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Linux/arch/powerpc/platforms/Kconfig.cputype

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

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