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 embedded 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"
37 select SYS_SUPPORTS_HUGETLBFS
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
76 select ARCH_SUPPORTS_NUMA_BALANCING
81 bool "Embedded processors"
82 select PPC_FPU # Make it a choice ?
83 select PPC_SMP_MUXED_IPI
89 prompt "CPU selection"
91 default POWER8_CPU if CPU_LITTLE_ENDIAN
94 This will create a kernel which is optimised for a particular CPU.
95 The resulting kernel may not run on other CPUs, so use this with care.
97 If unsure, select Generic.
101 depends on !CPU_LITTLE_ENDIAN
104 bool "Cell Broadband Engine"
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 && !CPU_LITTLE_ENDIAN
121 depends on PPC_BOOK3S_64
122 select ARCH_HAS_FAST_MULTIPLIER
126 depends on PPC_BOOK3S_64
127 select ARCH_HAS_FAST_MULTIPLIER
130 bool "Freescale e5500"
134 bool "Freescale e6500"
141 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
145 depends on PPC_BOOK3E_64
149 depends on PPC32 && PPC_BOOK3S
150 select PPC_HAVE_PMU_SUPPORT
152 # this is temp to handle compat with arch=ppc
157 select FSL_EMB_PERFMON
158 select PPC_FSL_BOOK3E
162 bool "e500mc Support"
167 This must be enabled for running on e500mc (and derivatives
168 such as e5500/e6500), and must be disabled for running on
175 config PPC_8xx_PERF_EVENT
176 bool "PPC 8xx perf events"
177 depends on PPC_8xx && PERF_EVENTS
179 This is Performance Events support for PPC 8xx. The 8xx doesn't
180 have a PMU but some events are emulated using 8xx features.
182 config FSL_EMB_PERFMON
183 bool "Freescale Embedded Perfmon"
184 depends on E500 || PPC_83xx
186 This is the Performance Monitor support found on the e500 core
187 and some e300 cores (c3 and c4). Select this only if your
188 core supports the Embedded Performance Monitor APU
190 config FSL_EMB_PERF_EVENT
192 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
195 config FSL_EMB_PERF_EVENT_E500
197 depends on FSL_EMB_PERF_EVENT && E500
202 depends on 40x || 44x
207 depends on E200 || E500 || 44x || PPC_BOOK3E
212 depends on (E200 || E500) && PPC32
215 # this is for common code between PPC32 & PPC64 FSL BOOKE
216 config PPC_FSL_BOOK3E
218 select FSL_EMB_PERFMON
219 select PPC_SMP_MUXED_IPI
220 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
222 default y if FSL_BOOKE
226 depends on 44x || E500 || PPC_86xx
227 default y if PHYS_64BIT
230 bool 'Large physical address support' if E500 || PPC_86xx
231 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
233 This option enables kernel support for larger than 32-bit physical
234 addresses. This feature may not be available on all cores.
236 If you have more than 3.5GB of RAM or so, you also need to enable
237 SWIOTLB under Kernel Options for this to work. The actual number
238 is platform-dependent.
240 If in doubt, say N here.
243 bool "AltiVec Support"
244 depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
246 This option enables kernel support for the Altivec extensions to the
247 PowerPC processor. The kernel currently supports saving and restoring
248 altivec registers, and turning on the 'altivec enable' bit so user
249 processes can execute altivec instructions.
251 This option is only usefully if you have a processor that supports
252 altivec (G4, otherwise known as 74xx series), but does not have
253 any affect on a non-altivec cpu (it does, however add code to the
256 If in doubt, say Y here.
260 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
263 This option enables kernel support for the Vector Scaler extensions
264 to the PowerPC processor. The kernel currently supports saving and
265 restoring VSX registers, and turning on the 'VSX enable' bit so user
266 processes can execute VSX instructions.
268 This option is only useful if you have a processor that supports
269 VSX (P7 and above), but does not have any affect on a non-VSX
270 CPUs (it does, however add code to the kernel).
272 If in doubt, say Y here.
275 bool "Support for PowerPC icswx coprocessor instruction"
276 depends on PPC_BOOK3S_64
280 This option enables kernel support for the PowerPC Initiate
281 Coprocessor Store Word (icswx) coprocessor instruction on POWER7
284 This option is only useful if you have a processor that supports
285 the icswx coprocessor instruction. It does not have any effect
286 on processors without the icswx coprocessor instruction.
288 This option slightly increases kernel memory usage.
290 If in doubt, say N here.
293 bool "icswx requires direct PID management"
297 The PID register in server is used explicitly for ICSWX. In
298 embedded systems PID management is done by the system.
300 config PPC_ICSWX_USE_SIGILL
301 bool "Should a bad CT cause a SIGILL?"
305 Should a bad CT used for "non-record form ICSWX" cause an
306 illegal instruction signal or should it be silent as
309 If in doubt, say N here.
313 depends on E200 || (E500 && !PPC_E500MC)
317 depends on SPE_POSSIBLE
320 This option enables kernel support for the Signal Processing
321 Extensions (SPE) to the PowerPC processor. The kernel currently
322 supports saving and restoring SPE registers, and turning on the
323 'spe enable' bit so user processes can execute SPE instructions.
325 This option is only useful if you have a processor that supports
326 SPE (e500, otherwise known as 85xx series), but does not have any
327 effect on a non-spe cpu (it does, however add code to the kernel).
329 If in doubt, say Y here.
333 depends on PPC_BOOK3S
335 config PPC_STD_MMU_32
337 depends on PPC_STD_MMU && PPC32
339 config PPC_STD_MMU_64
341 depends on PPC_STD_MMU && PPC64
344 bool "Radix MMU Support"
345 depends on PPC_BOOK3S_64
348 Enable support for the Power ISA 3.0 Radix style MMU. Currently this
349 is only implemented by IBM Power9 CPUs, if you don't have one of them
350 you can probably disable this.
352 config PPC_MMU_NOHASH
354 depends on !PPC_STD_MMU
356 config PPC_BOOK3E_MMU
358 depends on FSL_BOOKE || PPC_BOOK3E
362 default y if PPC_STD_MMU_64
365 config PPC_HAVE_PMU_SUPPORT
370 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
372 This enables the powerpc-specific perf_event back-end.
375 # Allow platforms to force SMP=y by selecting this
381 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
382 select GENERIC_IRQ_MIGRATION
383 bool "Symmetric multi-processing support" if !FORCE_SMP
385 This enables support for systems with more than one CPU. If you have
386 a system with only one CPU, say N. If you have a system with more
387 than one CPU, say Y. Note that the kernel does not currently
388 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
389 since they have inadequate hardware support for multiprocessor
392 If you say N here, the kernel will run on single and multiprocessor
393 machines, but will use only one CPU of a multiprocessor machine. If
394 you say Y here, the kernel will run on single-processor machines.
395 On a single-processor machine, the kernel will run faster if you say
398 If you don't know what to do here, say N.
401 int "Maximum number of CPUs (2-8192)"
404 default "32" if PPC64
407 config NOT_COHERENT_CACHE
409 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
413 config CHECK_CACHE_COHERENCY
424 depends on PPC32 || CPU_BIG_ENDIAN
426 This symbol controls whether we build the 32-bit VDSO. We obviously
427 want to do that if we're building a 32-bit kernel. If we're building
428 a 64-bit kernel then we only want a 32-bit VDSO if we're building for
429 big endian. That is because the only little endian configuration we
430 support is ppc64le which is 64-bit only.
433 prompt "Endianness selection"
434 default CPU_BIG_ENDIAN
436 This option selects whether a big endian or little endian kernel will
439 config CPU_BIG_ENDIAN
440 bool "Build big endian kernel"
442 Build a big endian kernel.
444 If unsure, select this option.
446 config CPU_LITTLE_ENDIAN
447 bool "Build little endian kernel"
448 depends on PPC_BOOK3S_64
449 select PPC64_BOOT_WRAPPER
451 Build a little endian kernel.
453 Note that if cross compiling a little endian kernel,
454 CROSS_COMPILE must point to a toolchain capable of targeting
455 little endian powerpc.
459 config PPC64_BOOT_WRAPPER
461 depends on CPU_LITTLE_ENDIAN