAGE_SIZE_16KB | |
232 | select PGTABLE_2LEVEL | |
233 | help | |
234 | This option selects 16KB page size with 2 level page tables, which | |
235 | support a maximum of 36 bits of application virtual memory. | |
236 | ||
237 | config 16KB_3LEVEL | |
238 | bool "16KB with 3 levels" | |
239 | select PAGE_SIZE_16KB | |
240 | select PGTABLE_3LEVEL | |
241 | help | |
242 | This option selects 16KB page size with 3 level page tables, which | |
243 | support a maximum of 47 bits of application virtual memory. | |
244 | ||
245 | config 64KB_2LEVEL | |
246 | bool "64KB with 2 levels" | |
247 | select PAGE_SIZE_64KB | |
248 | select PGTABLE_2LEVEL | |
249 | help | |
250 | This option selects 64KB page size with 2 level page tables, which | |
251 | support a maximum of 42 bits of application virtual memory. | |
252 | ||
253 | config 64KB_3LEVEL | |
254 | bool "64KB with 3 levels" | |
255 | select PAGE_SIZE_64KB | |
256 | select PGTABLE_3LEVEL | |
257 | help | |
258 | This option selects 64KB page size with 3 level page tables, which | |
259 | support a maximum of 55 bits of application virtual memory. | |
260 | ||
261 | endchoice | |
262 | ||
263 | config CMDLINE | |
264 | string "Built-in kernel command line" | |
265 | help | |
266 | For most platforms, the arguments for the kernel's command line | |
267 | are provided at run-time, during boot. However, there are cases | |
268 | where either no arguments are being provided or the provided | |
269 | arguments are insufficient or even invalid. | |
270 | ||
271 | When that occurs, it is possible to define a built-in command | |
272 | line here and choose how the kernel should use it later on. | |
273 | ||
274 | choice | |
275 | prompt "Kernel command line type" | |
276 | default CMDLINE_BOOTLOADER | |
277 | help | |
278 | Choose how the kernel will handle the provided built-in command | |
279 | line. | |
280 | ||
281 | config CMDLINE_BOOTLOADER | |
282 | bool "Use bootloader kernel arguments if available" | |
283 | help | |
284 | Prefer the command-line passed by the boot loader if available. | |
285 | Use the built-in command line as fallback in case we get nothing | |
286 | during boot. This is the default behaviour. | |
287 | ||
288 | config CMDLINE_EXTEND | |
289 | bool "Use built-in to extend bootloader kernel arguments" | |
290 | help | |
291 | The command-line arguments provided during boot will be | |
292 | appended to the built-in command line. This is useful in | |
293 | cases where the provided arguments are insufficient and | |
294 | you don't want to or cannot modify them. | |
295 | ||
296 | config CMDLINE_FORCE | |
297 | bool "Always use the built-in kernel command string" | |
298 | help | |
299 | Always use the built-in command line, even if we get one during | |
300 | boot. This is useful in case you need to override the provided | |
301 | command line on systems where you don't have or want control | |
302 | over it. | |
303 | ||
304 | endchoice | |
305 | ||
306 | config DMI | |
307 | bool "Enable DMI scanning" | |
308 | select DMI_SCAN_MACHINE_NON_EFI_FALLBACK | |
309 | default y | |
310 | help | |
311 | This enables SMBIOS/DMI feature for systems, and scanning of | |
312 | DMI to identify machine quirks. | |
313 | ||
314 | config EFI | |
315 | bool "EFI runtime service support" | |
316 | select UCS2_STRING | |
317 | select EFI_PARAMS_FROM_FDT | |
318 | select EFI_RUNTIME_WRAPPERS | |
319 | help | |
320 | This enables the kernel to use EFI runtime services that are | |
321 | available (such as the EFI variable services). | |
322 | ||
46859ac8 HC |
323 | config SMP |
324 | bool "Multi-Processing support" | |
325 | help | |
326 | This enables support for systems with more than one CPU. If you have | |
327 | a system with only one CPU, say N. If you have a system with more | |
328 | than one CPU, say Y. | |
329 | ||
330 | If you say N here, the kernel will run on uni- and multiprocessor | |
331 | machines, but will use only one CPU of a multiprocessor machine. If | |
332 | you say Y here, the kernel will run on many, but not all, | |
333 | uniprocessor machines. On a uniprocessor machine, the kernel | |
334 | will run faster if you say N here. | |
335 | ||
336 | See also the SMP-HOWTO available at <http://www.tldp.org/docs.html#howto>. | |
337 | ||
338 | If you don't know what to do here, say N. | |
339 | ||
340 | config HOTPLUG_CPU | |
341 | bool "Support for hot-pluggable CPUs" | |
342 | depends on SMP | |
343 | select GENERIC_IRQ_MIGRATION | |
344 | help | |
345 | Say Y here to allow turning CPUs off and on. CPUs can be | |
346 | controlled through /sys/devices/system/cpu. | |
347 | (Note: power management support will enable this option | |
348 | automatically on SMP systems. ) | |
349 | Say N if you want to disable CPU hotplug. | |
350 | ||
351 | config NR_CPUS | |
352 | int "Maximum number of CPUs (2-256)" | |
353 | range 2 256 | |
354 | depends on SMP | |
355 | default "64" | |
356 | help | |
357 | This allows you to specify the maximum number of CPUs which this | |
358 | kernel will support. | |
359 | ||
d4b6f156 HC |
360 | config NUMA |
361 | bool "NUMA Support" | |
255b4658 | 362 | select SMP |
d4b6f156 HC |
363 | select ACPI_NUMA if ACPI |
364 | help | |
365 | Say Y to compile the kernel with NUMA (Non-Uniform Memory Access) | |
366 | support. This option improves performance on systems with more | |
367 | than one NUMA node; on single node systems it is generally better | |
368 | to leave it disabled. | |
369 | ||
370 | config NODES_SHIFT | |
371 | int | |
372 | default "6" | |
373 | depends on NUMA | |
374 | ||
fa96b57c HC |
375 | config FORCE_MAX_ZONEORDER |
376 | int "Maximum zone order" | |
377 | range 14 64 if PAGE_SIZE_64KB | |
378 | default "14" if PAGE_SIZE_64KB | |
379 | range 12 64 if PAGE_SIZE_16KB | |
380 | default "12" if PAGE_SIZE_16KB | |
381 | range 11 64 | |
382 | default "11" | |
383 | help | |
384 | The kernel memory allocator divides physically contiguous memory | |
385 | blocks into "zones", where each zone is a power of two number of | |
386 | pages. This option selects the largest power of two that the kernel | |
387 | keeps in the memory allocator. If you need to allocate very large | |
388 | blocks of physically contiguous memory, then you may need to | |
389 | increase this value. | |
390 | ||
391 | This config option is actually maximum order plus one. For example, | |
392 | a value of 11 means that the largest free memory block is 2^10 pages. | |
393 | ||
394 | The page size is not necessarily 4KB. Keep this in mind | |
395 | when choosing a value for this option. | |
396 | ||
397 | config SECCOMP | |
398 | bool "Enable seccomp to safely compute untrusted bytecode" | |
399 | depends on PROC_FS | |
400 | default y | |
401 | help | |
402 | This kernel feature is useful for number crunching applications | |
403 | that may need to compute untrusted bytecode during their | |
404 | execution. By using pipes or other transports made available to | |
405 | the process as file descriptors supporting the read/write | |
406 | syscalls, it's possible to isolate those applications in | |
407 | their own address space using seccomp. Once seccomp is | |
408 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
409 | and the task is only allowed to execute a few safe syscalls | |
410 | defined by each seccomp mode. | |
411 | ||
412 | If unsure, say Y. Only embedded should say N here. | |
413 | ||
414 | endmenu | |
415 | ||
416 | config ARCH_SELECT_MEMORY_MODEL | |
417 | def_bool y | |
418 | ||
419 | config ARCH_FLATMEM_ENABLE | |
420 | def_bool y | |
d4b6f156 | 421 | depends on !NUMA |
fa96b57c HC |
422 | |
423 | config ARCH_SPARSEMEM_ENABLE | |
424 | def_bool y | |
425 | help | |
426 | Say Y to support efficient handling of sparse physical memory, | |
427 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
428 | or have huge holes in the physical address space for other reasons. | |
ee65728e | 429 | See <file:Documentation/mm/numa.rst> for more. |
fa96b57c HC |
430 | |
431 | config ARCH_ENABLE_THP_MIGRATION | |
432 | def_bool y | |
433 | depends on TRANSPARENT_HUGEPAGE | |
434 | ||
435 | config ARCH_MEMORY_PROBE | |
436 | def_bool y | |
437 | depends on MEMORY_HOTPLUG | |
438 | ||
439 | config MMU | |
440 | bool | |
441 | default y | |
442 | ||
443 | config ARCH_MMAP_RND_BITS_MIN | |
444 | default 12 | |
445 | ||
446 | config ARCH_MMAP_RND_BITS_MAX | |
447 | default 18 | |
448 | ||
449 | menu "Power management options" | |
450 | ||
451 | source "drivers/acpi/Kconfig" | |
452 | ||
453 | endmenu | |
454 | ||
455 | source "drivers/firmware/Kconfig" |