4 select HAVE_VIRT_CPU_ACCOUNTING
7 This option selects whether a 32-bit or a 64-bit kernel
10 menu "Processor support"
12 prompt "Processor Type"
15 There are five families of 32 bit PowerPC chips supported.
16 The most common ones are the desktop and server CPUs (601, 603,
17 604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
18 embedded 512x/52xx/82xx/83xx/86xx counterparts.
19 The other embedded parts, namely 4xx, 8xx, e200 (55xx) and e500
20 (85xx) each form a family of their own that is not compatible
23 If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
26 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
47 bool "AMCC 44x, 46x or 47x"
60 prompt "Processor Type"
63 There are two families of 64 bit PowerPC chips supported.
64 The most common ones are the desktop and server CPUs
65 (POWER4, POWER5, 970, POWER5+, POWER6, POWER7, POWER8 ...)
67 The other are the "embedded" processors compliant with the
68 "Book 3E" variant of the architecture
71 bool "Server processors"
73 select PPC_HAVE_PMU_SUPPORT
74 select SYS_SUPPORTS_HUGETLBFS
75 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if PPC_64K_PAGES
76 select ARCH_SUPPORTS_NUMA_BALANCING
80 bool "Embedded processors"
81 select PPC_FPU # Make it a choice ?
82 select PPC_SMP_MUXED_IPI
88 prompt "CPU selection"
92 This will create a kernel which is optimised for a particular CPU.
93 The resulting kernel may not run on other CPUs, so use this with care.
95 If unsure, select Generic.
99 depends on !CPU_LITTLE_ENDIAN
102 bool "Cell Broadband Engine"
103 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
107 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
111 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
115 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
119 depends on PPC_BOOK3S_64
120 select ARCH_HAS_FAST_MULTIPLIER
124 depends on PPC_BOOK3S_64
125 select ARCH_HAS_FAST_MULTIPLIER
128 bool "Freescale e5500"
132 bool "Freescale e6500"
139 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
143 depends on PPC_BOOK3E_64
147 depends on PPC32 && PPC_BOOK3S
148 select PPC_HAVE_PMU_SUPPORT
150 # this is temp to handle compat with arch=ppc
155 select FSL_EMB_PERFMON
156 select PPC_FSL_BOOK3E
160 bool "e500mc Support"
165 This must be enabled for running on e500mc (and derivatives
166 such as e5500/e6500), and must be disabled for running on
173 config FSL_EMB_PERFMON
174 bool "Freescale Embedded Perfmon"
175 depends on E500 || PPC_83xx
177 This is the Performance Monitor support found on the e500 core
178 and some e300 cores (c3 and c4). Select this only if your
179 core supports the Embedded Performance Monitor APU
181 config FSL_EMB_PERF_EVENT
183 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
186 config FSL_EMB_PERF_EVENT_E500
188 depends on FSL_EMB_PERF_EVENT && E500
193 depends on 40x || 44x
198 depends on E200 || E500 || 44x || PPC_BOOK3E
203 depends on (E200 || E500) && PPC32
206 # this is for common code between PPC32 & PPC64 FSL BOOKE
207 config PPC_FSL_BOOK3E
209 select FSL_EMB_PERFMON
210 select PPC_SMP_MUXED_IPI
211 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
213 default y if FSL_BOOKE
217 depends on 44x || E500 || PPC_86xx
218 default y if PHYS_64BIT
221 bool 'Large physical address support' if E500 || PPC_86xx
222 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
224 This option enables kernel support for larger than 32-bit physical
225 addresses. This feature may not be available on all cores.
227 If you have more than 3.5GB of RAM or so, you also need to enable
228 SWIOTLB under Kernel Options for this to work. The actual number
229 is platform-dependent.
231 If in doubt, say N here.
234 bool "AltiVec Support"
235 depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
237 This option enables kernel support for the Altivec extensions to the
238 PowerPC processor. The kernel currently supports saving and restoring
239 altivec registers, and turning on the 'altivec enable' bit so user
240 processes can execute altivec instructions.
242 This option is only usefully if you have a processor that supports
243 altivec (G4, otherwise known as 74xx series), but does not have
244 any affect on a non-altivec cpu (it does, however add code to the
247 If in doubt, say Y here.
251 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
254 This option enables kernel support for the Vector Scaler extensions
255 to the PowerPC processor. The kernel currently supports saving and
256 restoring VSX registers, and turning on the 'VSX enable' bit so user
257 processes can execute VSX instructions.
259 This option is only useful if you have a processor that supports
260 VSX (P7 and above), but does not have any affect on a non-VSX
261 CPUs (it does, however add code to the kernel).
263 If in doubt, say Y here.
266 bool "Support for PowerPC icswx coprocessor instruction"
267 depends on PPC_BOOK3S_64
271 This option enables kernel support for the PowerPC Initiate
272 Coprocessor Store Word (icswx) coprocessor instruction on POWER7
275 This option is only useful if you have a processor that supports
276 the icswx coprocessor instruction. It does not have any effect
277 on processors without the icswx coprocessor instruction.
279 This option slightly increases kernel memory usage.
281 If in doubt, say N here.
284 bool "icswx requires direct PID management"
288 The PID register in server is used explicitly for ICSWX. In
289 embedded systems PID management is done by the system.
291 config PPC_ICSWX_USE_SIGILL
292 bool "Should a bad CT cause a SIGILL?"
296 Should a bad CT used for "non-record form ICSWX" cause an
297 illegal instruction signal or should it be silent as
300 If in doubt, say N here.
304 depends on E200 || (E500 && !PPC_E500MC)
308 depends on SPE_POSSIBLE
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.
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).
320 If in doubt, say Y here.
324 depends on PPC_BOOK3S
326 config PPC_STD_MMU_32
328 depends on PPC_STD_MMU && PPC32
330 config PPC_STD_MMU_64
332 depends on PPC_STD_MMU && PPC64
334 config PPC_MMU_NOHASH
336 depends on !PPC_STD_MMU
338 config PPC_BOOK3E_MMU
340 depends on FSL_BOOKE || PPC_BOOK3E
344 default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
347 config PPC_HAVE_PMU_SUPPORT
352 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
354 This enables the powerpc-specific perf_event back-end.
357 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
358 bool "Symmetric multi-processing support"
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
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
373 If you don't know what to do here, say N.
376 int "Maximum number of CPUs (2-8192)"
379 default "32" if PPC64
382 config NOT_COHERENT_CACHE
384 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
388 config CHECK_CACHE_COHERENCY
399 depends on PPC32 || CPU_BIG_ENDIAN
401 This symbol controls whether we build the 32-bit VDSO. We obviously
402 want to do that if we're building a 32-bit kernel. If we're building
403 a 64-bit kernel then we only want a 32-bit VDSO if we're building for
404 big endian. That is because the only little endian configuration we
405 support is ppc64le which is 64-bit only.
408 prompt "Endianness selection"
409 default CPU_BIG_ENDIAN
411 This option selects whether a big endian or little endian kernel will
414 config CPU_BIG_ENDIAN
415 bool "Build big endian kernel"
417 Build a big endian kernel.
419 If unsure, select this option.
421 config CPU_LITTLE_ENDIAN
422 bool "Build little endian kernel"
423 depends on PPC_BOOK3S_64
424 select PPC64_BOOT_WRAPPER
426 Build a little endian kernel.
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.
434 config PPC64_BOOT_WRAPPER
436 depends on CPU_LITTLE_ENDIAN