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"
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
149 depends on 40x || 44x
154 depends on E200 || E500 || 44x || PPC_BOOK3E
159 depends on E200 || E500
165 depends on 44x || E500 || PPC_86xx
166 default y if PHYS_64BIT
169 bool 'Large physical address support' if E500 || PPC_86xx
170 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
172 This option enables kernel support for larger than 32-bit physical
173 addresses. This feature may not be available on all cores.
175 If you have more than 3.5GB of RAM or so, you also need to enable
176 SWIOTLB under Kernel Options for this to work. The actual number
177 is platform-dependent.
179 If in doubt, say N here.
182 bool "AltiVec Support"
183 depends on 6xx || POWER4
185 This option enables kernel support for the Altivec extensions to the
186 PowerPC processor. The kernel currently supports saving and restoring
187 altivec registers, and turning on the 'altivec enable' bit so user
188 processes can execute altivec instructions.
190 This option is only usefully if you have a processor that supports
191 altivec (G4, otherwise known as 74xx series), but does not have
192 any affect on a non-altivec cpu (it does, however add code to the
195 If in doubt, say Y here.
199 depends on POWER4 && ALTIVEC && PPC_FPU
202 This option enables kernel support for the Vector Scaler extensions
203 to the PowerPC processor. The kernel currently supports saving and
204 restoring VSX registers, and turning on the 'VSX enable' bit so user
205 processes can execute VSX instructions.
207 This option is only useful if you have a processor that supports
208 VSX (P7 and above), but does not have any affect on a non-VSX
209 CPUs (it does, however add code to the kernel).
211 If in doubt, say Y here.
215 depends on E200 || (E500 && !PPC_E500MC)
218 This option enables kernel support for the Signal Processing
219 Extensions (SPE) to the PowerPC processor. The kernel currently
220 supports saving and restoring SPE registers, and turning on the
221 'spe enable' bit so user processes can execute SPE instructions.
223 This option is only useful if you have a processor that supports
224 SPE (e500, otherwise known as 85xx series), but does not have any
225 effect on a non-spe cpu (it does, however add code to the kernel).
227 If in doubt, say Y here.
231 depends on PPC_BOOK3S
233 config PPC_STD_MMU_32
235 depends on PPC_STD_MMU && PPC32
237 config PPC_STD_MMU_64
239 depends on PPC_STD_MMU && PPC64
241 config PPC_MMU_NOHASH
243 depends on !PPC_STD_MMU
245 config PPC_MMU_NOHASH_32
247 depends on PPC_MMU_NOHASH && PPC32
249 config PPC_MMU_NOHASH_64
251 depends on PPC_MMU_NOHASH && PPC64
253 config PPC_BOOK3E_MMU
255 depends on FSL_BOOKE || PPC_BOOK3E
259 default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
262 config VIRT_CPU_ACCOUNTING
263 bool "Deterministic task and CPU time accounting"
267 Select this option to enable more accurate task and CPU time
268 accounting. This is done by reading a CPU counter on each
269 kernel entry and exit and on transitions within the kernel
270 between system, softirq and hardirq state, so there is a
271 small performance impact. This also enables accounting of
272 stolen time on logically-partitioned systems running on
273 IBM POWER5-based machines.
275 If in doubt, say Y here.
277 config PPC_HAVE_PMU_SUPPORT
282 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
284 This enables the powerpc-specific perf_event back-end.
287 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE
288 bool "Symmetric multi-processing support"
290 This enables support for systems with more than one CPU. If you have
291 a system with only one CPU, say N. If you have a system with more
292 than one CPU, say Y. Note that the kernel does not currently
293 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
294 since they have inadequate hardware support for multiprocessor
297 If you say N here, the kernel will run on single and multiprocessor
298 machines, but will use only one CPU of a multiprocessor machine. If
299 you say Y here, the kernel will run on single-processor machines.
300 On a single-processor machine, the kernel will run faster if you say
303 If you don't know what to do here, say N.
306 int "Maximum number of CPUs (2-8192)"
309 default "32" if PPC64
312 config NOT_COHERENT_CACHE
314 depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
317 config CHECK_CACHE_COHERENCY