1 # SPDX-License-Identifier: GPL-2.0
2 # Put here option for CPU selection and depend
3 choice
4 prompt "Processor family"
5 default M686 if X86_32
6 default GENERIC_CPU if X86_64
7 help
8 This is the processor type of your C
9 used for optimizing purposes. In ord
10 that can run on all supported x86 CP
11 optimally fast), you can specify "48
12
13 Note that the 386 is no longer suppo
14 AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX,
15 UMC 486SX-S and the NexGen Nx586.
16
17 The kernel will not necessarily run
18 the one you have chosen, e.g. a Pent
19 a PPro, but not necessarily on a i48
20
21 Here are the settings recommended fo
22 - "486" for the AMD/Cyrix/IBM/Intel
23 SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5
24 - "586" for generic Pentium CPUs lac
25 (time stamp counter) register.
26 - "Pentium-Classic" for the Intel Pe
27 - "Pentium-MMX" for the Intel Pentiu
28 - "Pentium-Pro" for the Intel Pentiu
29 - "Pentium-II" for the Intel Pentium
30 - "Pentium-III" for the Intel Pentiu
31 - "Pentium-4" for the Intel Pentium
32 - "K6" for the AMD K6, K6-II and K6-
33 - "Athlon" for the AMD K7 family (At
34 - "Opteron/Athlon64/Hammer/K8" for a
35 - "Crusoe" for the Transmeta Crusoe
36 - "Efficeon" for the Transmeta Effic
37 - "Winchip-C6" for original IDT Winc
38 - "Winchip-2" for IDT Winchips with
39 - "AMD Elan" for the 32-bit AMD Elan
40 - "GeodeGX1" for Geode GX1 (Cyrix Me
41 - "Geode GX/LX" For AMD Geode GX and
42 - "CyrixIII/VIA C3" for VIA Cyrix II
43 - "VIA C3-2" for VIA C3-2 "Nehemiah"
44 - "VIA C7" for VIA C7.
45 - "Intel P4" for the Pentium 4/Netbu
46 - "Core 2/newer Xeon" for all core2
47 - "Intel Atom" for the Atom-microarc
48 - "Generic-x86-64" for a kernel whic
49
50 See each option's help text for addi
51 what to do, choose "486".
52
53 config M486SX
54 bool "486SX"
55 depends on X86_32
56 help
57 Select this for an 486-class CPU wit
58 AMD/Cyrix/IBM/Intel SL/SLC/SLC2/SLC3
59
60 config M486
61 bool "486DX"
62 depends on X86_32
63 help
64 Select this for an 486-class CPU suc
65 486DX/DX2/DX4 and UMC U5D.
66
67 config M586
68 bool "586/K5/5x86/6x86/6x86MX"
69 depends on X86_32
70 help
71 Select this for an 586 or 686 series
72 the Cyrix 5x86, 6x86 and 6x86MX. Th
73 assume the RDTSC (Read Time Stamp Co
74
75 config M586TSC
76 bool "Pentium-Classic"
77 depends on X86_32
78 help
79 Select this for a Pentium Classic pr
80 Time Stamp Counter) instruction for
81
82 config M586MMX
83 bool "Pentium-MMX"
84 depends on X86_32
85 help
86 Select this for a Pentium with the M
87 extended instructions.
88
89 config M686
90 bool "Pentium-Pro"
91 depends on X86_32
92 help
93 Select this for Intel Pentium Pro ch
94 Pentium Pro extended instructions, a
95 against the f00f bug found in earlie
96
97 config MPENTIUMII
98 bool "Pentium-II/Celeron(pre-Coppermin
99 depends on X86_32
100 help
101 Select this for Intel chips based on
102 pre-Coppermine Celeron core. This o
103 copy optimization, compiles the kern
104 tailored for the chip, and applies a
105 optimizations.
106
107 config MPENTIUMIII
108 bool "Pentium-III/Celeron(Coppermine)/
109 depends on X86_32
110 help
111 Select this for Intel chips based on
112 Celeron-Coppermine core. This optio
113 extended prefetch instructions in ad
114 extensions.
115
116 config MPENTIUMM
117 bool "Pentium M"
118 depends on X86_32
119 help
120 Select this for Intel Pentium M (not
121 notebook chips.
122
123 config MPENTIUM4
124 bool "Pentium-4/Celeron(P4-based)/Pent
125 depends on X86_32
126 help
127 Select this for Intel Pentium 4 chip
128 Pentium 4, Pentium D, P4-based Celer
129 Pentium-4 M (not Pentium M) chips.
130 flags optimized for the chip, uses t
131 applies any applicable optimizations
132
133 CPUIDs: F[0-6][1-A] (in /proc/cpuinf
134
135 Select this for:
136 Pentiums (Pentium 4, Pentium D, Ce
137 -Willamette
138 -Northwood
139 -Mobile Pentium 4
140 -Mobile Pentium 4 M
141 -Extreme Edition (Gallatin)
142 -Prescott
143 -Prescott 2M
144 -Cedar Mill
145 -Presler
146 -Smithfiled
147 Xeons (Intel Xeon, Xeon MP, Xeon L
148 -Foster
149 -Prestonia
150 -Gallatin
151 -Nocona
152 -Irwindale
153 -Cranford
154 -Potomac
155 -Paxville
156 -Dempsey
157
158
159 config MK6
160 bool "K6/K6-II/K6-III"
161 depends on X86_32
162 help
163 Select this for an AMD K6-family pro
164 some extended instructions, and pass
165 flags to GCC.
166
167 config MK7
168 bool "Athlon/Duron/K7"
169 depends on X86_32
170 help
171 Select this for an AMD Athlon K7-fam
172 some extended instructions, and pass
173 flags to GCC.
174
175 config MK8
176 bool "Opteron/Athlon64/Hammer/K8"
177 help
178 Select this for an AMD Opteron or At
179 Enables use of some extended instruc
180 optimization flags to GCC.
181
182 config MCRUSOE
183 bool "Crusoe"
184 depends on X86_32
185 help
186 Select this for a Transmeta Crusoe p
187 like a 586 with TSC, and sets some G
188 Pentium Pro with no alignment requir
189
190 config MEFFICEON
191 bool "Efficeon"
192 depends on X86_32
193 help
194 Select this for a Transmeta Efficeon
195
196 config MWINCHIPC6
197 bool "Winchip-C6"
198 depends on X86_32
199 help
200 Select this for an IDT Winchip C6 ch
201 treat this chip as a 586TSC with som
202 and alignment requirements.
203
204 config MWINCHIP3D
205 bool "Winchip-2/Winchip-2A/Winchip-3"
206 depends on X86_32
207 help
208 Select this for an IDT Winchip-2, 2A
209 treat this chip as a 586TSC with som
210 and alignment requirements. Also en
211 stores for this CPU, which can incre
212 operations.
213
214 config MELAN
215 bool "AMD Elan"
216 depends on X86_32
217 help
218 Select this for an AMD Elan processo
219
220 Do not use this option for K6/Athlon
221
222 config MGEODEGX1
223 bool "GeodeGX1"
224 depends on X86_32
225 help
226 Select this for a Geode GX1 (Cyrix M
227
228 config MGEODE_LX
229 bool "Geode GX/LX"
230 depends on X86_32
231 help
232 Select this for AMD Geode GX and LX
233
234 config MCYRIXIII
235 bool "CyrixIII/VIA-C3"
236 depends on X86_32
237 help
238 Select this for a Cyrix III or C3 ch
239 treat this chip as a generic 586. Wh
240 it lacks the cmov extension which gc
241 generating 686 code.
242 Note that Nehemiah (Model 9) and abo
243 kernel due to them lacking the 3DNow
244 incarnations of the CPU.
245
246 config MVIAC3_2
247 bool "VIA C3-2 (Nehemiah)"
248 depends on X86_32
249 help
250 Select this for a VIA C3 "Nehemiah".
251 of SSE and tells gcc to treat the CP
252 Note, this kernel will not boot on o
253
254 config MVIAC7
255 bool "VIA C7"
256 depends on X86_32
257 help
258 Select this for a VIA C7. Selecting
259 shift and tells gcc to treat the CPU
260
261 config MPSC
262 bool "Intel P4 / older Netburst based
263 depends on X86_64
264 help
265 Optimize for Intel Pentium 4, Pentiu
266 Xeon CPUs with Intel 64bit which is
267 Note that the latest Xeons (Xeon 51x
268 Netburst core and shouldn't use this
269 using the cpu family field
270 in /proc/cpuinfo. Family 15 is an ol
271
272 config MCORE2
273 bool "Core 2/newer Xeon"
274 help
275
276 Select this for Intel Core 2 and new
277 53xx) CPUs. You can distinguish newe
278 family in /proc/cpuinfo. Newer ones
279 (not a typo)
280
281 config MATOM
282 bool "Intel Atom"
283 help
284
285 Select this for the Intel Atom platf
286 in-order pipelining architecture and
287 accordingly optimized code. Use a re
288 support in order to fully benefit fr
289
290 config GENERIC_CPU
291 bool "Generic-x86-64"
292 depends on X86_64
293 help
294 Generic x86-64 CPU.
295 Run equally well on all x86-64 CPUs.
296
297 endchoice
298
299 config X86_GENERIC
300 bool "Generic x86 support"
301 depends on X86_32
302 help
303 Instead of just including optimizati
304 x86 variant (e.g. PII, Crusoe or Ath
305 generic optimizations as well. This
306 perform better on x86 CPUs other tha
307
308 This is really intended for distribu
309 generic optimizations.
310
311 #
312 # Define implied options from the CPU selectio
313 config X86_INTERNODE_CACHE_SHIFT
314 int
315 default "12" if X86_VSMP
316 default X86_L1_CACHE_SHIFT
317
318 config X86_L1_CACHE_SHIFT
319 int
320 default "7" if MPENTIUM4 || MPSC
321 default "6" if MK7 || MK8 || MPENTIUMM
322 default "4" if MELAN || M486SX || M486
323 default "5" if MWINCHIP3D || MWINCHIPC
324
325 config X86_F00F_BUG
326 def_bool y
327 depends on M586MMX || M586TSC || M586
328
329 config X86_INVD_BUG
330 def_bool y
331 depends on M486SX || M486
332
333 config X86_ALIGNMENT_16
334 def_bool y
335 depends on MWINCHIP3D || MWINCHIPC6 ||
336
337 config X86_INTEL_USERCOPY
338 def_bool y
339 depends on MPENTIUM4 || MPENTIUMM || M
340
341 config X86_USE_PPRO_CHECKSUM
342 def_bool y
343 depends on MWINCHIP3D || MWINCHIPC6 ||
344
345 #
346 # P6_NOPs are a relatively minor optimization
347 # 6 processor, except that it is broken on cer
348 # Furthermore, AMD chips prefer a totally diff
349 # (which work on all CPUs). In addition, it l
350 # does not understand them.
351 #
352 # As a result, disallow these if we're not com
353 # NOPs do work on all x86-64 capable chips); t
354 # the right-hand clause are the cores that ben
355 #
356 config X86_P6_NOP
357 def_bool y
358 depends on X86_64
359 depends on (MCORE2 || MPENTIUM4 || MPS
360
361 config X86_TSC
362 def_bool y
363 depends on (MWINCHIP3D || MCRUSOE || M
364
365 config X86_HAVE_PAE
366 def_bool y
367 depends on MCRUSOE || MEFFICEON || MCY
368
369 config X86_CMPXCHG64
370 def_bool y
371 depends on X86_HAVE_PAE || M586TSC ||
372
373 # this should be set for all -march=.. options
374 # generates cmov.
375 config X86_CMOV
376 def_bool y
377 depends on (MK8 || MK7 || MCORE2 || MP
378
379 config X86_MINIMUM_CPU_FAMILY
380 int
381 default "64" if X86_64
382 default "6" if X86_32 && (MPENTIUM4 ||
383 default "5" if X86_32 && X86_CMPXCHG64
384 default "4"
385
386 config X86_DEBUGCTLMSR
387 def_bool y
388 depends on !(MK6 || MWINCHIPC6 || MWIN
389
390 config IA32_FEAT_CTL
391 def_bool y
392 depends on CPU_SUP_INTEL || CPU_SUP_CE
393
394 config X86_VMX_FEATURE_NAMES
395 def_bool y
396 depends on IA32_FEAT_CTL
397
398 menuconfig PROCESSOR_SELECT
399 bool "Supported processor vendors" if
400 help
401 This lets you choose what x86 vendor
402 will include.
403
404 config CPU_SUP_INTEL
405 default y
406 bool "Support Intel processors" if PRO
407 help
408 This enables detection, tunings and
409
410 You need this enabled if you want yo
411 Intel CPU. Disabling this option on
412 makes the kernel a tiny bit smaller.
413 CPU might render the kernel unbootab
414
415 If unsure, say N.
416
417 config CPU_SUP_CYRIX_32
418 default y
419 bool "Support Cyrix processors" if PRO
420 depends on M486SX || M486 || M586 || M
421 help
422 This enables detection, tunings and
423
424 You need this enabled if you want yo
425 Cyrix CPU. Disabling this option on
426 makes the kernel a tiny bit smaller.
427 CPU might render the kernel unbootab
428
429 If unsure, say N.
430
431 config CPU_SUP_AMD
432 default y
433 bool "Support AMD processors" if PROCE
434 help
435 This enables detection, tunings and
436
437 You need this enabled if you want yo
438 AMD CPU. Disabling this option on ot
439 makes the kernel a tiny bit smaller.
440 CPU might render the kernel unbootab
441
442 If unsure, say N.
443
444 config CPU_SUP_HYGON
445 default y
446 bool "Support Hygon processors" if PRO
447 select CPU_SUP_AMD
448 help
449 This enables detection, tunings and
450
451 You need this enabled if you want yo
452 Hygon CPU. Disabling this option on
453 makes the kernel a tiny bit smaller.
454 CPU might render the kernel unbootab
455
456 If unsure, say N.
457
458 config CPU_SUP_CENTAUR
459 default y
460 bool "Support Centaur processors" if P
461 help
462 This enables detection, tunings and
463
464 You need this enabled if you want yo
465 Centaur CPU. Disabling this option o
466 makes the kernel a tiny bit smaller.
467 CPU might render the kernel unbootab
468
469 If unsure, say N.
470
471 config CPU_SUP_TRANSMETA_32
472 default y
473 bool "Support Transmeta processors" if
474 depends on !64BIT
475 help
476 This enables detection, tunings and
477
478 You need this enabled if you want yo
479 Transmeta CPU. Disabling this option
480 makes the kernel a tiny bit smaller.
481 CPU might render the kernel unbootab
482
483 If unsure, say N.
484
485 config CPU_SUP_UMC_32
486 default y
487 bool "Support UMC processors" if PROCE
488 depends on M486SX || M486 || (EXPERT &
489 help
490 This enables detection, tunings and
491
492 You need this enabled if you want yo
493 UMC CPU. Disabling this option on ot
494 makes the kernel a tiny bit smaller.
495 CPU might render the kernel unbootab
496
497 If unsure, say N.
498
499 config CPU_SUP_ZHAOXIN
500 default y
501 bool "Support Zhaoxin processors" if P
502 help
503 This enables detection, tunings and
504
505 You need this enabled if you want yo
506 Zhaoxin CPU. Disabling this option o
507 makes the kernel a tiny bit smaller.
508 CPU might render the kernel unbootab
509
510 If unsure, say N.
511
512 config CPU_SUP_VORTEX_32
513 default y
514 bool "Support Vortex processors" if PR
515 depends on X86_32
516 help
517 This enables detection, tunings and
518
519 You need this enabled if you want yo
520 Vortex CPU. Disabling this option on
521 makes the kernel a tiny bit smaller.
522
523 If unsure, say N.
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