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 <<
6 select ACPI_GENERIC_GSI if ACPI <<
7 select ACPI_MCFG if ACPI <<
8 select ACPI_HOTPLUG_CPU if ACPI_PROCES <<
9 select ACPI_PPTT if ACPI <<
10 select ACPI_SYSTEM_POWER_STATES_SUPPOR <<
11 select ARCH_BINFMT_ELF_STATE <<
12 select ARCH_DISABLE_KASAN_INLINE <<
13 select ARCH_ENABLE_MEMORY_HOTPLUG <<
14 select ARCH_ENABLE_MEMORY_HOTREMOVE <<
15 select ARCH_ENABLE_THP_MIGRATION if TR <<
16 select ARCH_HAS_ACPI_TABLE_UPGRADE <<
17 select ARCH_HAS_CPU_FINALIZE_INIT <<
18 select ARCH_HAS_CURRENT_STACK_POINTER <<
19 select ARCH_HAS_DEBUG_VM_PGTABLE <<
20 select ARCH_HAS_FAST_MULTIPLIER <<
21 select ARCH_HAS_FORTIFY_SOURCE <<
22 select ARCH_HAS_KCOV <<
23 select ARCH_HAS_KERNEL_FPU_SUPPORT if <<
24 select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS <<
25 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
26 select ARCH_HAS_PTE_DEVMAP <<
27 select ARCH_HAS_PTE_SPECIAL <<
28 select ARCH_HAS_SET_MEMORY <<
29 select ARCH_HAS_SET_DIRECT_MAP <<
30 select ARCH_HAS_TICK_BROADCAST if GENE <<
31 select ARCH_INLINE_READ_LOCK if !PREEM <<
32 select ARCH_INLINE_READ_LOCK_BH if !PR <<
33 select ARCH_INLINE_READ_LOCK_IRQ if !P <<
34 select ARCH_INLINE_READ_LOCK_IRQSAVE i <<
35 select ARCH_INLINE_READ_UNLOCK if !PRE <<
36 select ARCH_INLINE_READ_UNLOCK_BH if ! <<
37 select ARCH_INLINE_READ_UNLOCK_IRQ if <<
38 select ARCH_INLINE_READ_UNLOCK_IRQREST <<
39 select ARCH_INLINE_WRITE_LOCK if !PREE <<
40 select ARCH_INLINE_WRITE_LOCK_BH if !P <<
41 select ARCH_INLINE_WRITE_LOCK_IRQ if ! <<
42 select ARCH_INLINE_WRITE_LOCK_IRQSAVE <<
43 select ARCH_INLINE_WRITE_UNLOCK if !PR <<
44 select ARCH_INLINE_WRITE_UNLOCK_BH if <<
45 select ARCH_INLINE_WRITE_UNLOCK_IRQ if <<
46 select ARCH_INLINE_WRITE_UNLOCK_IRQRES <<
47 select ARCH_INLINE_SPIN_TRYLOCK if !PR <<
48 select ARCH_INLINE_SPIN_TRYLOCK_BH if <<
49 select ARCH_INLINE_SPIN_LOCK if !PREEM <<
50 select ARCH_INLINE_SPIN_LOCK_BH if !PR <<
51 select ARCH_INLINE_SPIN_LOCK_IRQ if !P <<
52 select ARCH_INLINE_SPIN_LOCK_IRQSAVE i <<
53 select ARCH_INLINE_SPIN_UNLOCK if !PRE <<
54 select ARCH_INLINE_SPIN_UNLOCK_BH if ! <<
55 select ARCH_INLINE_SPIN_UNLOCK_IRQ if <<
56 select ARCH_INLINE_SPIN_UNLOCK_IRQREST <<
57 select ARCH_KEEP_MEMBLOCK <<
58 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select ARCH_MIGHT_HAVE_PC_PARPORT
59 select ARCH_MIGHT_HAVE_PC_SERIO 6 select ARCH_MIGHT_HAVE_PC_SERIO
60 select ARCH_SPARSEMEM_ENABLE !! 7 select ARCH_NO_PREEMPT
61 select ARCH_STACKWALK !! 8 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 9 select ARCH_USE_CMPXCHG_LOCKREF
71 select ARCH_USE_QUEUED_RWLOCKS !! 10 select FORCE_PCI if !ALPHA_JENSEN
72 select ARCH_USE_QUEUED_SPINLOCKS !! 11 select PCI_DOMAINS if PCI
73 select ARCH_WANT_DEFAULT_BPF_JIT !! 12 select PCI_SYSCALL if PCI
74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ !! 13 select HAVE_AOUT
75 select ARCH_WANT_LD_ORPHAN_WARN !! 14 select HAVE_ASM_MODVERSIONS
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM !! 15 select HAVE_IDE
77 select ARCH_WANTS_NO_INSTR !! 16 select HAVE_OPROFILE
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC !! 17 select HAVE_PCSPKR_PLATFORM
79 select BUILDTIME_TABLE_SORT !! 18 select HAVE_PERF_EVENTS
80 select COMMON_CLK !! 19 select NEED_DMA_MAP_STATE
81 select CPU_PM !! 20 select NEED_SG_DMA_LENGTH
82 select EFI !! 21 select VIRT_TO_BUS
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 22 select GENERIC_IRQ_PROBE
>> 23 select GENERIC_PCI_IOMAP if PCI
>> 24 select AUTO_IRQ_AFFINITY if SMP
94 select GENERIC_IRQ_SHOW 25 select GENERIC_IRQ_SHOW
95 select GENERIC_LIB_ASHLDI3 !! 26 select ARCH_WANT_IPC_PARSE_VERSION
96 select GENERIC_LIB_ASHRDI3 !! 27 select ARCH_HAVE_NMI_SAFE_CMPXCHG
97 select GENERIC_LIB_CMPDI2 !! 28 select AUDIT_ARCH
98 select GENERIC_LIB_LSHRDI3 !! 29 select GENERIC_CLOCKEVENTS
99 select GENERIC_LIB_UCMPDI2 !! 30 select GENERIC_CPU_VULNERABILITIES
100 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
101 select GENERIC_PCI_IOMAP <<
102 select GENERIC_SCHED_CLOCK <<
103 select GENERIC_SMP_IDLE_THREAD 31 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL !! 32 select GENERIC_STRNCPY_FROM_USER
105 select GENERIC_VDSO_TIME_NS !! 33 select GENERIC_STRNLEN_USER
106 select GPIOLIB <<
107 select HAS_IOPORT <<
108 select HAVE_ARCH_AUDITSYSCALL 34 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 35 select HAVE_MOD_ARCH_SPECIFIC
152 select HAVE_NMI !! 36 select MODULES_USE_ELF_RELA
153 select HAVE_OBJTOOL if AS_HAS_EXPLICIT !! 37 select ODD_RT_SIGACTION
154 select HAVE_PCI !! 38 select OLD_SIGSUSPEND
155 select HAVE_PERF_EVENTS !! 39 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
156 select HAVE_PERF_REGS !! 40 select MMU_GATHER_NO_RANGE
157 select HAVE_PERF_USER_STACK_DUMP !! 41 help
158 select HAVE_PREEMPT_DYNAMIC_KEY !! 42 The Alpha is a 64-bit general-purpose processor designed and
159 select HAVE_REGS_AND_STACK_ACCESS_API !! 43 marketed by the Digital Equipment Corporation of blessed memory,
160 select HAVE_RELIABLE_STACKTRACE if UNW !! 44 now Hewlett-Packard. The Alpha Linux project has a home page at
161 select HAVE_RETHOOK !! 45 <http://www.alphalinux.org/>.
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 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 !! 59 bool
237 # are shared between architectures, and specif !! 60 default n
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 61
247 config PGTABLE_2LEVEL !! 62 config GENERIC_CALIBRATE_DELAY
248 bool 63 bool
>> 64 default y
249 65
250 config PGTABLE_3LEVEL !! 66 config ZONE_DMA
251 bool 67 bool
>> 68 default y
252 69
253 config PGTABLE_4LEVEL !! 70 config GENERIC_ISA_DMA
254 bool 71 bool
>> 72 default y
255 73
256 config PGTABLE_LEVELS 74 config PGTABLE_LEVELS
257 int 75 int
258 default 2 if PGTABLE_2LEVEL !! 76 default 3
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 77
262 config SCHED_OMIT_FRAME_POINTER !! 78 config AUDIT_ARCH
263 bool 79 bool
264 default y <<
265 <<
266 config AS_HAS_EXPLICIT_RELOCS <<
267 def_bool $(as-instr,x:pcalau12i \$t0$( <<
268 80
269 config AS_HAS_FCSR_CLASS !! 81 menu "System setup"
270 def_bool $(as-instr,movfcsr2gr \$t0$(c <<
271 82
272 config AS_HAS_THIN_ADD_SUB !! 83 choice
273 def_bool $(cc-option,-Wa$(comma)-mthin !! 84 prompt "Alpha system type"
>> 85 default ALPHA_GENERIC
>> 86 ---help---
>> 87 This is the system type of your hardware. A "generic" kernel will
>> 88 run on any supported Alpha system. However, if you configure a
>> 89 kernel for your specific system, it will be faster and smaller.
274 90
275 config AS_HAS_LSX_EXTENSION !! 91 To find out what type of Alpha system you have, you may want to
276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 92 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 93 <http://www.alphalinux.org/>. In summary:
277 94
278 config AS_HAS_LASX_EXTENSION !! 95 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
279 def_bool $(as-instr,xvld \$xr0$(comma) !! 96 Alpha-XL XL-233, XL-266
>> 97 AlphaBook1 Alpha laptop
>> 98 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 99 Cabriolet AlphaPC64, AlphaPCI64
>> 100 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 101 EB164 EB164 21164 evaluation board
>> 102 EB64+ EB64+ 21064 evaluation board
>> 103 EB66 EB66 21066 evaluation board
>> 104 EB66+ EB66+ 21066 evaluation board
>> 105 Jensen DECpc 150, DEC 2000 models 300, 500
>> 106 LX164 AlphaPC164-LX
>> 107 Lynx AS 2100A
>> 108 Miata Personal Workstation 433/500/600 a/au
>> 109 Marvel AlphaServer ES47 / ES80 / GS1280
>> 110 Mikasa AS 1000
>> 111 Noname AXPpci33, UDB (Multia)
>> 112 Noritake AS 1000A, AS 600A, AS 800
>> 113 PC164 AlphaPC164
>> 114 Rawhide AS 1200, AS 4000, AS 4100
>> 115 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 116 SX164 AlphaPC164-SX
>> 117 Sable AS 2000, AS 2100
>> 118 Shark DS 20L
>> 119 Takara Takara (OEM)
>> 120 Titan AlphaServer ES45 / DS25 / DS15
>> 121 Wildfire AlphaServer GS 40/80/160/320
280 122
281 config AS_HAS_LBT_EXTENSION !! 123 If you don't know what to do, choose "generic".
282 def_bool $(as-instr,movscr2gr \$a0$(co <<
283 124
284 config AS_HAS_LVZ_EXTENSION !! 125 config ALPHA_GENERIC
285 def_bool $(as-instr,hvcl 0) !! 126 bool "Generic"
>> 127 depends on TTY
>> 128 select HAVE_EISA
>> 129 help
>> 130 A generic kernel will run on all supported Alpha hardware.
286 131
287 menu "Kernel type and options" !! 132 config ALPHA_ALCOR
>> 133 bool "Alcor/Alpha-XLT"
>> 134 select HAVE_EISA
>> 135 help
>> 136 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 137 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 138 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 139 controller (256-bit memory bus) and a PCI interface. It also does
>> 140 all the work required to support an external Bcache and to maintain
>> 141 memory coherence when a PCI device DMAs into (or out of) memory.
288 142
289 source "kernel/Kconfig.hz" !! 143 config ALPHA_XL
>> 144 bool "Alpha-XL"
>> 145 help
>> 146 XL-233 and XL-266-based Alpha systems.
290 147
291 choice !! 148 config ALPHA_BOOK1
292 prompt "Page Table Layout" !! 149 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 150 help
345 This option selects 64KB page size w !! 151 Dec AlphaBook1/Burns Alpha-based laptops.
346 support a maximum of 55 bits of appl <<
347 152
348 endchoice !! 153 config ALPHA_AVANTI_CH
>> 154 bool "Avanti"
349 155
350 config CMDLINE !! 156 config ALPHA_CABRIOLET
351 string "Built-in kernel command line" !! 157 bool "Cabriolet"
352 help 158 help
353 For most platforms, the arguments fo !! 159 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
354 are provided at run-time, during boo !! 160 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
355 where either no arguments are being !! 161 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
356 arguments are insufficient or even i !! 162 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 <<
360 163
361 choice !! 164 config ALPHA_DP264
362 prompt "Kernel command line type" !! 165 bool "DP264"
363 default CMDLINE_BOOTLOADER <<
364 help 166 help
365 Choose how the kernel will handle th !! 167 Various 21264 systems with the tsunami core logic chipset.
366 line. !! 168 API Networks: 264DP, UP2000(+), CS20;
>> 169 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
367 170
368 config CMDLINE_BOOTLOADER !! 171 config ALPHA_EB164
369 bool "Use bootloader kernel arguments !! 172 bool "EB164"
370 help 173 help
371 Prefer the command-line passed by th !! 174 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
372 Use the built-in command line as fal !! 175 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
373 during boot. This is the default beh !! 176 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
374 !! 177 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
375 config CMDLINE_EXTEND !! 178 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
376 bool "Use built-in to extend bootloade !! 179 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. <<
390 180
391 endchoice !! 181 config ALPHA_EB64P_CH
>> 182 bool "EB64+"
392 183
393 config BUILTIN_DTB !! 184 config ALPHA_EB66
394 bool "Enable built-in dtb in kernel" !! 185 bool "EB66"
395 depends on OF <<
396 help 186 help
397 Some existing systems do not provide !! 187 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
398 the kernel at boot time. Let's provi !! 188 identical to EB64+. Baby PC-AT size. Runs from standard PC power
399 kernel, keyed by the dts filename, c !! 189 supply. The EB66 schematic was published as a marketing poster
>> 190 advertising the 21066 as "the first microprocessor in the world with
>> 191 embedded PCI".
400 192
401 Built-in DTBs are generic enough and !! 193 config ALPHA_EB66P
>> 194 bool "EB66+"
>> 195 help
>> 196 Later variant of the EB66 board.
402 197
403 config BUILTIN_DTB_NAME !! 198 config ALPHA_EIGER
404 string "Source file for built-in dtb" !! 199 bool "Eiger"
405 depends on BUILTIN_DTB <<
406 help 200 help
407 Base name (without suffix, relative !! 201 Apparently an obscure OEM single-board computer based on the
408 for the DTS file that will be used t !! 202 Typhoon/Tsunami chipset family. Information on it is scanty.
409 the kernel. <<
410 203
411 config DMI !! 204 config ALPHA_JENSEN
412 bool "Enable DMI scanning" !! 205 bool "Jensen"
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA !! 206 depends on BROKEN
414 default y !! 207 select HAVE_EISA
415 help 208 help
416 This enables SMBIOS/DMI feature for !! 209 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
417 DMI to identify machine quirks. !! 210 of the first-generation Alpha systems. A number of these systems
>> 211 seem to be available on the second- hand market. The Jensen is a
>> 212 floor-standing tower system which originally used a 150MHz 21064 It
>> 213 used programmable logic to interface a 486 EISA I/O bridge to the
>> 214 CPU.
418 215
419 config EFI !! 216 config ALPHA_LX164
420 bool "EFI runtime service support" !! 217 bool "LX164"
421 select UCS2_STRING <<
422 select EFI_RUNTIME_WRAPPERS <<
423 help 218 help
424 This enables the kernel to use EFI r !! 219 A technical overview of this board is available at
425 available (such as the EFI variable !! 220 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
426 221
427 config EFI_STUB !! 222 config ALPHA_LYNX
428 bool "EFI boot stub support" !! 223 bool "Lynx"
429 default y !! 224 select HAVE_EISA
430 depends on EFI <<
431 select EFI_GENERIC_STUB <<
432 help 225 help
433 This kernel feature allows the kerne !! 226 AlphaServer 2100A-based systems.
434 EFI firmware without the use of a bo <<
435 227
436 config SCHED_SMT !! 228 config ALPHA_MARVEL
437 bool "SMT scheduler support" !! 229 bool "Marvel"
438 depends on SMP <<
439 default y <<
440 help 230 help
441 Improves scheduler's performance whe !! 231 AlphaServer ES47 / ES80 / GS1280 based on EV7.
442 threads in one physical core. <<
443 232
444 config SMP !! 233 config ALPHA_MIATA
445 bool "Multi-Processing support" !! 234 bool "Miata"
>> 235 select HAVE_EISA
446 help 236 help
447 This enables support for systems wit !! 237 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
448 a system with only one CPU, say N. I !! 238 or 600au).
449 than one CPU, say Y. <<
450 239
451 If you say N here, the kernel will r !! 240 config ALPHA_MIKASA
452 machines, but will use only one CPU !! 241 bool "Mikasa"
453 you say Y here, the kernel will run !! 242 help
454 uniprocessor machines. On a uniproce !! 243 AlphaServer 1000-based Alpha systems.
455 will run faster if you say N here. <<
456 244
457 See also the SMP-HOWTO available at !! 245 config ALPHA_NAUTILUS
>> 246 bool "Nautilus"
>> 247 help
>> 248 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
458 249
459 If you don't know what to do here, s !! 250 config ALPHA_NONAME_CH
>> 251 bool "Noname"
460 252
461 config HOTPLUG_CPU !! 253 config ALPHA_NORITAKE
462 bool "Support for hot-pluggable CPUs" !! 254 bool "Noritake"
463 depends on SMP !! 255 select HAVE_EISA
464 select GENERIC_IRQ_MIGRATION <<
465 help 256 help
466 Say Y here to allow turning CPUs off !! 257 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
467 controlled through /sys/devices/syst !! 258 systems.
468 (Note: power management support will <<
469 automatically on SMP systems. ) <<
470 Say N if you want to disable CPU hot <<
471 259
472 config NR_CPUS !! 260 config ALPHA_PC164
473 int "Maximum number of CPUs (2-256)" !! 261 bool "PC164"
474 range 2 256 !! 262
475 depends on SMP !! 263 config ALPHA_P2K
476 default "64" !! 264 bool "Platform2000"
>> 265
>> 266 config ALPHA_RAWHIDE
>> 267 bool "Rawhide"
>> 268 select HAVE_EISA
477 help 269 help
478 This allows you to specify the maxim !! 270 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
479 kernel will support. !! 271 See HOWTO at
>> 272 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
480 273
481 config NUMA !! 274 config ALPHA_RUFFIAN
482 bool "NUMA Support" !! 275 bool "Ruffian"
483 select SMP <<
484 help 276 help
485 Say Y to compile the kernel with NUM !! 277 Samsung APC164UX. There is a page on known problems and workarounds
486 support. This option improves perfo !! 278 at <http://www.alphalinux.org/faq/FAQ-11.html>.
487 than one NUMA node; on single node s <<
488 to leave it disabled. <<
489 279
490 config NODES_SHIFT !! 280 config ALPHA_RX164
491 int !! 281 bool "RX164"
492 default "6" <<
493 depends on NUMA <<
494 282
495 config ARCH_FORCE_MAX_ORDER !! 283 config ALPHA_SX164
496 int "Maximum zone order" !! 284 bool "SX164"
497 default "13" if PAGE_SIZE_64KB !! 285
498 default "11" if PAGE_SIZE_16KB !! 286 config ALPHA_SABLE
499 default "10" !! 287 bool "Sable"
>> 288 select HAVE_EISA
500 help 289 help
501 The kernel memory allocator divides !! 290 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. <<
507 291
508 The page size is not necessarily 4KB !! 292 config ALPHA_SHARK
509 when choosing a value for this optio !! 293 bool "Shark"
510 294
511 config ARCH_IOREMAP !! 295 config ALPHA_TAKARA
512 bool "Enable LoongArch DMW-based iorem !! 296 bool "Takara"
513 help 297 help
514 We use generic TLB-based ioremap() b !! 298 Alpha 11164-based OEM single-board computer.
515 protection support. However, you can <<
516 ioremap() for better performance. <<
517 299
518 config ARCH_WRITECOMBINE !! 300 config ALPHA_TITAN
519 bool "Enable WriteCombine (WUC) for io !! 301 bool "Titan"
520 help 302 help
521 LoongArch maintains cache coherency !! 303 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). <<
526 304
527 This means WUC can only used for wri !! 305 config ALPHA_WILDFIRE
528 this option is disabled by default, !! 306 bool "Wildfire"
529 SUC for ioremap(). You can enable th !! 307 help
530 to run on hardware without this bug. !! 308 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
531 309
532 You can override this setting via wr !! 310 endchoice
533 311
534 config ARCH_STRICT_ALIGN !! 312 # clear all implied options (don't want default values for those):
535 bool "Enable -mstrict-align to prevent !! 313 # Most of these machines have ISA slots; not exactly sure which don't,
>> 314 # and this doesn't activate hordes of code, so do it always.
>> 315 config ISA
>> 316 bool
536 default y 317 default y
537 help 318 help
538 Not all LoongArch cores support h/w !! 319 Find out whether you have ISA slots on your motherboard. ISA is the
539 -mstrict-align build parameter to pr !! 320 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 321 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 322 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 323 newer boards don't support it. If you have ISA, say Y, otherwise N.
540 324
541 CPUs with h/w unaligned access suppo !! 325 config ISA_DMA_API
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 326 bool
>> 327 default y
543 328
544 CPUs without h/w unaligned access su !! 329 config ALPHA_NONAME
545 Loongson-2K500/2K1000. !! 330 bool
>> 331 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 332 default y
>> 333 help
>> 334 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
>> 335 UDB). This design was produced by Digital's Technical OEM (TOEM)
>> 336 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 337 is a baby-AT size, and runs from a standard PC power supply. It has
>> 338 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 339 2 versions, with either PS/2 or large DIN connectors for the
>> 340 keyboard.
546 341
547 This option is enabled by default to !! 342 config ALPHA_EV4
548 on all LoongArch systems. But you ca !! 343 bool
549 to run kernel only on systems with h !! 344 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
550 order to optimise for performance. !! 345 default y if !ALPHA_LYNX
551 346
552 config CPU_HAS_FPU !! 347 config ALPHA_LCA
553 bool 348 bool
>> 349 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
554 default y 350 default y
555 351
556 config CPU_HAS_LSX !! 352 config ALPHA_APECS
557 bool "Support for the Loongson SIMD Ex !! 353 bool
558 depends on AS_HAS_LSX_EXTENSION !! 354 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 355 default y
>> 356
>> 357 config ALPHA_EB64P
>> 358 bool
>> 359 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 360 default y
559 help 361 help
560 Loongson SIMD Extension (LSX) introd !! 362 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
561 and a set of SIMD instructions to op !! 363 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
562 is enabled the kernel will support a !! 364 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
563 vector register contexts. If you kno !! 365 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
564 running on CPUs which do not support !! 366 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
565 not be making use of it then you may !! 367 Runs from standard PC power supply.
566 the size & complexity of your kernel <<
567 368
568 If unsure, say Y. !! 369 config ALPHA_EV5
>> 370 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 371 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
569 372
570 config CPU_HAS_LASX !! 373 config ALPHA_EV4
571 bool "Support for the Loongson Advance !! 374 bool
572 depends on CPU_HAS_LSX !! 375 default y if ALPHA_LYNX && !ALPHA_EV5
573 depends on AS_HAS_LASX_EXTENSION <<
574 help <<
575 Loongson Advanced SIMD Extension (LA <<
576 registers and a set of SIMD instruct <<
577 option is enabled the kernel will su <<
578 vector register contexts. If you kno <<
579 running on CPUs which do not support <<
580 not be making use of it then you may <<
581 the size & complexity of your kernel <<
582 376
583 If unsure, say Y. !! 377 config ALPHA_CIA
>> 378 bool
>> 379 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
>> 380 default y
>> 381
>> 382 config ALPHA_EV56
>> 383 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 384 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
>> 385
>> 386 config ALPHA_EV56
>> 387 prompt "EV56 CPU (speed >= 333MHz)?"
>> 388 depends on ALPHA_NORITAKE || ALPHA_PRIMO
584 389
585 config CPU_HAS_LBT !! 390 config ALPHA_EV56
586 bool "Support for the Loongson Binary !! 391 prompt "EV56 CPU (speed >= 400MHz)?"
587 depends on AS_HAS_LBT_EXTENSION !! 392 depends on ALPHA_RAWHIDE
>> 393
>> 394 config ALPHA_PRIMO
>> 395 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 396 depends on ALPHA_NORITAKE || ALPHA_MIKASA
588 help 397 help
589 Loongson Binary Translation (LBT) in !! 398 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. <<
593 399
594 If you want to use this feature, suc !! 400 config ALPHA_GAMMA
595 Translator (LAT), say Y. !! 401 bool "EV5 CPU(s) (model 5/xxx)?"
>> 402 depends on ALPHA_SABLE
>> 403 help
>> 404 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
596 405
597 config CPU_HAS_PREFETCH !! 406 config ALPHA_GAMMA
598 bool 407 bool
>> 408 depends on ALPHA_LYNX
599 default y 409 default y
600 410
601 config ARCH_SUPPORTS_KEXEC !! 411 config ALPHA_T2
602 def_bool y !! 412 bool
>> 413 depends on ALPHA_SABLE || ALPHA_LYNX
>> 414 default y
603 415
604 config ARCH_SUPPORTS_CRASH_DUMP !! 416 config ALPHA_PYXIS
605 def_bool y !! 417 bool
>> 418 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 419 default y
606 420
607 config ARCH_SELECTS_CRASH_DUMP !! 421 config ALPHA_EV6
608 def_bool y !! 422 bool
609 depends on CRASH_DUMP !! 423 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
610 select RELOCATABLE !! 424 default y
611 425
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 426 config ALPHA_TSUNAMI
613 def_bool CRASH_RESERVE !! 427 bool
>> 428 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 429 default y
614 430
615 config RELOCATABLE !! 431 config ALPHA_EV67
616 bool "Relocatable kernel" !! 432 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
617 select ARCH_HAS_RELR !! 433 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
618 help 434 help
619 This builds the kernel as a Position !! 435 Is this a machine based on the EV67 core? If in doubt, select N here
620 which retains all relocation metadat !! 436 and the machine will be treated as an EV6.
621 the kernel binary at runtime to a di <<
622 its link address. <<
623 437
624 config RANDOMIZE_BASE !! 438 config ALPHA_MCPCIA
625 bool "Randomize the address of the ker !! 439 bool
626 depends on RELOCATABLE !! 440 depends on ALPHA_RAWHIDE
627 help !! 441 default y
628 Randomizes the physical and virtual <<
629 kernel image is loaded, as a securi <<
630 deters exploit attempts relying on <<
631 of kernel internals. <<
632 442
633 The kernel will be offset by up to !! 443 config ALPHA_POLARIS
>> 444 bool
>> 445 depends on ALPHA_RX164
>> 446 default y
634 447
635 If unsure, say N. !! 448 config ALPHA_IRONGATE
>> 449 bool
>> 450 depends on ALPHA_NAUTILUS
>> 451 default y
636 452
637 config RANDOMIZE_BASE_MAX_OFFSET !! 453 config GENERIC_HWEIGHT
638 hex "Maximum KASLR offset" if EXPERT !! 454 bool
639 depends on RANDOMIZE_BASE !! 455 default y if !ALPHA_EV67
640 range 0x0 0x10000000 <<
641 default "0x01000000" <<
642 help <<
643 When KASLR is active, this provides <<
644 be applied to the kernel image. It s <<
645 amount of physical RAM available in <<
646 456
647 This is limited by the size of the l !! 457 config ALPHA_AVANTI
>> 458 bool
>> 459 depends on ALPHA_XL || ALPHA_AVANTI_CH
>> 460 default y
>> 461 help
>> 462 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
>> 463 Alphas. Info at
>> 464 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
648 465
649 source "kernel/livepatch/Kconfig" !! 466 config ALPHA_BROKEN_IRQ_MASK
>> 467 bool
>> 468 depends on ALPHA_GENERIC || ALPHA_PC164
>> 469 default y
650 470
651 config PARAVIRT !! 471 config VGA_HOSE
652 bool "Enable paravirtualization code" !! 472 bool
653 depends on AS_HAS_LVZ_EXTENSION !! 473 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 474 default y
654 help 475 help
655 This changes the kernel so it can mo !! 476 Support VGA on an arbitrary hose; needed for several platforms
656 under a hypervisor, potentially impr !! 477 which always have multiple hoses, and whose consoles support it.
657 over full virtualization. However, <<
658 the kernel is theoretically slower a <<
659 478
660 config PARAVIRT_TIME_ACCOUNTING <<
661 bool "Paravirtual steal time accountin <<
662 depends on PARAVIRT <<
663 help <<
664 Select this option to enable fine gr <<
665 accounting. Time spent executing oth <<
666 the current vCPU is discounted from <<
667 that, there can be a small performan <<
668 479
669 If in doubt, say N here. !! 480 config ALPHA_QEMU
>> 481 bool "Run under QEMU emulation"
>> 482 depends on !ALPHA_GENERIC
>> 483 ---help---
>> 484 Assume the presence of special features supported by QEMU PALcode
>> 485 that reduce the overhead of system emulation.
670 486
671 endmenu !! 487 Generic kernels will auto-detect QEMU. But when building a
>> 488 system-specific kernel, the assumption is that we want to
>> 489 eliminate as many runtime tests as possible.
672 490
673 config ARCH_SELECT_MEMORY_MODEL !! 491 If unsure, say N.
674 def_bool y <<
675 492
676 config ARCH_FLATMEM_ENABLE <<
677 def_bool y <<
678 depends on !NUMA <<
679 493
680 config ARCH_SPARSEMEM_ENABLE !! 494 config ALPHA_SRM
>> 495 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
>> 496 depends on TTY
>> 497 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
>> 498 ---help---
>> 499 There are two different types of booting firmware on Alphas: SRM,
>> 500 which is command line driven, and ARC, which uses menus and arrow
>> 501 keys. Details about the Linux/Alpha booting process are contained in
>> 502 the Linux/Alpha FAQ, accessible on the WWW from
>> 503 <http://www.alphalinux.org/>.
>> 504
>> 505 The usual way to load Linux on an Alpha machine is to use MILO
>> 506 (a bootloader that lets you pass command line parameters to the
>> 507 kernel just like lilo does for the x86 architecture) which can be
>> 508 loaded either from ARC or can be installed directly as a permanent
>> 509 firmware replacement from floppy (which requires changing a certain
>> 510 jumper on the motherboard). If you want to do either of these, say N
>> 511 here. If MILO doesn't work on your system (true for Jensen
>> 512 motherboards), you can bypass it altogether and boot Linux directly
>> 513 from an SRM console; say Y here in order to do that. Note that you
>> 514 won't be able to boot from an IDE disk using SRM.
>> 515
>> 516 If unsure, say N.
>> 517
>> 518 config ARCH_MAY_HAVE_PC_FDC
681 def_bool y 519 def_bool y
682 select SPARSEMEM_VMEMMAP_ENABLE !! 520
>> 521 config SMP
>> 522 bool "Symmetric multi-processing support"
>> 523 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 524 ---help---
>> 525 This enables support for systems with more than one CPU. If you have
>> 526 a system with only one CPU, say N. If you have a system with more
>> 527 than one CPU, say Y.
>> 528
>> 529 If you say N here, the kernel will run on uni- and multiprocessor
>> 530 machines, but will use only one CPU of a multiprocessor machine. If
>> 531 you say Y here, the kernel will run on many, but not all,
>> 532 uniprocessor machines. On a uniprocessor machine, the kernel
>> 533 will run faster if you say N here.
>> 534
>> 535 See also the SMP-HOWTO available at
>> 536 <http://www.tldp.org/docs.html#howto>.
>> 537
>> 538 If you don't know what to do here, say N.
>> 539
>> 540 config NR_CPUS
>> 541 int "Maximum number of CPUs (2-32)"
>> 542 range 2 32
>> 543 depends on SMP
>> 544 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 545 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
683 help 546 help
684 Say Y to support efficient handling !! 547 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 548 with working support have a maximum of 4 CPUs.
>> 549
>> 550 config ARCH_DISCONTIGMEM_ENABLE
>> 551 bool "Discontiguous Memory Support"
>> 552 help
>> 553 Say Y to support efficient handling of discontiguous physical memory,
685 for architectures which are either N 554 for architectures which are either NUMA (Non-Uniform Memory Access)
686 or have huge holes in the physical a 555 or have huge holes in the physical address space for other reasons.
687 See <file:Documentation/mm/numa.rst> !! 556 See <file:Documentation/vm/numa.rst> for more.
688 557
689 config ARCH_MEMORY_PROBE !! 558 config NUMA
690 def_bool y !! 559 bool "NUMA Support (EXPERIMENTAL)"
691 depends on MEMORY_HOTPLUG !! 560 depends on DISCONTIGMEM && BROKEN
>> 561 help
>> 562 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 563 Access). This option is for configuring high-end multiprocessor
>> 564 server machines. If in doubt, say N.
>> 565
>> 566 config ALPHA_WTINT
>> 567 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 568 default y if ALPHA_QEMU
>> 569 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 570 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 571 default y if SMP
>> 572 ---help---
>> 573 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 574 to sleep until the next interrupt. This may reduce the power
>> 575 consumed, and the heat produced by the computer. However, it has
>> 576 the side effect of making the cycle counter unreliable as a timing
>> 577 device across the sleep.
>> 578
>> 579 For emulation under QEMU, definitely say Y here, as we have other
>> 580 mechanisms for measuring time than the cycle counter.
692 581
693 config MMU !! 582 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
694 bool !! 583 MILO, sleep mode is not supported so you might as well say N here.
695 default y <<
696 584
697 config ARCH_MMAP_RND_BITS_MIN !! 585 For SMP systems we cannot use the cycle counter for timing anyway,
698 default 12 !! 586 so you might as well say Y here.
699 587
700 config ARCH_MMAP_RND_BITS_MAX !! 588 If unsure, say N.
701 default 18 <<
702 589
703 config ARCH_SUPPORTS_UPROBES !! 590 config NODES_SHIFT
704 def_bool y !! 591 int
>> 592 default "7"
>> 593 depends on NEED_MULTIPLE_NODES
705 594
706 config KASAN_SHADOW_OFFSET !! 595 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
707 hex !! 596 config ALPHA_LARGE_VMALLOC
708 default 0x0 !! 597 bool
709 depends on KASAN !! 598 ---help---
>> 599 Process creation and other aspects of virtual memory management can
>> 600 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 601 allocations. This equates to about 8GB.
>> 602
>> 603 Under normal circumstances, this is so far and above what is needed
>> 604 as to be laughable. However, there are certain applications (such
>> 605 as benchmark-grade in-kernel web serving) that can make use of as
>> 606 much vmalloc space as is available.
>> 607
>> 608 Say N unless you know you need gobs and gobs of vmalloc space.
>> 609
>> 610 config VERBOSE_MCHECK
>> 611 bool "Verbose Machine Checks"
>> 612
>> 613 config VERBOSE_MCHECK_ON
>> 614 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 615 depends on VERBOSE_MCHECK
>> 616 default 1
>> 617 ---help---
>> 618 This option allows the default printing mode to be set, and then
>> 619 possibly overridden by a boot command argument.
>> 620
>> 621 For example, if one wanted the option of printing verbose
>> 622 machine checks, but wanted the default to be as if verbose
>> 623 machine check printing was turned off, then one would choose
>> 624 the printing mode to be 0. Then, upon reboot, one could add
>> 625 the boot command line "verbose_mcheck=1" to get the normal
>> 626 verbose machine check printing, or "verbose_mcheck=2" to get
>> 627 the maximum information available.
710 628
711 menu "Power management options" !! 629 Take the default (1) unless you want more control or more info.
712 630
713 config ARCH_SUSPEND_POSSIBLE !! 631 choice
714 def_bool y !! 632 prompt "Timer interrupt frequency (HZ)?"
>> 633 default HZ_128 if ALPHA_QEMU
>> 634 default HZ_1200 if ALPHA_RAWHIDE
>> 635 default HZ_1024
>> 636 ---help---
>> 637 The frequency at which timer interrupts occur. A high frequency
>> 638 minimizes latency, whereas a low frequency minimizes overhead of
>> 639 process accounting. The later effect is especially significant
>> 640 when being run under QEMU.
>> 641
>> 642 Note that some Alpha hardware cannot change the interrupt frequency
>> 643 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 644
>> 645 config HZ_32
>> 646 bool "32 Hz"
>> 647 config HZ_64
>> 648 bool "64 Hz"
>> 649 config HZ_128
>> 650 bool "128 Hz"
>> 651 config HZ_256
>> 652 bool "256 Hz"
>> 653 config HZ_1024
>> 654 bool "1024 Hz"
>> 655 config HZ_1200
>> 656 bool "1200 Hz"
>> 657 endchoice
715 658
716 config ARCH_HIBERNATION_POSSIBLE !! 659 config HZ
717 def_bool y !! 660 int
>> 661 default 32 if HZ_32
>> 662 default 64 if HZ_64
>> 663 default 128 if HZ_128
>> 664 default 256 if HZ_256
>> 665 default 1200 if HZ_1200
>> 666 default 1024
>> 667
>> 668 config SRM_ENV
>> 669 tristate "SRM environment through procfs"
>> 670 depends on PROC_FS
>> 671 ---help---
>> 672 If you enable this option, a subdirectory inside /proc called
>> 673 /proc/srm_environment will give you access to the all important
>> 674 SRM environment variables (those which have a name) and also
>> 675 to all others (by their internal number).
>> 676
>> 677 SRM is something like a BIOS for Alpha machines. There are some
>> 678 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 679 support (hey, that's not SRM!).
>> 680
>> 681 Despite the fact that this driver doesn't work on all Alphas (but
>> 682 only on those which have SRM as their firmware), it's save to
>> 683 build it even if your particular machine doesn't know about SRM
>> 684 (or if you intend to compile a generic kernel). It will simply
>> 685 not create those subdirectory in /proc (and give you some warning,
>> 686 of course).
718 687
719 source "kernel/power/Kconfig" !! 688 This driver is also available as a module and will be called
720 source "drivers/acpi/Kconfig" !! 689 srm_env then.
721 source "drivers/cpufreq/Kconfig" <<
722 690
723 endmenu 691 endmenu
724 692
725 source "arch/loongarch/kvm/Kconfig" !! 693 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 694 # but we also need it if VGA_HOSE is set
>> 695 config DUMMY_CONSOLE
>> 696 bool
>> 697 depends on VGA_HOSE
>> 698 default y
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