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Diffstat (limited to 'arch/x86/Kconfig.cpu')
-rw-r--r-- | arch/x86/Kconfig.cpu | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu new file mode 100644 index 000000000000..0e2adadf5905 --- /dev/null +++ b/arch/x86/Kconfig.cpu | |||
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1 | # Put here option for CPU selection and depending optimization | ||
2 | if !X86_ELAN | ||
3 | |||
4 | choice | ||
5 | prompt "Processor family" | ||
6 | default M686 | ||
7 | |||
8 | config M386 | ||
9 | bool "386" | ||
10 | depends on !UML | ||
11 | ---help--- | ||
12 | This is the processor type of your CPU. This information is used for | ||
13 | optimizing purposes. In order to compile a kernel that can run on | ||
14 | all x86 CPU types (albeit not optimally fast), you can specify | ||
15 | "386" here. | ||
16 | |||
17 | The kernel will not necessarily run on earlier architectures than | ||
18 | the one you have chosen, e.g. a Pentium optimized kernel will run on | ||
19 | a PPro, but not necessarily on a i486. | ||
20 | |||
21 | Here are the settings recommended for greatest speed: | ||
22 | - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI | ||
23 | 486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels | ||
24 | will run on a 386 class machine. | ||
25 | - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or | ||
26 | SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S. | ||
27 | - "586" for generic Pentium CPUs lacking the TSC | ||
28 | (time stamp counter) register. | ||
29 | - "Pentium-Classic" for the Intel Pentium. | ||
30 | - "Pentium-MMX" for the Intel Pentium MMX. | ||
31 | - "Pentium-Pro" for the Intel Pentium Pro. | ||
32 | - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron. | ||
33 | - "Pentium-III" for the Intel Pentium III or Coppermine Celeron. | ||
34 | - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron. | ||
35 | - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D). | ||
36 | - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird). | ||
37 | - "Crusoe" for the Transmeta Crusoe series. | ||
38 | - "Efficeon" for the Transmeta Efficeon series. | ||
39 | - "Winchip-C6" for original IDT Winchip. | ||
40 | - "Winchip-2" for IDT Winchip 2. | ||
41 | - "Winchip-2A" for IDT Winchips with 3dNow! capabilities. | ||
42 | - "GeodeGX1" for Geode GX1 (Cyrix MediaGX). | ||
43 | - "Geode GX/LX" For AMD Geode GX and LX processors. | ||
44 | - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3. | ||
45 | - "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above). | ||
46 | - "VIA C7" for VIA C7. | ||
47 | |||
48 | If you don't know what to do, choose "386". | ||
49 | |||
50 | config M486 | ||
51 | bool "486" | ||
52 | help | ||
53 | Select this for a 486 series processor, either Intel or one of the | ||
54 | compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX, | ||
55 | DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or | ||
56 | U5S. | ||
57 | |||
58 | config M586 | ||
59 | bool "586/K5/5x86/6x86/6x86MX" | ||
60 | help | ||
61 | Select this for an 586 or 686 series processor such as the AMD K5, | ||
62 | the Cyrix 5x86, 6x86 and 6x86MX. This choice does not | ||
63 | assume the RDTSC (Read Time Stamp Counter) instruction. | ||
64 | |||
65 | config M586TSC | ||
66 | bool "Pentium-Classic" | ||
67 | help | ||
68 | Select this for a Pentium Classic processor with the RDTSC (Read | ||
69 | Time Stamp Counter) instruction for benchmarking. | ||
70 | |||
71 | config M586MMX | ||
72 | bool "Pentium-MMX" | ||
73 | help | ||
74 | Select this for a Pentium with the MMX graphics/multimedia | ||
75 | extended instructions. | ||
76 | |||
77 | config M686 | ||
78 | bool "Pentium-Pro" | ||
79 | help | ||
80 | Select this for Intel Pentium Pro chips. This enables the use of | ||
81 | Pentium Pro extended instructions, and disables the init-time guard | ||
82 | against the f00f bug found in earlier Pentiums. | ||
83 | |||
84 | config MPENTIUMII | ||
85 | bool "Pentium-II/Celeron(pre-Coppermine)" | ||
86 | help | ||
87 | Select this for Intel chips based on the Pentium-II and | ||
88 | pre-Coppermine Celeron core. This option enables an unaligned | ||
89 | copy optimization, compiles the kernel with optimization flags | ||
90 | tailored for the chip, and applies any applicable Pentium Pro | ||
91 | optimizations. | ||
92 | |||
93 | config MPENTIUMIII | ||
94 | bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon" | ||
95 | help | ||
96 | Select this for Intel chips based on the Pentium-III and | ||
97 | Celeron-Coppermine core. This option enables use of some | ||
98 | extended prefetch instructions in addition to the Pentium II | ||
99 | extensions. | ||
100 | |||
101 | config MPENTIUMM | ||
102 | bool "Pentium M" | ||
103 | help | ||
104 | Select this for Intel Pentium M (not Pentium-4 M) | ||
105 | notebook chips. | ||
106 | |||
107 | config MCORE2 | ||
108 | bool "Core 2/newer Xeon" | ||
109 | help | ||
110 | Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx) | ||
111 | CPUs. You can distinguish newer from older Xeons by the CPU family | ||
112 | in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo) | ||
113 | |||
114 | config MPENTIUM4 | ||
115 | bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon" | ||
116 | help | ||
117 | Select this for Intel Pentium 4 chips. This includes the | ||
118 | Pentium 4, Pentium D, P4-based Celeron and Xeon, and | ||
119 | Pentium-4 M (not Pentium M) chips. This option enables compile | ||
120 | flags optimized for the chip, uses the correct cache line size, and | ||
121 | applies any applicable optimizations. | ||
122 | |||
123 | CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 ) | ||
124 | |||
125 | Select this for: | ||
126 | Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename: | ||
127 | -Willamette | ||
128 | -Northwood | ||
129 | -Mobile Pentium 4 | ||
130 | -Mobile Pentium 4 M | ||
131 | -Extreme Edition (Gallatin) | ||
132 | -Prescott | ||
133 | -Prescott 2M | ||
134 | -Cedar Mill | ||
135 | -Presler | ||
136 | -Smithfiled | ||
137 | Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename: | ||
138 | -Foster | ||
139 | -Prestonia | ||
140 | -Gallatin | ||
141 | -Nocona | ||
142 | -Irwindale | ||
143 | -Cranford | ||
144 | -Potomac | ||
145 | -Paxville | ||
146 | -Dempsey | ||
147 | |||
148 | |||
149 | config MK6 | ||
150 | bool "K6/K6-II/K6-III" | ||
151 | help | ||
152 | Select this for an AMD K6-family processor. Enables use of | ||
153 | some extended instructions, and passes appropriate optimization | ||
154 | flags to GCC. | ||
155 | |||
156 | config MK7 | ||
157 | bool "Athlon/Duron/K7" | ||
158 | help | ||
159 | Select this for an AMD Athlon K7-family processor. Enables use of | ||
160 | some extended instructions, and passes appropriate optimization | ||
161 | flags to GCC. | ||
162 | |||
163 | config MK8 | ||
164 | bool "Opteron/Athlon64/Hammer/K8" | ||
165 | help | ||
166 | Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables | ||
167 | use of some extended instructions, and passes appropriate optimization | ||
168 | flags to GCC. | ||
169 | |||
170 | config MCRUSOE | ||
171 | bool "Crusoe" | ||
172 | help | ||
173 | Select this for a Transmeta Crusoe processor. Treats the processor | ||
174 | like a 586 with TSC, and sets some GCC optimization flags (like a | ||
175 | Pentium Pro with no alignment requirements). | ||
176 | |||
177 | config MEFFICEON | ||
178 | bool "Efficeon" | ||
179 | help | ||
180 | Select this for a Transmeta Efficeon processor. | ||
181 | |||
182 | config MWINCHIPC6 | ||
183 | bool "Winchip-C6" | ||
184 | help | ||
185 | Select this for an IDT Winchip C6 chip. Linux and GCC | ||
186 | treat this chip as a 586TSC with some extended instructions | ||
187 | and alignment requirements. | ||
188 | |||
189 | config MWINCHIP2 | ||
190 | bool "Winchip-2" | ||
191 | help | ||
192 | Select this for an IDT Winchip-2. Linux and GCC | ||
193 | treat this chip as a 586TSC with some extended instructions | ||
194 | and alignment requirements. | ||
195 | |||
196 | config MWINCHIP3D | ||
197 | bool "Winchip-2A/Winchip-3" | ||
198 | help | ||
199 | Select this for an IDT Winchip-2A or 3. Linux and GCC | ||
200 | treat this chip as a 586TSC with some extended instructions | ||
201 | and alignment requirements. Also enable out of order memory | ||
202 | stores for this CPU, which can increase performance of some | ||
203 | operations. | ||
204 | |||
205 | config MGEODEGX1 | ||
206 | bool "GeodeGX1" | ||
207 | help | ||
208 | Select this for a Geode GX1 (Cyrix MediaGX) chip. | ||
209 | |||
210 | config MGEODE_LX | ||
211 | bool "Geode GX/LX" | ||
212 | help | ||
213 | Select this for AMD Geode GX and LX processors. | ||
214 | |||
215 | config MCYRIXIII | ||
216 | bool "CyrixIII/VIA-C3" | ||
217 | help | ||
218 | Select this for a Cyrix III or C3 chip. Presently Linux and GCC | ||
219 | treat this chip as a generic 586. Whilst the CPU is 686 class, | ||
220 | it lacks the cmov extension which gcc assumes is present when | ||
221 | generating 686 code. | ||
222 | Note that Nehemiah (Model 9) and above will not boot with this | ||
223 | kernel due to them lacking the 3DNow! instructions used in earlier | ||
224 | incarnations of the CPU. | ||
225 | |||
226 | config MVIAC3_2 | ||
227 | bool "VIA C3-2 (Nehemiah)" | ||
228 | help | ||
229 | Select this for a VIA C3 "Nehemiah". Selecting this enables usage | ||
230 | of SSE and tells gcc to treat the CPU as a 686. | ||
231 | Note, this kernel will not boot on older (pre model 9) C3s. | ||
232 | |||
233 | config MVIAC7 | ||
234 | bool "VIA C7" | ||
235 | help | ||
236 | Select this for a VIA C7. Selecting this uses the correct cache | ||
237 | shift and tells gcc to treat the CPU as a 686. | ||
238 | |||
239 | endchoice | ||
240 | |||
241 | config X86_GENERIC | ||
242 | bool "Generic x86 support" | ||
243 | help | ||
244 | Instead of just including optimizations for the selected | ||
245 | x86 variant (e.g. PII, Crusoe or Athlon), include some more | ||
246 | generic optimizations as well. This will make the kernel | ||
247 | perform better on x86 CPUs other than that selected. | ||
248 | |||
249 | This is really intended for distributors who need more | ||
250 | generic optimizations. | ||
251 | |||
252 | endif | ||
253 | |||
254 | # | ||
255 | # Define implied options from the CPU selection here | ||
256 | # | ||
257 | config X86_CMPXCHG | ||
258 | bool | ||
259 | depends on !M386 | ||
260 | default y | ||
261 | |||
262 | config X86_L1_CACHE_SHIFT | ||
263 | int | ||
264 | default "7" if MPENTIUM4 || X86_GENERIC | ||
265 | default "4" if X86_ELAN || M486 || M386 || MGEODEGX1 | ||
266 | default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX | ||
267 | default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7 | ||
268 | |||
269 | config X86_XADD | ||
270 | bool | ||
271 | depends on !M386 | ||
272 | default y | ||
273 | |||
274 | config RWSEM_GENERIC_SPINLOCK | ||
275 | bool | ||
276 | depends on !X86_XADD | ||
277 | default y | ||
278 | |||
279 | config RWSEM_XCHGADD_ALGORITHM | ||
280 | bool | ||
281 | depends on X86_XADD | ||
282 | default y | ||
283 | |||
284 | config ARCH_HAS_ILOG2_U32 | ||
285 | bool | ||
286 | default n | ||
287 | |||
288 | config ARCH_HAS_ILOG2_U64 | ||
289 | bool | ||
290 | default n | ||
291 | |||
292 | config GENERIC_CALIBRATE_DELAY | ||
293 | bool | ||
294 | default y | ||
295 | |||
296 | config X86_PPRO_FENCE | ||
297 | bool | ||
298 | depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1 | ||
299 | default y | ||
300 | |||
301 | config X86_F00F_BUG | ||
302 | bool | ||
303 | depends on M586MMX || M586TSC || M586 || M486 || M386 | ||
304 | default y | ||
305 | |||
306 | config X86_WP_WORKS_OK | ||
307 | bool | ||
308 | depends on !M386 | ||
309 | default y | ||
310 | |||
311 | config X86_INVLPG | ||
312 | bool | ||
313 | depends on !M386 | ||
314 | default y | ||
315 | |||
316 | config X86_BSWAP | ||
317 | bool | ||
318 | depends on !M386 | ||
319 | default y | ||
320 | |||
321 | config X86_POPAD_OK | ||
322 | bool | ||
323 | depends on !M386 | ||
324 | default y | ||
325 | |||
326 | config X86_ALIGNMENT_16 | ||
327 | bool | ||
328 | depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 | ||
329 | default y | ||
330 | |||
331 | config X86_GOOD_APIC | ||
332 | bool | ||
333 | depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 | ||
334 | default y | ||
335 | |||
336 | config X86_INTEL_USERCOPY | ||
337 | bool | ||
338 | depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 | ||
339 | default y | ||
340 | |||
341 | config X86_USE_PPRO_CHECKSUM | ||
342 | bool | ||
343 | depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2 | ||
344 | default y | ||
345 | |||
346 | config X86_USE_3DNOW | ||
347 | bool | ||
348 | depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML | ||
349 | default y | ||
350 | |||
351 | config X86_OOSTORE | ||
352 | bool | ||
353 | depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR | ||
354 | default y | ||
355 | |||
356 | config X86_TSC | ||
357 | bool | ||
358 | depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ | ||
359 | default y | ||
360 | |||
361 | # this should be set for all -march=.. options where the compiler | ||
362 | # generates cmov. | ||
363 | config X86_CMOV | ||
364 | bool | ||
365 | depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7) | ||
366 | default y | ||
367 | |||
368 | config X86_MINIMUM_CPU_FAMILY | ||
369 | int | ||
370 | default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK | ||
371 | default "3" | ||
372 | |||