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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" | |
10 | ---help--- | |
11 | This is the processor type of your CPU. This information is used for | |
12 | optimizing purposes. In order to compile a kernel that can run on | |
13 | all x86 CPU types (albeit not optimally fast), you can specify | |
14 | "386" here. | |
15 | ||
16 | The kernel will not necessarily run on earlier architectures than | |
17 | the one you have chosen, e.g. a Pentium optimized kernel will run on | |
18 | a PPro, but not necessarily on a i486. | |
19 | ||
20 | Here are the settings recommended for greatest speed: | |
21 | - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI | |
22 | 486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels | |
23 | will run on a 386 class machine. | |
24 | - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or | |
25 | SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S. | |
26 | - "586" for generic Pentium CPUs lacking the TSC | |
27 | (time stamp counter) register. | |
28 | - "Pentium-Classic" for the Intel Pentium. | |
29 | - "Pentium-MMX" for the Intel Pentium MMX. | |
30 | - "Pentium-Pro" for the Intel Pentium Pro. | |
31 | - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron. | |
32 | - "Pentium-III" for the Intel Pentium III or Coppermine Celeron. | |
33 | - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron. | |
34 | - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D). | |
35 | - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird). | |
36 | - "Crusoe" for the Transmeta Crusoe series. | |
37 | - "Efficeon" for the Transmeta Efficeon series. | |
38 | - "Winchip-C6" for original IDT Winchip. | |
39 | - "Winchip-2" for IDT Winchip 2. | |
40 | - "Winchip-2A" for IDT Winchips with 3dNow! capabilities. | |
41 | - "GeodeGX1" for Geode GX1 (Cyrix MediaGX). | |
42 | - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3. | |
43 | - "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above). | |
44 | ||
45 | If you don't know what to do, choose "386". | |
46 | ||
47 | config M486 | |
48 | bool "486" | |
49 | help | |
50 | Select this for a 486 series processor, either Intel or one of the | |
51 | compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX, | |
52 | DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or | |
53 | U5S. | |
54 | ||
55 | config M586 | |
56 | bool "586/K5/5x86/6x86/6x86MX" | |
57 | help | |
58 | Select this for an 586 or 686 series processor such as the AMD K5, | |
59 | the Cyrix 5x86, 6x86 and 6x86MX. This choice does not | |
60 | assume the RDTSC (Read Time Stamp Counter) instruction. | |
61 | ||
62 | config M586TSC | |
63 | bool "Pentium-Classic" | |
64 | help | |
65 | Select this for a Pentium Classic processor with the RDTSC (Read | |
66 | Time Stamp Counter) instruction for benchmarking. | |
67 | ||
68 | config M586MMX | |
69 | bool "Pentium-MMX" | |
70 | help | |
71 | Select this for a Pentium with the MMX graphics/multimedia | |
72 | extended instructions. | |
73 | ||
74 | config M686 | |
75 | bool "Pentium-Pro" | |
76 | help | |
77 | Select this for Intel Pentium Pro chips. This enables the use of | |
78 | Pentium Pro extended instructions, and disables the init-time guard | |
79 | against the f00f bug found in earlier Pentiums. | |
80 | ||
81 | config MPENTIUMII | |
82 | bool "Pentium-II/Celeron(pre-Coppermine)" | |
83 | help | |
84 | Select this for Intel chips based on the Pentium-II and | |
85 | pre-Coppermine Celeron core. This option enables an unaligned | |
86 | copy optimization, compiles the kernel with optimization flags | |
87 | tailored for the chip, and applies any applicable Pentium Pro | |
88 | optimizations. | |
89 | ||
90 | config MPENTIUMIII | |
91 | bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon" | |
92 | help | |
93 | Select this for Intel chips based on the Pentium-III and | |
94 | Celeron-Coppermine core. This option enables use of some | |
95 | extended prefetch instructions in addition to the Pentium II | |
96 | extensions. | |
97 | ||
98 | config MPENTIUMM | |
99 | bool "Pentium M" | |
100 | help | |
101 | Select this for Intel Pentium M (not Pentium-4 M) | |
102 | notebook chips. | |
103 | ||
104 | config MPENTIUM4 | |
105 | bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/Xeon" | |
106 | help | |
107 | Select this for Intel Pentium 4 chips. This includes the | |
108 | Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M | |
109 | (not Pentium M) chips. This option enables compile flags | |
110 | optimized for the chip, uses the correct cache shift, and | |
111 | applies any applicable Pentium III optimizations. | |
112 | ||
113 | config MK6 | |
114 | bool "K6/K6-II/K6-III" | |
115 | help | |
116 | Select this for an AMD K6-family processor. Enables use of | |
117 | some extended instructions, and passes appropriate optimization | |
118 | flags to GCC. | |
119 | ||
120 | config MK7 | |
121 | bool "Athlon/Duron/K7" | |
122 | help | |
123 | Select this for an AMD Athlon K7-family processor. Enables use of | |
124 | some extended instructions, and passes appropriate optimization | |
125 | flags to GCC. | |
126 | ||
127 | config MK8 | |
128 | bool "Opteron/Athlon64/Hammer/K8" | |
129 | help | |
130 | Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables | |
131 | use of some extended instructions, and passes appropriate optimization | |
132 | flags to GCC. | |
133 | ||
134 | config MCRUSOE | |
135 | bool "Crusoe" | |
136 | help | |
137 | Select this for a Transmeta Crusoe processor. Treats the processor | |
138 | like a 586 with TSC, and sets some GCC optimization flags (like a | |
139 | Pentium Pro with no alignment requirements). | |
140 | ||
141 | config MEFFICEON | |
142 | bool "Efficeon" | |
143 | help | |
144 | Select this for a Transmeta Efficeon processor. | |
145 | ||
146 | config MWINCHIPC6 | |
147 | bool "Winchip-C6" | |
148 | help | |
149 | Select this for an IDT Winchip C6 chip. Linux and GCC | |
150 | treat this chip as a 586TSC with some extended instructions | |
151 | and alignment requirements. | |
152 | ||
153 | config MWINCHIP2 | |
154 | bool "Winchip-2" | |
155 | help | |
156 | Select this for an IDT Winchip-2. Linux and GCC | |
157 | treat this chip as a 586TSC with some extended instructions | |
158 | and alignment requirements. | |
159 | ||
160 | config MWINCHIP3D | |
161 | bool "Winchip-2A/Winchip-3" | |
162 | help | |
163 | Select this for an IDT Winchip-2A or 3. Linux and GCC | |
164 | treat this chip as a 586TSC with some extended instructions | |
165 | and alignment reqirements. Also enable out of order memory | |
166 | stores for this CPU, which can increase performance of some | |
167 | operations. | |
168 | ||
169 | config MGEODEGX1 | |
170 | bool "GeodeGX1" | |
171 | help | |
172 | Select this for a Geode GX1 (Cyrix MediaGX) chip. | |
173 | ||
174 | config MCYRIXIII | |
175 | bool "CyrixIII/VIA-C3" | |
176 | help | |
177 | Select this for a Cyrix III or C3 chip. Presently Linux and GCC | |
178 | treat this chip as a generic 586. Whilst the CPU is 686 class, | |
179 | it lacks the cmov extension which gcc assumes is present when | |
180 | generating 686 code. | |
181 | Note that Nehemiah (Model 9) and above will not boot with this | |
182 | kernel due to them lacking the 3DNow! instructions used in earlier | |
183 | incarnations of the CPU. | |
184 | ||
185 | config MVIAC3_2 | |
186 | bool "VIA C3-2 (Nehemiah)" | |
187 | help | |
188 | Select this for a VIA C3 "Nehemiah". Selecting this enables usage | |
189 | of SSE and tells gcc to treat the CPU as a 686. | |
190 | Note, this kernel will not boot on older (pre model 9) C3s. | |
191 | ||
192 | endchoice | |
193 | ||
194 | config X86_GENERIC | |
195 | bool "Generic x86 support" | |
196 | help | |
197 | Instead of just including optimizations for the selected | |
198 | x86 variant (e.g. PII, Crusoe or Athlon), include some more | |
199 | generic optimizations as well. This will make the kernel | |
200 | perform better on x86 CPUs other than that selected. | |
201 | ||
202 | This is really intended for distributors who need more | |
203 | generic optimizations. | |
204 | ||
205 | endif | |
206 | ||
207 | # | |
208 | # Define implied options from the CPU selection here | |
209 | # | |
210 | config X86_CMPXCHG | |
211 | bool | |
212 | depends on !M386 | |
213 | default y | |
214 | ||
215 | config X86_XADD | |
216 | bool | |
217 | depends on !M386 | |
218 | default y | |
219 | ||
220 | config X86_L1_CACHE_SHIFT | |
221 | int | |
222 | default "7" if MPENTIUM4 || X86_GENERIC | |
223 | default "4" if X86_ELAN || M486 || M386 | |
224 | default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODEGX1 | |
225 | default "6" if MK7 || MK8 || MPENTIUMM | |
226 | ||
227 | config RWSEM_GENERIC_SPINLOCK | |
228 | bool | |
229 | depends on M386 | |
230 | default y | |
231 | ||
232 | config RWSEM_XCHGADD_ALGORITHM | |
233 | bool | |
234 | depends on !M386 | |
235 | default y | |
236 | ||
237 | config GENERIC_CALIBRATE_DELAY | |
238 | bool | |
239 | default y | |
240 | ||
241 | config X86_PPRO_FENCE | |
242 | bool | |
243 | depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1 | |
244 | default y | |
245 | ||
246 | config X86_F00F_BUG | |
247 | bool | |
248 | depends on M586MMX || M586TSC || M586 || M486 || M386 | |
249 | default y | |
250 | ||
251 | config X86_WP_WORKS_OK | |
252 | bool | |
253 | depends on !M386 | |
254 | default y | |
255 | ||
256 | config X86_INVLPG | |
257 | bool | |
258 | depends on !M386 | |
259 | default y | |
260 | ||
261 | config X86_BSWAP | |
262 | bool | |
263 | depends on !M386 | |
264 | default y | |
265 | ||
266 | config X86_POPAD_OK | |
267 | bool | |
268 | depends on !M386 | |
269 | default y | |
270 | ||
271 | config X86_CMPXCHG64 | |
272 | bool | |
273 | depends on !M386 && !M486 | |
274 | default y | |
275 | ||
276 | config X86_ALIGNMENT_16 | |
277 | bool | |
278 | depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 | |
279 | default y | |
280 | ||
281 | config X86_GOOD_APIC | |
282 | bool | |
283 | depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON | |
284 | default y | |
285 | ||
286 | config X86_INTEL_USERCOPY | |
287 | bool | |
288 | depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON | |
289 | default y | |
290 | ||
291 | config X86_USE_PPRO_CHECKSUM | |
292 | bool | |
293 | depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON | |
294 | default y | |
295 | ||
296 | config X86_USE_3DNOW | |
297 | bool | |
298 | depends on MCYRIXIII || MK7 | |
299 | default y | |
300 | ||
301 | config X86_OOSTORE | |
302 | bool | |
303 | depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR | |
304 | default y | |
305 | ||
306 | config X86_TSC | |
307 | bool | |
308 | depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1) && !X86_NUMAQ | |
309 | default y |