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
128 select PPC_FSL_BOOK3E
132 bool "e500mc Support"
140 config FSL_EMB_PERFMON
141 bool "Freescale Embedded Perfmon"
142 depends on E500 || PPC_83xx
144 This is the Performance Monitor support found on the e500 core
145 and some e300 cores (c3 and c4). Select this only if your
146 core supports the Embedded Performance Monitor APU
148 config FSL_EMB_PERF_EVENT
150 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
153 config FSL_EMB_PERF_EVENT_E500
155 depends on FSL_EMB_PERF_EVENT && E500
160 depends on 40x || 44x
165 depends on E200 || E500 || 44x || PPC_BOOK3E
170 depends on (E200 || E500) && PPC32
173 # this is for common code between PPC32 & PPC64 FSL BOOKE
174 config PPC_FSL_BOOK3E
176 select FSL_EMB_PERFMON
177 default y if FSL_BOOKE
181 depends on 44x || E500 || PPC_86xx
182 default y if PHYS_64BIT
185 bool 'Large physical address support' if E500 || PPC_86xx
186 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
188 This option enables kernel support for larger than 32-bit physical
189 addresses. This feature may not be available on all cores.
191 If you have more than 3.5GB of RAM or so, you also need to enable
192 SWIOTLB under Kernel Options for this to work. The actual number
193 is platform-dependent.
195 If in doubt, say N here.
198 bool "AltiVec Support"
199 depends on 6xx || POWER4
201 This option enables kernel support for the Altivec extensions to the
202 PowerPC processor. The kernel currently supports saving and restoring
203 altivec registers, and turning on the 'altivec enable' bit so user
204 processes can execute altivec instructions.
206 This option is only usefully if you have a processor that supports
207 altivec (G4, otherwise known as 74xx series), but does not have
208 any affect on a non-altivec cpu (it does, however add code to the
211 If in doubt, say Y here.
215 depends on POWER4 && ALTIVEC && PPC_FPU
218 This option enables kernel support for the Vector Scaler extensions
219 to the PowerPC processor. The kernel currently supports saving and
220 restoring VSX registers, and turning on the 'VSX enable' bit so user
221 processes can execute VSX instructions.
223 This option is only useful if you have a processor that supports
224 VSX (P7 and above), but does not have any affect on a non-VSX
225 CPUs (it does, however add code to the kernel).
227 If in doubt, say Y here.
231 depends on E200 || (E500 && !PPC_E500MC)
234 This option enables kernel support for the Signal Processing
235 Extensions (SPE) to the PowerPC processor. The kernel currently
236 supports saving and restoring SPE registers, and turning on the
237 'spe enable' bit so user processes can execute SPE instructions.
239 This option is only useful if you have a processor that supports
240 SPE (e500, otherwise known as 85xx series), but does not have any
241 effect on a non-spe cpu (it does, however add code to the kernel).
243 If in doubt, say Y here.
247 depends on PPC_BOOK3S
249 config PPC_STD_MMU_32
251 depends on PPC_STD_MMU && PPC32
253 config PPC_STD_MMU_64
255 depends on PPC_STD_MMU && PPC64
257 config PPC_MMU_NOHASH
259 depends on !PPC_STD_MMU
261 config PPC_MMU_NOHASH_32
263 depends on PPC_MMU_NOHASH && PPC32
265 config PPC_MMU_NOHASH_64
267 depends on PPC_MMU_NOHASH && PPC64
269 config PPC_BOOK3E_MMU
271 depends on FSL_BOOKE || PPC_BOOK3E
275 default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
278 config VIRT_CPU_ACCOUNTING
279 bool "Deterministic task and CPU time accounting"
283 Select this option to enable more accurate task and CPU time
284 accounting. This is done by reading a CPU counter on each
285 kernel entry and exit and on transitions within the kernel
286 between system, softirq and hardirq state, so there is a
287 small performance impact. This also enables accounting of
288 stolen time on logically-partitioned systems running on
289 IBM POWER5-based machines.
291 If in doubt, say Y here.
293 config PPC_HAVE_PMU_SUPPORT
298 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
300 This enables the powerpc-specific perf_event back-end.
303 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
304 bool "Symmetric multi-processing support"
306 This enables support for systems with more than one CPU. If you have
307 a system with only one CPU, say N. If you have a system with more
308 than one CPU, say Y. Note that the kernel does not currently
309 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
310 since they have inadequate hardware support for multiprocessor
313 If you say N here, the kernel will run on single and multiprocessor
314 machines, but will use only one CPU of a multiprocessor machine. If
315 you say Y here, the kernel will run on single-processor machines.
316 On a single-processor machine, the kernel will run faster if you say
319 If you don't know what to do here, say N.
322 int "Maximum number of CPUs (2-8192)"
325 default "32" if PPC64
328 config NOT_COHERENT_CACHE
330 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
334 config CHECK_CACHE_COHERENCY