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 <<
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 6 select ARCH_MIGHT_HAVE_PC_PARPORT
59 select ARCH_MIGHT_HAVE_PC_SERIO 7 select ARCH_MIGHT_HAVE_PC_SERIO
60 select ARCH_SPARSEMEM_ENABLE !! 8 select ARCH_NO_PREEMPT
61 select ARCH_STACKWALK !! 9 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 10 select ARCH_USE_CMPXCHG_LOCKREF
71 select ARCH_USE_QUEUED_RWLOCKS !! 11 select DMA_OPS if PCI
72 select ARCH_USE_QUEUED_SPINLOCKS !! 12 select FORCE_PCI if !ALPHA_JENSEN
73 select ARCH_WANT_DEFAULT_BPF_JIT !! 13 select PCI_DOMAINS if PCI
74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ !! 14 select PCI_SYSCALL if PCI
75 select ARCH_WANT_LD_ORPHAN_WARN !! 15 select HAVE_AOUT
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM !! 16 select HAVE_ASM_MODVERSIONS
77 select ARCH_WANTS_NO_INSTR !! 17 select HAVE_PCSPKR_PLATFORM
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC !! 18 select HAVE_PERF_EVENTS
79 select BUILDTIME_TABLE_SORT !! 19 select NEED_DMA_MAP_STATE
80 select COMMON_CLK !! 20 select NEED_SG_DMA_LENGTH
81 select CPU_PM !! 21 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 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_CPU_VULNERABILITIES
99 select GENERIC_LIB_UCMPDI2 <<
100 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
101 select GENERIC_PCI_IOMAP <<
102 select GENERIC_SCHED_CLOCK <<
103 select GENERIC_SMP_IDLE_THREAD 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 select SET_FS
158 select HAVE_PREEMPT_DYNAMIC_KEY !! 41 select SPARSEMEM_EXTREME if SPARSEMEM
159 select HAVE_REGS_AND_STACK_ACCESS_API !! 42 select ZONE_DMA
160 select HAVE_RELIABLE_STACKTRACE if UNW !! 43 help
161 select HAVE_RETHOOK !! 44 The Alpha is a 64-bit general-purpose processor designed and
162 select HAVE_RSEQ !! 45 marketed by the Digital Equipment Corporation of blessed memory,
163 select HAVE_RUST !! 46 now Hewlett-Packard. The Alpha Linux project has a home page at
164 select HAVE_SAMPLE_FTRACE_DIRECT !! 47 <http://www.alphalinux.org/>.
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 48
203 config 64BIT 49 config 64BIT
204 def_bool y 50 def_bool y
205 51
206 config GENERIC_BUG !! 52 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 53 bool
229 default y 54 default y
230 55
231 config STACKTRACE_SUPPORT !! 56 config ARCH_HAS_ILOG2_U32
232 bool 57 bool
233 default y !! 58 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 59
244 config FIX_EARLYCON_MEM !! 60 config ARCH_HAS_ILOG2_U64
245 def_bool y <<
246 <<
247 config PGTABLE_2LEVEL <<
248 bool 61 bool
>> 62 default n
249 63
250 config PGTABLE_3LEVEL !! 64 config GENERIC_CALIBRATE_DELAY
251 bool 65 bool
>> 66 default y
252 67
253 config PGTABLE_4LEVEL !! 68 config GENERIC_ISA_DMA
254 bool 69 bool
>> 70 default y
255 71
256 config PGTABLE_LEVELS 72 config PGTABLE_LEVELS
257 int 73 int
258 default 2 if PGTABLE_2LEVEL !! 74 default 3
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 75
262 config SCHED_OMIT_FRAME_POINTER !! 76 config AUDIT_ARCH
263 bool 77 bool
264 default y <<
265 <<
266 config AS_HAS_EXPLICIT_RELOCS <<
267 def_bool $(as-instr,x:pcalau12i \$t0$( <<
268 78
269 config AS_HAS_FCSR_CLASS !! 79 menu "System setup"
270 def_bool $(as-instr,movfcsr2gr \$t0$(c <<
271 80
272 config AS_HAS_THIN_ADD_SUB !! 81 choice
273 def_bool $(cc-option,-Wa$(comma)-mthin !! 82 prompt "Alpha system type"
>> 83 default ALPHA_GENERIC
>> 84 help
>> 85 This is the system type of your hardware. A "generic" kernel will
>> 86 run on any supported Alpha system. However, if you configure a
>> 87 kernel for your specific system, it will be faster and smaller.
274 88
275 config AS_HAS_LSX_EXTENSION !! 89 To find out what type of Alpha system you have, you may want to
276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 90 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 91 <http://www.alphalinux.org/>. In summary:
277 92
278 config AS_HAS_LASX_EXTENSION !! 93 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
279 def_bool $(as-instr,xvld \$xr0$(comma) !! 94 Alpha-XL XL-233, XL-266
>> 95 AlphaBook1 Alpha laptop
>> 96 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 97 Cabriolet AlphaPC64, AlphaPCI64
>> 98 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 99 EB164 EB164 21164 evaluation board
>> 100 EB64+ EB64+ 21064 evaluation board
>> 101 EB66 EB66 21066 evaluation board
>> 102 EB66+ EB66+ 21066 evaluation board
>> 103 Jensen DECpc 150, DEC 2000 models 300, 500
>> 104 LX164 AlphaPC164-LX
>> 105 Lynx AS 2100A
>> 106 Miata Personal Workstation 433/500/600 a/au
>> 107 Marvel AlphaServer ES47 / ES80 / GS1280
>> 108 Mikasa AS 1000
>> 109 Noname AXPpci33, UDB (Multia)
>> 110 Noritake AS 1000A, AS 600A, AS 800
>> 111 PC164 AlphaPC164
>> 112 Rawhide AS 1200, AS 4000, AS 4100
>> 113 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 114 SX164 AlphaPC164-SX
>> 115 Sable AS 2000, AS 2100
>> 116 Shark DS 20L
>> 117 Takara Takara (OEM)
>> 118 Titan AlphaServer ES45 / DS25 / DS15
>> 119 Wildfire AlphaServer GS 40/80/160/320
280 120
281 config AS_HAS_LBT_EXTENSION !! 121 If you don't know what to do, choose "generic".
282 def_bool $(as-instr,movscr2gr \$a0$(co <<
283 122
284 config AS_HAS_LVZ_EXTENSION !! 123 config ALPHA_GENERIC
285 def_bool $(as-instr,hvcl 0) !! 124 bool "Generic"
>> 125 depends on TTY
>> 126 select HAVE_EISA
>> 127 help
>> 128 A generic kernel will run on all supported Alpha hardware.
286 129
287 menu "Kernel type and options" !! 130 config ALPHA_ALCOR
>> 131 bool "Alcor/Alpha-XLT"
>> 132 select HAVE_EISA
>> 133 help
>> 134 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 135 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 136 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 137 controller (256-bit memory bus) and a PCI interface. It also does
>> 138 all the work required to support an external Bcache and to maintain
>> 139 memory coherence when a PCI device DMAs into (or out of) memory.
288 140
289 source "kernel/Kconfig.hz" !! 141 config ALPHA_XL
>> 142 bool "Alpha-XL"
>> 143 help
>> 144 XL-233 and XL-266-based Alpha systems.
290 145
291 choice !! 146 config ALPHA_BOOK1
292 prompt "Page Table Layout" !! 147 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 148 help
345 This option selects 64KB page size w !! 149 Dec AlphaBook1/Burns Alpha-based laptops.
346 support a maximum of 55 bits of appl <<
347 150
348 endchoice !! 151 config ALPHA_AVANTI_CH
>> 152 bool "Avanti"
349 153
350 config CMDLINE !! 154 config ALPHA_CABRIOLET
351 string "Built-in kernel command line" !! 155 bool "Cabriolet"
352 help 156 help
353 For most platforms, the arguments fo !! 157 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
354 are provided at run-time, during boo !! 158 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
355 where either no arguments are being !! 159 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
356 arguments are insufficient or even i !! 160 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 <<
360 161
361 choice !! 162 config ALPHA_DP264
362 prompt "Kernel command line type" !! 163 bool "DP264"
363 default CMDLINE_BOOTLOADER <<
364 help 164 help
365 Choose how the kernel will handle th !! 165 Various 21264 systems with the tsunami core logic chipset.
366 line. !! 166 API Networks: 264DP, UP2000(+), CS20;
>> 167 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
367 168
368 config CMDLINE_BOOTLOADER !! 169 config ALPHA_EB164
369 bool "Use bootloader kernel arguments !! 170 bool "EB164"
370 help 171 help
371 Prefer the command-line passed by th !! 172 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
372 Use the built-in command line as fal !! 173 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
373 during boot. This is the default beh !! 174 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
374 !! 175 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
375 config CMDLINE_EXTEND !! 176 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
376 bool "Use built-in to extend bootloade !! 177 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. <<
390 178
391 endchoice !! 179 config ALPHA_EB64P_CH
>> 180 bool "EB64+"
392 181
393 config BUILTIN_DTB !! 182 config ALPHA_EB66
394 bool "Enable built-in dtb in kernel" !! 183 bool "EB66"
395 depends on OF <<
396 help 184 help
397 Some existing systems do not provide !! 185 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
398 the kernel at boot time. Let's provi !! 186 identical to EB64+. Baby PC-AT size. Runs from standard PC power
399 kernel, keyed by the dts filename, c !! 187 supply. The EB66 schematic was published as a marketing poster
>> 188 advertising the 21066 as "the first microprocessor in the world with
>> 189 embedded PCI".
400 190
401 Built-in DTBs are generic enough and !! 191 config ALPHA_EB66P
>> 192 bool "EB66+"
>> 193 help
>> 194 Later variant of the EB66 board.
402 195
403 config BUILTIN_DTB_NAME !! 196 config ALPHA_EIGER
404 string "Source file for built-in dtb" !! 197 bool "Eiger"
405 depends on BUILTIN_DTB <<
406 help 198 help
407 Base name (without suffix, relative !! 199 Apparently an obscure OEM single-board computer based on the
408 for the DTS file that will be used t !! 200 Typhoon/Tsunami chipset family. Information on it is scanty.
409 the kernel. <<
410 201
411 config DMI !! 202 config ALPHA_JENSEN
412 bool "Enable DMI scanning" !! 203 bool "Jensen"
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA !! 204 depends on BROKEN
414 default y !! 205 select HAVE_EISA
415 help 206 help
416 This enables SMBIOS/DMI feature for !! 207 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
417 DMI to identify machine quirks. !! 208 of the first-generation Alpha systems. A number of these systems
>> 209 seem to be available on the second- hand market. The Jensen is a
>> 210 floor-standing tower system which originally used a 150MHz 21064 It
>> 211 used programmable logic to interface a 486 EISA I/O bridge to the
>> 212 CPU.
418 213
419 config EFI !! 214 config ALPHA_LX164
420 bool "EFI runtime service support" !! 215 bool "LX164"
421 select UCS2_STRING <<
422 select EFI_RUNTIME_WRAPPERS <<
423 help 216 help
424 This enables the kernel to use EFI r !! 217 A technical overview of this board is available at
425 available (such as the EFI variable !! 218 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
426 219
427 config EFI_STUB !! 220 config ALPHA_LYNX
428 bool "EFI boot stub support" !! 221 bool "Lynx"
429 default y !! 222 select HAVE_EISA
430 depends on EFI <<
431 select EFI_GENERIC_STUB <<
432 help 223 help
433 This kernel feature allows the kerne !! 224 AlphaServer 2100A-based systems.
434 EFI firmware without the use of a bo <<
435 225
436 config SCHED_SMT !! 226 config ALPHA_MARVEL
437 bool "SMT scheduler support" !! 227 bool "Marvel"
438 depends on SMP <<
439 default y <<
440 help 228 help
441 Improves scheduler's performance whe !! 229 AlphaServer ES47 / ES80 / GS1280 based on EV7.
442 threads in one physical core. <<
443 230
444 config SMP !! 231 config ALPHA_MIATA
445 bool "Multi-Processing support" !! 232 bool "Miata"
>> 233 select HAVE_EISA
446 help 234 help
447 This enables support for systems wit !! 235 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
448 a system with only one CPU, say N. I !! 236 or 600au).
449 than one CPU, say Y. <<
450 237
451 If you say N here, the kernel will r !! 238 config ALPHA_MIKASA
452 machines, but will use only one CPU !! 239 bool "Mikasa"
453 you say Y here, the kernel will run !! 240 help
454 uniprocessor machines. On a uniproce !! 241 AlphaServer 1000-based Alpha systems.
455 will run faster if you say N here. <<
456 242
457 See also the SMP-HOWTO available at !! 243 config ALPHA_NAUTILUS
>> 244 bool "Nautilus"
>> 245 help
>> 246 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
458 247
459 If you don't know what to do here, s !! 248 config ALPHA_NONAME_CH
>> 249 bool "Noname"
460 250
461 config HOTPLUG_CPU !! 251 config ALPHA_NORITAKE
462 bool "Support for hot-pluggable CPUs" !! 252 bool "Noritake"
463 depends on SMP !! 253 select HAVE_EISA
464 select GENERIC_IRQ_MIGRATION <<
465 help 254 help
466 Say Y here to allow turning CPUs off !! 255 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
467 controlled through /sys/devices/syst !! 256 systems.
468 (Note: power management support will <<
469 automatically on SMP systems. ) <<
470 Say N if you want to disable CPU hot <<
471 257
472 config NR_CPUS !! 258 config ALPHA_PC164
473 int "Maximum number of CPUs (2-256)" !! 259 bool "PC164"
474 range 2 256 !! 260
475 depends on SMP !! 261 config ALPHA_P2K
476 default "64" !! 262 bool "Platform2000"
>> 263
>> 264 config ALPHA_RAWHIDE
>> 265 bool "Rawhide"
>> 266 select HAVE_EISA
477 help 267 help
478 This allows you to specify the maxim !! 268 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
479 kernel will support. !! 269 See HOWTO at
>> 270 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
480 271
481 config NUMA !! 272 config ALPHA_RUFFIAN
482 bool "NUMA Support" !! 273 bool "Ruffian"
483 select SMP <<
484 help 274 help
485 Say Y to compile the kernel with NUM !! 275 Samsung APC164UX. There is a page on known problems and workarounds
486 support. This option improves perfo !! 276 at <http://www.alphalinux.org/faq/FAQ-11.html>.
487 than one NUMA node; on single node s <<
488 to leave it disabled. <<
489 277
490 config NODES_SHIFT !! 278 config ALPHA_RX164
491 int !! 279 bool "RX164"
492 default "6" <<
493 depends on NUMA <<
494 280
495 config ARCH_FORCE_MAX_ORDER !! 281 config ALPHA_SX164
496 int "Maximum zone order" !! 282 bool "SX164"
497 default "13" if PAGE_SIZE_64KB !! 283
498 default "11" if PAGE_SIZE_16KB !! 284 config ALPHA_SABLE
499 default "10" !! 285 bool "Sable"
>> 286 select HAVE_EISA
500 help 287 help
501 The kernel memory allocator divides !! 288 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. <<
507 289
508 The page size is not necessarily 4KB !! 290 config ALPHA_SHARK
509 when choosing a value for this optio !! 291 bool "Shark"
510 292
511 config ARCH_IOREMAP !! 293 config ALPHA_TAKARA
512 bool "Enable LoongArch DMW-based iorem !! 294 bool "Takara"
513 help 295 help
514 We use generic TLB-based ioremap() b !! 296 Alpha 11164-based OEM single-board computer.
515 protection support. However, you can <<
516 ioremap() for better performance. <<
517 297
518 config ARCH_WRITECOMBINE !! 298 config ALPHA_TITAN
519 bool "Enable WriteCombine (WUC) for io !! 299 bool "Titan"
520 help 300 help
521 LoongArch maintains cache coherency !! 301 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). <<
526 302
527 This means WUC can only used for wri !! 303 config ALPHA_WILDFIRE
528 this option is disabled by default, !! 304 bool "Wildfire"
529 SUC for ioremap(). You can enable th !! 305 help
530 to run on hardware without this bug. !! 306 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
531 307
532 You can override this setting via wr !! 308 endchoice
533 309
534 config ARCH_STRICT_ALIGN !! 310 # clear all implied options (don't want default values for those):
535 bool "Enable -mstrict-align to prevent !! 311 # Most of these machines have ISA slots; not exactly sure which don't,
>> 312 # and this doesn't activate hordes of code, so do it always.
>> 313 config ISA
>> 314 bool
536 default y 315 default y
537 help 316 help
538 Not all LoongArch cores support h/w !! 317 Find out whether you have ISA slots on your motherboard. ISA is the
539 -mstrict-align build parameter to pr !! 318 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 319 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 320 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 321 newer boards don't support it. If you have ISA, say Y, otherwise N.
>> 322
>> 323 config ISA_DMA_API
>> 324 bool
>> 325 default y
540 326
541 CPUs with h/w unaligned access suppo !! 327 config ALPHA_NONAME
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 328 bool
>> 329 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 330 default y
>> 331 help
>> 332 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
>> 333 UDB). This design was produced by Digital's Technical OEM (TOEM)
>> 334 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 335 is a baby-AT size, and runs from a standard PC power supply. It has
>> 336 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 337 2 versions, with either PS/2 or large DIN connectors for the
>> 338 keyboard.
543 339
544 CPUs without h/w unaligned access su !! 340 config ALPHA_EV4
545 Loongson-2K500/2K1000. !! 341 bool
>> 342 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
>> 343 default y if !ALPHA_LYNX
546 344
547 This option is enabled by default to !! 345 config ALPHA_LCA
548 on all LoongArch systems. But you ca !! 346 bool
549 to run kernel only on systems with h !! 347 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
550 order to optimise for performance. !! 348 default y
551 349
552 config CPU_HAS_FPU !! 350 config ALPHA_APECS
553 bool 351 bool
>> 352 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
554 default y 353 default y
555 354
556 config CPU_HAS_LSX !! 355 config ALPHA_EB64P
557 bool "Support for the Loongson SIMD Ex !! 356 bool
558 depends on AS_HAS_LSX_EXTENSION !! 357 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 358 default y
559 help 359 help
560 Loongson SIMD Extension (LSX) introd !! 360 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
561 and a set of SIMD instructions to op !! 361 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
562 is enabled the kernel will support a !! 362 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
563 vector register contexts. If you kno !! 363 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
564 running on CPUs which do not support !! 364 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
565 not be making use of it then you may !! 365 Runs from standard PC power supply.
566 the size & complexity of your kernel <<
567 366
568 If unsure, say Y. !! 367 config ALPHA_EV5
>> 368 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 369 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
569 370
570 config CPU_HAS_LASX !! 371 config ALPHA_EV4
571 bool "Support for the Loongson Advance !! 372 bool
572 depends on CPU_HAS_LSX !! 373 default y if ALPHA_LYNX && !ALPHA_EV5
573 depends on AS_HAS_LASX_EXTENSION !! 374
574 help !! 375 config ALPHA_CIA
575 Loongson Advanced SIMD Extension (LA !! 376 bool
576 registers and a set of SIMD instruct !! 377 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 !! 378 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 <<
582 379
583 If unsure, say Y. !! 380 config ALPHA_EV56
>> 381 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 382 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
584 383
585 config CPU_HAS_LBT !! 384 config ALPHA_EV56
586 bool "Support for the Loongson Binary !! 385 prompt "EV56 CPU (speed >= 333MHz)?"
587 depends on AS_HAS_LBT_EXTENSION !! 386 depends on ALPHA_NORITAKE || ALPHA_PRIMO
>> 387
>> 388 config ALPHA_EV56
>> 389 prompt "EV56 CPU (speed >= 400MHz)?"
>> 390 depends on ALPHA_RAWHIDE
>> 391
>> 392 config ALPHA_PRIMO
>> 393 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 394 depends on ALPHA_NORITAKE || ALPHA_MIKASA
588 help 395 help
589 Loongson Binary Translation (LBT) in !! 396 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. <<
593 397
594 If you want to use this feature, suc !! 398 config ALPHA_GAMMA
595 Translator (LAT), say Y. !! 399 bool "EV5 CPU(s) (model 5/xxx)?"
>> 400 depends on ALPHA_SABLE
>> 401 help
>> 402 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
596 403
597 config CPU_HAS_PREFETCH !! 404 config ALPHA_GAMMA
598 bool 405 bool
>> 406 depends on ALPHA_LYNX
599 default y 407 default y
600 408
601 config ARCH_SUPPORTS_KEXEC !! 409 config ALPHA_T2
602 def_bool y !! 410 bool
>> 411 depends on ALPHA_SABLE || ALPHA_LYNX
>> 412 default y
603 413
604 config ARCH_SUPPORTS_CRASH_DUMP !! 414 config ALPHA_PYXIS
605 def_bool y !! 415 bool
>> 416 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 417 default y
606 418
607 config ARCH_SELECTS_CRASH_DUMP !! 419 config ALPHA_EV6
608 def_bool y !! 420 bool
609 depends on CRASH_DUMP !! 421 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
610 select RELOCATABLE !! 422 default y
611 423
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 424 config ALPHA_TSUNAMI
613 def_bool CRASH_RESERVE !! 425 bool
>> 426 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 427 default y
614 428
615 config RELOCATABLE !! 429 config ALPHA_EV67
616 bool "Relocatable kernel" !! 430 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
617 select ARCH_HAS_RELR !! 431 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
618 help 432 help
619 This builds the kernel as a Position !! 433 Is this a machine based on the EV67 core? If in doubt, select N here
620 which retains all relocation metadat !! 434 and the machine will be treated as an EV6.
621 the kernel binary at runtime to a di <<
622 its link address. <<
623 435
624 config RANDOMIZE_BASE !! 436 config ALPHA_MCPCIA
625 bool "Randomize the address of the ker !! 437 bool
626 depends on RELOCATABLE !! 438 depends on ALPHA_RAWHIDE
627 help !! 439 default y
628 Randomizes the physical and virtual !! 440
629 kernel image is loaded, as a securi !! 441 config ALPHA_POLARIS
630 deters exploit attempts relying on !! 442 bool
631 of kernel internals. !! 443 depends on ALPHA_RX164
>> 444 default y
632 445
633 The kernel will be offset by up to !! 446 config ALPHA_IRONGATE
>> 447 bool
>> 448 depends on ALPHA_NAUTILUS
>> 449 default y
634 450
635 If unsure, say N. !! 451 config GENERIC_HWEIGHT
>> 452 bool
>> 453 default y if !ALPHA_EV67
636 454
637 config RANDOMIZE_BASE_MAX_OFFSET !! 455 config ALPHA_AVANTI
638 hex "Maximum KASLR offset" if EXPERT !! 456 bool
639 depends on RANDOMIZE_BASE !! 457 depends on ALPHA_XL || ALPHA_AVANTI_CH
640 range 0x0 0x10000000 !! 458 default y
641 default "0x01000000" <<
642 help 459 help
643 When KASLR is active, this provides !! 460 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
644 be applied to the kernel image. It s !! 461 Alphas. Info at
645 amount of physical RAM available in !! 462 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
646 463
647 This is limited by the size of the l !! 464 config ALPHA_BROKEN_IRQ_MASK
>> 465 bool
>> 466 depends on ALPHA_GENERIC || ALPHA_PC164
>> 467 default y
>> 468
>> 469 config VGA_HOSE
>> 470 bool
>> 471 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 472 default y
>> 473 help
>> 474 Support VGA on an arbitrary hose; needed for several platforms
>> 475 which always have multiple hoses, and whose consoles support it.
648 476
649 source "kernel/livepatch/Kconfig" <<
650 477
651 config PARAVIRT !! 478 config ALPHA_QEMU
652 bool "Enable paravirtualization code" !! 479 bool "Run under QEMU emulation"
653 depends on AS_HAS_LVZ_EXTENSION !! 480 depends on !ALPHA_GENERIC
654 help 481 help
655 This changes the kernel so it can mo !! 482 Assume the presence of special features supported by QEMU PALcode
656 under a hypervisor, potentially impr !! 483 that reduce the overhead of system emulation.
657 over full virtualization. However, !! 484
658 the kernel is theoretically slower a !! 485 Generic kernels will auto-detect QEMU. But when building a
>> 486 system-specific kernel, the assumption is that we want to
>> 487 eliminate as many runtime tests as possible.
>> 488
>> 489 If unsure, say N.
>> 490
659 491
660 config PARAVIRT_TIME_ACCOUNTING !! 492 config ALPHA_SRM
661 bool "Paravirtual steal time accountin !! 493 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 !! 494 depends on TTY
>> 495 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 496 help
664 Select this option to enable fine gr !! 497 There are two different types of booting firmware on Alphas: SRM,
665 accounting. Time spent executing oth !! 498 which is command line driven, and ARC, which uses menus and arrow
666 the current vCPU is discounted from !! 499 keys. Details about the Linux/Alpha booting process are contained in
667 that, there can be a small performan !! 500 the Linux/Alpha FAQ, accessible on the WWW from
>> 501 <http://www.alphalinux.org/>.
668 502
669 If in doubt, say N here. !! 503 The usual way to load Linux on an Alpha machine is to use MILO
>> 504 (a bootloader that lets you pass command line parameters to the
>> 505 kernel just like lilo does for the x86 architecture) which can be
>> 506 loaded either from ARC or can be installed directly as a permanent
>> 507 firmware replacement from floppy (which requires changing a certain
>> 508 jumper on the motherboard). If you want to do either of these, say N
>> 509 here. If MILO doesn't work on your system (true for Jensen
>> 510 motherboards), you can bypass it altogether and boot Linux directly
>> 511 from an SRM console; say Y here in order to do that. Note that you
>> 512 won't be able to boot from an IDE disk using SRM.
670 513
671 endmenu !! 514 If unsure, say N.
672 515
673 config ARCH_SELECT_MEMORY_MODEL !! 516 config ARCH_MAY_HAVE_PC_FDC
674 def_bool y 517 def_bool y
675 518
676 config ARCH_FLATMEM_ENABLE !! 519 config SMP
677 def_bool y !! 520 bool "Symmetric multi-processing support"
678 depends on !NUMA !! 521 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 522 help
>> 523 This enables support for systems with more than one CPU. If you have
>> 524 a system with only one CPU, say N. If you have a system with more
>> 525 than one CPU, say Y.
>> 526
>> 527 If you say N here, the kernel will run on uni- and multiprocessor
>> 528 machines, but will use only one CPU of a multiprocessor machine. If
>> 529 you say Y here, the kernel will run on many, but not all,
>> 530 uniprocessor machines. On a uniprocessor machine, the kernel
>> 531 will run faster if you say N here.
>> 532
>> 533 See also the SMP-HOWTO available at
>> 534 <https://www.tldp.org/docs.html#howto>.
>> 535
>> 536 If you don't know what to do here, say N.
>> 537
>> 538 config NR_CPUS
>> 539 int "Maximum number of CPUs (2-32)"
>> 540 range 2 32
>> 541 depends on SMP
>> 542 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 543 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
>> 544 help
>> 545 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 546 with working support have a maximum of 4 CPUs.
679 547
680 config ARCH_SPARSEMEM_ENABLE 548 config ARCH_SPARSEMEM_ENABLE
681 def_bool y !! 549 bool "Sparse Memory Support"
682 select SPARSEMEM_VMEMMAP_ENABLE <<
683 help 550 help
684 Say Y to support efficient handling !! 551 Say Y to support efficient handling of discontiguous physical memory,
685 for architectures which are either N !! 552 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> <<
688 553
689 config ARCH_MEMORY_PROBE !! 554 config ALPHA_WTINT
690 def_bool y !! 555 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
691 depends on MEMORY_HOTPLUG !! 556 default y if ALPHA_QEMU
>> 557 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 558 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 559 default y if SMP
>> 560 help
>> 561 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 562 to sleep until the next interrupt. This may reduce the power
>> 563 consumed, and the heat produced by the computer. However, it has
>> 564 the side effect of making the cycle counter unreliable as a timing
>> 565 device across the sleep.
692 566
693 config MMU !! 567 For emulation under QEMU, definitely say Y here, as we have other
>> 568 mechanisms for measuring time than the cycle counter.
>> 569
>> 570 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
>> 571 MILO, sleep mode is not supported so you might as well say N here.
>> 572
>> 573 For SMP systems we cannot use the cycle counter for timing anyway,
>> 574 so you might as well say Y here.
>> 575
>> 576 If unsure, say N.
>> 577
>> 578 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 579 config ALPHA_LARGE_VMALLOC
694 bool 580 bool
695 default y !! 581 help
>> 582 Process creation and other aspects of virtual memory management can
>> 583 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 584 allocations. This equates to about 8GB.
696 585
697 config ARCH_MMAP_RND_BITS_MIN !! 586 Under normal circumstances, this is so far and above what is needed
698 default 12 !! 587 as to be laughable. However, there are certain applications (such
>> 588 as benchmark-grade in-kernel web serving) that can make use of as
>> 589 much vmalloc space as is available.
699 590
700 config ARCH_MMAP_RND_BITS_MAX !! 591 Say N unless you know you need gobs and gobs of vmalloc space.
701 default 18 <<
702 592
703 config ARCH_SUPPORTS_UPROBES !! 593 config VERBOSE_MCHECK
704 def_bool y !! 594 bool "Verbose Machine Checks"
705 595
706 config KASAN_SHADOW_OFFSET !! 596 config VERBOSE_MCHECK_ON
707 hex !! 597 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
708 default 0x0 !! 598 depends on VERBOSE_MCHECK
709 depends on KASAN !! 599 default 1
>> 600 help
>> 601 This option allows the default printing mode to be set, and then
>> 602 possibly overridden by a boot command argument.
710 603
711 menu "Power management options" !! 604 For example, if one wanted the option of printing verbose
>> 605 machine checks, but wanted the default to be as if verbose
>> 606 machine check printing was turned off, then one would choose
>> 607 the printing mode to be 0. Then, upon reboot, one could add
>> 608 the boot command line "verbose_mcheck=1" to get the normal
>> 609 verbose machine check printing, or "verbose_mcheck=2" to get
>> 610 the maximum information available.
712 611
713 config ARCH_SUSPEND_POSSIBLE !! 612 Take the default (1) unless you want more control or more info.
714 def_bool y <<
715 613
716 config ARCH_HIBERNATION_POSSIBLE !! 614 choice
717 def_bool y !! 615 prompt "Timer interrupt frequency (HZ)?"
>> 616 default HZ_128 if ALPHA_QEMU
>> 617 default HZ_1200 if ALPHA_RAWHIDE
>> 618 default HZ_1024
>> 619 help
>> 620 The frequency at which timer interrupts occur. A high frequency
>> 621 minimizes latency, whereas a low frequency minimizes overhead of
>> 622 process accounting. The later effect is especially significant
>> 623 when being run under QEMU.
>> 624
>> 625 Note that some Alpha hardware cannot change the interrupt frequency
>> 626 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 627
>> 628 config HZ_32
>> 629 bool "32 Hz"
>> 630 config HZ_64
>> 631 bool "64 Hz"
>> 632 config HZ_128
>> 633 bool "128 Hz"
>> 634 config HZ_256
>> 635 bool "256 Hz"
>> 636 config HZ_1024
>> 637 bool "1024 Hz"
>> 638 config HZ_1200
>> 639 bool "1200 Hz"
>> 640 endchoice
>> 641
>> 642 config HZ
>> 643 int
>> 644 default 32 if HZ_32
>> 645 default 64 if HZ_64
>> 646 default 128 if HZ_128
>> 647 default 256 if HZ_256
>> 648 default 1200 if HZ_1200
>> 649 default 1024
>> 650
>> 651 config SRM_ENV
>> 652 tristate "SRM environment through procfs"
>> 653 depends on PROC_FS
>> 654 help
>> 655 If you enable this option, a subdirectory inside /proc called
>> 656 /proc/srm_environment will give you access to the all important
>> 657 SRM environment variables (those which have a name) and also
>> 658 to all others (by their internal number).
>> 659
>> 660 SRM is something like a BIOS for Alpha machines. There are some
>> 661 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 662 support (hey, that's not SRM!).
>> 663
>> 664 Despite the fact that this driver doesn't work on all Alphas (but
>> 665 only on those which have SRM as their firmware), it's save to
>> 666 build it even if your particular machine doesn't know about SRM
>> 667 (or if you intend to compile a generic kernel). It will simply
>> 668 not create those subdirectory in /proc (and give you some warning,
>> 669 of course).
718 670
719 source "kernel/power/Kconfig" !! 671 This driver is also available as a module and will be called
720 source "drivers/acpi/Kconfig" !! 672 srm_env then.
721 source "drivers/cpufreq/Kconfig" <<
722 673
723 endmenu 674 endmenu
724 675
725 source "arch/loongarch/kvm/Kconfig" !! 676 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 677 # but we also need it if VGA_HOSE is set
>> 678 config DUMMY_CONSOLE
>> 679 bool
>> 680 depends on VGA_HOSE
>> 681 default y
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