4 select PPC_HAVE_PMU_SUPPORT
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"
74 bool "Embedded processors"
75 select PPC_FPU # Make it a choice ?
81 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
85 depends on PPC_BOOK3E_64
88 bool "Optimize for POWER4"
89 depends on PPC64 && PPC_BOOK3S
92 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
93 The resulting binary will not work on POWER3 or RS64 processors
94 when compiled with binutils 2.15 or later.
98 depends on PPC32 && PPC_BOOK3S
99 select PPC_HAVE_PMU_SUPPORT
103 depends on PPC64 && PPC_BOOK3S
104 default y if !POWER4_ONLY
107 depends on PPC64 && PPC_BOOK3S
111 bool "Optimize for Cell Broadband Engine"
112 depends on PPC64 && PPC_BOOK3S
114 Cause the compiler to optimize for the PPE of the Cell Broadband
115 Engine. This will make the code run considerably faster on Cell
116 but somewhat slower on other machines. This option only changes
117 the scheduling of instructions, not the selection of instructions
118 itself, so the resulting kernel will keep running on all other
119 machines. When building a kernel that is supposed to run only
120 on Cell, you should also select the POWER4_ONLY option.
122 # this is temp to handle compat with arch=ppc
127 select FSL_EMB_PERFMON
131 bool "e500mc Support"
139 config FSL_EMB_PERFMON
140 bool "Freescale Embedded Perfmon"
141 depends on E500 || PPC_83xx
143 This is the Performance Monitor support found on the e500 core
144 and some e300 cores (c3 and c4). Select this only if your
145 core supports the Embedded Performance Monitor APU
147 config FSL_EMB_PERF_EVENT
149 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
152 config FSL_EMB_PERF_EVENT_E500
154 depends on FSL_EMB_PERF_EVENT && E500
159 depends on 40x || 44x
164 depends on E200 || E500 || 44x || PPC_BOOK3E
169 depends on E200 || E500
175 depends on 44x || E500 || PPC_86xx
176 default y if PHYS_64BIT
179 bool 'Large physical address support' if E500 || PPC_86xx
180 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
182 This option enables kernel support for larger than 32-bit physical
183 addresses. This feature may not be available on all cores.
185 If you have more than 3.5GB of RAM or so, you also need to enable
186 SWIOTLB under Kernel Options for this to work. The actual number
187 is platform-dependent.
189 If in doubt, say N here.
192 bool "AltiVec Support"
193 depends on 6xx || POWER4
195 This option enables kernel support for the Altivec extensions to the
196 PowerPC processor. The kernel currently supports saving and restoring
197 altivec registers, and turning on the 'altivec enable' bit so user
198 processes can execute altivec instructions.
200 This option is only usefully if you have a processor that supports
201 altivec (G4, otherwise known as 74xx series), but does not have
202 any affect on a non-altivec cpu (it does, however add code to the
205 If in doubt, say Y here.
209 depends on POWER4 && ALTIVEC && PPC_FPU
212 This option enables kernel support for the Vector Scaler extensions
213 to the PowerPC processor. The kernel currently supports saving and
214 restoring VSX registers, and turning on the 'VSX enable' bit so user
215 processes can execute VSX instructions.
217 This option is only useful if you have a processor that supports
218 VSX (P7 and above), but does not have any affect on a non-VSX
219 CPUs (it does, however add code to the kernel).
221 If in doubt, say Y here.
225 depends on E200 || (E500 && !PPC_E500MC)
228 This option enables kernel support for the Signal Processing
229 Extensions (SPE) to the PowerPC processor. The kernel currently
230 supports saving and restoring SPE registers, and turning on the
231 'spe enable' bit so user processes can execute SPE instructions.
233 This option is only useful if you have a processor that supports
234 SPE (e500, otherwise known as 85xx series), but does not have any
235 effect on a non-spe cpu (it does, however add code to the kernel).
237 If in doubt, say Y here.
241 depends on PPC_BOOK3S
243 config PPC_STD_MMU_32
245 depends on PPC_STD_MMU && PPC32
247 config PPC_STD_MMU_64
249 depends on PPC_STD_MMU && PPC64
251 config PPC_MMU_NOHASH
253 depends on !PPC_STD_MMU
255 config PPC_MMU_NOHASH_32
257 depends on PPC_MMU_NOHASH && PPC32
259 config PPC_MMU_NOHASH_64
261 depends on PPC_MMU_NOHASH && PPC64
263 config PPC_BOOK3E_MMU
265 depends on FSL_BOOKE || PPC_BOOK3E
269 default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
272 config VIRT_CPU_ACCOUNTING
273 bool "Deterministic task and CPU time accounting"
277 Select this option to enable more accurate task and CPU time
278 accounting. This is done by reading a CPU counter on each
279 kernel entry and exit and on transitions within the kernel
280 between system, softirq and hardirq state, so there is a
281 small performance impact. This also enables accounting of
282 stolen time on logically-partitioned systems running on
283 IBM POWER5-based machines.
285 If in doubt, say Y here.
287 config PPC_HAVE_PMU_SUPPORT
292 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
294 This enables the powerpc-specific perf_event back-end.
297 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
298 bool "Symmetric multi-processing support"
300 This enables support for systems with more than one CPU. If you have
301 a system with only one CPU, say N. If you have a system with more
302 than one CPU, say Y. Note that the kernel does not currently
303 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
304 since they have inadequate hardware support for multiprocessor
307 If you say N here, the kernel will run on single and multiprocessor
308 machines, but will use only one CPU of a multiprocessor machine. If
309 you say Y here, the kernel will run on single-processor machines.
310 On a single-processor machine, the kernel will run faster if you say
313 If you don't know what to do here, say N.
316 int "Maximum number of CPUs (2-8192)"
319 default "32" if PPC64
322 config NOT_COHERENT_CACHE
324 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
328 config CHECK_CACHE_COHERENCY