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Linux/arch/powerpc/platforms/Kconfig.cputype

  1 config PPC64
  2         bool "64-bit kernel"
  3         default n
  4         select ZLIB_DEFLATE
  5         help
  6           This option selects whether a 32-bit or a 64-bit kernel
  7           will be built.
  8 
  9 menu "Processor support"
 10 choice
 11         prompt "Processor Type"
 12         depends on PPC32
 13         help
 14           There are five families of 32 bit PowerPC chips supported.
 15           The most common ones are the desktop and server CPUs (601, 603,
 16           604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
 17           embedded 512x/52xx/82xx/83xx/86xx counterparts.
 18           The other embedded parts, namely 4xx, 8xx, e200 (55xx) and e500
 19           (85xx) each form a family of their own that is not compatible
 20           with the others.
 21 
 22           If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
 23 
 24 config PPC_BOOK3S_32
 25         bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
 26         select PPC_FPU
 27 
 28 config PPC_85xx
 29         bool "Freescale 85xx"
 30         select E500
 31 
 32 config PPC_8xx
 33         bool "Freescale 8xx"
 34         select FSL_SOC
 35         select 8xx
 36         select PPC_LIB_RHEAP
 37 
 38 config 40x
 39         bool "AMCC 40x"
 40         select PPC_DCR_NATIVE
 41         select PPC_UDBG_16550
 42         select 4xx_SOC
 43         select PPC_PCI_CHOICE
 44 
 45 config 44x
 46         bool "AMCC 44x, 46x or 47x"
 47         select PPC_DCR_NATIVE
 48         select PPC_UDBG_16550
 49         select 4xx_SOC
 50         select PPC_PCI_CHOICE
 51         select PHYS_64BIT
 52 
 53 config E200
 54         bool "Freescale e200"
 55 
 56 endchoice
 57 
 58 choice
 59         prompt "Processor Type"
 60         depends on PPC64
 61         help
 62           There are two families of 64 bit PowerPC chips supported.
 63           The most common ones are the desktop and server CPUs
 64           (POWER4, POWER5, 970, POWER5+, POWER6, POWER7, POWER8 ...)
 65 
 66           The other are the "embedded" processors compliant with the
 67           "Book 3E" variant of the architecture
 68 
 69 config PPC_BOOK3S_64
 70         bool "Server processors"
 71         select PPC_FPU
 72         select PPC_HAVE_PMU_SUPPORT
 73         select SYS_SUPPORTS_HUGETLBFS
 74         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
 75         select ARCH_SUPPORTS_NUMA_BALANCING
 76         select IRQ_WORK
 77 
 78 config PPC_BOOK3E_64
 79         bool "Embedded processors"
 80         select PPC_FPU # Make it a choice ?
 81         select PPC_SMP_MUXED_IPI
 82         select PPC_DOORBELL
 83 
 84 endchoice
 85 
 86 choice
 87         prompt "CPU selection"
 88         depends on PPC64
 89         default GENERIC_CPU
 90         help
 91           This will create a kernel which is optimised for a particular CPU.
 92           The resulting kernel may not run on other CPUs, so use this with care.
 93 
 94           If unsure, select Generic.
 95 
 96 config GENERIC_CPU
 97         bool "Generic"
 98         depends on !CPU_LITTLE_ENDIAN
 99 
100 config CELL_CPU
101         bool "Cell Broadband Engine"
102         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
103 
104 config POWER4_CPU
105         bool "POWER4"
106         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
107 
108 config POWER5_CPU
109         bool "POWER5"
110         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
111 
112 config POWER6_CPU
113         bool "POWER6"
114         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
115 
116 config POWER7_CPU
117         bool "POWER7"
118         depends on PPC_BOOK3S_64
119         select ARCH_HAS_FAST_MULTIPLIER
120 
121 config POWER8_CPU
122         bool "POWER8"
123         depends on PPC_BOOK3S_64
124         select ARCH_HAS_FAST_MULTIPLIER
125 
126 config E5500_CPU
127         bool "Freescale e5500"
128         depends on E500
129 
130 config E6500_CPU
131         bool "Freescale e6500"
132         depends on E500
133 
134 endchoice
135 
136 config PPC_BOOK3S
137         def_bool y
138         depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
139 
140 config PPC_BOOK3E
141         def_bool y
142         depends on PPC_BOOK3E_64
143 
144 config 6xx
145         def_bool y
146         depends on PPC32 && PPC_BOOK3S
147         select PPC_HAVE_PMU_SUPPORT
148 
149 # this is temp to handle compat with arch=ppc
150 config 8xx
151         bool
152 
153 config E500
154         select FSL_EMB_PERFMON
155         select PPC_FSL_BOOK3E
156         bool
157 
158 config PPC_E500MC
159         bool "e500mc Support"
160         select PPC_FPU
161         select COMMON_CLK
162         depends on E500
163         help
164           This must be enabled for running on e500mc (and derivatives
165           such as e5500/e6500), and must be disabled for running on
166           e500v1 or e500v2.
167 
168 config PPC_FPU
169         bool
170         default y if PPC64
171 
172 config FSL_EMB_PERFMON
173         bool "Freescale Embedded Perfmon"
174         depends on E500 || PPC_83xx
175         help
176           This is the Performance Monitor support found on the e500 core
177           and some e300 cores (c3 and c4).  Select this only if your
178           core supports the Embedded Performance Monitor APU
179 
180 config FSL_EMB_PERF_EVENT
181         bool
182         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
183         default y
184 
185 config FSL_EMB_PERF_EVENT_E500
186         bool
187         depends on FSL_EMB_PERF_EVENT && E500
188         default y
189 
190 config 4xx
191         bool
192         depends on 40x || 44x
193         default y
194 
195 config BOOKE
196         bool
197         depends on E200 || E500 || 44x || PPC_BOOK3E
198         default y
199 
200 config FSL_BOOKE
201         bool
202         depends on (E200 || E500) && PPC32
203         default y
204 
205 # this is for common code between PPC32 & PPC64 FSL BOOKE
206 config PPC_FSL_BOOK3E
207         bool
208         select FSL_EMB_PERFMON
209         select PPC_SMP_MUXED_IPI
210         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
211         select PPC_DOORBELL
212         default y if FSL_BOOKE
213 
214 config PTE_64BIT
215         bool
216         depends on 44x || E500 || PPC_86xx
217         default y if PHYS_64BIT
218 
219 config PHYS_64BIT
220         bool 'Large physical address support' if E500 || PPC_86xx
221         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
222         ---help---
223           This option enables kernel support for larger than 32-bit physical
224           addresses.  This feature may not be available on all cores.
225 
226           If you have more than 3.5GB of RAM or so, you also need to enable
227           SWIOTLB under Kernel Options for this to work.  The actual number
228           is platform-dependent.
229 
230           If in doubt, say N here.
231 
232 config ALTIVEC
233         bool "AltiVec Support"
234         depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
235         ---help---
236           This option enables kernel support for the Altivec extensions to the
237           PowerPC processor. The kernel currently supports saving and restoring
238           altivec registers, and turning on the 'altivec enable' bit so user
239           processes can execute altivec instructions.
240 
241           This option is only usefully if you have a processor that supports
242           altivec (G4, otherwise known as 74xx series), but does not have
243           any affect on a non-altivec cpu (it does, however add code to the
244           kernel).
245 
246           If in doubt, say Y here.
247 
248 config VSX
249         bool "VSX Support"
250         depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
251         ---help---
252 
253           This option enables kernel support for the Vector Scaler extensions
254           to the PowerPC processor. The kernel currently supports saving and
255           restoring VSX registers, and turning on the 'VSX enable' bit so user
256           processes can execute VSX instructions.
257 
258           This option is only useful if you have a processor that supports
259           VSX (P7 and above), but does not have any affect on a non-VSX
260           CPUs (it does, however add code to the kernel).
261 
262           If in doubt, say Y here.
263 
264 config PPC_ICSWX
265         bool "Support for PowerPC icswx coprocessor instruction"
266         depends on PPC_BOOK3S_64
267         default n
268         ---help---
269 
270           This option enables kernel support for the PowerPC Initiate
271           Coprocessor Store Word (icswx) coprocessor instruction on POWER7
272           or newer processors.
273 
274           This option is only useful if you have a processor that supports
275           the icswx coprocessor instruction. It does not have any effect
276           on processors without the icswx coprocessor instruction.
277 
278           This option slightly increases kernel memory usage.
279 
280           If in doubt, say N here.
281 
282 config PPC_ICSWX_PID
283         bool "icswx requires direct PID management"
284         depends on PPC_ICSWX
285         default y
286         ---help---
287           The PID register in server is used explicitly for ICSWX.  In
288           embedded systems PID management is done by the system.
289 
290 config PPC_ICSWX_USE_SIGILL
291         bool "Should a bad CT cause a SIGILL?"
292         depends on PPC_ICSWX
293         default n
294         ---help---
295           Should a bad CT used for "non-record form ICSWX" cause an
296           illegal instruction signal or should it be silent as
297           architected.
298 
299           If in doubt, say N here.
300 
301 config SPE_POSSIBLE
302         def_bool y
303         depends on E200 || (E500 && !PPC_E500MC)
304 
305 config SPE
306         bool "SPE Support"
307         depends on SPE_POSSIBLE
308         default y
309         ---help---
310           This option enables kernel support for the Signal Processing
311           Extensions (SPE) to the PowerPC processor. The kernel currently
312           supports saving and restoring SPE registers, and turning on the
313           'spe enable' bit so user processes can execute SPE instructions.
314 
315           This option is only useful if you have a processor that supports
316           SPE (e500, otherwise known as 85xx series), but does not have any
317           effect on a non-spe cpu (it does, however add code to the kernel).
318 
319           If in doubt, say Y here.
320 
321 config PPC_STD_MMU
322         def_bool y
323         depends on PPC_BOOK3S
324 
325 config PPC_STD_MMU_32
326         def_bool y
327         depends on PPC_STD_MMU && PPC32
328 
329 config PPC_STD_MMU_64
330         def_bool y
331         depends on PPC_STD_MMU && PPC64
332 
333 config PPC_RADIX_MMU
334         bool "Radix MMU Support"
335         depends on PPC_BOOK3S_64
336         default y
337         help
338           Enable support for the Power ISA 3.0 Radix style MMU. Currently this
339           is only implemented by IBM Power9 CPUs, if you don't have one of them
340           you can probably disable this.
341 
342 config PPC_MMU_NOHASH
343         def_bool y
344         depends on !PPC_STD_MMU
345 
346 config PPC_BOOK3E_MMU
347         def_bool y
348         depends on FSL_BOOKE || PPC_BOOK3E
349 
350 config PPC_MM_SLICES
351         bool
352         default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
353         default n
354 
355 config PPC_HAVE_PMU_SUPPORT
356        bool
357 
358 config PPC_PERF_CTRS
359        def_bool y
360        depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
361        help
362          This enables the powerpc-specific perf_event back-end.
363 
364 config SMP
365         depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
366         bool "Symmetric multi-processing support"
367         ---help---
368           This enables support for systems with more than one CPU. If you have
369           a system with only one CPU, say N. If you have a system with more
370           than one CPU, say Y.  Note that the kernel does not currently
371           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
372           since they have inadequate hardware support for multiprocessor
373           operation.
374 
375           If you say N here, the kernel will run on single and multiprocessor
376           machines, but will use only one CPU of a multiprocessor machine. If
377           you say Y here, the kernel will run on single-processor machines.
378           On a single-processor machine, the kernel will run faster if you say
379           N here.
380 
381           If you don't know what to do here, say N.
382 
383 config NR_CPUS
384         int "Maximum number of CPUs (2-8192)"
385         range 2 8192
386         depends on SMP
387         default "32" if PPC64
388         default "4"
389 
390 config NOT_COHERENT_CACHE
391         bool
392         depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
393         default n if PPC_47x
394         default y
395 
396 config CHECK_CACHE_COHERENCY
397         bool
398 
399 config PPC_DOORBELL
400         bool
401         default n
402 
403 endmenu
404 
405 config VDSO32
406         def_bool y
407         depends on PPC32 || CPU_BIG_ENDIAN
408         help
409           This symbol controls whether we build the 32-bit VDSO. We obviously
410           want to do that if we're building a 32-bit kernel. If we're building
411           a 64-bit kernel then we only want a 32-bit VDSO if we're building for
412           big endian. That is because the only little endian configuration we
413           support is ppc64le which is 64-bit only.
414 
415 choice
416         prompt "Endianness selection"
417         default CPU_BIG_ENDIAN
418         help
419           This option selects whether a big endian or little endian kernel will
420           be built.
421 
422 config CPU_BIG_ENDIAN
423         bool "Build big endian kernel"
424         help
425           Build a big endian kernel.
426 
427           If unsure, select this option.
428 
429 config CPU_LITTLE_ENDIAN
430         bool "Build little endian kernel"
431         depends on PPC_BOOK3S_64
432         select PPC64_BOOT_WRAPPER
433         help
434           Build a little endian kernel.
435 
436           Note that if cross compiling a little endian kernel,
437           CROSS_COMPILE must point to a toolchain capable of targeting
438           little endian powerpc.
439 
440 endchoice
441 
442 config PPC64_BOOT_WRAPPER
443         def_bool n
444         depends on CPU_LITTLE_ENDIAN

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