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 (POWER3, RS64, POWER4, POWER5, POWER5+, POWER6, ...)
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
78 bool "Embedded processors"
79 select PPC_FPU # Make it a choice ?
80 select PPC_SMP_MUXED_IPI
86 prompt "CPU selection"
90 This will create a kernel which is optimised for a particular CPU.
91 The resulting kernel may not run on other CPUs, so use this with care.
93 If unsure, select Generic.
97 depends on !CPU_LITTLE_ENDIAN
100 bool "Cell Broadband Engine"
101 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
105 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
109 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
113 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
117 depends on PPC_BOOK3S_64
120 bool "Freescale e5500"
124 bool "Freescale e6500"
131 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
135 depends on PPC_BOOK3E_64
139 depends on PPC32 && PPC_BOOK3S
140 select PPC_HAVE_PMU_SUPPORT
143 depends on PPC64 && PPC_BOOK3S
147 depends on PPC64 && PPC_BOOK3S
152 depends on PPC_BOOK3E_64
155 bool "Optimize for Cell Broadband Engine"
156 depends on PPC64 && PPC_BOOK3S
158 Cause the compiler to optimize for the PPE of the Cell Broadband
159 Engine. This will make the code run considerably faster on Cell
160 but somewhat slower on other machines. This option only changes
161 the scheduling of instructions, not the selection of instructions
162 itself, so the resulting kernel will keep running on all other
165 # this is temp to handle compat with arch=ppc
170 select FSL_EMB_PERFMON
171 select PPC_FSL_BOOK3E
175 bool "e500mc Support"
180 This must be enabled for running on e500mc (and derivatives
181 such as e5500/e6500), and must be disabled for running on
188 config FSL_EMB_PERFMON
189 bool "Freescale Embedded Perfmon"
190 depends on E500 || PPC_83xx
192 This is the Performance Monitor support found on the e500 core
193 and some e300 cores (c3 and c4). Select this only if your
194 core supports the Embedded Performance Monitor APU
196 config FSL_EMB_PERF_EVENT
198 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
201 config FSL_EMB_PERF_EVENT_E500
203 depends on FSL_EMB_PERF_EVENT && E500
208 depends on 40x || 44x
213 depends on E200 || E500 || 44x || PPC_BOOK3E
218 depends on (E200 || E500) && PPC32
221 # this is for common code between PPC32 & PPC64 FSL BOOKE
222 config PPC_FSL_BOOK3E
224 select FSL_EMB_PERFMON
225 select PPC_SMP_MUXED_IPI
226 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
228 default y if FSL_BOOKE
232 depends on 44x || E500 || PPC_86xx
233 default y if PHYS_64BIT
236 bool 'Large physical address support' if E500 || PPC_86xx
237 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
239 This option enables kernel support for larger than 32-bit physical
240 addresses. This feature may not be available on all cores.
242 If you have more than 3.5GB of RAM or so, you also need to enable
243 SWIOTLB under Kernel Options for this to work. The actual number
244 is platform-dependent.
246 If in doubt, say N here.
249 bool "AltiVec Support"
250 depends on 6xx || POWER4 || (PPC_E500MC && PPC64)
252 This option enables kernel support for the Altivec extensions to the
253 PowerPC processor. The kernel currently supports saving and restoring
254 altivec registers, and turning on the 'altivec enable' bit so user
255 processes can execute altivec instructions.
257 This option is only usefully if you have a processor that supports
258 altivec (G4, otherwise known as 74xx series), but does not have
259 any affect on a non-altivec cpu (it does, however add code to the
262 If in doubt, say Y here.
266 depends on POWER4 && ALTIVEC && PPC_FPU
269 This option enables kernel support for the Vector Scaler extensions
270 to the PowerPC processor. The kernel currently supports saving and
271 restoring VSX registers, and turning on the 'VSX enable' bit so user
272 processes can execute VSX instructions.
274 This option is only useful if you have a processor that supports
275 VSX (P7 and above), but does not have any affect on a non-VSX
276 CPUs (it does, however add code to the kernel).
278 If in doubt, say Y here.
281 bool "Support for PowerPC icswx coprocessor instruction"
282 depends on POWER4 || PPC_A2
286 This option enables kernel support for the PowerPC Initiate
287 Coprocessor Store Word (icswx) coprocessor instruction on POWER7
290 This option is only useful if you have a processor that supports
291 the icswx coprocessor instruction. It does not have any effect
292 on processors without the icswx coprocessor instruction.
294 This option slightly increases kernel memory usage.
296 If in doubt, say N here.
299 bool "icswx requires direct PID management"
300 depends on PPC_ICSWX && POWER4
303 The PID register in server is used explicitly for ICSWX. In
304 embedded systems PID management is done by the system.
306 config PPC_ICSWX_USE_SIGILL
307 bool "Should a bad CT cause a SIGILL?"
311 Should a bad CT used for "non-record form ICSWX" cause an
312 illegal instruction signal or should it be silent as
315 If in doubt, say N here.
319 depends on E200 || (E500 && !PPC_E500MC)
322 This option enables kernel support for the Signal Processing
323 Extensions (SPE) to the PowerPC processor. The kernel currently
324 supports saving and restoring SPE registers, and turning on the
325 'spe enable' bit so user processes can execute SPE instructions.
327 This option is only useful if you have a processor that supports
328 SPE (e500, otherwise known as 85xx series), but does not have any
329 effect on a non-spe cpu (it does, however add code to the kernel).
331 If in doubt, say Y here.
335 depends on PPC_BOOK3S
337 config PPC_STD_MMU_32
339 depends on PPC_STD_MMU && PPC32
341 config PPC_STD_MMU_64
343 depends on PPC_STD_MMU && PPC64
345 config PPC_MMU_NOHASH
347 depends on !PPC_STD_MMU
349 config PPC_BOOK3E_MMU
351 depends on FSL_BOOKE || PPC_BOOK3E
355 default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
358 config PPC_HAVE_PMU_SUPPORT
363 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
365 This enables the powerpc-specific perf_event back-end.
368 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
369 bool "Symmetric multi-processing support"
371 This enables support for systems with more than one CPU. If you have
372 a system with only one CPU, say N. If you have a system with more
373 than one CPU, say Y. Note that the kernel does not currently
374 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
375 since they have inadequate hardware support for multiprocessor
378 If you say N here, the kernel will run on single and multiprocessor
379 machines, but will use only one CPU of a multiprocessor machine. If
380 you say Y here, the kernel will run on single-processor machines.
381 On a single-processor machine, the kernel will run faster if you say
384 If you don't know what to do here, say N.
387 int "Maximum number of CPUs (2-8192)"
390 default "32" if PPC64
393 config NOT_COHERENT_CACHE
395 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
399 config CHECK_CACHE_COHERENCY
409 prompt "Endianness selection"
410 default CPU_BIG_ENDIAN
412 This option selects whether a big endian or little endian kernel will
415 config CPU_BIG_ENDIAN
416 bool "Build big endian kernel"
418 Build a big endian kernel.
420 If unsure, select this option.
422 config CPU_LITTLE_ENDIAN
423 bool "Build little endian kernel"
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.