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"
61 prompt "Processor Type"
64 There are two families of 64 bit PowerPC chips supported.
65 The most common ones are the desktop and server CPUs
66 (POWER3, RS64, POWER4, POWER5, POWER5+, POWER6, ...)
68 The other are the "embedded" processors compliant with the
69 "Book 3E" variant of the architecture
72 bool "Server processors"
76 bool "Embedded processors"
77 select PPC_FPU # Make it a choice ?
83 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
87 depends on PPC_BOOK3E_64
90 bool "Optimize for POWER4"
91 depends on PPC64 && PPC_BOOK3S
94 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
95 The resulting binary will not work on POWER3 or RS64 processors
96 when compiled with binutils 2.15 or later.
100 depends on PPC32 && PPC_BOOK3S
101 select PPC_HAVE_PMU_SUPPORT
105 depends on PPC64 && PPC_BOOK3S
106 default y if !POWER4_ONLY
109 depends on PPC64 && PPC_BOOK3S
113 bool "Optimize for Cell Broadband Engine"
114 depends on PPC64 && PPC_BOOK3S
116 Cause the compiler to optimize for the PPE of the Cell Broadband
117 Engine. This will make the code run considerably faster on Cell
118 but somewhat slower on other machines. This option only changes
119 the scheduling of instructions, not the selection of instructions
120 itself, so the resulting kernel will keep running on all other
121 machines. When building a kernel that is supposed to run only
122 on Cell, you should also select the POWER4_ONLY option.
124 # this is temp to handle compat with arch=ppc
129 select FSL_EMB_PERFMON
133 bool "e500mc Support"
143 depends on 40x || 44x
148 depends on E200 || E500 || 44x || PPC_BOOK3E
153 depends on E200 || E500
156 config FSL_EMB_PERFMON
157 bool "Freescale Embedded Perfmon"
158 depends on E500 || PPC_83xx
160 This is the Performance Monitor support found on the e500 core
161 and some e300 cores (c3 and c4). Select this only if your
162 core supports the Embedded Performance Monitor APU
166 depends on 44x || E500 || PPC_86xx
167 default y if PHYS_64BIT
170 bool 'Large physical address support' if E500 || PPC_86xx
171 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
173 This option enables kernel support for larger than 32-bit physical
174 addresses. This feature may not be available on all cores.
176 If you have more than 3.5GB of RAM or so, you also need to enable
177 SWIOTLB under Kernel Options for this to work. The actual number
178 is platform-dependent.
180 If in doubt, say N here.
183 bool "AltiVec Support"
184 depends on 6xx || POWER4
186 This option enables kernel support for the Altivec extensions to the
187 PowerPC processor. The kernel currently supports saving and restoring
188 altivec registers, and turning on the 'altivec enable' bit so user
189 processes can execute altivec instructions.
191 This option is only usefully if you have a processor that supports
192 altivec (G4, otherwise known as 74xx series), but does not have
193 any affect on a non-altivec cpu (it does, however add code to the
196 If in doubt, say Y here.
200 depends on POWER4 && ALTIVEC && PPC_FPU
203 This option enables kernel support for the Vector Scaler extensions
204 to the PowerPC processor. The kernel currently supports saving and
205 restoring VSX registers, and turning on the 'VSX enable' bit so user
206 processes can execute VSX instructions.
208 This option is only useful if you have a processor that supports
209 VSX (P7 and above), but does not have any affect on a non-VSX
210 CPUs (it does, however add code to the kernel).
212 If in doubt, say Y here.
216 depends on E200 || (E500 && !PPC_E500MC)
219 This option enables kernel support for the Signal Processing
220 Extensions (SPE) to the PowerPC processor. The kernel currently
221 supports saving and restoring SPE registers, and turning on the
222 'spe enable' bit so user processes can execute SPE instructions.
224 This option is only useful if you have a processor that supports
225 SPE (e500, otherwise known as 85xx series), but does not have any
226 effect on a non-spe cpu (it does, however add code to the kernel).
228 If in doubt, say Y here.
232 depends on PPC_BOOK3S
234 config PPC_STD_MMU_32
236 depends on PPC_STD_MMU && PPC32
238 config PPC_STD_MMU_64
240 depends on PPC_STD_MMU && PPC64
242 config PPC_MMU_NOHASH
244 depends on !PPC_STD_MMU
246 config PPC_MMU_NOHASH_32
248 depends on PPC_MMU_NOHASH && PPC32
250 config PPC_MMU_NOHASH_64
252 depends on PPC_MMU_NOHASH && PPC64
254 config PPC_BOOK3E_MMU
256 depends on FSL_BOOKE || PPC_BOOK3E
260 default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
263 config VIRT_CPU_ACCOUNTING
264 bool "Deterministic task and CPU time accounting"
268 Select this option to enable more accurate task and CPU time
269 accounting. This is done by reading a CPU counter on each
270 kernel entry and exit and on transitions within the kernel
271 between system, softirq and hardirq state, so there is a
272 small performance impact. This also enables accounting of
273 stolen time on logically-partitioned systems running on
274 IBM POWER5-based machines.
276 If in doubt, say Y here.
278 config PPC_HAVE_PMU_SUPPORT
283 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
285 This enables the powerpc-specific perf_event back-end.
288 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE
289 bool "Symmetric multi-processing support"
291 This enables support for systems with more than one CPU. If you have
292 a system with only one CPU, say N. If you have a system with more
293 than one CPU, say Y. Note that the kernel does not currently
294 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
295 since they have inadequate hardware support for multiprocessor
298 If you say N here, the kernel will run on single and multiprocessor
299 machines, but will use only one CPU of a multiprocessor machine. If
300 you say Y here, the kernel will run on single-processor machines.
301 On a single-processor machine, the kernel will run faster if you say
304 If you don't know what to do here, say N.
307 int "Maximum number of CPUs (2-8192)"
310 default "32" if PPC64
313 config NOT_COHERENT_CACHE
315 depends on 4xx || 8xx || E200 || PPC_MPC512x
318 config CHECK_CACHE_COHERENCY