1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 config LOONGARCH !! 2 config ALPHA
3 bool 3 bool
4 default y 4 default y
5 select ACPI !! 5 select ARCH_32BIT_USTAT_F_TINODE
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 6 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 7 select ARCH_MIGHT_HAVE_PC_PARPORT
59 select ARCH_MIGHT_HAVE_PC_SERIO 8 select ARCH_MIGHT_HAVE_PC_SERIO
60 select ARCH_SPARSEMEM_ENABLE !! 9 select ARCH_NO_PREEMPT
61 select ARCH_STACKWALK !! 10 select ARCH_NO_SG_CHAIN
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 11 select ARCH_USE_CMPXCHG_LOCKREF
71 select ARCH_USE_QUEUED_RWLOCKS !! 12 select DMA_OPS if PCI
72 select ARCH_USE_QUEUED_SPINLOCKS !! 13 select FORCE_PCI if !ALPHA_JENSEN
73 select ARCH_WANT_DEFAULT_BPF_JIT !! 14 select PCI_DOMAINS if PCI
74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ !! 15 select PCI_SYSCALL if PCI
75 select ARCH_WANT_LD_ORPHAN_WARN !! 16 select HAVE_ASM_MODVERSIONS
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM !! 17 select HAVE_PCSPKR_PLATFORM
77 select ARCH_WANTS_NO_INSTR !! 18 select HAVE_PERF_EVENTS
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC !! 19 select NEED_DMA_MAP_STATE
79 select BUILDTIME_TABLE_SORT !! 20 select NEED_SG_DMA_LENGTH
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 21 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 22 select GENERIC_PCI_IOMAP
102 select GENERIC_SCHED_CLOCK !! 23 select AUTO_IRQ_AFFINITY if SMP
>> 24 select GENERIC_IRQ_SHOW
>> 25 select ARCH_WANT_IPC_PARSE_VERSION
>> 26 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 27 select AUDIT_ARCH
>> 28 select GENERIC_CPU_VULNERABILITIES
103 select GENERIC_SMP_IDLE_THREAD 29 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL <<
105 select GENERIC_VDSO_TIME_NS <<
106 select GPIOLIB <<
107 select HAS_IOPORT 30 select HAS_IOPORT
108 select HAVE_ARCH_AUDITSYSCALL 31 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 32 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 33 select LOCK_MM_AND_FIND_VMA
175 select MMU_GATHER_MERGE_VMAS if MMU !! 34 select MODULES_USE_ELF_RELA
176 select MODULES_USE_ELF_RELA if MODULES !! 35 select ODD_RT_SIGACTION
177 select NEED_PER_CPU_EMBED_FIRST_CHUNK !! 36 select OLD_SIGSUSPEND
178 select NEED_PER_CPU_PAGE_FIRST_CHUNK !! 37 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
179 select OF !! 38 select MMU_GATHER_NO_RANGE
180 select OF_EARLY_FLATTREE !! 39 select SPARSEMEM_EXTREME if SPARSEMEM
181 select PCI !! 40 select ZONE_DMA
182 select PCI_DOMAINS_GENERIC !! 41 help
183 select PCI_ECAM if ACPI !! 42 The Alpha is a 64-bit general-purpose processor designed and
184 select PCI_LOONGSON !! 43 marketed by the Digital Equipment Corporation of blessed memory,
185 select PCI_MSI_ARCH_FALLBACKS !! 44 now Hewlett-Packard. The Alpha Linux project has a home page at
186 select PCI_QUIRKS !! 45 <http://www.alphalinux.org/>.
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 46
203 config 64BIT 47 config 64BIT
204 def_bool y 48 def_bool y
205 49
206 config GENERIC_BUG !! 50 config MMU
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 <<
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 51 bool
229 default y 52 default y
230 53
231 config STACKTRACE_SUPPORT !! 54 config ARCH_HAS_ILOG2_U32
232 bool 55 bool
233 default y !! 56 default n
234 57
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli !! 58 config ARCH_HAS_ILOG2_U64
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 59 bool
>> 60 default n
249 61
250 config PGTABLE_3LEVEL !! 62 config GENERIC_CALIBRATE_DELAY
251 bool 63 bool
>> 64 default y
252 65
253 config PGTABLE_4LEVEL !! 66 config GENERIC_ISA_DMA
254 bool 67 bool
>> 68 default y
255 69
256 config PGTABLE_LEVELS 70 config PGTABLE_LEVELS
257 int 71 int
258 default 2 if PGTABLE_2LEVEL !! 72 default 3
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 73
262 config SCHED_OMIT_FRAME_POINTER !! 74 config AUDIT_ARCH
263 bool 75 bool
264 default y <<
265 76
266 config AS_HAS_EXPLICIT_RELOCS !! 77 menu "System setup"
267 def_bool $(as-instr,x:pcalau12i \$t0$( <<
268 78
269 config AS_HAS_FCSR_CLASS !! 79 choice
270 def_bool $(as-instr,movfcsr2gr \$t0$(c !! 80 prompt "Alpha system type"
271 !! 81 default ALPHA_GENERIC
272 config AS_HAS_THIN_ADD_SUB !! 82 help
273 def_bool $(cc-option,-Wa$(comma)-mthin !! 83 This is the system type of your hardware. A "generic" kernel will
>> 84 run on any supported Alpha system. However, if you configure a
>> 85 kernel for your specific system, it will be faster and smaller.
274 86
275 config AS_HAS_LSX_EXTENSION !! 87 To find out what type of Alpha system you have, you may want to
276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 88 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 89 <http://www.alphalinux.org/>. In summary:
277 90
278 config AS_HAS_LASX_EXTENSION !! 91 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
279 def_bool $(as-instr,xvld \$xr0$(comma) !! 92 Alpha-XL XL-233, XL-266
>> 93 AlphaBook1 Alpha laptop
>> 94 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 95 Cabriolet AlphaPC64, AlphaPCI64
>> 96 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 97 EB164 EB164 21164 evaluation board
>> 98 EB64+ EB64+ 21064 evaluation board
>> 99 EB66 EB66 21066 evaluation board
>> 100 EB66+ EB66+ 21066 evaluation board
>> 101 Jensen DECpc 150, DEC 2000 models 300, 500
>> 102 LX164 AlphaPC164-LX
>> 103 Lynx AS 2100A
>> 104 Miata Personal Workstation 433/500/600 a/au
>> 105 Marvel AlphaServer ES47 / ES80 / GS1280
>> 106 Mikasa AS 1000
>> 107 Noname AXPpci33, UDB (Multia)
>> 108 Noritake AS 1000A, AS 600A, AS 800
>> 109 PC164 AlphaPC164
>> 110 Rawhide AS 1200, AS 4000, AS 4100
>> 111 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 112 SX164 AlphaPC164-SX
>> 113 Sable AS 2000, AS 2100
>> 114 Shark DS 20L
>> 115 Takara Takara (OEM)
>> 116 Titan AlphaServer ES45 / DS25 / DS15
>> 117 Wildfire AlphaServer GS 40/80/160/320
280 118
281 config AS_HAS_LBT_EXTENSION !! 119 If you don't know what to do, choose "generic".
282 def_bool $(as-instr,movscr2gr \$a0$(co <<
283 120
284 config AS_HAS_LVZ_EXTENSION !! 121 config ALPHA_GENERIC
285 def_bool $(as-instr,hvcl 0) !! 122 bool "Generic"
>> 123 depends on TTY
>> 124 select HAVE_EISA
>> 125 help
>> 126 A generic kernel will run on all supported Alpha hardware.
286 127
287 menu "Kernel type and options" !! 128 config ALPHA_ALCOR
>> 129 bool "Alcor/Alpha-XLT"
>> 130 select HAVE_EISA
>> 131 help
>> 132 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 133 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 134 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 135 controller (256-bit memory bus) and a PCI interface. It also does
>> 136 all the work required to support an external Bcache and to maintain
>> 137 memory coherence when a PCI device DMAs into (or out of) memory.
288 138
289 source "kernel/Kconfig.hz" !! 139 config ALPHA_XL
>> 140 bool "Alpha-XL"
>> 141 help
>> 142 XL-233 and XL-266-based Alpha systems.
290 143
291 choice !! 144 config ALPHA_BOOK1
292 prompt "Page Table Layout" !! 145 bool "AlphaBook1"
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 146 help
345 This option selects 64KB page size w !! 147 Dec AlphaBook1/Burns Alpha-based laptops.
346 support a maximum of 55 bits of appl <<
347 148
348 endchoice !! 149 config ALPHA_AVANTI_CH
>> 150 bool "Avanti"
349 151
350 config CMDLINE !! 152 config ALPHA_CABRIOLET
351 string "Built-in kernel command line" !! 153 bool "Cabriolet"
352 help 154 help
353 For most platforms, the arguments fo !! 155 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
354 are provided at run-time, during boo !! 156 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
355 where either no arguments are being !! 157 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
356 arguments are insufficient or even i !! 158 Bcache SIMMs. Requires power supply with 3.3V output.
357 <<
358 When that occurs, it is possible to <<
359 line here and choose how the kernel <<
360 159
361 choice !! 160 config ALPHA_DP264
362 prompt "Kernel command line type" !! 161 bool "DP264"
363 default CMDLINE_BOOTLOADER <<
364 help 162 help
365 Choose how the kernel will handle th !! 163 Various 21264 systems with the tsunami core logic chipset.
366 line. !! 164 API Networks: 264DP, UP2000(+), CS20;
>> 165 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
367 166
368 config CMDLINE_BOOTLOADER !! 167 config ALPHA_EB164
369 bool "Use bootloader kernel arguments !! 168 bool "EB164"
370 help 169 help
371 Prefer the command-line passed by th !! 170 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
372 Use the built-in command line as fal !! 171 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
373 during boot. This is the default beh !! 172 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
374 !! 173 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
375 config CMDLINE_EXTEND !! 174 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
376 bool "Use built-in to extend bootloade !! 175 motherboard. Requires power supply with 3.3V output.
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. <<
390 176
391 endchoice !! 177 config ALPHA_EB64P_CH
>> 178 bool "EB64+"
392 179
393 config BUILTIN_DTB !! 180 config ALPHA_EB66
394 bool "Enable built-in dtb in kernel" !! 181 bool "EB66"
395 depends on OF <<
396 help 182 help
397 Some existing systems do not provide !! 183 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
398 the kernel at boot time. Let's provi !! 184 identical to EB64+. Baby PC-AT size. Runs from standard PC power
399 kernel, keyed by the dts filename, c !! 185 supply. The EB66 schematic was published as a marketing poster
>> 186 advertising the 21066 as "the first microprocessor in the world with
>> 187 embedded PCI".
400 188
401 Built-in DTBs are generic enough and !! 189 config ALPHA_EB66P
>> 190 bool "EB66+"
>> 191 help
>> 192 Later variant of the EB66 board.
402 193
403 config BUILTIN_DTB_NAME !! 194 config ALPHA_EIGER
404 string "Source file for built-in dtb" !! 195 bool "Eiger"
405 depends on BUILTIN_DTB <<
406 help 196 help
407 Base name (without suffix, relative !! 197 Apparently an obscure OEM single-board computer based on the
408 for the DTS file that will be used t !! 198 Typhoon/Tsunami chipset family. Information on it is scanty.
409 the kernel. <<
410 199
411 config DMI !! 200 config ALPHA_JENSEN
412 bool "Enable DMI scanning" !! 201 bool "Jensen"
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA !! 202 select HAVE_EISA
414 default y <<
415 help 203 help
416 This enables SMBIOS/DMI feature for !! 204 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
417 DMI to identify machine quirks. !! 205 of the first-generation Alpha systems. A number of these systems
>> 206 seem to be available on the second- hand market. The Jensen is a
>> 207 floor-standing tower system which originally used a 150MHz 21064 It
>> 208 used programmable logic to interface a 486 EISA I/O bridge to the
>> 209 CPU.
418 210
419 config EFI !! 211 config ALPHA_LX164
420 bool "EFI runtime service support" !! 212 bool "LX164"
421 select UCS2_STRING <<
422 select EFI_RUNTIME_WRAPPERS <<
423 help 213 help
424 This enables the kernel to use EFI r !! 214 A technical overview of this board is available at
425 available (such as the EFI variable !! 215 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
426 216
427 config EFI_STUB !! 217 config ALPHA_LYNX
428 bool "EFI boot stub support" !! 218 bool "Lynx"
429 default y !! 219 select HAVE_EISA
430 depends on EFI <<
431 select EFI_GENERIC_STUB <<
432 help 220 help
433 This kernel feature allows the kerne !! 221 AlphaServer 2100A-based systems.
434 EFI firmware without the use of a bo <<
435 222
436 config SCHED_SMT !! 223 config ALPHA_MARVEL
437 bool "SMT scheduler support" !! 224 bool "Marvel"
438 depends on SMP <<
439 default y <<
440 help 225 help
441 Improves scheduler's performance whe !! 226 AlphaServer ES47 / ES80 / GS1280 based on EV7.
442 threads in one physical core. <<
443 227
444 config SMP !! 228 config ALPHA_MIATA
445 bool "Multi-Processing support" !! 229 bool "Miata"
>> 230 select HAVE_EISA
446 help 231 help
447 This enables support for systems wit !! 232 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
448 a system with only one CPU, say N. I !! 233 or 600au).
449 than one CPU, say Y. <<
450 234
451 If you say N here, the kernel will r !! 235 config ALPHA_MIKASA
452 machines, but will use only one CPU !! 236 bool "Mikasa"
453 you say Y here, the kernel will run !! 237 help
454 uniprocessor machines. On a uniproce !! 238 AlphaServer 1000-based Alpha systems.
455 will run faster if you say N here. <<
456 239
457 See also the SMP-HOWTO available at !! 240 config ALPHA_NAUTILUS
>> 241 bool "Nautilus"
>> 242 help
>> 243 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
458 244
459 If you don't know what to do here, s !! 245 config ALPHA_NONAME_CH
>> 246 bool "Noname"
460 247
461 config HOTPLUG_CPU !! 248 config ALPHA_NORITAKE
462 bool "Support for hot-pluggable CPUs" !! 249 bool "Noritake"
463 depends on SMP !! 250 select HAVE_EISA
464 select GENERIC_IRQ_MIGRATION <<
465 help 251 help
466 Say Y here to allow turning CPUs off !! 252 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
467 controlled through /sys/devices/syst !! 253 systems.
468 (Note: power management support will <<
469 automatically on SMP systems. ) <<
470 Say N if you want to disable CPU hot <<
471 254
472 config NR_CPUS !! 255 config ALPHA_PC164
473 int "Maximum number of CPUs (2-256)" !! 256 bool "PC164"
474 range 2 256 !! 257
475 depends on SMP !! 258 config ALPHA_P2K
476 default "64" !! 259 bool "Platform2000"
>> 260
>> 261 config ALPHA_RAWHIDE
>> 262 bool "Rawhide"
>> 263 select HAVE_EISA
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" !! 277
493 depends on NUMA !! 278 config ALPHA_SX164
>> 279 bool "SX164"
494 280
495 config ARCH_FORCE_MAX_ORDER !! 281 config ALPHA_SABLE
496 int "Maximum zone order" !! 282 bool "Sable"
497 default "13" if PAGE_SIZE_64KB !! 283 select HAVE_EISA
498 default "11" if PAGE_SIZE_16KB <<
499 default "10" <<
500 help 284 help
501 The kernel memory allocator divides !! 285 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. <<
507 286
508 The page size is not necessarily 4KB !! 287 config ALPHA_SHARK
509 when choosing a value for this optio !! 288 bool "Shark"
510 289
511 config ARCH_IOREMAP !! 290 config ALPHA_TAKARA
512 bool "Enable LoongArch DMW-based iorem !! 291 bool "Takara"
513 help 292 help
514 We use generic TLB-based ioremap() b !! 293 Alpha 11164-based OEM single-board computer.
515 protection support. However, you can <<
516 ioremap() for better performance. <<
517 294
518 config ARCH_WRITECOMBINE !! 295 config ALPHA_TITAN
519 bool "Enable WriteCombine (WUC) for io !! 296 bool "Titan"
520 help 297 help
521 LoongArch maintains cache coherency !! 298 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). <<
526 299
527 This means WUC can only used for wri !! 300 config ALPHA_WILDFIRE
528 this option is disabled by default, !! 301 bool "Wildfire"
529 SUC for ioremap(). You can enable th !! 302 help
530 to run on hardware without this bug. !! 303 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
531 304
532 You can override this setting via wr !! 305 endchoice
533 306
534 config ARCH_STRICT_ALIGN !! 307 # clear all implied options (don't want default values for those):
535 bool "Enable -mstrict-align to prevent !! 308 # Most of these machines have ISA slots; not exactly sure which don't,
>> 309 # and this doesn't activate hordes of code, so do it always.
>> 310 config ISA
>> 311 bool
536 default y 312 default y
537 help 313 help
538 Not all LoongArch cores support h/w !! 314 Find out whether you have ISA slots on your motherboard. ISA is the
539 -mstrict-align build parameter to pr !! 315 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 316 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 317 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 318 newer boards don't support it. If you have ISA, say Y, otherwise N.
540 319
541 CPUs with h/w unaligned access suppo !! 320 config ISA_DMA_API
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 321 bool
>> 322 default y
>> 323
>> 324 config ALPHA_NONAME
>> 325 bool
>> 326 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 327 default y
>> 328 help
>> 329 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
>> 330 UDB). This design was produced by Digital's Technical OEM (TOEM)
>> 331 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 332 is a baby-AT size, and runs from a standard PC power supply. It has
>> 333 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 334 2 versions, with either PS/2 or large DIN connectors for the
>> 335 keyboard.
543 336
544 CPUs without h/w unaligned access su !! 337 config ALPHA_EV4
545 Loongson-2K500/2K1000. !! 338 bool
>> 339 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
>> 340 default y if !ALPHA_LYNX
546 341
547 This option is enabled by default to !! 342 config ALPHA_LCA
548 on all LoongArch systems. But you ca !! 343 bool
549 to run kernel only on systems with h !! 344 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
550 order to optimise for performance. !! 345 default y
551 346
552 config CPU_HAS_FPU !! 347 config ALPHA_APECS
553 bool 348 bool
>> 349 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
554 default y 350 default y
555 351
556 config CPU_HAS_LSX !! 352 config ALPHA_EB64P
557 bool "Support for the Loongson SIMD Ex !! 353 bool
558 depends on AS_HAS_LSX_EXTENSION !! 354 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 355 default y
559 help 356 help
560 Loongson SIMD Extension (LSX) introd !! 357 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
561 and a set of SIMD instructions to op !! 358 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
562 is enabled the kernel will support a !! 359 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
563 vector register contexts. If you kno !! 360 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
564 running on CPUs which do not support !! 361 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
565 not be making use of it then you may !! 362 Runs from standard PC power supply.
566 the size & complexity of your kernel <<
567 363
568 If unsure, say Y. !! 364 config ALPHA_EV5
>> 365 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 366 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
569 367
570 config CPU_HAS_LASX !! 368 config ALPHA_EV4
571 bool "Support for the Loongson Advance !! 369 bool
572 depends on CPU_HAS_LSX !! 370 default y if ALPHA_LYNX && !ALPHA_EV5
573 depends on AS_HAS_LASX_EXTENSION !! 371
574 help !! 372 config ALPHA_CIA
575 Loongson Advanced SIMD Extension (LA !! 373 bool
576 registers and a set of SIMD instruct !! 374 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
577 option is enabled the kernel will su !! 375 default y
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 <<
582 376
583 If unsure, say Y. !! 377 config ALPHA_EV56
>> 378 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 379 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
584 380
585 config CPU_HAS_LBT !! 381 config ALPHA_EV56
586 bool "Support for the Loongson Binary !! 382 prompt "EV56 CPU (speed >= 333MHz)?"
587 depends on AS_HAS_LBT_EXTENSION !! 383 depends on ALPHA_NORITAKE || ALPHA_PRIMO
>> 384
>> 385 config ALPHA_EV56
>> 386 prompt "EV56 CPU (speed >= 400MHz)?"
>> 387 depends on ALPHA_RAWHIDE
>> 388
>> 389 config ALPHA_PRIMO
>> 390 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 391 depends on ALPHA_NORITAKE || ALPHA_MIKASA
588 help 392 help
589 Loongson Binary Translation (LBT) in !! 393 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
590 to SCR3), x86/ARM eflags (eflags) an <<
591 Enabling this option allows the kern <<
592 specific to LBT. <<
593 394
594 If you want to use this feature, suc !! 395 config ALPHA_GAMMA
595 Translator (LAT), say Y. !! 396 bool "EV5 CPU(s) (model 5/xxx)?"
>> 397 depends on ALPHA_SABLE
>> 398 help
>> 399 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
596 400
597 config CPU_HAS_PREFETCH !! 401 config ALPHA_GAMMA
598 bool 402 bool
>> 403 depends on ALPHA_LYNX
599 default y 404 default y
600 405
601 config ARCH_SUPPORTS_KEXEC !! 406 config ALPHA_T2
602 def_bool y !! 407 bool
>> 408 depends on ALPHA_SABLE || ALPHA_LYNX
>> 409 default y
603 410
604 config ARCH_SUPPORTS_CRASH_DUMP !! 411 config ALPHA_PYXIS
605 def_bool y !! 412 bool
>> 413 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 414 default y
606 415
607 config ARCH_SELECTS_CRASH_DUMP !! 416 config ALPHA_EV6
608 def_bool y !! 417 bool
609 depends on CRASH_DUMP !! 418 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
610 select RELOCATABLE !! 419 default y
611 420
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 421 config ALPHA_TSUNAMI
613 def_bool CRASH_RESERVE !! 422 bool
>> 423 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 424 default y
614 425
615 config RELOCATABLE !! 426 config ALPHA_EV67
616 bool "Relocatable kernel" !! 427 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
617 select ARCH_HAS_RELR !! 428 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
618 help 429 help
619 This builds the kernel as a Position !! 430 Is this a machine based on the EV67 core? If in doubt, select N here
620 which retains all relocation metadat !! 431 and the machine will be treated as an EV6.
621 the kernel binary at runtime to a di <<
622 its link address. <<
623 432
624 config RANDOMIZE_BASE !! 433 config ALPHA_MCPCIA
625 bool "Randomize the address of the ker !! 434 bool
626 depends on RELOCATABLE !! 435 depends on ALPHA_RAWHIDE
627 help !! 436 default y
628 Randomizes the physical and virtual !! 437
629 kernel image is loaded, as a securi !! 438 config ALPHA_POLARIS
630 deters exploit attempts relying on !! 439 bool
631 of kernel internals. !! 440 depends on ALPHA_RX164
>> 441 default y
632 442
633 The kernel will be offset by up to !! 443 config ALPHA_IRONGATE
>> 444 bool
>> 445 depends on ALPHA_NAUTILUS
>> 446 default y
634 447
635 If unsure, say N. !! 448 config GENERIC_HWEIGHT
>> 449 bool
>> 450 default y if !ALPHA_EV67
636 451
637 config RANDOMIZE_BASE_MAX_OFFSET !! 452 config ALPHA_AVANTI
638 hex "Maximum KASLR offset" if EXPERT !! 453 bool
639 depends on RANDOMIZE_BASE !! 454 depends on ALPHA_XL || ALPHA_AVANTI_CH
640 range 0x0 0x10000000 !! 455 default y
641 default "0x01000000" <<
642 help 456 help
643 When KASLR is active, this provides !! 457 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
644 be applied to the kernel image. It s !! 458 Alphas. Info at
645 amount of physical RAM available in !! 459 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
646 460
647 This is limited by the size of the l !! 461 config ALPHA_BROKEN_IRQ_MASK
>> 462 bool
>> 463 depends on ALPHA_GENERIC || ALPHA_PC164
>> 464 default y
>> 465
>> 466 config VGA_HOSE
>> 467 bool
>> 468 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 469 default y
>> 470 help
>> 471 Support VGA on an arbitrary hose; needed for several platforms
>> 472 which always have multiple hoses, and whose consoles support it.
648 473
649 source "kernel/livepatch/Kconfig" <<
650 474
651 config PARAVIRT !! 475 config ALPHA_QEMU
652 bool "Enable paravirtualization code" !! 476 bool "Run under QEMU emulation"
653 depends on AS_HAS_LVZ_EXTENSION !! 477 depends on !ALPHA_GENERIC
654 help 478 help
655 This changes the kernel so it can mo !! 479 Assume the presence of special features supported by QEMU PALcode
656 under a hypervisor, potentially impr !! 480 that reduce the overhead of system emulation.
657 over full virtualization. However, !! 481
658 the kernel is theoretically slower a !! 482 Generic kernels will auto-detect QEMU. But when building a
>> 483 system-specific kernel, the assumption is that we want to
>> 484 eliminate as many runtime tests as possible.
>> 485
>> 486 If unsure, say N.
>> 487
659 488
660 config PARAVIRT_TIME_ACCOUNTING !! 489 config ALPHA_SRM
661 bool "Paravirtual steal time accountin !! 490 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
662 depends on PARAVIRT !! 491 depends on TTY
>> 492 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
663 help 493 help
664 Select this option to enable fine gr !! 494 There are two different types of booting firmware on Alphas: SRM,
665 accounting. Time spent executing oth !! 495 which is command line driven, and ARC, which uses menus and arrow
666 the current vCPU is discounted from !! 496 keys. Details about the Linux/Alpha booting process are contained in
667 that, there can be a small performan !! 497 the Linux/Alpha FAQ, accessible on the WWW from
>> 498 <http://www.alphalinux.org/>.
668 499
669 If in doubt, say N here. !! 500 The usual way to load Linux on an Alpha machine is to use MILO
>> 501 (a bootloader that lets you pass command line parameters to the
>> 502 kernel just like lilo does for the x86 architecture) which can be
>> 503 loaded either from ARC or can be installed directly as a permanent
>> 504 firmware replacement from floppy (which requires changing a certain
>> 505 jumper on the motherboard). If you want to do either of these, say N
>> 506 here. If MILO doesn't work on your system (true for Jensen
>> 507 motherboards), you can bypass it altogether and boot Linux directly
>> 508 from an SRM console; say Y here in order to do that. Note that you
>> 509 won't be able to boot from an IDE disk using SRM.
670 510
671 endmenu !! 511 If unsure, say N.
672 512
673 config ARCH_SELECT_MEMORY_MODEL !! 513 config ARCH_MAY_HAVE_PC_FDC
674 def_bool y 514 def_bool y
675 515
676 config ARCH_FLATMEM_ENABLE !! 516 config SMP
677 def_bool y !! 517 bool "Symmetric multi-processing support"
678 depends on !NUMA !! 518 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 519 help
>> 520 This enables support for systems with more than one CPU. If you have
>> 521 a system with only one CPU, say N. If you have a system with more
>> 522 than one CPU, say Y.
>> 523
>> 524 If you say N here, the kernel will run on uni- and multiprocessor
>> 525 machines, but will use only one CPU of a multiprocessor machine. If
>> 526 you say Y here, the kernel will run on many, but not all,
>> 527 uniprocessor machines. On a uniprocessor machine, the kernel
>> 528 will run faster if you say N here.
>> 529
>> 530 See also the SMP-HOWTO available at
>> 531 <https://www.tldp.org/docs.html#howto>.
>> 532
>> 533 If you don't know what to do here, say N.
>> 534
>> 535 config NR_CPUS
>> 536 int "Maximum number of CPUs (2-32)"
>> 537 range 2 32
>> 538 depends on SMP
>> 539 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 540 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
>> 541 help
>> 542 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 543 with working support have a maximum of 4 CPUs.
679 544
680 config ARCH_SPARSEMEM_ENABLE 545 config ARCH_SPARSEMEM_ENABLE
681 def_bool y !! 546 bool "Sparse Memory Support"
682 select SPARSEMEM_VMEMMAP_ENABLE <<
683 help 547 help
684 Say Y to support efficient handling !! 548 Say Y to support efficient handling of discontiguous physical memory,
685 for architectures which are either N !! 549 for systems that have huge holes in the physical address space.
686 or have huge holes in the physical a <<
687 See <file:Documentation/mm/numa.rst> <<
688 550
689 config ARCH_MEMORY_PROBE !! 551 config ALPHA_WTINT
690 def_bool y !! 552 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
691 depends on MEMORY_HOTPLUG !! 553 default y if ALPHA_QEMU
>> 554 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 555 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 556 default y if SMP
>> 557 help
>> 558 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 559 to sleep until the next interrupt. This may reduce the power
>> 560 consumed, and the heat produced by the computer. However, it has
>> 561 the side effect of making the cycle counter unreliable as a timing
>> 562 device across the sleep.
692 563
693 config MMU !! 564 For emulation under QEMU, definitely say Y here, as we have other
>> 565 mechanisms for measuring time than the cycle counter.
>> 566
>> 567 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
>> 568 MILO, sleep mode is not supported so you might as well say N here.
>> 569
>> 570 For SMP systems we cannot use the cycle counter for timing anyway,
>> 571 so you might as well say Y here.
>> 572
>> 573 If unsure, say N.
>> 574
>> 575 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 576 config ALPHA_LARGE_VMALLOC
694 bool 577 bool
695 default y !! 578 help
>> 579 Process creation and other aspects of virtual memory management can
>> 580 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 581 allocations. This equates to about 8GB.
696 582
697 config ARCH_MMAP_RND_BITS_MIN !! 583 Under normal circumstances, this is so far and above what is needed
698 default 12 !! 584 as to be laughable. However, there are certain applications (such
>> 585 as benchmark-grade in-kernel web serving) that can make use of as
>> 586 much vmalloc space as is available.
699 587
700 config ARCH_MMAP_RND_BITS_MAX !! 588 Say N unless you know you need gobs and gobs of vmalloc space.
701 default 18 <<
702 589
703 config ARCH_SUPPORTS_UPROBES !! 590 config VERBOSE_MCHECK
704 def_bool y !! 591 bool "Verbose Machine Checks"
705 592
706 config KASAN_SHADOW_OFFSET !! 593 config VERBOSE_MCHECK_ON
707 hex !! 594 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
708 default 0x0 !! 595 depends on VERBOSE_MCHECK
709 depends on KASAN !! 596 default 1
>> 597 help
>> 598 This option allows the default printing mode to be set, and then
>> 599 possibly overridden by a boot command argument.
710 600
711 menu "Power management options" !! 601 For example, if one wanted the option of printing verbose
>> 602 machine checks, but wanted the default to be as if verbose
>> 603 machine check printing was turned off, then one would choose
>> 604 the printing mode to be 0. Then, upon reboot, one could add
>> 605 the boot command line "verbose_mcheck=1" to get the normal
>> 606 verbose machine check printing, or "verbose_mcheck=2" to get
>> 607 the maximum information available.
712 608
713 config ARCH_SUSPEND_POSSIBLE !! 609 Take the default (1) unless you want more control or more info.
714 def_bool y <<
715 610
716 config ARCH_HIBERNATION_POSSIBLE !! 611 choice
717 def_bool y !! 612 prompt "Timer interrupt frequency (HZ)?"
>> 613 default HZ_128 if ALPHA_QEMU
>> 614 default HZ_1200 if ALPHA_RAWHIDE
>> 615 default HZ_1024
>> 616 help
>> 617 The frequency at which timer interrupts occur. A high frequency
>> 618 minimizes latency, whereas a low frequency minimizes overhead of
>> 619 process accounting. The later effect is especially significant
>> 620 when being run under QEMU.
>> 621
>> 622 Note that some Alpha hardware cannot change the interrupt frequency
>> 623 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 624
>> 625 config HZ_32
>> 626 bool "32 Hz"
>> 627 config HZ_64
>> 628 bool "64 Hz"
>> 629 config HZ_128
>> 630 bool "128 Hz"
>> 631 config HZ_256
>> 632 bool "256 Hz"
>> 633 config HZ_1024
>> 634 bool "1024 Hz"
>> 635 config HZ_1200
>> 636 bool "1200 Hz"
>> 637 endchoice
>> 638
>> 639 config HZ
>> 640 int
>> 641 default 32 if HZ_32
>> 642 default 64 if HZ_64
>> 643 default 128 if HZ_128
>> 644 default 256 if HZ_256
>> 645 default 1200 if HZ_1200
>> 646 default 1024
>> 647
>> 648 config SRM_ENV
>> 649 tristate "SRM environment through procfs"
>> 650 depends on PROC_FS
>> 651 help
>> 652 If you enable this option, a subdirectory inside /proc called
>> 653 /proc/srm_environment will give you access to the all important
>> 654 SRM environment variables (those which have a name) and also
>> 655 to all others (by their internal number).
>> 656
>> 657 SRM is something like a BIOS for Alpha machines. There are some
>> 658 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 659 support (hey, that's not SRM!).
>> 660
>> 661 Despite the fact that this driver doesn't work on all Alphas (but
>> 662 only on those which have SRM as their firmware), it's save to
>> 663 build it even if your particular machine doesn't know about SRM
>> 664 (or if you intend to compile a generic kernel). It will simply
>> 665 not create those subdirectory in /proc (and give you some warning,
>> 666 of course).
718 667
719 source "kernel/power/Kconfig" !! 668 This driver is also available as a module and will be called
720 source "drivers/acpi/Kconfig" !! 669 srm_env then.
721 source "drivers/cpufreq/Kconfig" <<
722 670
723 endmenu 671 endmenu
724 672
725 source "arch/loongarch/kvm/Kconfig" !! 673 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 674 # but we also need it if VGA_HOSE is set
>> 675 config DUMMY_CONSOLE
>> 676 bool
>> 677 depends on VGA_HOSE
>> 678 default y
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