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

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