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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 PPC_A2
152         bool
153         depends on PPC_BOOK3E_64
154 
155 config TUNE_CELL
156         bool "Optimize for Cell Broadband Engine"
157         depends on PPC64 && PPC_BOOK3S
158         help
159           Cause the compiler to optimize for the PPE of the Cell Broadband
160           Engine. This will make the code run considerably faster on Cell
161           but somewhat slower on other machines. This option only changes
162           the scheduling of instructions, not the selection of instructions
163           itself, so the resulting kernel will keep running on all other
164           machines.
165 
166 # this is temp to handle compat with arch=ppc
167 config 8xx
168         bool
169 
170 config E500
171         select FSL_EMB_PERFMON
172         select PPC_FSL_BOOK3E
173         bool
174 
175 config PPC_E500MC
176         bool "e500mc Support"
177         select PPC_FPU
178         select COMMON_CLK
179         depends on E500
180         help
181           This must be enabled for running on e500mc (and derivatives
182           such as e5500/e6500), and must be disabled for running on
183           e500v1 or e500v2.
184 
185 config PPC_FPU
186         bool
187         default y if PPC64
188 
189 config FSL_EMB_PERFMON
190         bool "Freescale Embedded Perfmon"
191         depends on E500 || PPC_83xx
192         help
193           This is the Performance Monitor support found on the e500 core
194           and some e300 cores (c3 and c4).  Select this only if your
195           core supports the Embedded Performance Monitor APU
196 
197 config FSL_EMB_PERF_EVENT
198         bool
199         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
200         default y
201 
202 config FSL_EMB_PERF_EVENT_E500
203         bool
204         depends on FSL_EMB_PERF_EVENT && E500
205         default y
206 
207 config 4xx
208         bool
209         depends on 40x || 44x
210         default y
211 
212 config BOOKE
213         bool
214         depends on E200 || E500 || 44x || PPC_BOOK3E
215         default y
216 
217 config FSL_BOOKE
218         bool
219         depends on (E200 || E500) && PPC32
220         default y
221 
222 # this is for common code between PPC32 & PPC64 FSL BOOKE
223 config PPC_FSL_BOOK3E
224         bool
225         select FSL_EMB_PERFMON
226         select PPC_SMP_MUXED_IPI
227         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
228         select PPC_DOORBELL
229         default y if FSL_BOOKE
230 
231 config PTE_64BIT
232         bool
233         depends on 44x || E500 || PPC_86xx
234         default y if PHYS_64BIT
235 
236 config PHYS_64BIT
237         bool 'Large physical address support' if E500 || PPC_86xx
238         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
239         ---help---
240           This option enables kernel support for larger than 32-bit physical
241           addresses.  This feature may not be available on all cores.
242 
243           If you have more than 3.5GB of RAM or so, you also need to enable
244           SWIOTLB under Kernel Options for this to work.  The actual number
245           is platform-dependent.
246 
247           If in doubt, say N here.
248 
249 config ALTIVEC
250         bool "AltiVec Support"
251         depends on 6xx || POWER4 || (PPC_E500MC && PPC64)
252         ---help---
253           This option enables kernel support for the Altivec extensions to the
254           PowerPC processor. The kernel currently supports saving and restoring
255           altivec registers, and turning on the 'altivec enable' bit so user
256           processes can execute altivec instructions.
257 
258           This option is only usefully if you have a processor that supports
259           altivec (G4, otherwise known as 74xx series), but does not have
260           any affect on a non-altivec cpu (it does, however add code to the
261           kernel).
262 
263           If in doubt, say Y here.
264 
265 config VSX
266         bool "VSX Support"
267         depends on POWER4 && ALTIVEC && PPC_FPU
268         ---help---
269 
270           This option enables kernel support for the Vector Scaler extensions
271           to the PowerPC processor. The kernel currently supports saving and
272           restoring VSX registers, and turning on the 'VSX enable' bit so user
273           processes can execute VSX instructions.
274 
275           This option is only useful if you have a processor that supports
276           VSX (P7 and above), but does not have any affect on a non-VSX
277           CPUs (it does, however add code to the kernel).
278 
279           If in doubt, say Y here.
280 
281 config PPC_ICSWX
282         bool "Support for PowerPC icswx coprocessor instruction"
283         depends on POWER4 || PPC_A2
284         default n
285         ---help---
286 
287           This option enables kernel support for the PowerPC Initiate
288           Coprocessor Store Word (icswx) coprocessor instruction on POWER7
289           or newer processors.
290 
291           This option is only useful if you have a processor that supports
292           the icswx coprocessor instruction. It does not have any effect
293           on processors without the icswx coprocessor instruction.
294 
295           This option slightly increases kernel memory usage.
296 
297           If in doubt, say N here.
298 
299 config PPC_ICSWX_PID
300         bool "icswx requires direct PID management"
301         depends on PPC_ICSWX && POWER4
302         default y
303         ---help---
304           The PID register in server is used explicitly for ICSWX.  In
305           embedded systems PID management is done by the system.
306 
307 config PPC_ICSWX_USE_SIGILL
308         bool "Should a bad CT cause a SIGILL?"
309         depends on PPC_ICSWX
310         default n
311         ---help---
312           Should a bad CT used for "non-record form ICSWX" cause an
313           illegal instruction signal or should it be silent as
314           architected.
315 
316           If in doubt, say N here.
317 
318 config SPE
319         bool "SPE Support"
320         depends on E200 || (E500 && !PPC_E500MC)
321         default y
322         ---help---
323           This option enables kernel support for the Signal Processing
324           Extensions (SPE) to the PowerPC processor. The kernel currently
325           supports saving and restoring SPE registers, and turning on the
326           'spe enable' bit so user processes can execute SPE instructions.
327 
328           This option is only useful if you have a processor that supports
329           SPE (e500, otherwise known as 85xx series), but does not have any
330           effect on a non-spe cpu (it does, however add code to the kernel).
331 
332           If in doubt, say Y here.
333 
334 config PPC_STD_MMU
335         def_bool y
336         depends on PPC_BOOK3S
337 
338 config PPC_STD_MMU_32
339         def_bool y
340         depends on PPC_STD_MMU && PPC32
341 
342 config PPC_STD_MMU_64
343         def_bool y
344         depends on PPC_STD_MMU && PPC64
345 
346 config PPC_MMU_NOHASH
347         def_bool y
348         depends on !PPC_STD_MMU
349 
350 config PPC_BOOK3E_MMU
351         def_bool y
352         depends on FSL_BOOKE || PPC_BOOK3E
353 
354 config PPC_MM_SLICES
355         bool
356         default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
357         default n
358 
359 config PPC_HAVE_PMU_SUPPORT
360        bool
361 
362 config PPC_PERF_CTRS
363        def_bool y
364        depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
365        help
366          This enables the powerpc-specific perf_event back-end.
367 
368 config SMP
369         depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
370         bool "Symmetric multi-processing support"
371         ---help---
372           This enables support for systems with more than one CPU. If you have
373           a system with only one CPU, say N. If you have a system with more
374           than one CPU, say Y.  Note that the kernel does not currently
375           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
376           since they have inadequate hardware support for multiprocessor
377           operation.
378 
379           If you say N here, the kernel will run on single and multiprocessor
380           machines, but will use only one CPU of a multiprocessor machine. If
381           you say Y here, the kernel will run on single-processor machines.
382           On a single-processor machine, the kernel will run faster if you say
383           N here.
384 
385           If you don't know what to do here, say N.
386 
387 config NR_CPUS
388         int "Maximum number of CPUs (2-8192)"
389         range 2 8192
390         depends on SMP
391         default "32" if PPC64
392         default "4"
393 
394 config NOT_COHERENT_CACHE
395         bool
396         depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
397         default n if PPC_47x
398         default y
399 
400 config CHECK_CACHE_COHERENCY
401         bool
402 
403 config PPC_DOORBELL
404         bool
405         default n
406 
407 endmenu
408 
409 choice
410         prompt "Endianness selection"
411         default CPU_BIG_ENDIAN
412         help
413           This option selects whether a big endian or little endian kernel will
414           be built.
415 
416 config CPU_BIG_ENDIAN
417         bool "Build big endian kernel"
418         help
419           Build a big endian kernel.
420 
421           If unsure, select this option.
422 
423 config CPU_LITTLE_ENDIAN
424         bool "Build little endian kernel"
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

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