4 select HAVE_VIRT_CPU_ACCOUNTING
6 This option selects whether a 32-bit or a 64-bit kernel
9 menu "Processor support"
11 prompt "Processor Type"
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
22 If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
25 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
46 bool "AMCC 44x, 46x or 47x"
59 prompt "Processor Type"
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 ...)
66 The other are the "embedded" processors compliant with the
67 "Book 3E" variant of the architecture
70 bool "Server processors"
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
79 bool "Embedded processors"
80 select PPC_FPU # Make it a choice ?
81 select PPC_SMP_MUXED_IPI
87 prompt "CPU selection"
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.
94 If unsure, select Generic.
98 depends on !CPU_LITTLE_ENDIAN
101 bool "Cell Broadband Engine"
102 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
106 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
110 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
114 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
118 depends on PPC_BOOK3S_64
122 depends on PPC_BOOK3S_64
125 bool "Freescale e5500"
129 bool "Freescale e6500"
136 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
140 depends on PPC_BOOK3E_64
144 depends on PPC32 && PPC_BOOK3S
145 select PPC_HAVE_PMU_SUPPORT
148 bool "Optimize for Cell Broadband Engine"
149 depends on PPC64 && PPC_BOOK3S
151 Cause the compiler to optimize for the PPE of the Cell Broadband
152 Engine. This will make the code run considerably faster on Cell
153 but somewhat slower on other machines. This option only changes
154 the scheduling of instructions, not the selection of instructions
155 itself, so the resulting kernel will keep running on all other
158 # this is temp to handle compat with arch=ppc
163 select FSL_EMB_PERFMON
164 select PPC_FSL_BOOK3E
168 bool "e500mc Support"
173 This must be enabled for running on e500mc (and derivatives
174 such as e5500/e6500), and must be disabled for running on
181 config FSL_EMB_PERFMON
182 bool "Freescale Embedded Perfmon"
183 depends on E500 || PPC_83xx
185 This is the Performance Monitor support found on the e500 core
186 and some e300 cores (c3 and c4). Select this only if your
187 core supports the Embedded Performance Monitor APU
189 config FSL_EMB_PERF_EVENT
191 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
194 config FSL_EMB_PERF_EVENT_E500
196 depends on FSL_EMB_PERF_EVENT && E500
201 depends on 40x || 44x
206 depends on E200 || E500 || 44x || PPC_BOOK3E
211 depends on (E200 || E500) && PPC32
214 # this is for common code between PPC32 & PPC64 FSL BOOKE
215 config PPC_FSL_BOOK3E
217 select FSL_EMB_PERFMON
218 select PPC_SMP_MUXED_IPI
219 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
221 default y if FSL_BOOKE
225 depends on 44x || E500 || PPC_86xx
226 default y if PHYS_64BIT
229 bool 'Large physical address support' if E500 || PPC_86xx
230 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
232 This option enables kernel support for larger than 32-bit physical
233 addresses. This feature may not be available on all cores.
235 If you have more than 3.5GB of RAM or so, you also need to enable
236 SWIOTLB under Kernel Options for this to work. The actual number
237 is platform-dependent.
239 If in doubt, say N here.
242 bool "AltiVec Support"
243 depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
245 This option enables kernel support for the Altivec extensions to the
246 PowerPC processor. The kernel currently supports saving and restoring
247 altivec registers, and turning on the 'altivec enable' bit so user
248 processes can execute altivec instructions.
250 This option is only usefully if you have a processor that supports
251 altivec (G4, otherwise known as 74xx series), but does not have
252 any affect on a non-altivec cpu (it does, however add code to the
255 If in doubt, say Y here.
259 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
262 This option enables kernel support for the Vector Scaler extensions
263 to the PowerPC processor. The kernel currently supports saving and
264 restoring VSX registers, and turning on the 'VSX enable' bit so user
265 processes can execute VSX instructions.
267 This option is only useful if you have a processor that supports
268 VSX (P7 and above), but does not have any affect on a non-VSX
269 CPUs (it does, however add code to the kernel).
271 If in doubt, say Y here.
274 bool "Support for PowerPC icswx coprocessor instruction"
275 depends on PPC_BOOK3S_64
279 This option enables kernel support for the PowerPC Initiate
280 Coprocessor Store Word (icswx) coprocessor instruction on POWER7
283 This option is only useful if you have a processor that supports
284 the icswx coprocessor instruction. It does not have any effect
285 on processors without the icswx coprocessor instruction.
287 This option slightly increases kernel memory usage.
289 If in doubt, say N here.
292 bool "icswx requires direct PID management"
296 The PID register in server is used explicitly for ICSWX. In
297 embedded systems PID management is done by the system.
299 config PPC_ICSWX_USE_SIGILL
300 bool "Should a bad CT cause a SIGILL?"
304 Should a bad CT used for "non-record form ICSWX" cause an
305 illegal instruction signal or should it be silent as
308 If in doubt, say N here.
312 depends on E200 || (E500 && !PPC_E500MC)
315 This option enables kernel support for the Signal Processing
316 Extensions (SPE) to the PowerPC processor. The kernel currently
317 supports saving and restoring SPE registers, and turning on the
318 'spe enable' bit so user processes can execute SPE instructions.
320 This option is only useful if you have a processor that supports
321 SPE (e500, otherwise known as 85xx series), but does not have any
322 effect on a non-spe cpu (it does, however add code to the kernel).
324 If in doubt, say Y here.
328 depends on PPC_BOOK3S
330 config PPC_STD_MMU_32
332 depends on PPC_STD_MMU && PPC32
334 config PPC_STD_MMU_64
336 depends on PPC_STD_MMU && PPC64
338 config PPC_MMU_NOHASH
340 depends on !PPC_STD_MMU
342 config PPC_BOOK3E_MMU
344 depends on FSL_BOOKE || PPC_BOOK3E
348 default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
351 config PPC_HAVE_PMU_SUPPORT
356 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
358 This enables the powerpc-specific perf_event back-end.
361 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
362 bool "Symmetric multi-processing support"
364 This enables support for systems with more than one CPU. If you have
365 a system with only one CPU, say N. If you have a system with more
366 than one CPU, say Y. Note that the kernel does not currently
367 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
368 since they have inadequate hardware support for multiprocessor
371 If you say N here, the kernel will run on single and multiprocessor
372 machines, but will use only one CPU of a multiprocessor machine. If
373 you say Y here, the kernel will run on single-processor machines.
374 On a single-processor machine, the kernel will run faster if you say
377 If you don't know what to do here, say N.
380 int "Maximum number of CPUs (2-8192)"
383 default "32" if PPC64
386 config NOT_COHERENT_CACHE
388 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
392 config CHECK_CACHE_COHERENCY
402 prompt "Endianness selection"
403 default CPU_BIG_ENDIAN
405 This option selects whether a big endian or little endian kernel will
408 config CPU_BIG_ENDIAN
409 bool "Build big endian kernel"
411 Build a big endian kernel.
413 If unsure, select this option.
415 config CPU_LITTLE_ENDIAN
416 bool "Build little endian kernel"
417 select PPC64_BOOT_WRAPPER
419 Build a little endian kernel.
421 Note that if cross compiling a little endian kernel,
422 CROSS_COMPILE must point to a toolchain capable of targeting
423 little endian powerpc.
427 config PPC64_BOOT_WRAPPER
429 depends on CPU_LITTLE_ENDIAN