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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           (POWER3, RS64, POWER4, POWER5, POWER5+, POWER6, ...)
 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 POWER3
144         depends on PPC64 && PPC_BOOK3S
145         def_bool y
146 
147 config POWER4
148         depends on PPC64 && PPC_BOOK3S
149         def_bool y
150 
151 config TUNE_CELL
152         bool "Optimize for Cell Broadband Engine"
153         depends on PPC64 && PPC_BOOK3S
154         help
155           Cause the compiler to optimize for the PPE of the Cell Broadband
156           Engine. This will make the code run considerably faster on Cell
157           but somewhat slower on other machines. This option only changes
158           the scheduling of instructions, not the selection of instructions
159           itself, so the resulting kernel will keep running on all other
160           machines.
161 
162 # this is temp to handle compat with arch=ppc
163 config 8xx
164         bool
165 
166 config E500
167         select FSL_EMB_PERFMON
168         select PPC_FSL_BOOK3E
169         bool
170 
171 config PPC_E500MC
172         bool "e500mc Support"
173         select PPC_FPU
174         select COMMON_CLK
175         depends on E500
176         help
177           This must be enabled for running on e500mc (and derivatives
178           such as e5500/e6500), and must be disabled for running on
179           e500v1 or e500v2.
180 
181 config PPC_FPU
182         bool
183         default y if PPC64
184 
185 config FSL_EMB_PERFMON
186         bool "Freescale Embedded Perfmon"
187         depends on E500 || PPC_83xx
188         help
189           This is the Performance Monitor support found on the e500 core
190           and some e300 cores (c3 and c4).  Select this only if your
191           core supports the Embedded Performance Monitor APU
192 
193 config FSL_EMB_PERF_EVENT
194         bool
195         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
196         default y
197 
198 config FSL_EMB_PERF_EVENT_E500
199         bool
200         depends on FSL_EMB_PERF_EVENT && E500
201         default y
202 
203 config 4xx
204         bool
205         depends on 40x || 44x
206         default y
207 
208 config BOOKE
209         bool
210         depends on E200 || E500 || 44x || PPC_BOOK3E
211         default y
212 
213 config FSL_BOOKE
214         bool
215         depends on (E200 || E500) && PPC32
216         default y
217 
218 # this is for common code between PPC32 & PPC64 FSL BOOKE
219 config PPC_FSL_BOOK3E
220         bool
221         select FSL_EMB_PERFMON
222         select PPC_SMP_MUXED_IPI
223         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
224         select PPC_DOORBELL
225         default y if FSL_BOOKE
226 
227 config PTE_64BIT
228         bool
229         depends on 44x || E500 || PPC_86xx
230         default y if PHYS_64BIT
231 
232 config PHYS_64BIT
233         bool 'Large physical address support' if E500 || PPC_86xx
234         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
235         ---help---
236           This option enables kernel support for larger than 32-bit physical
237           addresses.  This feature may not be available on all cores.
238 
239           If you have more than 3.5GB of RAM or so, you also need to enable
240           SWIOTLB under Kernel Options for this to work.  The actual number
241           is platform-dependent.
242 
243           If in doubt, say N here.
244 
245 config ALTIVEC
246         bool "AltiVec Support"
247         depends on 6xx || POWER4 || (PPC_E500MC && PPC64)
248         ---help---
249           This option enables kernel support for the Altivec extensions to the
250           PowerPC processor. The kernel currently supports saving and restoring
251           altivec registers, and turning on the 'altivec enable' bit so user
252           processes can execute altivec instructions.
253 
254           This option is only usefully if you have a processor that supports
255           altivec (G4, otherwise known as 74xx series), but does not have
256           any affect on a non-altivec cpu (it does, however add code to the
257           kernel).
258 
259           If in doubt, say Y here.
260 
261 config VSX
262         bool "VSX Support"
263         depends on POWER4 && ALTIVEC && PPC_FPU
264         ---help---
265 
266           This option enables kernel support for the Vector Scaler extensions
267           to the PowerPC processor. The kernel currently supports saving and
268           restoring VSX registers, and turning on the 'VSX enable' bit so user
269           processes can execute VSX instructions.
270 
271           This option is only useful if you have a processor that supports
272           VSX (P7 and above), but does not have any affect on a non-VSX
273           CPUs (it does, however add code to the kernel).
274 
275           If in doubt, say Y here.
276 
277 config PPC_ICSWX
278         bool "Support for PowerPC icswx coprocessor instruction"
279         depends on POWER4
280         default n
281         ---help---
282 
283           This option enables kernel support for the PowerPC Initiate
284           Coprocessor Store Word (icswx) coprocessor instruction on POWER7
285           or newer processors.
286 
287           This option is only useful if you have a processor that supports
288           the icswx coprocessor instruction. It does not have any effect
289           on processors without the icswx coprocessor instruction.
290 
291           This option slightly increases kernel memory usage.
292 
293           If in doubt, say N here.
294 
295 config PPC_ICSWX_PID
296         bool "icswx requires direct PID management"
297         depends on PPC_ICSWX && POWER4
298         default y
299         ---help---
300           The PID register in server is used explicitly for ICSWX.  In
301           embedded systems PID management is done by the system.
302 
303 config PPC_ICSWX_USE_SIGILL
304         bool "Should a bad CT cause a SIGILL?"
305         depends on PPC_ICSWX
306         default n
307         ---help---
308           Should a bad CT used for "non-record form ICSWX" cause an
309           illegal instruction signal or should it be silent as
310           architected.
311 
312           If in doubt, say N here.
313 
314 config SPE
315         bool "SPE Support"
316         depends on E200 || (E500 && !PPC_E500MC)
317         default y
318         ---help---
319           This option enables kernel support for the Signal Processing
320           Extensions (SPE) to the PowerPC processor. The kernel currently
321           supports saving and restoring SPE registers, and turning on the
322           'spe enable' bit so user processes can execute SPE instructions.
323 
324           This option is only useful if you have a processor that supports
325           SPE (e500, otherwise known as 85xx series), but does not have any
326           effect on a non-spe cpu (it does, however add code to the kernel).
327 
328           If in doubt, say Y here.
329 
330 config PPC_STD_MMU
331         def_bool y
332         depends on PPC_BOOK3S
333 
334 config PPC_STD_MMU_32
335         def_bool y
336         depends on PPC_STD_MMU && PPC32
337 
338 config PPC_STD_MMU_64
339         def_bool y
340         depends on PPC_STD_MMU && PPC64
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 choice
406         prompt "Endianness selection"
407         default CPU_BIG_ENDIAN
408         help
409           This option selects whether a big endian or little endian kernel will
410           be built.
411 
412 config CPU_BIG_ENDIAN
413         bool "Build big endian kernel"
414         help
415           Build a big endian kernel.
416 
417           If unsure, select this option.
418 
419 config CPU_LITTLE_ENDIAN
420         bool "Build little endian kernel"
421         select PPC64_BOOT_WRAPPER
422         help
423           Build a little endian kernel.
424 
425           Note that if cross compiling a little endian kernel,
426           CROSS_COMPILE must point to a toolchain capable of targeting
427           little endian powerpc.
428 
429 endchoice
430 
431 config PPC64_BOOT_WRAPPER
432         def_bool n
433         depends on CPU_LITTLE_ENDIAN

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