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96d55b88 PBG |
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" | |
1b4ad242 | 10 | depends on !UML |
96d55b88 PBG |
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). | |
f90b8116 | 43 | - "Geode GX/LX" For AMD Geode GX and LX processors. |
96d55b88 | 44 | - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3. |
48a1204c | 45 | - "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above). |
0949be35 | 46 | - "VIA C7" for VIA C7. |
96d55b88 PBG |
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 | ||
c55d92d1 AK |
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 distingush newer from older Xeons by the CPU family | |
112 | in /proc/cpuinfo. Newer ones have 6. | |
113 | ||
96d55b88 | 114 | config MPENTIUM4 |
c55d92d1 | 115 | bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon" |
96d55b88 PBG |
116 | help |
117 | Select this for Intel Pentium 4 chips. This includes the | |
118 | Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M | |
119 | (not Pentium M) chips. This option enables compile flags | |
120 | optimized for the chip, uses the correct cache shift, and | |
121 | applies any applicable Pentium III optimizations. | |
122 | ||
123 | config MK6 | |
124 | bool "K6/K6-II/K6-III" | |
125 | help | |
126 | Select this for an AMD K6-family processor. Enables use of | |
127 | some extended instructions, and passes appropriate optimization | |
128 | flags to GCC. | |
129 | ||
130 | config MK7 | |
131 | bool "Athlon/Duron/K7" | |
132 | help | |
133 | Select this for an AMD Athlon K7-family processor. Enables use of | |
134 | some extended instructions, and passes appropriate optimization | |
135 | flags to GCC. | |
136 | ||
137 | config MK8 | |
138 | bool "Opteron/Athlon64/Hammer/K8" | |
139 | help | |
140 | Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables | |
141 | use of some extended instructions, and passes appropriate optimization | |
142 | flags to GCC. | |
143 | ||
144 | config MCRUSOE | |
145 | bool "Crusoe" | |
146 | help | |
147 | Select this for a Transmeta Crusoe processor. Treats the processor | |
148 | like a 586 with TSC, and sets some GCC optimization flags (like a | |
149 | Pentium Pro with no alignment requirements). | |
150 | ||
151 | config MEFFICEON | |
152 | bool "Efficeon" | |
153 | help | |
154 | Select this for a Transmeta Efficeon processor. | |
155 | ||
156 | config MWINCHIPC6 | |
157 | bool "Winchip-C6" | |
158 | help | |
159 | Select this for an IDT Winchip C6 chip. Linux and GCC | |
160 | treat this chip as a 586TSC with some extended instructions | |
161 | and alignment requirements. | |
162 | ||
163 | config MWINCHIP2 | |
164 | bool "Winchip-2" | |
165 | help | |
166 | Select this for an IDT Winchip-2. Linux and GCC | |
167 | treat this chip as a 586TSC with some extended instructions | |
168 | and alignment requirements. | |
169 | ||
170 | config MWINCHIP3D | |
171 | bool "Winchip-2A/Winchip-3" | |
172 | help | |
173 | Select this for an IDT Winchip-2A or 3. Linux and GCC | |
174 | treat this chip as a 586TSC with some extended instructions | |
175 | and alignment reqirements. Also enable out of order memory | |
176 | stores for this CPU, which can increase performance of some | |
177 | operations. | |
178 | ||
179 | config MGEODEGX1 | |
180 | bool "GeodeGX1" | |
181 | help | |
182 | Select this for a Geode GX1 (Cyrix MediaGX) chip. | |
183 | ||
f90b8116 JC |
184 | config MGEODE_LX |
185 | bool "Geode GX/LX" | |
186 | help | |
187 | Select this for AMD Geode GX and LX processors. | |
188 | ||
96d55b88 PBG |
189 | config MCYRIXIII |
190 | bool "CyrixIII/VIA-C3" | |
191 | help | |
192 | Select this for a Cyrix III or C3 chip. Presently Linux and GCC | |
193 | treat this chip as a generic 586. Whilst the CPU is 686 class, | |
194 | it lacks the cmov extension which gcc assumes is present when | |
195 | generating 686 code. | |
196 | Note that Nehemiah (Model 9) and above will not boot with this | |
197 | kernel due to them lacking the 3DNow! instructions used in earlier | |
198 | incarnations of the CPU. | |
199 | ||
200 | config MVIAC3_2 | |
201 | bool "VIA C3-2 (Nehemiah)" | |
202 | help | |
203 | Select this for a VIA C3 "Nehemiah". Selecting this enables usage | |
204 | of SSE and tells gcc to treat the CPU as a 686. | |
205 | Note, this kernel will not boot on older (pre model 9) C3s. | |
206 | ||
0949be35 SA |
207 | config MVIAC7 |
208 | bool "VIA C7" | |
209 | help | |
210 | Select this for a VIA C7. Selecting this uses the correct cache | |
211 | shift and tells gcc to treat the CPU as a 686. | |
212 | ||
96d55b88 PBG |
213 | endchoice |
214 | ||
215 | config X86_GENERIC | |
216 | bool "Generic x86 support" | |
217 | help | |
218 | Instead of just including optimizations for the selected | |
219 | x86 variant (e.g. PII, Crusoe or Athlon), include some more | |
220 | generic optimizations as well. This will make the kernel | |
221 | perform better on x86 CPUs other than that selected. | |
222 | ||
223 | This is really intended for distributors who need more | |
224 | generic optimizations. | |
225 | ||
226 | endif | |
227 | ||
228 | # | |
229 | # Define implied options from the CPU selection here | |
230 | # | |
231 | config X86_CMPXCHG | |
232 | bool | |
233 | depends on !M386 | |
234 | default y | |
235 | ||
96d55b88 PBG |
236 | config X86_L1_CACHE_SHIFT |
237 | int | |
238 | default "7" if MPENTIUM4 || X86_GENERIC | |
f90b8116 JC |
239 | default "4" if X86_ELAN || M486 || M386 || MGEODEGX1 |
240 | default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX | |
0949be35 | 241 | default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7 |
96d55b88 | 242 | |
c7f81c94 AK |
243 | config X86_XADD |
244 | bool | |
245 | depends on !M386 | |
246 | default y | |
247 | ||
96d55b88 PBG |
248 | config RWSEM_GENERIC_SPINLOCK |
249 | bool | |
c7f81c94 | 250 | depends on !X86_XADD |
96d55b88 PBG |
251 | default y |
252 | ||
253 | config RWSEM_XCHGADD_ALGORITHM | |
254 | bool | |
c7f81c94 | 255 | depends on X86_XADD |
96d55b88 PBG |
256 | default y |
257 | ||
f0d1b0b3 DH |
258 | config ARCH_HAS_ILOG2_U32 |
259 | bool | |
260 | default n | |
261 | ||
262 | config ARCH_HAS_ILOG2_U64 | |
263 | bool | |
264 | default n | |
265 | ||
96d55b88 PBG |
266 | config GENERIC_CALIBRATE_DELAY |
267 | bool | |
268 | default y | |
269 | ||
270 | config X86_PPRO_FENCE | |
271 | bool | |
272 | depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1 | |
273 | default y | |
274 | ||
275 | config X86_F00F_BUG | |
276 | bool | |
277 | depends on M586MMX || M586TSC || M586 || M486 || M386 | |
278 | default y | |
279 | ||
280 | config X86_WP_WORKS_OK | |
281 | bool | |
282 | depends on !M386 | |
283 | default y | |
284 | ||
285 | config X86_INVLPG | |
286 | bool | |
287 | depends on !M386 | |
288 | default y | |
289 | ||
290 | config X86_BSWAP | |
291 | bool | |
292 | depends on !M386 | |
293 | default y | |
294 | ||
295 | config X86_POPAD_OK | |
296 | bool | |
297 | depends on !M386 | |
298 | default y | |
299 | ||
300 | config X86_CMPXCHG64 | |
301 | bool | |
302 | depends on !M386 && !M486 | |
303 | default y | |
304 | ||
305 | config X86_ALIGNMENT_16 | |
306 | bool | |
307 | depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 | |
308 | default y | |
309 | ||
310 | config X86_GOOD_APIC | |
311 | bool | |
0949be35 | 312 | depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 |
96d55b88 PBG |
313 | default y |
314 | ||
315 | config X86_INTEL_USERCOPY | |
316 | bool | |
c55d92d1 | 317 | depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 |
96d55b88 PBG |
318 | default y |
319 | ||
320 | config X86_USE_PPRO_CHECKSUM | |
321 | bool | |
c55d92d1 | 322 | depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2 |
96d55b88 PBG |
323 | default y |
324 | ||
325 | config X86_USE_3DNOW | |
326 | bool | |
1b4ad242 | 327 | depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML |
96d55b88 PBG |
328 | default y |
329 | ||
330 | config X86_OOSTORE | |
331 | bool | |
332 | depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR | |
333 | default y | |
334 | ||
335 | config X86_TSC | |
336 | bool | |
0949be35 | 337 | 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 |
96d55b88 | 338 | default y |
c7f81c94 AK |
339 | |
340 | # this should be set for all -march=.. options where the compiler | |
341 | # generates cmov. | |
342 | config X86_CMOV | |
343 | bool | |
344 | depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7) | |
345 | default y | |
346 | ||
347 | config X86_MINIMUM_CPU_MODEL | |
348 | int | |
349 | default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP | |
350 | default "0" | |
351 |