1 # SPDX-License-Identifier: GPL-2.0 !! 1 #
2 config LOONGARCH !! 2 # For a description of the syntax of this configuration file,
3 bool !! 3 # see Documentation/kbuild/kconfig-language.txt.
4 default y !! 4 #
5 select ACPI !! 5 config ALPHA
6 select ACPI_GENERIC_GSI if ACPI !! 6 bool
7 select ACPI_MCFG if ACPI !! 7 default y
8 select ACPI_HOTPLUG_CPU if ACPI_PROCES !! 8 select HAVE_AOUT
9 select ACPI_PPTT if ACPI !! 9 select HAVE_IDE
10 select ACPI_SYSTEM_POWER_STATES_SUPPOR !! 10 select HAVE_OPROFILE
11 select ARCH_BINFMT_ELF_STATE !! 11 select HAVE_SYSCALL_WRAPPERS
12 select ARCH_DISABLE_KASAN_INLINE !! 12 help
13 select ARCH_ENABLE_MEMORY_HOTPLUG !! 13 The Alpha is a 64-bit general-purpose processor designed and
14 select ARCH_ENABLE_MEMORY_HOTREMOVE !! 14 marketed by the Digital Equipment Corporation of blessed memory,
15 select ARCH_ENABLE_THP_MIGRATION if TR !! 15 now Hewlett-Packard. The Alpha Linux project has a home page at
16 select ARCH_HAS_ACPI_TABLE_UPGRADE !! 16 <http://www.alphalinux.org/>.
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 <<
95 select GENERIC_LIB_ASHLDI3 <<
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 <<
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 <<
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 <<
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 <<
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 17
203 config 64BIT 18 config 64BIT
204 def_bool y 19 def_bool y
205 20
206 config GENERIC_BUG !! 21 config MMU
207 def_bool y !! 22 bool
208 depends on BUG !! 23 default y
209 <<
210 config GENERIC_BUG_RELATIVE_POINTERS <<
211 def_bool y <<
212 depends on GENERIC_BUG <<
213 24
214 config GENERIC_CALIBRATE_DELAY !! 25 config RWSEM_GENERIC_SPINLOCK
215 def_bool y !! 26 bool
216 27
217 config GENERIC_CSUM !! 28 config RWSEM_XCHGADD_ALGORITHM
218 def_bool y !! 29 bool
>> 30 default y
219 31
220 config GENERIC_HWEIGHT !! 32 config ARCH_HAS_ILOG2_U32
221 def_bool y !! 33 bool
>> 34 default n
222 35
223 config L1_CACHE_SHIFT !! 36 config ARCH_HAS_ILOG2_U64
224 int !! 37 bool
225 default "6" !! 38 default n
226 39
227 config LOCKDEP_SUPPORT !! 40 config GENERIC_FIND_NEXT_BIT
228 bool 41 bool
229 default y 42 default y
230 43
231 config STACKTRACE_SUPPORT !! 44 config GENERIC_CALIBRATE_DELAY
232 bool 45 bool
233 default y 46 default y
234 47
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli !! 48 config GENERIC_TIME
236 # MIPS Loongson code, to preserve Loongson-spe !! 49 bool
237 # are shared between architectures, and specif !! 50 default y
238 config MACH_LOONGSON32 <<
239 def_bool 32BIT <<
240 <<
241 config MACH_LOONGSON64 <<
242 def_bool 64BIT <<
243 51
244 config FIX_EARLYCON_MEM !! 52 config ARCH_USES_GETTIMEOFFSET
245 def_bool y !! 53 bool
>> 54 default y
246 55
247 config PGTABLE_2LEVEL !! 56 config ZONE_DMA
248 bool 57 bool
>> 58 default y
249 59
250 config PGTABLE_3LEVEL !! 60 config GENERIC_ISA_DMA
251 bool 61 bool
>> 62 default y
252 63
253 config PGTABLE_4LEVEL !! 64 config GENERIC_IOMAP
254 bool 65 bool
>> 66 default n
255 67
256 config PGTABLE_LEVELS !! 68 config GENERIC_HARDIRQS
257 int !! 69 bool
258 default 2 if PGTABLE_2LEVEL !! 70 default y
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 71
262 config SCHED_OMIT_FRAME_POINTER !! 72 config GENERIC_IRQ_PROBE
263 bool 73 bool
264 default y 74 default y
265 75
266 config AS_HAS_EXPLICIT_RELOCS !! 76 config AUTO_IRQ_AFFINITY
267 def_bool $(as-instr,x:pcalau12i \$t0$( !! 77 bool
>> 78 depends on SMP
>> 79 default y
268 80
269 config AS_HAS_FCSR_CLASS !! 81 source "init/Kconfig"
270 def_bool $(as-instr,movfcsr2gr \$t0$(c !! 82 source "kernel/Kconfig.freezer"
271 83
272 config AS_HAS_THIN_ADD_SUB <<
273 def_bool $(cc-option,-Wa$(comma)-mthin <<
274 84
275 config AS_HAS_LSX_EXTENSION !! 85 menu "System setup"
276 def_bool $(as-instr,vld \$vr0$(comma)\ <<
277 86
278 config AS_HAS_LASX_EXTENSION !! 87 choice
279 def_bool $(as-instr,xvld \$xr0$(comma) !! 88 prompt "Alpha system type"
>> 89 default ALPHA_GENERIC
>> 90 ---help---
>> 91 This is the system type of your hardware. A "generic" kernel will
>> 92 run on any supported Alpha system. However, if you configure a
>> 93 kernel for your specific system, it will be faster and smaller.
280 94
281 config AS_HAS_LBT_EXTENSION !! 95 To find out what type of Alpha system you have, you may want to
282 def_bool $(as-instr,movscr2gr \$a0$(co !! 96 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 97 <http://www.alphalinux.org/>. In summary:
283 98
284 config AS_HAS_LVZ_EXTENSION !! 99 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
285 def_bool $(as-instr,hvcl 0) !! 100 Alpha-XL XL-233, XL-266
>> 101 AlphaBook1 Alpha laptop
>> 102 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 103 Cabriolet AlphaPC64, AlphaPCI64
>> 104 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 105 EB164 EB164 21164 evaluation board
>> 106 EB64+ EB64+ 21064 evaluation board
>> 107 EB66 EB66 21066 evaluation board
>> 108 EB66+ EB66+ 21066 evaluation board
>> 109 Jensen DECpc 150, DEC 2000 models 300, 500
>> 110 LX164 AlphaPC164-LX
>> 111 Lynx AS 2100A
>> 112 Miata Personal Workstation 433/500/600 a/au
>> 113 Marvel AlphaServer ES47 / ES80 / GS1280
>> 114 Mikasa AS 1000
>> 115 Noname AXPpci33, UDB (Multia)
>> 116 Noritake AS 1000A, AS 600A, AS 800
>> 117 PC164 AlphaPC164
>> 118 Rawhide AS 1200, AS 4000, AS 4100
>> 119 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 120 SX164 AlphaPC164-SX
>> 121 Sable AS 2000, AS 2100
>> 122 Shark DS 20L
>> 123 Takara Takara (OEM)
>> 124 Titan AlphaServer ES45 / DS25 / DS15
>> 125 Wildfire AlphaServer GS 40/80/160/320
286 126
287 menu "Kernel type and options" !! 127 If you don't know what to do, choose "generic".
288 128
289 source "kernel/Kconfig.hz" !! 129 config ALPHA_GENERIC
>> 130 bool "Generic"
>> 131 help
>> 132 A generic kernel will run on all supported Alpha hardware.
290 133
291 choice !! 134 config ALPHA_ALCOR
292 prompt "Page Table Layout" !! 135 bool "Alcor/Alpha-XLT"
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 136 help
345 This option selects 64KB page size w !! 137 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
346 support a maximum of 55 bits of appl !! 138 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 139 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 140 controller (256-bit memory bus) and a PCI interface. It also does
>> 141 all the work required to support an external Bcache and to maintain
>> 142 memory coherence when a PCI device DMAs into (or out of) memory.
347 143
348 endchoice !! 144 config ALPHA_XL
>> 145 bool "Alpha-XL"
>> 146 help
>> 147 XL-233 and XL-266-based Alpha systems.
349 148
350 config CMDLINE !! 149 config ALPHA_BOOK1
351 string "Built-in kernel command line" !! 150 bool "AlphaBook1"
352 help 151 help
353 For most platforms, the arguments fo !! 152 Dec AlphaBook1/Burns Alpha-based laptops.
354 are provided at run-time, during boo <<
355 where either no arguments are being <<
356 arguments are insufficient or even i <<
357 153
358 When that occurs, it is possible to !! 154 config ALPHA_AVANTI_CH
359 line here and choose how the kernel !! 155 bool "Avanti"
360 156
361 choice !! 157 config ALPHA_CABRIOLET
362 prompt "Kernel command line type" !! 158 bool "Cabriolet"
363 default CMDLINE_BOOTLOADER <<
364 help 159 help
365 Choose how the kernel will handle th !! 160 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
366 line. !! 161 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
>> 162 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
>> 163 Bcache SIMMs. Requires power supply with 3.3V output.
367 164
368 config CMDLINE_BOOTLOADER !! 165 config ALPHA_DP264
369 bool "Use bootloader kernel arguments !! 166 bool "DP264"
370 help 167 help
371 Prefer the command-line passed by th !! 168 Various 21264 systems with the tsunami core logic chipset.
372 Use the built-in command line as fal !! 169 API Networks: 264DP, UP2000(+), CS20;
373 during boot. This is the default beh !! 170 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
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. <<
390 171
391 endchoice !! 172 config ALPHA_EB164
>> 173 bool "EB164"
>> 174 help
>> 175 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
>> 176 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
>> 177 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 178 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 179 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 180 motherboard. Requires power supply with 3.3V output.
392 181
393 config BUILTIN_DTB !! 182 config ALPHA_EB64P_CH
394 bool "Enable built-in dtb in kernel" !! 183 bool "EB64+"
395 depends on OF !! 184
>> 185 config ALPHA_EB66
>> 186 bool "EB66"
396 help 187 help
397 Some existing systems do not provide !! 188 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
398 the kernel at boot time. Let's provi !! 189 identical to EB64+. Baby PC-AT size. Runs from standard PC power
399 kernel, keyed by the dts filename, c !! 190 supply. The EB66 schematic was published as a marketing poster
>> 191 advertising the 21066 as "the first microprocessor in the world with
>> 192 embedded PCI".
400 193
401 Built-in DTBs are generic enough and !! 194 config ALPHA_EB66P
>> 195 bool "EB66+"
>> 196 help
>> 197 Later variant of the EB66 board.
402 198
403 config BUILTIN_DTB_NAME !! 199 config ALPHA_EIGER
404 string "Source file for built-in dtb" !! 200 bool "Eiger"
405 depends on BUILTIN_DTB <<
406 help 201 help
407 Base name (without suffix, relative !! 202 Apparently an obscure OEM single-board computer based on the
408 for the DTS file that will be used t !! 203 Typhoon/Tsunami chipset family. Information on it is scanty.
409 the kernel. <<
410 204
411 config DMI !! 205 config ALPHA_JENSEN
412 bool "Enable DMI scanning" !! 206 bool "Jensen"
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA <<
414 default y <<
415 help 207 help
416 This enables SMBIOS/DMI feature for !! 208 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
417 DMI to identify machine quirks. !! 209 of the first-generation Alpha systems. A number of these systems
>> 210 seem to be available on the second- hand market. The Jensen is a
>> 211 floor-standing tower system which originally used a 150MHz 21064 It
>> 212 used programmable logic to interface a 486 EISA I/O bridge to the
>> 213 CPU.
418 214
419 config EFI !! 215 config ALPHA_LX164
420 bool "EFI runtime service support" !! 216 bool "LX164"
421 select UCS2_STRING <<
422 select EFI_RUNTIME_WRAPPERS <<
423 help 217 help
424 This enables the kernel to use EFI r !! 218 A technical overview of this board is available at
425 available (such as the EFI variable !! 219 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
426 220
427 config EFI_STUB !! 221 config ALPHA_LYNX
428 bool "EFI boot stub support" !! 222 bool "Lynx"
429 default y <<
430 depends on EFI <<
431 select EFI_GENERIC_STUB <<
432 help 223 help
433 This kernel feature allows the kerne !! 224 AlphaServer 2100A-based systems.
434 EFI firmware without the use of a bo <<
435 225
436 config SCHED_SMT !! 226 config ALPHA_MARVEL
437 bool "SMT scheduler support" !! 227 bool "Marvel"
438 depends on SMP <<
439 default y <<
440 help 228 help
441 Improves scheduler's performance whe !! 229 AlphaServer ES47 / ES80 / GS1280 based on EV7.
442 threads in one physical core. <<
443 230
444 config SMP !! 231 config ALPHA_MIATA
445 bool "Multi-Processing support" !! 232 bool "Miata"
446 help 233 help
447 This enables support for systems wit !! 234 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
448 a system with only one CPU, say N. I !! 235 or 600au).
449 than one CPU, say Y. <<
450 236
451 If you say N here, the kernel will r !! 237 config ALPHA_MIKASA
452 machines, but will use only one CPU !! 238 bool "Mikasa"
453 you say Y here, the kernel will run !! 239 help
454 uniprocessor machines. On a uniproce !! 240 AlphaServer 1000-based Alpha systems.
455 will run faster if you say N here. <<
456 241
457 See also the SMP-HOWTO available at !! 242 config ALPHA_NAUTILUS
>> 243 bool "Nautilus"
>> 244 help
>> 245 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
458 246
459 If you don't know what to do here, s !! 247 config ALPHA_NONAME_CH
>> 248 bool "Noname"
460 249
461 config HOTPLUG_CPU !! 250 config ALPHA_NORITAKE
462 bool "Support for hot-pluggable CPUs" !! 251 bool "Noritake"
463 depends on SMP <<
464 select GENERIC_IRQ_MIGRATION <<
465 help 252 help
466 Say Y here to allow turning CPUs off !! 253 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
467 controlled through /sys/devices/syst !! 254 systems.
468 (Note: power management support will <<
469 automatically on SMP systems. ) <<
470 Say N if you want to disable CPU hot <<
471 255
472 config NR_CPUS !! 256 config ALPHA_PC164
473 int "Maximum number of CPUs (2-256)" !! 257 bool "PC164"
474 range 2 256 !! 258
475 depends on SMP !! 259 config ALPHA_P2K
476 default "64" !! 260 bool "Platform2000"
>> 261
>> 262 config ALPHA_RAWHIDE
>> 263 bool "Rawhide"
477 help 264 help
478 This allows you to specify the maxim !! 265 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
479 kernel will support. !! 266 See HOWTO at
>> 267 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
480 268
481 config NUMA !! 269 config ALPHA_RUFFIAN
482 bool "NUMA Support" !! 270 bool "Ruffian"
483 select SMP <<
484 help 271 help
485 Say Y to compile the kernel with NUM !! 272 Samsung APC164UX. There is a page on known problems and workarounds
486 support. This option improves perfo !! 273 at <http://www.alphalinux.org/faq/FAQ-11.html>.
487 than one NUMA node; on single node s <<
488 to leave it disabled. <<
489 274
490 config NODES_SHIFT !! 275 config ALPHA_RX164
491 int !! 276 bool "RX164"
492 default "6" <<
493 depends on NUMA <<
494 277
495 config ARCH_FORCE_MAX_ORDER !! 278 config ALPHA_SX164
496 int "Maximum zone order" !! 279 bool "SX164"
497 default "13" if PAGE_SIZE_64KB !! 280
498 default "11" if PAGE_SIZE_16KB !! 281 config ALPHA_SABLE
499 default "10" !! 282 bool "Sable"
500 help 283 help
501 The kernel memory allocator divides !! 284 Digital AlphaServer 2000 and 2100-based systems.
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. <<
507 285
508 The page size is not necessarily 4KB !! 286 config ALPHA_SHARK
509 when choosing a value for this optio !! 287 bool "Shark"
510 288
511 config ARCH_IOREMAP !! 289 config ALPHA_TAKARA
512 bool "Enable LoongArch DMW-based iorem !! 290 bool "Takara"
513 help 291 help
514 We use generic TLB-based ioremap() b !! 292 Alpha 11164-based OEM single-board computer.
515 protection support. However, you can <<
516 ioremap() for better performance. <<
517 293
518 config ARCH_WRITECOMBINE !! 294 config ALPHA_TITAN
519 bool "Enable WriteCombine (WUC) for io !! 295 bool "Titan"
520 help 296 help
521 LoongArch maintains cache coherency !! 297 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
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). <<
526 298
527 This means WUC can only used for wri !! 299 config ALPHA_WILDFIRE
528 this option is disabled by default, !! 300 bool "Wildfire"
529 SUC for ioremap(). You can enable th !! 301 help
530 to run on hardware without this bug. !! 302 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
531 303
532 You can override this setting via wr !! 304 endchoice
533 305
534 config ARCH_STRICT_ALIGN !! 306 # clear all implied options (don't want default values for those):
535 bool "Enable -mstrict-align to prevent !! 307 # Most of these machines have ISA slots; not exactly sure which don't,
>> 308 # and this doesn't activate hordes of code, so do it always.
>> 309 config ISA
>> 310 bool
536 default y 311 default y
537 help 312 help
538 Not all LoongArch cores support h/w !! 313 Find out whether you have ISA slots on your motherboard. ISA is the
539 -mstrict-align build parameter to pr !! 314 name of a bus system, i.e. the way the CPU talks to the other stuff
540 !! 315 inside your box. Other bus systems are PCI, EISA, MicroChannel
541 CPUs with h/w unaligned access suppo !! 316 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 317 newer boards don't support it. If you have ISA, say Y, otherwise N.
543 318
544 CPUs without h/w unaligned access su !! 319 config ISA_DMA_API
545 Loongson-2K500/2K1000. !! 320 bool
>> 321 default y
546 322
547 This option is enabled by default to !! 323 config PCI
548 on all LoongArch systems. But you ca !! 324 bool
549 to run kernel only on systems with h !! 325 depends on !ALPHA_JENSEN
550 order to optimise for performance. !! 326 default y
>> 327 help
>> 328 Find out whether you have a PCI motherboard. PCI is the name of a
>> 329 bus system, i.e. the way the CPU talks to the other stuff inside
>> 330 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
>> 331 VESA. If you have PCI, say Y, otherwise N.
551 332
552 config CPU_HAS_FPU !! 333 config PCI_DOMAINS
553 bool 334 bool
554 default y 335 default y
555 336
556 config CPU_HAS_LSX !! 337 config PCI_SYSCALL
557 bool "Support for the Loongson SIMD Ex !! 338 def_bool PCI
558 depends on AS_HAS_LSX_EXTENSION <<
559 help <<
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 <<
567 339
568 If unsure, say Y. !! 340 config IOMMU_HELPER
>> 341 def_bool PCI
569 342
570 config CPU_HAS_LASX !! 343 config ALPHA_NONAME
571 bool "Support for the Loongson Advance !! 344 bool
572 depends on CPU_HAS_LSX !! 345 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
573 depends on AS_HAS_LASX_EXTENSION !! 346 default y
574 help 347 help
575 Loongson Advanced SIMD Extension (LA !! 348 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
576 registers and a set of SIMD instruct !! 349 UDB). This design was produced by Digital's Technical OEM (TOEM)
577 option is enabled the kernel will su !! 350 group. It uses the 21066 processor running at 166MHz or 233MHz. It
578 vector register contexts. If you kno !! 351 is a baby-AT size, and runs from a standard PC power supply. It has
579 running on CPUs which do not support !! 352 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
580 not be making use of it then you may !! 353 2 versions, with either PS/2 or large DIN connectors for the
581 the size & complexity of your kernel !! 354 keyboard.
582 355
583 If unsure, say Y. !! 356 config ALPHA_EV4
>> 357 bool
>> 358 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 359 default y if !ALPHA_LYNX
584 360
585 config CPU_HAS_LBT !! 361 config ALPHA_LCA
586 bool "Support for the Loongson Binary !! 362 bool
587 depends on AS_HAS_LBT_EXTENSION !! 363 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
588 help !! 364 default y
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. <<
593 365
594 If you want to use this feature, suc !! 366 config ALPHA_APECS
595 Translator (LAT), say Y. !! 367 bool
>> 368 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 369 default y
596 370
597 config CPU_HAS_PREFETCH !! 371 config ALPHA_EB64P
598 bool 372 bool
>> 373 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
599 default y 374 default y
>> 375 help
>> 376 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
>> 377 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
>> 378 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 379 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 380 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 381 Runs from standard PC power supply.
600 382
601 config ARCH_SUPPORTS_KEXEC !! 383 config ALPHA_EV5
602 def_bool y !! 384 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 385 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
603 386
604 config ARCH_SUPPORTS_CRASH_DUMP !! 387 config ALPHA_EV4
605 def_bool y !! 388 bool
>> 389 default y if ALPHA_LYNX && !ALPHA_EV5
606 390
607 config ARCH_SELECTS_CRASH_DUMP !! 391 config ALPHA_CIA
608 def_bool y !! 392 bool
609 depends on CRASH_DUMP !! 393 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
610 select RELOCATABLE !! 394 default y
>> 395
>> 396 config ALPHA_EV56
>> 397 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 398 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
>> 399
>> 400 config ALPHA_EV56
>> 401 prompt "EV56 CPU (speed >= 333MHz)?"
>> 402 depends on ALPHA_NORITAKE || ALPHA_PRIMO
611 403
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 404 config ALPHA_EV56
613 def_bool CRASH_RESERVE !! 405 prompt "EV56 CPU (speed >= 400MHz)?"
>> 406 depends on ALPHA_RAWHIDE
614 407
615 config RELOCATABLE !! 408 config ALPHA_PRIMO
616 bool "Relocatable kernel" !! 409 bool "EV5 CPU daughtercard (model 5/xxx)?"
617 select ARCH_HAS_RELR !! 410 depends on ALPHA_NORITAKE || ALPHA_MIKASA
618 help 411 help
619 This builds the kernel as a Position !! 412 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
620 which retains all relocation metadat <<
621 the kernel binary at runtime to a di <<
622 its link address. <<
623 413
624 config RANDOMIZE_BASE !! 414 config ALPHA_GAMMA
625 bool "Randomize the address of the ker !! 415 bool "EV5 CPU(s) (model 5/xxx)?"
626 depends on RELOCATABLE !! 416 depends on ALPHA_SABLE
627 help 417 help
628 Randomizes the physical and virtual !! 418 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
629 kernel image is loaded, as a securi !! 419
630 deters exploit attempts relying on !! 420 config ALPHA_GAMMA
631 of kernel internals. !! 421 bool
>> 422 depends on ALPHA_LYNX
>> 423 default y
>> 424
>> 425 config ALPHA_T2
>> 426 bool
>> 427 depends on ALPHA_SABLE || ALPHA_LYNX
>> 428 default y
632 429
633 The kernel will be offset by up to !! 430 config ALPHA_PYXIS
>> 431 bool
>> 432 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 433 default y
634 434
635 If unsure, say N. !! 435 config ALPHA_EV6
>> 436 bool
>> 437 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
>> 438 default y
636 439
637 config RANDOMIZE_BASE_MAX_OFFSET !! 440 config ALPHA_TSUNAMI
638 hex "Maximum KASLR offset" if EXPERT !! 441 bool
639 depends on RANDOMIZE_BASE !! 442 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
640 range 0x0 0x10000000 !! 443 default y
641 default "0x01000000" !! 444
>> 445 config ALPHA_EV67
>> 446 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
>> 447 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
642 help 448 help
643 When KASLR is active, this provides !! 449 Is this a machine based on the EV67 core? If in doubt, select N here
644 be applied to the kernel image. It s !! 450 and the machine will be treated as an EV6.
645 amount of physical RAM available in !! 451
>> 452 config ALPHA_EV7
>> 453 bool
>> 454 depends on ALPHA_MARVEL
>> 455 default y
646 456
647 This is limited by the size of the l !! 457 config ALPHA_MCPCIA
>> 458 bool
>> 459 depends on ALPHA_RAWHIDE
>> 460 default y
648 461
649 source "kernel/livepatch/Kconfig" !! 462 config ALPHA_POLARIS
>> 463 bool
>> 464 depends on ALPHA_RX164
>> 465 default y
650 466
651 config PARAVIRT !! 467 config ALPHA_IRONGATE
652 bool "Enable paravirtualization code" !! 468 bool
653 depends on AS_HAS_LVZ_EXTENSION !! 469 depends on ALPHA_NAUTILUS
>> 470 default y
>> 471
>> 472 config GENERIC_HWEIGHT
>> 473 bool
>> 474 default y if !ALPHA_EV67
>> 475
>> 476 config ALPHA_AVANTI
>> 477 bool
>> 478 depends on ALPHA_XL || ALPHA_AVANTI_CH
>> 479 default y
654 help 480 help
655 This changes the kernel so it can mo !! 481 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
656 under a hypervisor, potentially impr !! 482 Alphas. Info at
657 over full virtualization. However, !! 483 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
658 the kernel is theoretically slower a !! 484
>> 485 config ALPHA_BROKEN_IRQ_MASK
>> 486 bool
>> 487 depends on ALPHA_GENERIC || ALPHA_PC164
>> 488 default y
659 489
660 config PARAVIRT_TIME_ACCOUNTING !! 490 config VGA_HOSE
661 bool "Paravirtual steal time accountin !! 491 bool
662 depends on PARAVIRT !! 492 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
>> 493 default y
663 help 494 help
664 Select this option to enable fine gr !! 495 Support VGA on an arbitrary hose; needed for several platforms
665 accounting. Time spent executing oth !! 496 which always have multiple hoses, and whose consoles support it.
666 the current vCPU is discounted from <<
667 that, there can be a small performan <<
668 497
669 If in doubt, say N here. <<
670 498
671 endmenu !! 499 config ALPHA_SRM
>> 500 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
>> 501 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
>> 502 ---help---
>> 503 There are two different types of booting firmware on Alphas: SRM,
>> 504 which is command line driven, and ARC, which uses menus and arrow
>> 505 keys. Details about the Linux/Alpha booting process are contained in
>> 506 the Linux/Alpha FAQ, accessible on the WWW from
>> 507 <http://www.alphalinux.org/>.
672 508
673 config ARCH_SELECT_MEMORY_MODEL !! 509 The usual way to load Linux on an Alpha machine is to use MILO
674 def_bool y !! 510 (a bootloader that lets you pass command line parameters to the
>> 511 kernel just like lilo does for the x86 architecture) which can be
>> 512 loaded either from ARC or can be installed directly as a permanent
>> 513 firmware replacement from floppy (which requires changing a certain
>> 514 jumper on the motherboard). If you want to do either of these, say N
>> 515 here. If MILO doesn't work on your system (true for Jensen
>> 516 motherboards), you can bypass it altogether and boot Linux directly
>> 517 from an SRM console; say Y here in order to do that. Note that you
>> 518 won't be able to boot from an IDE disk using SRM.
675 519
676 config ARCH_FLATMEM_ENABLE !! 520 If unsure, say N.
677 def_bool y !! 521
678 depends on !NUMA !! 522 config EISA
>> 523 bool
>> 524 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
>> 525 default y
679 526
680 config ARCH_SPARSEMEM_ENABLE !! 527 config ARCH_MAY_HAVE_PC_FDC
681 def_bool y 528 def_bool y
682 select SPARSEMEM_VMEMMAP_ENABLE !! 529
>> 530 config SMP
>> 531 bool "Symmetric multi-processing support"
>> 532 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 533 select USE_GENERIC_SMP_HELPERS
>> 534 ---help---
>> 535 This enables support for systems with more than one CPU. If you have
>> 536 a system with only one CPU, like most personal computers, say N. If
>> 537 you have a system with more than one CPU, say Y.
>> 538
>> 539 If you say N here, the kernel will run on single and multiprocessor
>> 540 machines, but will use only one CPU of a multiprocessor machine. If
>> 541 you say Y here, the kernel will run on many, but not all,
>> 542 singleprocessor machines. On a singleprocessor machine, the kernel
>> 543 will run faster if you say N here.
>> 544
>> 545 See also the SMP-HOWTO available at
>> 546 <http://www.tldp.org/docs.html#howto>.
>> 547
>> 548 If you don't know what to do here, say N.
>> 549
>> 550 config HAVE_DEC_LOCK
>> 551 bool
>> 552 depends on SMP
>> 553 default y
>> 554
>> 555 config NR_CPUS
>> 556 int "Maximum number of CPUs (2-32)"
>> 557 range 2 32
>> 558 depends on SMP
>> 559 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 560 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
>> 561 help
>> 562 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 563 with working support have a maximum of 4 CPUs.
>> 564
>> 565 config ARCH_DISCONTIGMEM_ENABLE
>> 566 bool "Discontiguous Memory Support (EXPERIMENTAL)"
>> 567 depends on EXPERIMENTAL
683 help 568 help
684 Say Y to support efficient handling !! 569 Say Y to support efficient handling of discontiguous physical memory,
685 for architectures which are either N 570 for architectures which are either NUMA (Non-Uniform Memory Access)
686 or have huge holes in the physical a 571 or have huge holes in the physical address space for other reasons.
687 See <file:Documentation/mm/numa.rst> !! 572 See <file:Documentation/vm/numa> for more.
688 573
689 config ARCH_MEMORY_PROBE !! 574 source "mm/Kconfig"
690 def_bool y <<
691 depends on MEMORY_HOTPLUG <<
692 575
693 config MMU !! 576 config NUMA
694 bool !! 577 bool "NUMA Support (EXPERIMENTAL)"
695 default y !! 578 depends on DISCONTIGMEM && BROKEN
>> 579 help
>> 580 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 581 Access). This option is for configuring high-end multiprocessor
>> 582 server machines. If in doubt, say N.
696 583
697 config ARCH_MMAP_RND_BITS_MIN !! 584 config NODES_SHIFT
698 default 12 !! 585 int
>> 586 default "7"
>> 587 depends on NEED_MULTIPLE_NODES
699 588
700 config ARCH_MMAP_RND_BITS_MAX !! 589 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
701 default 18 !! 590 config ALPHA_LARGE_VMALLOC
>> 591 bool
>> 592 ---help---
>> 593 Process creation and other aspects of virtual memory management can
>> 594 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 595 allocations. This equates to about 8GB.
>> 596
>> 597 Under normal circumstances, this is so far and above what is needed
>> 598 as to be laughable. However, there are certain applications (such
>> 599 as benchmark-grade in-kernel web serving) that can make use of as
>> 600 much vmalloc space as is available.
>> 601
>> 602 Say N unless you know you need gobs and gobs of vmalloc space.
>> 603
>> 604 config VERBOSE_MCHECK
>> 605 bool "Verbose Machine Checks"
>> 606
>> 607 config VERBOSE_MCHECK_ON
>> 608 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 609 depends on VERBOSE_MCHECK
>> 610 default 1
>> 611 ---help---
>> 612 This option allows the default printing mode to be set, and then
>> 613 possibly overridden by a boot command argument.
>> 614
>> 615 For example, if one wanted the option of printing verbose
>> 616 machine checks, but wanted the default to be as if verbose
>> 617 machine check printing was turned off, then one would choose
>> 618 the printing mode to be 0. Then, upon reboot, one could add
>> 619 the boot command line "verbose_mcheck=1" to get the normal
>> 620 verbose machine check printing, or "verbose_mcheck=2" to get
>> 621 the maximum information available.
702 622
703 config ARCH_SUPPORTS_UPROBES !! 623 Take the default (1) unless you want more control or more info.
704 def_bool y <<
705 624
706 config KASAN_SHADOW_OFFSET !! 625 config HZ
707 hex !! 626 int
708 default 0x0 !! 627 default 1200 if ALPHA_RAWHIDE
709 depends on KASAN !! 628 default 1024
710 629
711 menu "Power management options" !! 630 source "drivers/pci/Kconfig"
>> 631 source "drivers/eisa/Kconfig"
712 632
713 config ARCH_SUSPEND_POSSIBLE !! 633 source "drivers/pcmcia/Kconfig"
714 def_bool y <<
715 634
716 config ARCH_HIBERNATION_POSSIBLE !! 635 config SRM_ENV
717 def_bool y !! 636 tristate "SRM environment through procfs"
>> 637 depends on PROC_FS
>> 638 ---help---
>> 639 If you enable this option, a subdirectory inside /proc called
>> 640 /proc/srm_environment will give you access to the all important
>> 641 SRM environment variables (those which have a name) and also
>> 642 to all others (by their internal number).
>> 643
>> 644 SRM is something like a BIOS for Alpha machines. There are some
>> 645 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 646 support (hey, that's not SRM!).
>> 647
>> 648 Despite the fact that this driver doesn't work on all Alphas (but
>> 649 only on those which have SRM as their firmware), it's save to
>> 650 build it even if your particular machine doesn't know about SRM
>> 651 (or if you intend to compile a generic kernel). It will simply
>> 652 not create those subdirectory in /proc (and give you some warning,
>> 653 of course).
718 654
719 source "kernel/power/Kconfig" !! 655 This driver is also available as a module and will be called
720 source "drivers/acpi/Kconfig" !! 656 srm_env then.
721 source "drivers/cpufreq/Kconfig" !! 657
>> 658 source "fs/Kconfig.binfmt"
722 659
723 endmenu 660 endmenu
724 661
725 source "arch/loongarch/kvm/Kconfig" !! 662 source "net/Kconfig"
>> 663
>> 664 source "drivers/Kconfig"
>> 665
>> 666 source "fs/Kconfig"
>> 667
>> 668 source "arch/alpha/Kconfig.debug"
>> 669
>> 670 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 671 # but we also need it if VGA_HOSE is set
>> 672 config DUMMY_CONSOLE
>> 673 bool
>> 674 depends on VGA_HOSE
>> 675 default y
>> 676
>> 677 source "security/Kconfig"
>> 678
>> 679 source "crypto/Kconfig"
>> 680
>> 681 source "lib/Kconfig"
>> 682
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