1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 # Put here option for CPU selection and depend !! 2 comment "Processor Type"
>> 3
3 choice 4 choice
4 prompt "Processor family" !! 5 prompt "CPU family support"
5 default M686 if X86_32 !! 6 default M68KCLASSIC if MMU
6 default GENERIC_CPU if X86_64 !! 7 default COLDFIRE if !MMU
7 help !! 8 help
8 This is the processor type of your C !! 9 The Freescale (was Motorola) M68K family of processors implements
9 used for optimizing purposes. In ord !! 10 the full 68000 processor instruction set.
10 that can run on all supported x86 CP !! 11 The Freescale ColdFire family of processors is a modern derivative
11 optimally fast), you can specify "48 !! 12 of the 68000 processor family. They are mainly targeted at embedded
12 !! 13 applications, and are all System-On-Chip (SOC) devices, as opposed
13 Note that the 386 is no longer suppo !! 14 to stand alone CPUs. They implement a subset of the original 68000
14 AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, !! 15 processor instruction set.
15 UMC 486SX-S and the NexGen Nx586. !! 16 If you anticipate running this kernel on a computer with a classic
16 !! 17 MC68xxx processor, select M68KCLASSIC.
17 The kernel will not necessarily run !! 18 If you anticipate running this kernel on a computer with a ColdFire
18 the one you have chosen, e.g. a Pent !! 19 processor, select COLDFIRE.
19 a PPro, but not necessarily on a i48 !! 20
20 !! 21 config M68KCLASSIC
21 Here are the settings recommended fo !! 22 bool "Classic M68K CPU family support"
22 - "486" for the AMD/Cyrix/IBM/Intel !! 23 select HAVE_ARCH_PFN_VALID
23 SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5 !! 24
24 - "586" for generic Pentium CPUs lac !! 25 config COLDFIRE
25 (time stamp counter) register. !! 26 bool "Coldfire CPU family support"
26 - "Pentium-Classic" for the Intel Pe !! 27 select ARCH_HAVE_CUSTOM_GPIO_H
27 - "Pentium-MMX" for the Intel Pentiu !! 28 select CPU_HAS_NO_BITFIELDS
28 - "Pentium-Pro" for the Intel Pentiu !! 29 select CPU_HAS_NO_CAS
29 - "Pentium-II" for the Intel Pentium !! 30 select CPU_HAS_NO_MULDIV64
30 - "Pentium-III" for the Intel Pentiu !! 31 select GENERIC_CSUM
31 - "Pentium-4" for the Intel Pentium !! 32 select GPIOLIB
32 - "K6" for the AMD K6, K6-II and K6- !! 33 select HAVE_LEGACY_CLK
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 34
297 endchoice 35 endchoice
298 36
299 config X86_GENERIC !! 37 if M68KCLASSIC
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 38
386 config X86_DEBUGCTLMSR !! 39 config M68000
387 def_bool y 40 def_bool y
388 depends on !(MK6 || MWINCHIPC6 || MWIN !! 41 depends on !MMU
>> 42 select CPU_HAS_NO_BITFIELDS
>> 43 select CPU_HAS_NO_CAS
>> 44 select CPU_HAS_NO_MULDIV64
>> 45 select CPU_HAS_NO_UNALIGNED
>> 46 select GENERIC_CSUM
>> 47 select CPU_NO_EFFICIENT_FFS
>> 48 select HAVE_ARCH_HASH
>> 49 select LEGACY_TIMER_TICK
>> 50 help
>> 51 The Freescale (was Motorola) 68000 CPU is the first generation of
>> 52 the well known M68K family of processors. The CPU core as well as
>> 53 being available as a stand alone CPU was also used in many
>> 54 System-On-Chip devices (eg 68328, 68302, etc). It does not contain
>> 55 a paging MMU.
>> 56
>> 57 config M68020
>> 58 bool "68020 support"
>> 59 depends on MMU
>> 60 select FPU
>> 61 select CPU_HAS_ADDRESS_SPACES
>> 62 help
>> 63 If you anticipate running this kernel on a computer with a MC68020
>> 64 processor, say Y. Otherwise, say N. Note that the 68020 requires a
>> 65 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
>> 66 Sun 3, which provides its own version.
>> 67
>> 68 config M68030
>> 69 bool "68030 support"
>> 70 depends on MMU && !MMU_SUN3
>> 71 select FPU
>> 72 select CPU_HAS_ADDRESS_SPACES
>> 73 help
>> 74 If you anticipate running this kernel on a computer with a MC68030
>> 75 processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
>> 76 work, as it does not include an MMU (Memory Management Unit).
>> 77
>> 78 config M68040
>> 79 bool "68040 support"
>> 80 depends on MMU && !MMU_SUN3
>> 81 select FPU
>> 82 select CPU_HAS_ADDRESS_SPACES
>> 83 help
>> 84 If you anticipate running this kernel on a computer with a MC68LC040
>> 85 or MC68040 processor, say Y. Otherwise, say N. Note that an
>> 86 MC68EC040 will not work, as it does not include an MMU (Memory
>> 87 Management Unit).
>> 88
>> 89 config M68060
>> 90 bool "68060 support"
>> 91 depends on MMU && !MMU_SUN3
>> 92 select FPU
>> 93 select CPU_HAS_ADDRESS_SPACES
>> 94 help
>> 95 If you anticipate running this kernel on a computer with a MC68060
>> 96 processor, say Y. Otherwise, say N.
>> 97
>> 98 config M68328
>> 99 bool
>> 100 depends on !MMU
>> 101 select M68000
>> 102 help
>> 103 Motorola 68328 processor support.
>> 104
>> 105 config M68EZ328
>> 106 bool
>> 107 depends on !MMU
>> 108 select M68000
>> 109 help
>> 110 Motorola 68EX328 processor support.
>> 111
>> 112 config M68VZ328
>> 113 bool
>> 114 depends on !MMU
>> 115 select M68000
>> 116 help
>> 117 Motorola 68VZ328 processor support.
389 118
390 config IA32_FEAT_CTL !! 119 endif # M68KCLASSIC
391 def_bool y <<
392 depends on CPU_SUP_INTEL || CPU_SUP_CE <<
393 120
394 config X86_VMX_FEATURE_NAMES !! 121 if COLDFIRE
395 def_bool y <<
396 depends on IA32_FEAT_CTL <<
397 122
398 menuconfig PROCESSOR_SELECT !! 123 choice
399 bool "Supported processor vendors" if !! 124 prompt "ColdFire SoC type"
>> 125 default M520x
400 help 126 help
401 This lets you choose what x86 vendor !! 127 Select the type of ColdFire System-on-Chip (SoC) that you want
402 will include. !! 128 to build for.
403 129
404 config CPU_SUP_INTEL !! 130 config M5206
405 default y !! 131 bool "MCF5206"
406 bool "Support Intel processors" if PRO !! 132 depends on !MMU
>> 133 select COLDFIRE_SW_A7
>> 134 select COLDFIRE_TIMERS
>> 135 select HAVE_MBAR
>> 136 select CPU_NO_EFFICIENT_FFS
>> 137 help
>> 138 Motorola ColdFire 5206 processor support.
>> 139
>> 140 config M5206e
>> 141 bool "MCF5206e"
>> 142 depends on !MMU
>> 143 select COLDFIRE_SW_A7
>> 144 select COLDFIRE_TIMERS
>> 145 select HAVE_MBAR
>> 146 select CPU_NO_EFFICIENT_FFS
>> 147 help
>> 148 Motorola ColdFire 5206e processor support.
>> 149
>> 150 config M520x
>> 151 bool "MCF520x"
>> 152 depends on !MMU
>> 153 select COLDFIRE_PIT_TIMER
>> 154 select HAVE_CACHE_SPLIT
>> 155 help
>> 156 Freescale Coldfire 5207/5208 processor support.
>> 157
>> 158 config M523x
>> 159 bool "MCF523x"
>> 160 depends on !MMU
>> 161 select COLDFIRE_PIT_TIMER
>> 162 select HAVE_CACHE_SPLIT
>> 163 select HAVE_IPSBAR
>> 164 help
>> 165 Freescale Coldfire 5230/1/2/4/5 processor support
>> 166
>> 167 config M5249
>> 168 bool "MCF5249"
>> 169 depends on !MMU
>> 170 select COLDFIRE_SW_A7
>> 171 select COLDFIRE_TIMERS
>> 172 select HAVE_MBAR
>> 173 select CPU_NO_EFFICIENT_FFS
>> 174 help
>> 175 Motorola ColdFire 5249 processor support.
>> 176
>> 177 config M525x
>> 178 bool "MCF525x"
>> 179 depends on !MMU
>> 180 select COLDFIRE_SW_A7
>> 181 select COLDFIRE_TIMERS
>> 182 select HAVE_MBAR
>> 183 select CPU_NO_EFFICIENT_FFS
>> 184 help
>> 185 Freescale (Motorola) Coldfire 5251/5253 processor support.
>> 186
>> 187 config M5271
>> 188 bool "MCF5271"
>> 189 depends on !MMU
>> 190 select COLDFIRE_PIT_TIMER
>> 191 select M527x
>> 192 select HAVE_CACHE_SPLIT
>> 193 select HAVE_IPSBAR
>> 194 help
>> 195 Freescale (Motorola) ColdFire 5270/5271 processor support.
>> 196
>> 197 config M5272
>> 198 bool "MCF5272"
>> 199 depends on !MMU
>> 200 select COLDFIRE_SW_A7
>> 201 select COLDFIRE_TIMERS
>> 202 select HAVE_MBAR
>> 203 select CPU_NO_EFFICIENT_FFS
>> 204 help
>> 205 Motorola ColdFire 5272 processor support.
>> 206
>> 207 config M5275
>> 208 bool "MCF5275"
>> 209 depends on !MMU
>> 210 select COLDFIRE_PIT_TIMER
>> 211 select M527x
>> 212 select HAVE_CACHE_SPLIT
>> 213 select HAVE_IPSBAR
>> 214 help
>> 215 Freescale (Motorola) ColdFire 5274/5275 processor support.
>> 216
>> 217 config M528x
>> 218 bool "MCF528x"
>> 219 depends on !MMU
>> 220 select COLDFIRE_PIT_TIMER
>> 221 select HAVE_CACHE_SPLIT
>> 222 select HAVE_IPSBAR
>> 223 help
>> 224 Motorola ColdFire 5280/5282 processor support.
>> 225
>> 226 config M5307
>> 227 bool "MCF5307"
>> 228 depends on !MMU
>> 229 select COLDFIRE_TIMERS
>> 230 select COLDFIRE_SW_A7
>> 231 select HAVE_CACHE_CB
>> 232 select HAVE_MBAR
>> 233 select CPU_NO_EFFICIENT_FFS
>> 234 help
>> 235 Motorola ColdFire 5307 processor support.
>> 236
>> 237 config M532x
>> 238 bool "MCF532x"
>> 239 depends on !MMU
>> 240 select COLDFIRE_TIMERS
>> 241 select M53xx
>> 242 select HAVE_CACHE_CB
>> 243 help
>> 244 Freescale (Motorola) ColdFire 532x processor support.
>> 245
>> 246 config M537x
>> 247 bool "MCF537x"
>> 248 depends on !MMU
>> 249 select COLDFIRE_TIMERS
>> 250 select M53xx
>> 251 select HAVE_CACHE_CB
>> 252 help
>> 253 Freescale ColdFire 537x processor support.
>> 254
>> 255 config M5407
>> 256 bool "MCF5407"
>> 257 depends on !MMU
>> 258 select COLDFIRE_SW_A7
>> 259 select COLDFIRE_TIMERS
>> 260 select HAVE_CACHE_CB
>> 261 select HAVE_MBAR
>> 262 select CPU_NO_EFFICIENT_FFS
>> 263 help
>> 264 Motorola ColdFire 5407 processor support.
>> 265
>> 266 config M547x
>> 267 bool "MCF547x"
>> 268 select M54xx
>> 269 select COLDFIRE_SLTIMERS
>> 270 select MMU_COLDFIRE if MMU
>> 271 select FPU if MMU
>> 272 select HAVE_CACHE_CB
>> 273 select HAVE_MBAR
>> 274 select CPU_NO_EFFICIENT_FFS
>> 275 help
>> 276 Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support.
>> 277
>> 278 config M548x
>> 279 bool "MCF548x"
>> 280 select COLDFIRE_SLTIMERS
>> 281 select MMU_COLDFIRE if MMU
>> 282 select FPU if MMU
>> 283 select M54xx
>> 284 select HAVE_CACHE_CB
>> 285 select HAVE_MBAR
>> 286 select CPU_NO_EFFICIENT_FFS
>> 287 help
>> 288 Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.
>> 289
>> 290 config M5441x
>> 291 bool "MCF5441x"
>> 292 select COLDFIRE_PIT_TIMER
>> 293 select MMU_COLDFIRE if MMU
>> 294 select HAVE_CACHE_CB
407 help 295 help
408 This enables detection, tunings and !! 296 Freescale Coldfire 54410/54415/54416/54417/54418 processor support.
409 297
410 You need this enabled if you want yo !! 298 endchoice
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 <<
423 299
424 You need this enabled if you want yo !! 300 config M527x
425 Cyrix CPU. Disabling this option on !! 301 bool
426 makes the kernel a tiny bit smaller. <<
427 CPU might render the kernel unbootab <<
428 302
429 If unsure, say N. !! 303 config M53xx
>> 304 bool
430 305
431 config CPU_SUP_AMD !! 306 config M54xx
>> 307 select HAVE_PCI
>> 308 bool
>> 309
>> 310 config COLDFIRE_PIT_TIMER
>> 311 bool
>> 312
>> 313 config COLDFIRE_TIMERS
>> 314 bool
>> 315 select LEGACY_TIMER_TICK
>> 316
>> 317 config COLDFIRE_SLTIMERS
>> 318 bool
>> 319 select LEGACY_TIMER_TICK
>> 320
>> 321 endif # COLDFIRE
>> 322
>> 323 comment "Processor Specific Options"
>> 324
>> 325 config M68KFPU_EMU
>> 326 bool "Math emulation support"
>> 327 depends on M68KCLASSIC && FPU
>> 328 help
>> 329 At some point in the future, this will cause floating-point math
>> 330 instructions to be emulated by the kernel on machines that lack a
>> 331 floating-point math coprocessor. Thrill-seekers and chronically
>> 332 sleep-deprived psychotic hacker types can say Y now, everyone else
>> 333 should probably wait a while.
>> 334
>> 335 config M68KFPU_EMU_EXTRAPREC
>> 336 bool "Math emulation extra precision"
>> 337 depends on M68KFPU_EMU
>> 338 help
>> 339 The fpu uses normally a few bit more during calculations for
>> 340 correct rounding, the emulator can (often) do the same but this
>> 341 extra calculation can cost quite some time, so you can disable
>> 342 it here. The emulator will then "only" calculate with a 64 bit
>> 343 mantissa and round slightly incorrect, what is more than enough
>> 344 for normal usage.
>> 345
>> 346 config M68KFPU_EMU_ONLY
>> 347 bool "Math emulation only kernel"
>> 348 depends on M68KFPU_EMU
>> 349 help
>> 350 This option prevents any floating-point instructions from being
>> 351 compiled into the kernel, thereby the kernel doesn't save any
>> 352 floating point context anymore during task switches, so this
>> 353 kernel will only be usable on machines without a floating-point
>> 354 math coprocessor. This makes the kernel a bit faster as no tests
>> 355 needs to be executed whether a floating-point instruction in the
>> 356 kernel should be executed or not.
>> 357
>> 358 config ADVANCED
>> 359 bool "Advanced configuration options"
>> 360 depends on MMU
>> 361 help
>> 362 This gives you access to some advanced options for the CPU. The
>> 363 defaults should be fine for most users, but these options may make
>> 364 it possible for you to improve performance somewhat if you know what
>> 365 you are doing.
>> 366
>> 367 Note that the answer to this question won't directly affect the
>> 368 kernel: saying N will just cause the configurator to skip all
>> 369 the questions about these options.
>> 370
>> 371 Most users should say N to this question.
>> 372
>> 373 config RMW_INSNS
>> 374 bool "Use read-modify-write instructions"
>> 375 depends on ADVANCED && !CPU_HAS_NO_CAS
>> 376 help
>> 377 This allows to use certain instructions that work with indivisible
>> 378 read-modify-write bus cycles. While this is faster than the
>> 379 workaround of disabling interrupts, it can conflict with DMA
>> 380 ( = direct memory access) on many Amiga systems, and it is also said
>> 381 to destabilize other machines. It is very likely that this will
>> 382 cause serious problems on any Amiga or Atari Medusa if set. The only
>> 383 configuration where it should work are 68030-based Ataris, where it
>> 384 apparently improves performance. But you've been warned! Unless you
>> 385 really know what you are doing, say N. Try Y only if you're quite
>> 386 adventurous.
>> 387
>> 388 config SINGLE_MEMORY_CHUNK
>> 389 bool "Use one physical chunk of memory only" if ADVANCED && !SUN3
>> 390 depends on MMU
>> 391 default y if SUN3 || MMU_COLDFIRE
>> 392 help
>> 393 Ignore all but the first contiguous chunk of physical memory for VM
>> 394 purposes. This will save a few bytes kernel size and may speed up
>> 395 some operations.
>> 396 When this option os set to N, you may want to lower "Maximum zone
>> 397 order" to save memory that could be wasted for unused memory map.
>> 398 Say N if not sure.
>> 399
>> 400 config ARCH_FORCE_MAX_ORDER
>> 401 int "Maximum zone order" if ADVANCED
>> 402 depends on !SINGLE_MEMORY_CHUNK
>> 403 default "11"
>> 404 help
>> 405 The kernel memory allocator divides physically contiguous memory
>> 406 blocks into "zones", where each zone is a power of two number of
>> 407 pages. This option selects the largest power of two that the kernel
>> 408 keeps in the memory allocator. If you need to allocate very large
>> 409 blocks of physically contiguous memory, then you may need to
>> 410 increase this value.
>> 411
>> 412 For systems that have holes in their physical address space this
>> 413 value also defines the minimal size of the hole that allows
>> 414 freeing unused memory map.
>> 415
>> 416 This config option is actually maximum order plus one. For example,
>> 417 a value of 11 means that the largest free memory block is 2^10 pages.
>> 418
>> 419 config 060_WRITETHROUGH
>> 420 bool "Use write-through caching for 68060 supervisor accesses"
>> 421 depends on ADVANCED && M68060
>> 422 help
>> 423 The 68060 generally uses copyback caching of recently accessed data.
>> 424 Copyback caching means that memory writes will be held in an on-chip
>> 425 cache and only written back to memory some time later. Saying Y
>> 426 here will force supervisor (kernel) accesses to use writethrough
>> 427 caching. Writethrough caching means that data is written to memory
>> 428 straight away, so that cache and memory data always agree.
>> 429 Writethrough caching is less efficient, but is needed for some
>> 430 drivers on 68060 based systems where the 68060 bus snooping signal
>> 431 is hardwired on. The 53c710 SCSI driver is known to suffer from
>> 432 this problem.
>> 433
>> 434 config M68K_L2_CACHE
>> 435 bool
>> 436 depends on MAC
432 default y 437 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 <<
441 438
442 If unsure, say N. !! 439 config CPU_HAS_NO_BITFIELDS
>> 440 bool
443 441
444 config CPU_SUP_HYGON !! 442 config CPU_HAS_NO_CAS
445 default y !! 443 bool
446 bool "Support Hygon processors" if PRO <<
447 select CPU_SUP_AMD <<
448 help <<
449 This enables detection, tunings and <<
450 444
451 You need this enabled if you want yo !! 445 config CPU_HAS_NO_MULDIV64
452 Hygon CPU. Disabling this option on !! 446 bool
453 makes the kernel a tiny bit smaller. <<
454 CPU might render the kernel unbootab <<
455 447
456 If unsure, say N. !! 448 config CPU_HAS_NO_UNALIGNED
457 !! 449 bool
458 config CPU_SUP_CENTAUR !! 450
459 default y !! 451 config CPU_HAS_ADDRESS_SPACES
460 bool "Support Centaur processors" if P !! 452 bool
>> 453 select ALTERNATE_USER_ADDRESS_SPACE
>> 454
>> 455 config FPU
>> 456 bool
>> 457
>> 458 config COLDFIRE_SW_A7
>> 459 bool
>> 460
>> 461 config HAVE_CACHE_SPLIT
>> 462 bool
>> 463
>> 464 config HAVE_CACHE_CB
>> 465 bool
>> 466
>> 467 config HAVE_MBAR
>> 468 bool
>> 469
>> 470 config HAVE_IPSBAR
>> 471 bool
>> 472
>> 473 config CLOCK_FREQ
>> 474 int "Set the core clock frequency"
>> 475 default "25000000" if M5206
>> 476 default "54000000" if M5206e
>> 477 default "166666666" if M520x
>> 478 default "140000000" if M5249
>> 479 default "150000000" if M527x || M523x
>> 480 default "90000000" if M5307
>> 481 default "50000000" if M5407
>> 482 default "266000000" if M54xx
>> 483 default "66666666"
>> 484 depends on COLDFIRE
>> 485 help
>> 486 Define the CPU clock frequency in use. This is the core clock
>> 487 frequency, it may or may not be the same as the external clock
>> 488 crystal fitted to your board. Some processors have an internal
>> 489 PLL and can have their frequency programmed at run time, others
>> 490 use internal dividers. In general the kernel won't setup a PLL
>> 491 if it is fitted (there are some exceptions). This value will be
>> 492 specific to the exact CPU that you are using.
>> 493
>> 494 config OLDMASK
>> 495 bool "Old mask 5307 (1H55J) silicon"
>> 496 depends on M5307
461 help 497 help
462 This enables detection, tunings and !! 498 Build support for the older revision ColdFire 5307 silicon.
>> 499 Specifically this is the 1H55J mask revision.
463 500
464 You need this enabled if you want yo !! 501 if HAVE_CACHE_SPLIT
465 Centaur CPU. Disabling this option o !! 502 choice
466 makes the kernel a tiny bit smaller. !! 503 prompt "Split Cache Configuration"
467 CPU might render the kernel unbootab !! 504 default CACHE_I
468 <<
469 If unsure, say N. <<
470 505
471 config CPU_SUP_TRANSMETA_32 !! 506 config CACHE_I
472 default y !! 507 bool "Instruction"
473 bool "Support Transmeta processors" if <<
474 depends on !64BIT <<
475 help 508 help
476 This enables detection, tunings and !! 509 Use all of the ColdFire CPU cache memory as an instruction cache.
477 510
478 You need this enabled if you want yo !! 511 config CACHE_D
479 Transmeta CPU. Disabling this option !! 512 bool "Data"
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 513 help
490 This enables detection, tunings and !! 514 Use all of the ColdFire CPU cache memory as a data cache.
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 <<
496 515
497 If unsure, say N. !! 516 config CACHE_BOTH
498 !! 517 bool "Both"
499 config CPU_SUP_ZHAOXIN <<
500 default y <<
501 bool "Support Zhaoxin processors" if P <<
502 help 518 help
503 This enables detection, tunings and !! 519 Split the ColdFire CPU cache, and use half as an instruction cache
504 !! 520 and half as a data cache.
505 You need this enabled if you want yo !! 521 endchoice
506 Zhaoxin CPU. Disabling this option o !! 522 endif # HAVE_CACHE_SPLIT
507 makes the kernel a tiny bit smaller. <<
508 CPU might render the kernel unbootab <<
509 523
510 If unsure, say N. !! 524 if HAVE_CACHE_CB
>> 525 choice
>> 526 prompt "Data cache mode"
>> 527 default CACHE_WRITETHRU
511 528
512 config CPU_SUP_VORTEX_32 !! 529 config CACHE_WRITETHRU
513 default y !! 530 bool "Write-through"
514 bool "Support Vortex processors" if PR <<
515 depends on X86_32 <<
516 help 531 help
517 This enables detection, tunings and !! 532 The ColdFire CPU cache is set into Write-through mode.
518 533
519 You need this enabled if you want yo !! 534 config CACHE_COPYBACK
520 Vortex CPU. Disabling this option on !! 535 bool "Copy-back"
521 makes the kernel a tiny bit smaller. !! 536 help
522 !! 537 The ColdFire CPU cache is set into Copy-back mode.
523 If unsure, say N. !! 538 endchoice
>> 539 endif # HAVE_CACHE_CB
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