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
119 select ARCH_HAS_FAST_MULTIPLIER
123 depends on PPC_BOOK3S_64
124 select ARCH_HAS_FAST_MULTIPLIER
127 bool "Freescale e5500"
131 bool "Freescale e6500"
138 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
142 depends on PPC_BOOK3E_64
146 depends on PPC32 && PPC_BOOK3S
147 select PPC_HAVE_PMU_SUPPORT
150 bool "Optimize for Cell Broadband Engine"
151 depends on PPC64 && PPC_BOOK3S
153 Cause the compiler to optimize for the PPE of the Cell Broadband
154 Engine. This will make the code run considerably faster on Cell
155 but somewhat slower on other machines. This option only changes
156 the scheduling of instructions, not the selection of instructions
157 itself, so the resulting kernel will keep running on all other
160 # this is temp to handle compat with arch=ppc
165 select FSL_EMB_PERFMON
166 select PPC_FSL_BOOK3E
170 bool "e500mc Support"
175 This must be enabled for running on e500mc (and derivatives
176 such as e5500/e6500), and must be disabled for running on
183 config FSL_EMB_PERFMON
184 bool "Freescale Embedded Perfmon"
185 depends on E500 || PPC_83xx
187 This is the Performance Monitor support found on the e500 core
188 and some e300 cores (c3 and c4). Select this only if your
189 core supports the Embedded Performance Monitor APU
191 config FSL_EMB_PERF_EVENT
193 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
196 config FSL_EMB_PERF_EVENT_E500
198 depends on FSL_EMB_PERF_EVENT && E500
203 depends on 40x || 44x
208 depends on E200 || E500 || 44x || PPC_BOOK3E
213 depends on (E200 || E500) && PPC32
216 # this is for common code between PPC32 & PPC64 FSL BOOKE
217 config PPC_FSL_BOOK3E
219 select FSL_EMB_PERFMON
220 select PPC_SMP_MUXED_IPI
221 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
223 default y if FSL_BOOKE
227 depends on 44x || E500 || PPC_86xx
228 default y if PHYS_64BIT
231 bool 'Large physical address support' if E500 || PPC_86xx
232 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
234 This option enables kernel support for larger than 32-bit physical
235 addresses. This feature may not be available on all cores.
237 If you have more than 3.5GB of RAM or so, you also need to enable
238 SWIOTLB under Kernel Options for this to work. The actual number
239 is platform-dependent.
241 If in doubt, say N here.
244 bool "AltiVec Support"
245 depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
247 This option enables kernel support for the Altivec extensions to the
248 PowerPC processor. The kernel currently supports saving and restoring
249 altivec registers, and turning on the 'altivec enable' bit so user
250 processes can execute altivec instructions.
252 This option is only usefully if you have a processor that supports
253 altivec (G4, otherwise known as 74xx series), but does not have
254 any affect on a non-altivec cpu (it does, however add code to the
257 If in doubt, say Y here.
261 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
264 This option enables kernel support for the Vector Scaler extensions
265 to the PowerPC processor. The kernel currently supports saving and
266 restoring VSX registers, and turning on the 'VSX enable' bit so user
267 processes can execute VSX instructions.
269 This option is only useful if you have a processor that supports
270 VSX (P7 and above), but does not have any affect on a non-VSX
271 CPUs (it does, however add code to the kernel).
273 If in doubt, say Y here.
276 bool "Support for PowerPC icswx coprocessor instruction"
277 depends on PPC_BOOK3S_64
281 This option enables kernel support for the PowerPC Initiate
282 Coprocessor Store Word (icswx) coprocessor instruction on POWER7
285 This option is only useful if you have a processor that supports
286 the icswx coprocessor instruction. It does not have any effect
287 on processors without the icswx coprocessor instruction.
289 This option slightly increases kernel memory usage.
291 If in doubt, say N here.
294 bool "icswx requires direct PID management"
298 The PID register in server is used explicitly for ICSWX. In
299 embedded systems PID management is done by the system.
301 config PPC_ICSWX_USE_SIGILL
302 bool "Should a bad CT cause a SIGILL?"
306 Should a bad CT used for "non-record form ICSWX" cause an
307 illegal instruction signal or should it be silent as
310 If in doubt, say N here.
314 depends on E200 || (E500 && !PPC_E500MC)
318 depends on SPE_POSSIBLE
321 This option enables kernel support for the Signal Processing
322 Extensions (SPE) to the PowerPC processor. The kernel currently
323 supports saving and restoring SPE registers, and turning on the
324 'spe enable' bit so user processes can execute SPE instructions.
326 This option is only useful if you have a processor that supports
327 SPE (e500, otherwise known as 85xx series), but does not have any
328 effect on a non-spe cpu (it does, however add code to the kernel).
330 If in doubt, say Y here.
334 depends on PPC_BOOK3S
336 config PPC_STD_MMU_32
338 depends on PPC_STD_MMU && PPC32
340 config PPC_STD_MMU_64
342 depends on PPC_STD_MMU && PPC64
344 config PPC_MMU_NOHASH
346 depends on !PPC_STD_MMU
348 config PPC_BOOK3E_MMU
350 depends on FSL_BOOKE || PPC_BOOK3E
354 default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
357 config PPC_HAVE_PMU_SUPPORT
362 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
364 This enables the powerpc-specific perf_event back-end.
367 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
368 bool "Symmetric multi-processing support"
370 This enables support for systems with more than one CPU. If you have
371 a system with only one CPU, say N. If you have a system with more
372 than one CPU, say Y. Note that the kernel does not currently
373 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
374 since they have inadequate hardware support for multiprocessor
377 If you say N here, the kernel will run on single and multiprocessor
378 machines, but will use only one CPU of a multiprocessor machine. If
379 you say Y here, the kernel will run on single-processor machines.
380 On a single-processor machine, the kernel will run faster if you say
383 If you don't know what to do here, say N.
386 int "Maximum number of CPUs (2-8192)"
389 default "32" if PPC64
392 config NOT_COHERENT_CACHE
394 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
398 config CHECK_CACHE_COHERENCY
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 select PPC64_BOOT_WRAPPER
425 Build a little endian kernel.
427 Note that if cross compiling a little endian kernel,
428 CROSS_COMPILE must point to a toolchain capable of targeting
429 little endian powerpc.
433 config PPC64_BOOT_WRAPPER
435 depends on CPU_LITTLE_ENDIAN