1 # SPDX-License-Identifier: GPL-2.0 !! 1 config ALPHA
2 config LOONGARCH <<
3 bool 2 bool
4 default y 3 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 4 select ARCH_MIGHT_HAVE_PC_PARPORT
59 select ARCH_MIGHT_HAVE_PC_SERIO 5 select ARCH_MIGHT_HAVE_PC_SERIO
60 select ARCH_SPARSEMEM_ENABLE <<
61 select ARCH_STACKWALK <<
62 select ARCH_SUPPORTS_ACPI <<
63 select ARCH_SUPPORTS_ATOMIC_RMW <<
64 select ARCH_SUPPORTS_HUGETLBFS <<
65 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
66 select ARCH_SUPPORTS_LTO_CLANG <<
67 select ARCH_SUPPORTS_LTO_CLANG_THIN <<
68 select ARCH_SUPPORTS_NUMA_BALANCING <<
69 select ARCH_USE_BUILTIN_BSWAP <<
70 select ARCH_USE_CMPXCHG_LOCKREF 6 select ARCH_USE_CMPXCHG_LOCKREF
71 select ARCH_USE_QUEUED_RWLOCKS !! 7 select HAVE_AOUT
72 select ARCH_USE_QUEUED_SPINLOCKS !! 8 select HAVE_IDE
73 select ARCH_WANT_DEFAULT_BPF_JIT !! 9 select HAVE_OPROFILE
74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ !! 10 select HAVE_PCSPKR_PLATFORM
75 select ARCH_WANT_LD_ORPHAN_WARN !! 11 select HAVE_PERF_EVENTS
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM !! 12 select VIRT_TO_BUS
77 select ARCH_WANTS_NO_INSTR <<
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC <<
79 select BUILDTIME_TABLE_SORT <<
80 select COMMON_CLK <<
81 select CPU_PM <<
82 select EFI <<
83 select GENERIC_CLOCKEVENTS <<
84 select GENERIC_CMOS_UPDATE <<
85 select GENERIC_CPU_AUTOPROBE <<
86 select GENERIC_CPU_DEVICES <<
87 select GENERIC_CPU_VULNERABILITIES <<
88 select GENERIC_ENTRY <<
89 select GENERIC_GETTIMEOFDAY <<
90 select GENERIC_IOREMAP if !ARCH_IOREMA <<
91 select GENERIC_IRQ_MATRIX_ALLOCATOR <<
92 select GENERIC_IRQ_MULTI_HANDLER <<
93 select GENERIC_IRQ_PROBE 13 select GENERIC_IRQ_PROBE
>> 14 select AUTO_IRQ_AFFINITY if SMP
94 select GENERIC_IRQ_SHOW 15 select GENERIC_IRQ_SHOW
95 select GENERIC_LIB_ASHLDI3 !! 16 select ARCH_WANT_IPC_PARSE_VERSION
96 select GENERIC_LIB_ASHRDI3 !! 17 select ARCH_HAVE_NMI_SAFE_CMPXCHG
97 select GENERIC_LIB_CMPDI2 !! 18 select AUDIT_ARCH
98 select GENERIC_LIB_LSHRDI3 !! 19 select GENERIC_CLOCKEVENTS
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 20 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL !! 21 select GENERIC_STRNCPY_FROM_USER
105 select GENERIC_VDSO_TIME_NS !! 22 select GENERIC_STRNLEN_USER
106 select GPIOLIB <<
107 select HAS_IOPORT <<
108 select HAVE_ARCH_AUDITSYSCALL 23 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 24 select HAVE_MOD_ARCH_SPECIFIC
152 select HAVE_NMI !! 25 select MODULES_USE_ELF_RELA
153 select HAVE_OBJTOOL if AS_HAS_EXPLICIT !! 26 select ODD_RT_SIGACTION
154 select HAVE_PCI !! 27 select OLD_SIGSUSPEND
155 select HAVE_PERF_EVENTS !! 28 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
156 select HAVE_PERF_REGS !! 29 help
157 select HAVE_PERF_USER_STACK_DUMP !! 30 The Alpha is a 64-bit general-purpose processor designed and
158 select HAVE_PREEMPT_DYNAMIC_KEY !! 31 marketed by the Digital Equipment Corporation of blessed memory,
159 select HAVE_REGS_AND_STACK_ACCESS_API !! 32 now Hewlett-Packard. The Alpha Linux project has a home page at
160 select HAVE_RELIABLE_STACKTRACE if UNW !! 33 <http://www.alphalinux.org/>.
161 select HAVE_RETHOOK <<
162 select HAVE_RSEQ <<
163 select HAVE_RUST <<
164 select HAVE_SAMPLE_FTRACE_DIRECT <<
165 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
166 select HAVE_SETUP_PER_CPU_AREA if NUMA <<
167 select HAVE_STACK_VALIDATION if HAVE_O <<
168 select HAVE_STACKPROTECTOR <<
169 select HAVE_SYSCALL_TRACEPOINTS <<
170 select HAVE_TIF_NOHZ <<
171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if <<
172 select IRQ_FORCED_THREADING <<
173 select IRQ_LOONGARCH_CPU <<
174 select LOCK_MM_AND_FIND_VMA <<
175 select MMU_GATHER_MERGE_VMAS if MMU <<
176 select MODULES_USE_ELF_RELA if MODULES <<
177 select NEED_PER_CPU_EMBED_FIRST_CHUNK <<
178 select NEED_PER_CPU_PAGE_FIRST_CHUNK <<
179 select OF <<
180 select OF_EARLY_FLATTREE <<
181 select PCI <<
182 select PCI_DOMAINS_GENERIC <<
183 select PCI_ECAM if ACPI <<
184 select PCI_LOONGSON <<
185 select PCI_MSI_ARCH_FALLBACKS <<
186 select PCI_QUIRKS <<
187 select PERF_USE_VMALLOC <<
188 select RTC_LIB <<
189 select SPARSE_IRQ <<
190 select SYSCTL_ARCH_UNALIGN_ALLOW <<
191 select SYSCTL_ARCH_UNALIGN_NO_WARN <<
192 select SYSCTL_EXCEPTION_TRACE <<
193 select SWIOTLB <<
194 select TRACE_IRQFLAGS_SUPPORT <<
195 select USE_PERCPU_NUMA_NODE_ID <<
196 select USER_STACKTRACE_SUPPORT <<
197 select VDSO_GETRANDOM <<
198 select ZONE_DMA32 <<
199 <<
200 config 32BIT <<
201 bool <<
202 34
203 config 64BIT 35 config 64BIT
204 def_bool y 36 def_bool y
205 37
206 config GENERIC_BUG !! 38 config MMU
207 def_bool y !! 39 bool
208 depends on BUG !! 40 default y
209 <<
210 config GENERIC_BUG_RELATIVE_POINTERS <<
211 def_bool y <<
212 depends on GENERIC_BUG <<
213 41
214 config GENERIC_CALIBRATE_DELAY !! 42 config RWSEM_GENERIC_SPINLOCK
215 def_bool y !! 43 bool
216 44
217 config GENERIC_CSUM !! 45 config RWSEM_XCHGADD_ALGORITHM
218 def_bool y !! 46 bool
>> 47 default y
219 48
220 config GENERIC_HWEIGHT !! 49 config ARCH_HAS_ILOG2_U32
221 def_bool y !! 50 bool
>> 51 default n
222 52
223 config L1_CACHE_SHIFT !! 53 config ARCH_HAS_ILOG2_U64
224 int !! 54 bool
225 default "6" !! 55 default n
226 56
227 config LOCKDEP_SUPPORT !! 57 config GENERIC_CALIBRATE_DELAY
228 bool 58 bool
229 default y 59 default y
230 60
231 config STACKTRACE_SUPPORT !! 61 config ZONE_DMA
232 bool 62 bool
233 default y 63 default y
234 64
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli !! 65 config ARCH_DMA_ADDR_T_64BIT
236 # MIPS Loongson code, to preserve Loongson-spe <<
237 # are shared between architectures, and specif <<
238 config MACH_LOONGSON32 <<
239 def_bool 32BIT <<
240 <<
241 config MACH_LOONGSON64 <<
242 def_bool 64BIT <<
243 <<
244 config FIX_EARLYCON_MEM <<
245 def_bool y 66 def_bool y
246 67
247 config PGTABLE_2LEVEL !! 68 config NEED_DMA_MAP_STATE
248 bool !! 69 def_bool y
249 70
250 config PGTABLE_3LEVEL !! 71 config NEED_SG_DMA_LENGTH
251 bool !! 72 def_bool y
252 73
253 config PGTABLE_4LEVEL !! 74 config GENERIC_ISA_DMA
254 bool 75 bool
>> 76 default y
255 77
256 config PGTABLE_LEVELS 78 config PGTABLE_LEVELS
257 int 79 int
258 default 2 if PGTABLE_2LEVEL !! 80 default 3
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 81
262 config SCHED_OMIT_FRAME_POINTER !! 82 source "init/Kconfig"
263 bool !! 83 source "kernel/Kconfig.freezer"
264 default y <<
265 84
266 config AS_HAS_EXPLICIT_RELOCS !! 85 config AUDIT_ARCH
267 def_bool $(as-instr,x:pcalau12i \$t0$( !! 86 bool
268 87
269 config AS_HAS_FCSR_CLASS !! 88 menu "System setup"
270 def_bool $(as-instr,movfcsr2gr \$t0$(c <<
271 89
272 config AS_HAS_THIN_ADD_SUB !! 90 choice
273 def_bool $(cc-option,-Wa$(comma)-mthin !! 91 prompt "Alpha system type"
>> 92 default ALPHA_GENERIC
>> 93 ---help---
>> 94 This is the system type of your hardware. A "generic" kernel will
>> 95 run on any supported Alpha system. However, if you configure a
>> 96 kernel for your specific system, it will be faster and smaller.
274 97
275 config AS_HAS_LSX_EXTENSION !! 98 To find out what type of Alpha system you have, you may want to
276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 99 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 100 <http://www.alphalinux.org/>. In summary:
277 101
278 config AS_HAS_LASX_EXTENSION !! 102 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
279 def_bool $(as-instr,xvld \$xr0$(comma) !! 103 Alpha-XL XL-233, XL-266
>> 104 AlphaBook1 Alpha laptop
>> 105 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 106 Cabriolet AlphaPC64, AlphaPCI64
>> 107 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 108 EB164 EB164 21164 evaluation board
>> 109 EB64+ EB64+ 21064 evaluation board
>> 110 EB66 EB66 21066 evaluation board
>> 111 EB66+ EB66+ 21066 evaluation board
>> 112 Jensen DECpc 150, DEC 2000 models 300, 500
>> 113 LX164 AlphaPC164-LX
>> 114 Lynx AS 2100A
>> 115 Miata Personal Workstation 433/500/600 a/au
>> 116 Marvel AlphaServer ES47 / ES80 / GS1280
>> 117 Mikasa AS 1000
>> 118 Noname AXPpci33, UDB (Multia)
>> 119 Noritake AS 1000A, AS 600A, AS 800
>> 120 PC164 AlphaPC164
>> 121 Rawhide AS 1200, AS 4000, AS 4100
>> 122 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 123 SX164 AlphaPC164-SX
>> 124 Sable AS 2000, AS 2100
>> 125 Shark DS 20L
>> 126 Takara Takara (OEM)
>> 127 Titan AlphaServer ES45 / DS25 / DS15
>> 128 Wildfire AlphaServer GS 40/80/160/320
280 129
281 config AS_HAS_LBT_EXTENSION !! 130 If you don't know what to do, choose "generic".
282 def_bool $(as-instr,movscr2gr \$a0$(co <<
283 131
284 config AS_HAS_LVZ_EXTENSION !! 132 config ALPHA_GENERIC
285 def_bool $(as-instr,hvcl 0) !! 133 bool "Generic"
>> 134 depends on TTY
>> 135 help
>> 136 A generic kernel will run on all supported Alpha hardware.
286 137
287 menu "Kernel type and options" !! 138 config ALPHA_ALCOR
>> 139 bool "Alcor/Alpha-XLT"
>> 140 help
>> 141 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 142 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 143 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 144 controller (256-bit memory bus) and a PCI interface. It also does
>> 145 all the work required to support an external Bcache and to maintain
>> 146 memory coherence when a PCI device DMAs into (or out of) memory.
288 147
289 source "kernel/Kconfig.hz" !! 148 config ALPHA_XL
>> 149 bool "Alpha-XL"
>> 150 help
>> 151 XL-233 and XL-266-based Alpha systems.
290 152
291 choice !! 153 config ALPHA_BOOK1
292 prompt "Page Table Layout" !! 154 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 155 help
345 This option selects 64KB page size w !! 156 Dec AlphaBook1/Burns Alpha-based laptops.
346 support a maximum of 55 bits of appl <<
347 157
348 endchoice !! 158 config ALPHA_AVANTI_CH
>> 159 bool "Avanti"
349 160
350 config CMDLINE !! 161 config ALPHA_CABRIOLET
351 string "Built-in kernel command line" !! 162 bool "Cabriolet"
352 help 163 help
353 For most platforms, the arguments fo !! 164 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
354 are provided at run-time, during boo !! 165 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
355 where either no arguments are being !! 166 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
356 arguments are insufficient or even i !! 167 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 <<
360 168
361 choice !! 169 config ALPHA_DP264
362 prompt "Kernel command line type" !! 170 bool "DP264"
363 default CMDLINE_BOOTLOADER <<
364 help 171 help
365 Choose how the kernel will handle th !! 172 Various 21264 systems with the tsunami core logic chipset.
366 line. !! 173 API Networks: 264DP, UP2000(+), CS20;
>> 174 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
367 175
368 config CMDLINE_BOOTLOADER !! 176 config ALPHA_EB164
369 bool "Use bootloader kernel arguments !! 177 bool "EB164"
370 help 178 help
371 Prefer the command-line passed by th !! 179 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
372 Use the built-in command line as fal !! 180 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
373 during boot. This is the default beh !! 181 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
374 !! 182 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
375 config CMDLINE_EXTEND !! 183 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
376 bool "Use built-in to extend bootloade !! 184 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. <<
390 185
391 endchoice !! 186 config ALPHA_EB64P_CH
>> 187 bool "EB64+"
392 188
393 config BUILTIN_DTB !! 189 config ALPHA_EB66
394 bool "Enable built-in dtb in kernel" !! 190 bool "EB66"
395 depends on OF <<
396 help 191 help
397 Some existing systems do not provide !! 192 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
398 the kernel at boot time. Let's provi !! 193 identical to EB64+. Baby PC-AT size. Runs from standard PC power
399 kernel, keyed by the dts filename, c !! 194 supply. The EB66 schematic was published as a marketing poster
>> 195 advertising the 21066 as "the first microprocessor in the world with
>> 196 embedded PCI".
400 197
401 Built-in DTBs are generic enough and !! 198 config ALPHA_EB66P
>> 199 bool "EB66+"
>> 200 help
>> 201 Later variant of the EB66 board.
402 202
403 config BUILTIN_DTB_NAME !! 203 config ALPHA_EIGER
404 string "Source file for built-in dtb" !! 204 bool "Eiger"
405 depends on BUILTIN_DTB <<
406 help 205 help
407 Base name (without suffix, relative !! 206 Apparently an obscure OEM single-board computer based on the
408 for the DTS file that will be used t !! 207 Typhoon/Tsunami chipset family. Information on it is scanty.
409 the kernel. <<
410 208
411 config DMI !! 209 config ALPHA_JENSEN
412 bool "Enable DMI scanning" !! 210 bool "Jensen"
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA <<
414 default y <<
415 help 211 help
416 This enables SMBIOS/DMI feature for !! 212 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
417 DMI to identify machine quirks. !! 213 of the first-generation Alpha systems. A number of these systems
>> 214 seem to be available on the second- hand market. The Jensen is a
>> 215 floor-standing tower system which originally used a 150MHz 21064 It
>> 216 used programmable logic to interface a 486 EISA I/O bridge to the
>> 217 CPU.
418 218
419 config EFI !! 219 config ALPHA_LX164
420 bool "EFI runtime service support" !! 220 bool "LX164"
421 select UCS2_STRING <<
422 select EFI_RUNTIME_WRAPPERS <<
423 help 221 help
424 This enables the kernel to use EFI r !! 222 A technical overview of this board is available at
425 available (such as the EFI variable !! 223 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
426 224
427 config EFI_STUB !! 225 config ALPHA_LYNX
428 bool "EFI boot stub support" !! 226 bool "Lynx"
429 default y <<
430 depends on EFI <<
431 select EFI_GENERIC_STUB <<
432 help 227 help
433 This kernel feature allows the kerne !! 228 AlphaServer 2100A-based systems.
434 EFI firmware without the use of a bo <<
435 229
436 config SCHED_SMT !! 230 config ALPHA_MARVEL
437 bool "SMT scheduler support" !! 231 bool "Marvel"
438 depends on SMP <<
439 default y <<
440 help 232 help
441 Improves scheduler's performance whe !! 233 AlphaServer ES47 / ES80 / GS1280 based on EV7.
442 threads in one physical core. <<
443 234
444 config SMP !! 235 config ALPHA_MIATA
445 bool "Multi-Processing support" !! 236 bool "Miata"
446 help 237 help
447 This enables support for systems wit !! 238 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
448 a system with only one CPU, say N. I !! 239 or 600au).
449 than one CPU, say Y. <<
450 240
451 If you say N here, the kernel will r !! 241 config ALPHA_MIKASA
452 machines, but will use only one CPU !! 242 bool "Mikasa"
453 you say Y here, the kernel will run !! 243 help
454 uniprocessor machines. On a uniproce !! 244 AlphaServer 1000-based Alpha systems.
455 will run faster if you say N here. <<
456 245
457 See also the SMP-HOWTO available at !! 246 config ALPHA_NAUTILUS
>> 247 bool "Nautilus"
>> 248 help
>> 249 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
458 250
459 If you don't know what to do here, s !! 251 config ALPHA_NONAME_CH
>> 252 bool "Noname"
460 253
461 config HOTPLUG_CPU !! 254 config ALPHA_NORITAKE
462 bool "Support for hot-pluggable CPUs" !! 255 bool "Noritake"
463 depends on SMP <<
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"
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" <<
493 depends on NUMA <<
494 281
495 config ARCH_FORCE_MAX_ORDER !! 282 config ALPHA_SX164
496 int "Maximum zone order" !! 283 bool "SX164"
497 default "13" if PAGE_SIZE_64KB !! 284
498 default "11" if PAGE_SIZE_16KB !! 285 config ALPHA_SABLE
499 default "10" !! 286 bool "Sable"
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
540 !! 319 inside your box. Other bus systems are PCI, EISA, MicroChannel
541 CPUs with h/w unaligned access suppo !! 320 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 321 newer boards don't support it. If you have ISA, say Y, otherwise N.
543 322
544 CPUs without h/w unaligned access su !! 323 config ISA_DMA_API
545 Loongson-2K500/2K1000. !! 324 bool
>> 325 default y
546 326
547 This option is enabled by default to !! 327 config PCI
548 on all LoongArch systems. But you ca !! 328 bool
549 to run kernel only on systems with h !! 329 depends on !ALPHA_JENSEN
550 order to optimise for performance. !! 330 select GENERIC_PCI_IOMAP
>> 331 default y
>> 332 help
>> 333 Find out whether you have a PCI motherboard. PCI is the name of a
>> 334 bus system, i.e. the way the CPU talks to the other stuff inside
>> 335 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
>> 336 VESA. If you have PCI, say Y, otherwise N.
551 337
552 config CPU_HAS_FPU !! 338 config PCI_DOMAINS
553 bool 339 bool
554 default y 340 default y
555 341
556 config CPU_HAS_LSX !! 342 config PCI_SYSCALL
557 bool "Support for the Loongson SIMD Ex !! 343 def_bool PCI
558 depends on AS_HAS_LSX_EXTENSION <<
559 help <<
560 Loongson SIMD Extension (LSX) introd <<
561 and a set of SIMD instructions to op <<
562 is enabled the kernel will support a <<
563 vector register contexts. If you kno <<
564 running on CPUs which do not support <<
565 not be making use of it then you may <<
566 the size & complexity of your kernel <<
567 344
568 If unsure, say Y. !! 345 config IOMMU_HELPER
>> 346 def_bool PCI
569 347
570 config CPU_HAS_LASX !! 348 config ALPHA_NONAME
571 bool "Support for the Loongson Advance !! 349 bool
572 depends on CPU_HAS_LSX !! 350 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
573 depends on AS_HAS_LASX_EXTENSION !! 351 default y
574 help 352 help
575 Loongson Advanced SIMD Extension (LA !! 353 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
576 registers and a set of SIMD instruct !! 354 UDB). This design was produced by Digital's Technical OEM (TOEM)
577 option is enabled the kernel will su !! 355 group. It uses the 21066 processor running at 166MHz or 233MHz. It
578 vector register contexts. If you kno !! 356 is a baby-AT size, and runs from a standard PC power supply. It has
579 running on CPUs which do not support !! 357 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
580 not be making use of it then you may !! 358 2 versions, with either PS/2 or large DIN connectors for the
581 the size & complexity of your kernel !! 359 keyboard.
582 360
583 If unsure, say Y. !! 361 config ALPHA_EV4
>> 362 bool
>> 363 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
>> 364 default y if !ALPHA_LYNX
584 365
585 config CPU_HAS_LBT !! 366 config ALPHA_LCA
586 bool "Support for the Loongson Binary !! 367 bool
587 depends on AS_HAS_LBT_EXTENSION !! 368 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
588 help !! 369 default y
589 Loongson Binary Translation (LBT) in <<
590 to SCR3), x86/ARM eflags (eflags) an <<
591 Enabling this option allows the kern <<
592 specific to LBT. <<
593 370
594 If you want to use this feature, suc !! 371 config ALPHA_APECS
595 Translator (LAT), say Y. !! 372 bool
>> 373 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 374 default y
596 375
597 config CPU_HAS_PREFETCH !! 376 config ALPHA_EB64P
598 bool 377 bool
>> 378 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
599 default y 379 default y
>> 380 help
>> 381 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
>> 382 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
>> 383 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 384 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 385 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 386 Runs from standard PC power supply.
600 387
601 config ARCH_SUPPORTS_KEXEC !! 388 config ALPHA_EV5
602 def_bool y !! 389 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 390 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
603 391
604 config ARCH_SUPPORTS_CRASH_DUMP !! 392 config ALPHA_EV4
605 def_bool y !! 393 bool
>> 394 default y if ALPHA_LYNX && !ALPHA_EV5
606 395
607 config ARCH_SELECTS_CRASH_DUMP !! 396 config ALPHA_CIA
608 def_bool y !! 397 bool
609 depends on CRASH_DUMP !! 398 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
610 select RELOCATABLE !! 399 default y
>> 400
>> 401 config ALPHA_EV56
>> 402 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 403 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
611 404
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 405 config ALPHA_EV56
613 def_bool CRASH_RESERVE !! 406 prompt "EV56 CPU (speed >= 333MHz)?"
>> 407 depends on ALPHA_NORITAKE || ALPHA_PRIMO
614 408
615 config RELOCATABLE !! 409 config ALPHA_EV56
616 bool "Relocatable kernel" !! 410 prompt "EV56 CPU (speed >= 400MHz)?"
617 select ARCH_HAS_RELR !! 411 depends on ALPHA_RAWHIDE
>> 412
>> 413 config ALPHA_PRIMO
>> 414 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 415 depends on ALPHA_NORITAKE || ALPHA_MIKASA
618 help 416 help
619 This builds the kernel as a Position !! 417 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
620 which retains all relocation metadat <<
621 the kernel binary at runtime to a di <<
622 its link address. <<
623 418
624 config RANDOMIZE_BASE !! 419 config ALPHA_GAMMA
625 bool "Randomize the address of the ker !! 420 bool "EV5 CPU(s) (model 5/xxx)?"
626 depends on RELOCATABLE !! 421 depends on ALPHA_SABLE
627 help 422 help
628 Randomizes the physical and virtual !! 423 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
629 kernel image is loaded, as a securi !! 424
630 deters exploit attempts relying on !! 425 config ALPHA_GAMMA
631 of kernel internals. !! 426 bool
>> 427 depends on ALPHA_LYNX
>> 428 default y
>> 429
>> 430 config ALPHA_T2
>> 431 bool
>> 432 depends on ALPHA_SABLE || ALPHA_LYNX
>> 433 default y
>> 434
>> 435 config ALPHA_PYXIS
>> 436 bool
>> 437 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 438 default y
632 439
633 The kernel will be offset by up to !! 440 config ALPHA_EV6
>> 441 bool
>> 442 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
>> 443 default y
634 444
635 If unsure, say N. !! 445 config ALPHA_TSUNAMI
>> 446 bool
>> 447 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 448 default y
636 449
637 config RANDOMIZE_BASE_MAX_OFFSET !! 450 config ALPHA_EV67
638 hex "Maximum KASLR offset" if EXPERT !! 451 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
639 depends on RANDOMIZE_BASE !! 452 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
640 range 0x0 0x10000000 <<
641 default "0x01000000" <<
642 help 453 help
643 When KASLR is active, this provides !! 454 Is this a machine based on the EV67 core? If in doubt, select N here
644 be applied to the kernel image. It s !! 455 and the machine will be treated as an EV6.
645 amount of physical RAM available in !! 456
>> 457 config ALPHA_MCPCIA
>> 458 bool
>> 459 depends on ALPHA_RAWHIDE
>> 460 default y
646 461
647 This is limited by the size of the l !! 462 config ALPHA_POLARIS
>> 463 bool
>> 464 depends on ALPHA_RX164
>> 465 default y
648 466
649 source "kernel/livepatch/Kconfig" !! 467 config ALPHA_IRONGATE
>> 468 bool
>> 469 depends on ALPHA_NAUTILUS
>> 470 default y
650 471
651 config PARAVIRT !! 472 config GENERIC_HWEIGHT
652 bool "Enable paravirtualization code" !! 473 bool
653 depends on AS_HAS_LVZ_EXTENSION !! 474 default y if !ALPHA_EV67
>> 475
>> 476 config ALPHA_AVANTI
>> 477 bool
>> 478 depends on ALPHA_XL || ALPHA_AVANTI_CH
>> 479 default y
654 help 480 help
655 This changes the kernel so it can mo !! 481 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
656 under a hypervisor, potentially impr !! 482 Alphas. Info at
657 over full virtualization. However, !! 483 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
658 the kernel is theoretically slower a !! 484
>> 485 config ALPHA_BROKEN_IRQ_MASK
>> 486 bool
>> 487 depends on ALPHA_GENERIC || ALPHA_PC164
>> 488 default y
659 489
660 config PARAVIRT_TIME_ACCOUNTING !! 490 config VGA_HOSE
661 bool "Paravirtual steal time accountin !! 491 bool
662 depends on PARAVIRT !! 492 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 493 default y
663 help 494 help
664 Select this option to enable fine gr !! 495 Support VGA on an arbitrary hose; needed for several platforms
665 accounting. Time spent executing oth !! 496 which always have multiple hoses, and whose consoles support it.
666 the current vCPU is discounted from <<
667 that, there can be a small performan <<
668 497
669 If in doubt, say N here. <<
670 498
671 endmenu !! 499 config ALPHA_QEMU
>> 500 bool "Run under QEMU emulation"
>> 501 depends on !ALPHA_GENERIC
>> 502 ---help---
>> 503 Assume the presence of special features supported by QEMU PALcode
>> 504 that reduce the overhead of system emulation.
672 505
673 config ARCH_SELECT_MEMORY_MODEL !! 506 Generic kernels will auto-detect QEMU. But when building a
674 def_bool y !! 507 system-specific kernel, the assumption is that we want to
>> 508 elimiate as many runtime tests as possible.
675 509
676 config ARCH_FLATMEM_ENABLE !! 510 If unsure, say N.
677 def_bool y !! 511
678 depends on !NUMA !! 512
>> 513 config ALPHA_SRM
>> 514 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
>> 515 depends on TTY
>> 516 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
>> 517 ---help---
>> 518 There are two different types of booting firmware on Alphas: SRM,
>> 519 which is command line driven, and ARC, which uses menus and arrow
>> 520 keys. Details about the Linux/Alpha booting process are contained in
>> 521 the Linux/Alpha FAQ, accessible on the WWW from
>> 522 <http://www.alphalinux.org/>.
679 523
680 config ARCH_SPARSEMEM_ENABLE !! 524 The usual way to load Linux on an Alpha machine is to use MILO
>> 525 (a bootloader that lets you pass command line parameters to the
>> 526 kernel just like lilo does for the x86 architecture) which can be
>> 527 loaded either from ARC or can be installed directly as a permanent
>> 528 firmware replacement from floppy (which requires changing a certain
>> 529 jumper on the motherboard). If you want to do either of these, say N
>> 530 here. If MILO doesn't work on your system (true for Jensen
>> 531 motherboards), you can bypass it altogether and boot Linux directly
>> 532 from an SRM console; say Y here in order to do that. Note that you
>> 533 won't be able to boot from an IDE disk using SRM.
>> 534
>> 535 If unsure, say N.
>> 536
>> 537 config EISA
>> 538 bool
>> 539 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
>> 540 default y
>> 541
>> 542 config ARCH_MAY_HAVE_PC_FDC
681 def_bool y 543 def_bool y
682 select SPARSEMEM_VMEMMAP_ENABLE !! 544
>> 545 config SMP
>> 546 bool "Symmetric multi-processing support"
>> 547 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 548 ---help---
>> 549 This enables support for systems with more than one CPU. If you have
>> 550 a system with only one CPU, say N. If you have a system with more
>> 551 than one CPU, say Y.
>> 552
>> 553 If you say N here, the kernel will run on uni- and multiprocessor
>> 554 machines, but will use only one CPU of a multiprocessor machine. If
>> 555 you say Y here, the kernel will run on many, but not all,
>> 556 uniprocessor machines. On a uniprocessor machine, the kernel
>> 557 will run faster if you say N here.
>> 558
>> 559 See also the SMP-HOWTO available at
>> 560 <http://www.tldp.org/docs.html#howto>.
>> 561
>> 562 If you don't know what to do here, say N.
>> 563
>> 564 config HAVE_DEC_LOCK
>> 565 bool
>> 566 depends on SMP
>> 567 default y
>> 568
>> 569 config NR_CPUS
>> 570 int "Maximum number of CPUs (2-32)"
>> 571 range 2 32
>> 572 depends on SMP
>> 573 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 574 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
683 help 575 help
684 Say Y to support efficient handling !! 576 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 577 with working support have a maximum of 4 CPUs.
>> 578
>> 579 config ARCH_DISCONTIGMEM_ENABLE
>> 580 bool "Discontiguous Memory Support"
>> 581 help
>> 582 Say Y to support efficient handling of discontiguous physical memory,
685 for architectures which are either N 583 for architectures which are either NUMA (Non-Uniform Memory Access)
686 or have huge holes in the physical a 584 or have huge holes in the physical address space for other reasons.
687 See <file:Documentation/mm/numa.rst> !! 585 See <file:Documentation/vm/numa> for more.
688 586
689 config ARCH_MEMORY_PROBE !! 587 source "mm/Kconfig"
690 def_bool y <<
691 depends on MEMORY_HOTPLUG <<
692 588
693 config MMU !! 589 config NUMA
694 bool !! 590 bool "NUMA Support (EXPERIMENTAL)"
695 default y !! 591 depends on DISCONTIGMEM && BROKEN
>> 592 help
>> 593 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 594 Access). This option is for configuring high-end multiprocessor
>> 595 server machines. If in doubt, say N.
>> 596
>> 597 config ALPHA_WTINT
>> 598 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 599 default y if ALPHA_QEMU
>> 600 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 601 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 602 default y if SMP
>> 603 ---help---
>> 604 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 605 to sleep until the next interrupt. This may reduce the power
>> 606 consumed, and the heat produced by the computer. However, it has
>> 607 the side effect of making the cycle counter unreliable as a timing
>> 608 device across the sleep.
>> 609
>> 610 For emulation under QEMU, definitely say Y here, as we have other
>> 611 mechanisms for measuring time than the cycle counter.
696 612
697 config ARCH_MMAP_RND_BITS_MIN !! 613 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
698 default 12 !! 614 MILO, sleep mode is not supported so you might as well say N here.
699 615
700 config ARCH_MMAP_RND_BITS_MAX !! 616 For SMP systems we cannot use the cycle counter for timing anyway,
701 default 18 !! 617 so you might as well say Y here.
702 618
703 config ARCH_SUPPORTS_UPROBES !! 619 If unsure, say N.
704 def_bool y !! 620
>> 621 config NODES_SHIFT
>> 622 int
>> 623 default "7"
>> 624 depends on NEED_MULTIPLE_NODES
705 625
706 config KASAN_SHADOW_OFFSET !! 626 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
707 hex !! 627 config ALPHA_LARGE_VMALLOC
708 default 0x0 !! 628 bool
709 depends on KASAN !! 629 ---help---
>> 630 Process creation and other aspects of virtual memory management can
>> 631 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 632 allocations. This equates to about 8GB.
>> 633
>> 634 Under normal circumstances, this is so far and above what is needed
>> 635 as to be laughable. However, there are certain applications (such
>> 636 as benchmark-grade in-kernel web serving) that can make use of as
>> 637 much vmalloc space as is available.
>> 638
>> 639 Say N unless you know you need gobs and gobs of vmalloc space.
>> 640
>> 641 config VERBOSE_MCHECK
>> 642 bool "Verbose Machine Checks"
>> 643
>> 644 config VERBOSE_MCHECK_ON
>> 645 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 646 depends on VERBOSE_MCHECK
>> 647 default 1
>> 648 ---help---
>> 649 This option allows the default printing mode to be set, and then
>> 650 possibly overridden by a boot command argument.
>> 651
>> 652 For example, if one wanted the option of printing verbose
>> 653 machine checks, but wanted the default to be as if verbose
>> 654 machine check printing was turned off, then one would choose
>> 655 the printing mode to be 0. Then, upon reboot, one could add
>> 656 the boot command line "verbose_mcheck=1" to get the normal
>> 657 verbose machine check printing, or "verbose_mcheck=2" to get
>> 658 the maximum information available.
710 659
711 menu "Power management options" !! 660 Take the default (1) unless you want more control or more info.
712 661
713 config ARCH_SUSPEND_POSSIBLE !! 662 choice
714 def_bool y !! 663 prompt "Timer interrupt frequency (HZ)?"
>> 664 default HZ_128 if ALPHA_QEMU
>> 665 default HZ_1200 if ALPHA_RAWHIDE
>> 666 default HZ_1024
>> 667 ---help---
>> 668 The frequency at which timer interrupts occur. A high frequency
>> 669 minimizes latency, whereas a low frequency minimizes overhead of
>> 670 process accounting. The later effect is especially significant
>> 671 when being run under QEMU.
>> 672
>> 673 Note that some Alpha hardware cannot change the interrupt frequency
>> 674 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 675
>> 676 config HZ_32
>> 677 bool "32 Hz"
>> 678 config HZ_64
>> 679 bool "64 Hz"
>> 680 config HZ_128
>> 681 bool "128 Hz"
>> 682 config HZ_256
>> 683 bool "256 Hz"
>> 684 config HZ_1024
>> 685 bool "1024 Hz"
>> 686 config HZ_1200
>> 687 bool "1200 Hz"
>> 688 endchoice
715 689
716 config ARCH_HIBERNATION_POSSIBLE !! 690 config HZ
717 def_bool y !! 691 int
>> 692 default 32 if HZ_32
>> 693 default 64 if HZ_64
>> 694 default 128 if HZ_128
>> 695 default 256 if HZ_256
>> 696 default 1200 if HZ_1200
>> 697 default 1024
>> 698
>> 699 source "drivers/pci/Kconfig"
>> 700 source "drivers/eisa/Kconfig"
>> 701
>> 702 source "drivers/pcmcia/Kconfig"
>> 703
>> 704 config SRM_ENV
>> 705 tristate "SRM environment through procfs"
>> 706 depends on PROC_FS
>> 707 ---help---
>> 708 If you enable this option, a subdirectory inside /proc called
>> 709 /proc/srm_environment will give you access to the all important
>> 710 SRM environment variables (those which have a name) and also
>> 711 to all others (by their internal number).
>> 712
>> 713 SRM is something like a BIOS for Alpha machines. There are some
>> 714 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 715 support (hey, that's not SRM!).
>> 716
>> 717 Despite the fact that this driver doesn't work on all Alphas (but
>> 718 only on those which have SRM as their firmware), it's save to
>> 719 build it even if your particular machine doesn't know about SRM
>> 720 (or if you intend to compile a generic kernel). It will simply
>> 721 not create those subdirectory in /proc (and give you some warning,
>> 722 of course).
718 723
719 source "kernel/power/Kconfig" !! 724 This driver is also available as a module and will be called
720 source "drivers/acpi/Kconfig" !! 725 srm_env then.
721 source "drivers/cpufreq/Kconfig" !! 726
>> 727 source "fs/Kconfig.binfmt"
722 728
723 endmenu 729 endmenu
724 730
725 source "arch/loongarch/kvm/Kconfig" !! 731 source "net/Kconfig"
>> 732
>> 733 source "drivers/Kconfig"
>> 734
>> 735 source "fs/Kconfig"
>> 736
>> 737 source "arch/alpha/Kconfig.debug"
>> 738
>> 739 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 740 # but we also need it if VGA_HOSE is set
>> 741 config DUMMY_CONSOLE
>> 742 bool
>> 743 depends on VGA_HOSE
>> 744 default y
>> 745
>> 746 source "security/Kconfig"
>> 747
>> 748 source "crypto/Kconfig"
>> 749
>> 750 source "lib/Kconfig"
>> 751
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