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
121 bool "Freescale e5500"
125 bool "Freescale e6500"
132 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
136 depends on PPC_BOOK3E_64
140 depends on PPC32 && PPC_BOOK3S
141 select PPC_HAVE_PMU_SUPPORT
144 bool "Optimize for Cell Broadband Engine"
145 depends on PPC64 && PPC_BOOK3S
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
154 # this is temp to handle compat with arch=ppc
159 select FSL_EMB_PERFMON
160 select PPC_FSL_BOOK3E
164 bool "e500mc Support"
169 This must be enabled for running on e500mc (and derivatives
170 such as e5500/e6500), and must be disabled for running on
177 config FSL_EMB_PERFMON
178 bool "Freescale Embedded Perfmon"
179 depends on E500 || PPC_83xx
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
185 config FSL_EMB_PERF_EVENT
187 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
190 config FSL_EMB_PERF_EVENT_E500
192 depends on FSL_EMB_PERF_EVENT && E500
197 depends on 40x || 44x
202 depends on E200 || E500 || 44x || PPC_BOOK3E
207 depends on (E200 || E500) && PPC32
210 # this is for common code between PPC32 & PPC64 FSL BOOKE
211 config PPC_FSL_BOOK3E
213 select FSL_EMB_PERFMON
214 select PPC_SMP_MUXED_IPI
215 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
217 default y if FSL_BOOKE
221 depends on 44x || E500 || PPC_86xx
222 default y if PHYS_64BIT
225 bool 'Large physical address support' if E500 || PPC_86xx
226 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
228 This option enables kernel support for larger than 32-bit physical
229 addresses. This feature may not be available on all cores.
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.
235 If in doubt, say N here.
238 bool "AltiVec Support"
239 depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
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.
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
251 If in doubt, say Y here.
255 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
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.
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).
267 If in doubt, say Y here.
270 bool "Support for PowerPC icswx coprocessor instruction"
271 depends on PPC_BOOK3S_64
275 This option enables kernel support for the PowerPC Initiate
276 Coprocessor Store Word (icswx) coprocessor instruction on POWER7
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.
283 This option slightly increases kernel memory usage.
285 If in doubt, say N here.
288 bool "icswx requires direct PID management"
292 The PID register in server is used explicitly for ICSWX. In
293 embedded systems PID management is done by the system.
295 config PPC_ICSWX_USE_SIGILL
296 bool "Should a bad CT cause a SIGILL?"
300 Should a bad CT used for "non-record form ICSWX" cause an
301 illegal instruction signal or should it be silent as
304 If in doubt, say N here.
308 depends on E200 || (E500 && !PPC_E500MC)
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
398 prompt "Endianness selection"
399 default CPU_BIG_ENDIAN
401 This option selects whether a big endian or little endian kernel will
404 config CPU_BIG_ENDIAN
405 bool "Build big endian kernel"
407 Build a big endian kernel.
409 If unsure, select this option.
411 config CPU_LITTLE_ENDIAN
412 bool "Build little endian kernel"
413 select PPC64_BOOT_WRAPPER
415 Build a little endian kernel.
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.
423 config PPC64_BOOT_WRAPPER
425 depends on CPU_LITTLE_ENDIAN