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_IDE
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM !! 15 select HAVE_OPROFILE
77 select ARCH_WANTS_NO_INSTR !! 16 select HAVE_PCSPKR_PLATFORM
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC !! 17 select HAVE_PERF_EVENTS
79 select BUILDTIME_TABLE_SORT !! 18 select NEED_DMA_MAP_STATE
80 select COMMON_CLK !! 19 select NEED_SG_DMA_LENGTH
81 select CPU_PM !! 20 select VIRT_TO_BUS
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
>> 22 select GENERIC_PCI_IOMAP if PCI
>> 23 select AUTO_IRQ_AFFINITY if SMP
94 select GENERIC_IRQ_SHOW 24 select GENERIC_IRQ_SHOW
95 select GENERIC_LIB_ASHLDI3 !! 25 select ARCH_WANT_IPC_PARSE_VERSION
96 select GENERIC_LIB_ASHRDI3 !! 26 select ARCH_HAVE_NMI_SAFE_CMPXCHG
97 select GENERIC_LIB_CMPDI2 !! 27 select AUDIT_ARCH
98 select GENERIC_LIB_LSHRDI3 !! 28 select GENERIC_CLOCKEVENTS
99 select GENERIC_LIB_UCMPDI2 !! 29 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 30 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL !! 31 select GENERIC_STRNCPY_FROM_USER
105 select GENERIC_VDSO_TIME_NS !! 32 select GENERIC_STRNLEN_USER
106 select GPIOLIB <<
107 select HAS_IOPORT <<
108 select HAVE_ARCH_AUDITSYSCALL 33 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 34 select HAVE_MOD_ARCH_SPECIFIC
152 select HAVE_NMI !! 35 select MODULES_USE_ELF_RELA
153 select HAVE_OBJTOOL if AS_HAS_EXPLICIT !! 36 select ODD_RT_SIGACTION
154 select HAVE_PCI !! 37 select OLD_SIGSUSPEND
155 select HAVE_PERF_EVENTS !! 38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
156 select HAVE_PERF_REGS !! 39 select MMU_GATHER_NO_RANGE
157 select HAVE_PERF_USER_STACK_DUMP !! 40 help
158 select HAVE_PREEMPT_DYNAMIC_KEY !! 41 The Alpha is a 64-bit general-purpose processor designed and
159 select HAVE_REGS_AND_STACK_ACCESS_API !! 42 marketed by the Digital Equipment Corporation of blessed memory,
160 select HAVE_RELIABLE_STACKTRACE if UNW !! 43 now Hewlett-Packard. The Alpha Linux project has a home page at
161 select HAVE_RETHOOK !! 44 <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 45
203 config 64BIT 46 config 64BIT
204 def_bool y 47 def_bool y
205 48
206 config GENERIC_BUG !! 49 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 50 bool
229 default y 51 default y
230 52
231 config STACKTRACE_SUPPORT !! 53 config ARCH_HAS_ILOG2_U32
232 bool 54 bool
233 default y !! 55 default n
234 <<
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli <<
236 # MIPS Loongson code, to preserve Loongson-spe <<
237 # are shared between architectures, and specif <<
238 config MACH_LOONGSON32 <<
239 def_bool 32BIT <<
240 <<
241 config MACH_LOONGSON64 <<
242 def_bool 64BIT <<
243 56
244 config FIX_EARLYCON_MEM !! 57 config ARCH_HAS_ILOG2_U64
245 def_bool y !! 58 bool
>> 59 default n
246 60
247 config PGTABLE_2LEVEL !! 61 config GENERIC_CALIBRATE_DELAY
248 bool 62 bool
>> 63 default y
249 64
250 config PGTABLE_3LEVEL !! 65 config ZONE_DMA
251 bool 66 bool
>> 67 default y
252 68
253 config PGTABLE_4LEVEL !! 69 config GENERIC_ISA_DMA
254 bool 70 bool
>> 71 default y
255 72
256 config PGTABLE_LEVELS 73 config PGTABLE_LEVELS
257 int 74 int
258 default 2 if PGTABLE_2LEVEL !! 75 default 3
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 76
262 config SCHED_OMIT_FRAME_POINTER !! 77 config AUDIT_ARCH
263 bool 78 bool
264 default y <<
265 <<
266 config AS_HAS_EXPLICIT_RELOCS <<
267 def_bool $(as-instr,x:pcalau12i \$t0$( <<
268 79
269 config AS_HAS_FCSR_CLASS !! 80 menu "System setup"
270 def_bool $(as-instr,movfcsr2gr \$t0$(c <<
271 81
272 config AS_HAS_THIN_ADD_SUB !! 82 choice
273 def_bool $(cc-option,-Wa$(comma)-mthin !! 83 prompt "Alpha system type"
>> 84 default ALPHA_GENERIC
>> 85 ---help---
>> 86 This is the system type of your hardware. A "generic" kernel will
>> 87 run on any supported Alpha system. However, if you configure a
>> 88 kernel for your specific system, it will be faster and smaller.
274 89
275 config AS_HAS_LSX_EXTENSION !! 90 To find out what type of Alpha system you have, you may want to
276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 91 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 92 <http://www.alphalinux.org/>. In summary:
277 93
278 config AS_HAS_LASX_EXTENSION !! 94 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
279 def_bool $(as-instr,xvld \$xr0$(comma) !! 95 Alpha-XL XL-233, XL-266
>> 96 AlphaBook1 Alpha laptop
>> 97 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 98 Cabriolet AlphaPC64, AlphaPCI64
>> 99 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 100 EB164 EB164 21164 evaluation board
>> 101 EB64+ EB64+ 21064 evaluation board
>> 102 EB66 EB66 21066 evaluation board
>> 103 EB66+ EB66+ 21066 evaluation board
>> 104 Jensen DECpc 150, DEC 2000 models 300, 500
>> 105 LX164 AlphaPC164-LX
>> 106 Lynx AS 2100A
>> 107 Miata Personal Workstation 433/500/600 a/au
>> 108 Marvel AlphaServer ES47 / ES80 / GS1280
>> 109 Mikasa AS 1000
>> 110 Noname AXPpci33, UDB (Multia)
>> 111 Noritake AS 1000A, AS 600A, AS 800
>> 112 PC164 AlphaPC164
>> 113 Rawhide AS 1200, AS 4000, AS 4100
>> 114 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 115 SX164 AlphaPC164-SX
>> 116 Sable AS 2000, AS 2100
>> 117 Shark DS 20L
>> 118 Takara Takara (OEM)
>> 119 Titan AlphaServer ES45 / DS25 / DS15
>> 120 Wildfire AlphaServer GS 40/80/160/320
280 121
281 config AS_HAS_LBT_EXTENSION !! 122 If you don't know what to do, choose "generic".
282 def_bool $(as-instr,movscr2gr \$a0$(co <<
283 123
284 config AS_HAS_LVZ_EXTENSION !! 124 config ALPHA_GENERIC
285 def_bool $(as-instr,hvcl 0) !! 125 bool "Generic"
>> 126 depends on TTY
>> 127 select HAVE_EISA
>> 128 help
>> 129 A generic kernel will run on all supported Alpha hardware.
286 130
287 menu "Kernel type and options" !! 131 config ALPHA_ALCOR
>> 132 bool "Alcor/Alpha-XLT"
>> 133 select HAVE_EISA
>> 134 help
>> 135 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 136 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 137 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 138 controller (256-bit memory bus) and a PCI interface. It also does
>> 139 all the work required to support an external Bcache and to maintain
>> 140 memory coherence when a PCI device DMAs into (or out of) memory.
288 141
289 source "kernel/Kconfig.hz" !! 142 config ALPHA_XL
>> 143 bool "Alpha-XL"
>> 144 help
>> 145 XL-233 and XL-266-based Alpha systems.
290 146
291 choice !! 147 config ALPHA_BOOK1
292 prompt "Page Table Layout" !! 148 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 149 help
345 This option selects 64KB page size w !! 150 Dec AlphaBook1/Burns Alpha-based laptops.
346 support a maximum of 55 bits of appl <<
347 151
348 endchoice !! 152 config ALPHA_AVANTI_CH
>> 153 bool "Avanti"
349 154
350 config CMDLINE !! 155 config ALPHA_CABRIOLET
351 string "Built-in kernel command line" !! 156 bool "Cabriolet"
352 help 157 help
353 For most platforms, the arguments fo !! 158 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
354 are provided at run-time, during boo !! 159 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
355 where either no arguments are being !! 160 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
356 arguments are insufficient or even i !! 161 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 <<
360 162
361 choice !! 163 config ALPHA_DP264
362 prompt "Kernel command line type" !! 164 bool "DP264"
363 default CMDLINE_BOOTLOADER <<
364 help 165 help
365 Choose how the kernel will handle th !! 166 Various 21264 systems with the tsunami core logic chipset.
366 line. !! 167 API Networks: 264DP, UP2000(+), CS20;
>> 168 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
367 169
368 config CMDLINE_BOOTLOADER !! 170 config ALPHA_EB164
369 bool "Use bootloader kernel arguments !! 171 bool "EB164"
370 help 172 help
371 Prefer the command-line passed by th !! 173 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
372 Use the built-in command line as fal !! 174 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
373 during boot. This is the default beh !! 175 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
374 !! 176 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
375 config CMDLINE_EXTEND !! 177 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
376 bool "Use built-in to extend bootloade !! 178 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. <<
390 179
391 endchoice !! 180 config ALPHA_EB64P_CH
>> 181 bool "EB64+"
392 182
393 config BUILTIN_DTB !! 183 config ALPHA_EB66
394 bool "Enable built-in dtb in kernel" !! 184 bool "EB66"
395 depends on OF <<
396 help 185 help
397 Some existing systems do not provide !! 186 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
398 the kernel at boot time. Let's provi !! 187 identical to EB64+. Baby PC-AT size. Runs from standard PC power
399 kernel, keyed by the dts filename, c !! 188 supply. The EB66 schematic was published as a marketing poster
>> 189 advertising the 21066 as "the first microprocessor in the world with
>> 190 embedded PCI".
400 191
401 Built-in DTBs are generic enough and !! 192 config ALPHA_EB66P
>> 193 bool "EB66+"
>> 194 help
>> 195 Later variant of the EB66 board.
402 196
403 config BUILTIN_DTB_NAME !! 197 config ALPHA_EIGER
404 string "Source file for built-in dtb" !! 198 bool "Eiger"
405 depends on BUILTIN_DTB <<
406 help 199 help
407 Base name (without suffix, relative !! 200 Apparently an obscure OEM single-board computer based on the
408 for the DTS file that will be used t !! 201 Typhoon/Tsunami chipset family. Information on it is scanty.
409 the kernel. <<
410 202
411 config DMI !! 203 config ALPHA_JENSEN
412 bool "Enable DMI scanning" !! 204 bool "Jensen"
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA !! 205 depends on BROKEN
414 default y !! 206 select HAVE_EISA
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 !! 223 select HAVE_EISA
430 depends on EFI <<
431 select EFI_GENERIC_STUB <<
432 help 224 help
433 This kernel feature allows the kerne !! 225 AlphaServer 2100A-based systems.
434 EFI firmware without the use of a bo <<
435 226
436 config SCHED_SMT !! 227 config ALPHA_MARVEL
437 bool "SMT scheduler support" !! 228 bool "Marvel"
438 depends on SMP <<
439 default y <<
440 help 229 help
441 Improves scheduler's performance whe !! 230 AlphaServer ES47 / ES80 / GS1280 based on EV7.
442 threads in one physical core. <<
443 231
444 config SMP !! 232 config ALPHA_MIATA
445 bool "Multi-Processing support" !! 233 bool "Miata"
>> 234 select HAVE_EISA
446 help 235 help
447 This enables support for systems wit !! 236 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
448 a system with only one CPU, say N. I !! 237 or 600au).
449 than one CPU, say Y. <<
450 238
451 If you say N here, the kernel will r !! 239 config ALPHA_MIKASA
452 machines, but will use only one CPU !! 240 bool "Mikasa"
453 you say Y here, the kernel will run !! 241 help
454 uniprocessor machines. On a uniproce !! 242 AlphaServer 1000-based Alpha systems.
455 will run faster if you say N here. <<
456 243
457 See also the SMP-HOWTO available at !! 244 config ALPHA_NAUTILUS
>> 245 bool "Nautilus"
>> 246 help
>> 247 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
458 248
459 If you don't know what to do here, s !! 249 config ALPHA_NONAME_CH
>> 250 bool "Noname"
460 251
461 config HOTPLUG_CPU !! 252 config ALPHA_NORITAKE
462 bool "Support for hot-pluggable CPUs" !! 253 bool "Noritake"
463 depends on SMP !! 254 select HAVE_EISA
464 select GENERIC_IRQ_MIGRATION <<
465 help 255 help
466 Say Y here to allow turning CPUs off !! 256 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
467 controlled through /sys/devices/syst !! 257 systems.
468 (Note: power management support will <<
469 automatically on SMP systems. ) <<
470 Say N if you want to disable CPU hot <<
471 258
472 config NR_CPUS !! 259 config ALPHA_PC164
473 int "Maximum number of CPUs (2-256)" !! 260 bool "PC164"
474 range 2 256 !! 261
475 depends on SMP !! 262 config ALPHA_P2K
476 default "64" !! 263 bool "Platform2000"
>> 264
>> 265 config ALPHA_RAWHIDE
>> 266 bool "Rawhide"
>> 267 select HAVE_EISA
477 help 268 help
478 This allows you to specify the maxim !! 269 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
479 kernel will support. !! 270 See HOWTO at
>> 271 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
480 272
481 config NUMA !! 273 config ALPHA_RUFFIAN
482 bool "NUMA Support" !! 274 bool "Ruffian"
483 select SMP <<
484 help 275 help
485 Say Y to compile the kernel with NUM !! 276 Samsung APC164UX. There is a page on known problems and workarounds
486 support. This option improves perfo !! 277 at <http://www.alphalinux.org/faq/FAQ-11.html>.
487 than one NUMA node; on single node s <<
488 to leave it disabled. <<
489 278
490 config NODES_SHIFT !! 279 config ALPHA_RX164
491 int !! 280 bool "RX164"
492 default "6" !! 281
493 depends on NUMA !! 282 config ALPHA_SX164
>> 283 bool "SX164"
494 284
495 config ARCH_FORCE_MAX_ORDER !! 285 config ALPHA_SABLE
496 int "Maximum zone order" !! 286 bool "Sable"
497 default "13" if PAGE_SIZE_64KB !! 287 select HAVE_EISA
498 default "11" if PAGE_SIZE_16KB <<
499 default "10" <<
500 help 288 help
501 The kernel memory allocator divides !! 289 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. <<
507 290
508 The page size is not necessarily 4KB !! 291 config ALPHA_SHARK
509 when choosing a value for this optio !! 292 bool "Shark"
510 293
511 config ARCH_IOREMAP !! 294 config ALPHA_TAKARA
512 bool "Enable LoongArch DMW-based iorem !! 295 bool "Takara"
513 help 296 help
514 We use generic TLB-based ioremap() b !! 297 Alpha 11164-based OEM single-board computer.
515 protection support. However, you can <<
516 ioremap() for better performance. <<
517 298
518 config ARCH_WRITECOMBINE !! 299 config ALPHA_TITAN
519 bool "Enable WriteCombine (WUC) for io !! 300 bool "Titan"
520 help 301 help
521 LoongArch maintains cache coherency !! 302 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). <<
526 303
527 This means WUC can only used for wri !! 304 config ALPHA_WILDFIRE
528 this option is disabled by default, !! 305 bool "Wildfire"
529 SUC for ioremap(). You can enable th !! 306 help
530 to run on hardware without this bug. !! 307 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
531 308
532 You can override this setting via wr !! 309 endchoice
533 310
534 config ARCH_STRICT_ALIGN !! 311 # clear all implied options (don't want default values for those):
535 bool "Enable -mstrict-align to prevent !! 312 # Most of these machines have ISA slots; not exactly sure which don't,
>> 313 # and this doesn't activate hordes of code, so do it always.
>> 314 config ISA
>> 315 bool
536 default y 316 default y
537 help 317 help
538 Not all LoongArch cores support h/w !! 318 Find out whether you have ISA slots on your motherboard. ISA is the
539 -mstrict-align build parameter to pr !! 319 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 320 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 321 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 322 newer boards don't support it. If you have ISA, say Y, otherwise N.
540 323
541 CPUs with h/w unaligned access suppo !! 324 config ISA_DMA_API
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 325 bool
>> 326 default y
>> 327
>> 328 config ALPHA_NONAME
>> 329 bool
>> 330 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 331 default y
>> 332 help
>> 333 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
>> 334 UDB). This design was produced by Digital's Technical OEM (TOEM)
>> 335 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 336 is a baby-AT size, and runs from a standard PC power supply. It has
>> 337 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 338 2 versions, with either PS/2 or large DIN connectors for the
>> 339 keyboard.
543 340
544 CPUs without h/w unaligned access su !! 341 config ALPHA_EV4
545 Loongson-2K500/2K1000. !! 342 bool
>> 343 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
>> 344 default y if !ALPHA_LYNX
546 345
547 This option is enabled by default to !! 346 config ALPHA_LCA
548 on all LoongArch systems. But you ca !! 347 bool
549 to run kernel only on systems with h !! 348 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
550 order to optimise for performance. !! 349 default y
551 350
552 config CPU_HAS_FPU !! 351 config ALPHA_APECS
553 bool 352 bool
>> 353 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
554 default y 354 default y
555 355
556 config CPU_HAS_LSX !! 356 config ALPHA_EB64P
557 bool "Support for the Loongson SIMD Ex !! 357 bool
558 depends on AS_HAS_LSX_EXTENSION !! 358 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 359 default y
559 help 360 help
560 Loongson SIMD Extension (LSX) introd !! 361 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
561 and a set of SIMD instructions to op !! 362 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
562 is enabled the kernel will support a !! 363 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
563 vector register contexts. If you kno !! 364 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
564 running on CPUs which do not support !! 365 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
565 not be making use of it then you may !! 366 Runs from standard PC power supply.
566 the size & complexity of your kernel <<
567 367
568 If unsure, say Y. !! 368 config ALPHA_EV5
>> 369 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 370 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
569 371
570 config CPU_HAS_LASX !! 372 config ALPHA_EV4
571 bool "Support for the Loongson Advance !! 373 bool
572 depends on CPU_HAS_LSX !! 374 default y if ALPHA_LYNX && !ALPHA_EV5
573 depends on AS_HAS_LASX_EXTENSION !! 375
574 help !! 376 config ALPHA_CIA
575 Loongson Advanced SIMD Extension (LA !! 377 bool
576 registers and a set of SIMD instruct !! 378 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 !! 379 default y
578 vector register contexts. If you kno !! 380
579 running on CPUs which do not support !! 381 config ALPHA_EV56
580 not be making use of it then you may !! 382 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
581 the size & complexity of your kernel !! 383 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
582 384
583 If unsure, say Y. !! 385 config ALPHA_EV56
>> 386 prompt "EV56 CPU (speed >= 333MHz)?"
>> 387 depends on ALPHA_NORITAKE || ALPHA_PRIMO
584 388
585 config CPU_HAS_LBT !! 389 config ALPHA_EV56
586 bool "Support for the Loongson Binary !! 390 prompt "EV56 CPU (speed >= 400MHz)?"
587 depends on AS_HAS_LBT_EXTENSION !! 391 depends on ALPHA_RAWHIDE
>> 392
>> 393 config ALPHA_PRIMO
>> 394 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 395 depends on ALPHA_NORITAKE || ALPHA_MIKASA
588 help 396 help
589 Loongson Binary Translation (LBT) in !! 397 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. <<
593 398
594 If you want to use this feature, suc !! 399 config ALPHA_GAMMA
595 Translator (LAT), say Y. !! 400 bool "EV5 CPU(s) (model 5/xxx)?"
>> 401 depends on ALPHA_SABLE
>> 402 help
>> 403 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
596 404
597 config CPU_HAS_PREFETCH !! 405 config ALPHA_GAMMA
598 bool 406 bool
>> 407 depends on ALPHA_LYNX
599 default y 408 default y
600 409
601 config ARCH_SUPPORTS_KEXEC !! 410 config ALPHA_T2
602 def_bool y !! 411 bool
>> 412 depends on ALPHA_SABLE || ALPHA_LYNX
>> 413 default y
603 414
604 config ARCH_SUPPORTS_CRASH_DUMP !! 415 config ALPHA_PYXIS
605 def_bool y !! 416 bool
>> 417 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 418 default y
606 419
607 config ARCH_SELECTS_CRASH_DUMP !! 420 config ALPHA_EV6
608 def_bool y !! 421 bool
609 depends on CRASH_DUMP !! 422 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
610 select RELOCATABLE !! 423 default y
611 424
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 425 config ALPHA_TSUNAMI
613 def_bool CRASH_RESERVE !! 426 bool
>> 427 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 428 default y
614 429
615 config RELOCATABLE !! 430 config ALPHA_EV67
616 bool "Relocatable kernel" !! 431 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
617 select ARCH_HAS_RELR !! 432 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
618 help 433 help
619 This builds the kernel as a Position !! 434 Is this a machine based on the EV67 core? If in doubt, select N here
620 which retains all relocation metadat !! 435 and the machine will be treated as an EV6.
621 the kernel binary at runtime to a di <<
622 its link address. <<
623 436
624 config RANDOMIZE_BASE !! 437 config ALPHA_MCPCIA
625 bool "Randomize the address of the ker !! 438 bool
626 depends on RELOCATABLE !! 439 depends on ALPHA_RAWHIDE
627 help !! 440 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. <<
632 441
633 The kernel will be offset by up to !! 442 config ALPHA_POLARIS
>> 443 bool
>> 444 depends on ALPHA_RX164
>> 445 default y
634 446
635 If unsure, say N. !! 447 config ALPHA_IRONGATE
>> 448 bool
>> 449 depends on ALPHA_NAUTILUS
>> 450 default y
636 451
637 config RANDOMIZE_BASE_MAX_OFFSET !! 452 config GENERIC_HWEIGHT
638 hex "Maximum KASLR offset" if EXPERT !! 453 bool
639 depends on RANDOMIZE_BASE !! 454 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 <<
646 455
647 This is limited by the size of the l !! 456 config ALPHA_AVANTI
>> 457 bool
>> 458 depends on ALPHA_XL || ALPHA_AVANTI_CH
>> 459 default y
>> 460 help
>> 461 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
>> 462 Alphas. Info at
>> 463 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
648 464
649 source "kernel/livepatch/Kconfig" !! 465 config ALPHA_BROKEN_IRQ_MASK
>> 466 bool
>> 467 depends on ALPHA_GENERIC || ALPHA_PC164
>> 468 default y
650 469
651 config PARAVIRT !! 470 config VGA_HOSE
652 bool "Enable paravirtualization code" !! 471 bool
653 depends on AS_HAS_LVZ_EXTENSION !! 472 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 473 default y
654 help 474 help
655 This changes the kernel so it can mo !! 475 Support VGA on an arbitrary hose; needed for several platforms
656 under a hypervisor, potentially impr !! 476 which always have multiple hoses, and whose consoles support it.
657 over full virtualization. However, <<
658 the kernel is theoretically slower a <<
659 477
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 <<
668 478
669 If in doubt, say N here. !! 479 config ALPHA_QEMU
>> 480 bool "Run under QEMU emulation"
>> 481 depends on !ALPHA_GENERIC
>> 482 ---help---
>> 483 Assume the presence of special features supported by QEMU PALcode
>> 484 that reduce the overhead of system emulation.
670 485
671 endmenu !! 486 Generic kernels will auto-detect QEMU. But when building a
>> 487 system-specific kernel, the assumption is that we want to
>> 488 eliminate as many runtime tests as possible.
672 489
673 config ARCH_SELECT_MEMORY_MODEL !! 490 If unsure, say N.
674 def_bool y <<
675 491
676 config ARCH_FLATMEM_ENABLE <<
677 def_bool y <<
678 depends on !NUMA <<
679 492
680 config ARCH_SPARSEMEM_ENABLE !! 493 config ALPHA_SRM
>> 494 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
>> 495 depends on TTY
>> 496 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
>> 497 ---help---
>> 498 There are two different types of booting firmware on Alphas: SRM,
>> 499 which is command line driven, and ARC, which uses menus and arrow
>> 500 keys. Details about the Linux/Alpha booting process are contained in
>> 501 the Linux/Alpha FAQ, accessible on the WWW from
>> 502 <http://www.alphalinux.org/>.
>> 503
>> 504 The usual way to load Linux on an Alpha machine is to use MILO
>> 505 (a bootloader that lets you pass command line parameters to the
>> 506 kernel just like lilo does for the x86 architecture) which can be
>> 507 loaded either from ARC or can be installed directly as a permanent
>> 508 firmware replacement from floppy (which requires changing a certain
>> 509 jumper on the motherboard). If you want to do either of these, say N
>> 510 here. If MILO doesn't work on your system (true for Jensen
>> 511 motherboards), you can bypass it altogether and boot Linux directly
>> 512 from an SRM console; say Y here in order to do that. Note that you
>> 513 won't be able to boot from an IDE disk using SRM.
>> 514
>> 515 If unsure, say N.
>> 516
>> 517 config ARCH_MAY_HAVE_PC_FDC
681 def_bool y 518 def_bool y
682 select SPARSEMEM_VMEMMAP_ENABLE !! 519
>> 520 config SMP
>> 521 bool "Symmetric multi-processing support"
>> 522 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 523 ---help---
>> 524 This enables support for systems with more than one CPU. If you have
>> 525 a system with only one CPU, say N. If you have a system with more
>> 526 than one CPU, say Y.
>> 527
>> 528 If you say N here, the kernel will run on uni- and multiprocessor
>> 529 machines, but will use only one CPU of a multiprocessor machine. If
>> 530 you say Y here, the kernel will run on many, but not all,
>> 531 uniprocessor machines. On a uniprocessor machine, the kernel
>> 532 will run faster if you say N here.
>> 533
>> 534 See also the SMP-HOWTO available at
>> 535 <http://www.tldp.org/docs.html#howto>.
>> 536
>> 537 If you don't know what to do here, say N.
>> 538
>> 539 config NR_CPUS
>> 540 int "Maximum number of CPUs (2-32)"
>> 541 range 2 32
>> 542 depends on SMP
>> 543 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 544 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
683 help 545 help
684 Say Y to support efficient handling !! 546 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 547 with working support have a maximum of 4 CPUs.
>> 548
>> 549 config ARCH_DISCONTIGMEM_ENABLE
>> 550 bool "Discontiguous Memory Support"
>> 551 help
>> 552 Say Y to support efficient handling of discontiguous physical memory,
685 for architectures which are either N 553 for architectures which are either NUMA (Non-Uniform Memory Access)
686 or have huge holes in the physical a 554 or have huge holes in the physical address space for other reasons.
687 See <file:Documentation/mm/numa.rst> !! 555 See <file:Documentation/vm/numa.rst> for more.
688 556
689 config ARCH_MEMORY_PROBE !! 557 config NUMA
690 def_bool y !! 558 bool "NUMA Support (EXPERIMENTAL)"
691 depends on MEMORY_HOTPLUG !! 559 depends on DISCONTIGMEM && BROKEN
>> 560 help
>> 561 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 562 Access). This option is for configuring high-end multiprocessor
>> 563 server machines. If in doubt, say N.
>> 564
>> 565 config ALPHA_WTINT
>> 566 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 567 default y if ALPHA_QEMU
>> 568 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 569 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 570 default y if SMP
>> 571 ---help---
>> 572 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 573 to sleep until the next interrupt. This may reduce the power
>> 574 consumed, and the heat produced by the computer. However, it has
>> 575 the side effect of making the cycle counter unreliable as a timing
>> 576 device across the sleep.
>> 577
>> 578 For emulation under QEMU, definitely say Y here, as we have other
>> 579 mechanisms for measuring time than the cycle counter.
692 580
693 config MMU !! 581 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
694 bool !! 582 MILO, sleep mode is not supported so you might as well say N here.
695 default y <<
696 583
697 config ARCH_MMAP_RND_BITS_MIN !! 584 For SMP systems we cannot use the cycle counter for timing anyway,
698 default 12 !! 585 so you might as well say Y here.
699 586
700 config ARCH_MMAP_RND_BITS_MAX !! 587 If unsure, say N.
701 default 18 <<
702 588
703 config ARCH_SUPPORTS_UPROBES !! 589 config NODES_SHIFT
704 def_bool y !! 590 int
>> 591 default "7"
>> 592 depends on NEED_MULTIPLE_NODES
705 593
706 config KASAN_SHADOW_OFFSET !! 594 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
707 hex !! 595 config ALPHA_LARGE_VMALLOC
708 default 0x0 !! 596 bool
709 depends on KASAN !! 597 ---help---
>> 598 Process creation and other aspects of virtual memory management can
>> 599 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 600 allocations. This equates to about 8GB.
>> 601
>> 602 Under normal circumstances, this is so far and above what is needed
>> 603 as to be laughable. However, there are certain applications (such
>> 604 as benchmark-grade in-kernel web serving) that can make use of as
>> 605 much vmalloc space as is available.
>> 606
>> 607 Say N unless you know you need gobs and gobs of vmalloc space.
>> 608
>> 609 config VERBOSE_MCHECK
>> 610 bool "Verbose Machine Checks"
>> 611
>> 612 config VERBOSE_MCHECK_ON
>> 613 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 614 depends on VERBOSE_MCHECK
>> 615 default 1
>> 616 ---help---
>> 617 This option allows the default printing mode to be set, and then
>> 618 possibly overridden by a boot command argument.
>> 619
>> 620 For example, if one wanted the option of printing verbose
>> 621 machine checks, but wanted the default to be as if verbose
>> 622 machine check printing was turned off, then one would choose
>> 623 the printing mode to be 0. Then, upon reboot, one could add
>> 624 the boot command line "verbose_mcheck=1" to get the normal
>> 625 verbose machine check printing, or "verbose_mcheck=2" to get
>> 626 the maximum information available.
710 627
711 menu "Power management options" !! 628 Take the default (1) unless you want more control or more info.
712 629
713 config ARCH_SUSPEND_POSSIBLE !! 630 choice
714 def_bool y !! 631 prompt "Timer interrupt frequency (HZ)?"
>> 632 default HZ_128 if ALPHA_QEMU
>> 633 default HZ_1200 if ALPHA_RAWHIDE
>> 634 default HZ_1024
>> 635 ---help---
>> 636 The frequency at which timer interrupts occur. A high frequency
>> 637 minimizes latency, whereas a low frequency minimizes overhead of
>> 638 process accounting. The later effect is especially significant
>> 639 when being run under QEMU.
>> 640
>> 641 Note that some Alpha hardware cannot change the interrupt frequency
>> 642 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 643
>> 644 config HZ_32
>> 645 bool "32 Hz"
>> 646 config HZ_64
>> 647 bool "64 Hz"
>> 648 config HZ_128
>> 649 bool "128 Hz"
>> 650 config HZ_256
>> 651 bool "256 Hz"
>> 652 config HZ_1024
>> 653 bool "1024 Hz"
>> 654 config HZ_1200
>> 655 bool "1200 Hz"
>> 656 endchoice
715 657
716 config ARCH_HIBERNATION_POSSIBLE !! 658 config HZ
717 def_bool y !! 659 int
>> 660 default 32 if HZ_32
>> 661 default 64 if HZ_64
>> 662 default 128 if HZ_128
>> 663 default 256 if HZ_256
>> 664 default 1200 if HZ_1200
>> 665 default 1024
>> 666
>> 667 config SRM_ENV
>> 668 tristate "SRM environment through procfs"
>> 669 depends on PROC_FS
>> 670 ---help---
>> 671 If you enable this option, a subdirectory inside /proc called
>> 672 /proc/srm_environment will give you access to the all important
>> 673 SRM environment variables (those which have a name) and also
>> 674 to all others (by their internal number).
>> 675
>> 676 SRM is something like a BIOS for Alpha machines. There are some
>> 677 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 678 support (hey, that's not SRM!).
>> 679
>> 680 Despite the fact that this driver doesn't work on all Alphas (but
>> 681 only on those which have SRM as their firmware), it's save to
>> 682 build it even if your particular machine doesn't know about SRM
>> 683 (or if you intend to compile a generic kernel). It will simply
>> 684 not create those subdirectory in /proc (and give you some warning,
>> 685 of course).
718 686
719 source "kernel/power/Kconfig" !! 687 This driver is also available as a module and will be called
720 source "drivers/acpi/Kconfig" !! 688 srm_env then.
721 source "drivers/cpufreq/Kconfig" <<
722 689
723 endmenu 690 endmenu
724 691
725 source "arch/loongarch/kvm/Kconfig" !! 692 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 693 # but we also need it if VGA_HOSE is set
>> 694 config DUMMY_CONSOLE
>> 695 bool
>> 696 depends on VGA_HOSE
>> 697 default y
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