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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         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 embeeded 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 if PPC_64K_PAGES
 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 
120 config E5500_CPU
121         bool "Freescale e5500"
122         depends on E500
123 
124 config E6500_CPU
125         bool "Freescale e6500"
126         depends on E500
127 
128 endchoice
129 
130 config PPC_BOOK3S
131         def_bool y
132         depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
133 
134 config PPC_BOOK3E
135         def_bool y
136         depends on PPC_BOOK3E_64
137 
138 config 6xx
139         def_bool y
140         depends on PPC32 && PPC_BOOK3S
141         select PPC_HAVE_PMU_SUPPORT
142 
143 config TUNE_CELL
144         bool "Optimize for Cell Broadband Engine"
145         depends on PPC64 && PPC_BOOK3S
146         help
147           Cause the compiler to optimize for the PPE of the Cell Broadband
148           Engine. This will make the code run considerably faster on Cell
149           but somewhat slower on other machines. This option only changes
150           the scheduling of instructions, not the selection of instructions
151           itself, so the resulting kernel will keep running on all other
152           machines.
153 
154 # this is temp to handle compat with arch=ppc
155 config 8xx
156         bool
157 
158 config E500
159         select FSL_EMB_PERFMON
160         select PPC_FSL_BOOK3E
161         bool
162 
163 config PPC_E500MC
164         bool "e500mc Support"
165         select PPC_FPU
166         select COMMON_CLK
167         depends on E500
168         help
169           This must be enabled for running on e500mc (and derivatives
170           such as e5500/e6500), and must be disabled for running on
171           e500v1 or e500v2.
172 
173 config PPC_FPU
174         bool
175         default y if PPC64
176 
177 config FSL_EMB_PERFMON
178         bool "Freescale Embedded Perfmon"
179         depends on E500 || PPC_83xx
180         help
181           This is the Performance Monitor support found on the e500 core
182           and some e300 cores (c3 and c4).  Select this only if your
183           core supports the Embedded Performance Monitor APU
184 
185 config FSL_EMB_PERF_EVENT
186         bool
187         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
188         default y
189 
190 config FSL_EMB_PERF_EVENT_E500
191         bool
192         depends on FSL_EMB_PERF_EVENT && E500
193         default y
194 
195 config 4xx
196         bool
197         depends on 40x || 44x
198         default y
199 
200 config BOOKE
201         bool
202         depends on E200 || E500 || 44x || PPC_BOOK3E
203         default y
204 
205 config FSL_BOOKE
206         bool
207         depends on (E200 || E500) && PPC32
208         default y
209 
210 # this is for common code between PPC32 & PPC64 FSL BOOKE
211 config PPC_FSL_BOOK3E
212         bool
213         select FSL_EMB_PERFMON
214         select PPC_SMP_MUXED_IPI
215         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
216         select PPC_DOORBELL
217         default y if FSL_BOOKE
218 
219 config PTE_64BIT
220         bool
221         depends on 44x || E500 || PPC_86xx
222         default y if PHYS_64BIT
223 
224 config PHYS_64BIT
225         bool 'Large physical address support' if E500 || PPC_86xx
226         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
227         ---help---
228           This option enables kernel support for larger than 32-bit physical
229           addresses.  This feature may not be available on all cores.
230 
231           If you have more than 3.5GB of RAM or so, you also need to enable
232           SWIOTLB under Kernel Options for this to work.  The actual number
233           is platform-dependent.
234 
235           If in doubt, say N here.
236 
237 config ALTIVEC
238         bool "AltiVec Support"
239         depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
240         ---help---
241           This option enables kernel support for the Altivec extensions to the
242           PowerPC processor. The kernel currently supports saving and restoring
243           altivec registers, and turning on the 'altivec enable' bit so user
244           processes can execute altivec instructions.
245 
246           This option is only usefully if you have a processor that supports
247           altivec (G4, otherwise known as 74xx series), but does not have
248           any affect on a non-altivec cpu (it does, however add code to the
249           kernel).
250 
251           If in doubt, say Y here.
252 
253 config VSX
254         bool "VSX Support"
255         depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
256         ---help---
257 
258           This option enables kernel support for the Vector Scaler extensions
259           to the PowerPC processor. The kernel currently supports saving and
260           restoring VSX registers, and turning on the 'VSX enable' bit so user
261           processes can execute VSX instructions.
262 
263           This option is only useful if you have a processor that supports
264           VSX (P7 and above), but does not have any affect on a non-VSX
265           CPUs (it does, however add code to the kernel).
266 
267           If in doubt, say Y here.
268 
269 config PPC_ICSWX
270         bool "Support for PowerPC icswx coprocessor instruction"
271         depends on PPC_BOOK3S_64
272         default n
273         ---help---
274 
275           This option enables kernel support for the PowerPC Initiate
276           Coprocessor Store Word (icswx) coprocessor instruction on POWER7
277           or newer processors.
278 
279           This option is only useful if you have a processor that supports
280           the icswx coprocessor instruction. It does not have any effect
281           on processors without the icswx coprocessor instruction.
282 
283           This option slightly increases kernel memory usage.
284 
285           If in doubt, say N here.
286 
287 config PPC_ICSWX_PID
288         bool "icswx requires direct PID management"
289         depends on PPC_ICSWX
290         default y
291         ---help---
292           The PID register in server is used explicitly for ICSWX.  In
293           embedded systems PID management is done by the system.
294 
295 config PPC_ICSWX_USE_SIGILL
296         bool "Should a bad CT cause a SIGILL?"
297         depends on PPC_ICSWX
298         default n
299         ---help---
300           Should a bad CT used for "non-record form ICSWX" cause an
301           illegal instruction signal or should it be silent as
302           architected.
303 
304           If in doubt, say N here.
305 
306 config SPE
307         bool "SPE Support"
308         depends on E200 || (E500 && !PPC_E500MC)
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 choice
398         prompt "Endianness selection"
399         default CPU_BIG_ENDIAN
400         help
401           This option selects whether a big endian or little endian kernel will
402           be built.
403 
404 config CPU_BIG_ENDIAN
405         bool "Build big endian kernel"
406         help
407           Build a big endian kernel.
408 
409           If unsure, select this option.
410 
411 config CPU_LITTLE_ENDIAN
412         bool "Build little endian kernel"
413         select PPC64_BOOT_WRAPPER
414         help
415           Build a little endian kernel.
416 
417           Note that if cross compiling a little endian kernel,
418           CROSS_COMPILE must point to a toolchain capable of targeting
419           little endian powerpc.
420 
421 endchoice
422 
423 config PPC64_BOOT_WRAPPER
424         def_bool n
425         depends on CPU_LITTLE_ENDIAN

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