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"
67 bool "Optimize for POWER4"
68 depends on PPC64 && PPC_BOOK3S
71 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
72 The resulting binary will not work on POWER3 or RS64 processors
73 when compiled with binutils 2.15 or later.
77 depends on PPC32 && PPC_BOOK3S
78 select PPC_HAVE_PMU_SUPPORT
82 depends on PPC64 && PPC_BOOK3S
83 default y if !POWER4_ONLY
86 depends on PPC64 && PPC_BOOK3S
90 bool "Optimize for Cell Broadband Engine"
91 depends on PPC64 && PPC_BOOK3S
93 Cause the compiler to optimize for the PPE of the Cell Broadband
94 Engine. This will make the code run considerably faster on Cell
95 but somewhat slower on other machines. This option only changes
96 the scheduling of instructions, not the selection of instructions
97 itself, so the resulting kernel will keep running on all other
98 machines. When building a kernel that is supposed to run only
99 on Cell, you should also select the POWER4_ONLY option.
101 # this is temp to handle compat with arch=ppc
106 select FSL_EMB_PERFMON
110 bool "e500mc Support"
120 depends on 40x || 44x
125 depends on E200 || E500 || 44x
130 depends on E200 || E500
133 config FSL_EMB_PERFMON
134 bool "Freescale Embedded Perfmon"
135 depends on E500 || PPC_83xx
137 This is the Performance Monitor support found on the e500 core
138 and some e300 cores (c3 and c4). Select this only if your
139 core supports the Embedded Performance Monitor APU
143 depends on 44x || E500 || PPC_86xx
144 default y if PHYS_64BIT
147 bool 'Large physical address support' if E500 || PPC_86xx
148 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
150 This option enables kernel support for larger than 32-bit physical
151 addresses. This feature may not be available on all cores.
153 If you have more than 3.5GB of RAM or so, you also need to enable
154 SWIOTLB under Kernel Options for this to work. The actual number
155 is platform-dependent.
157 If in doubt, say N here.
160 bool "AltiVec Support"
161 depends on 6xx || POWER4
163 This option enables kernel support for the Altivec extensions to the
164 PowerPC processor. The kernel currently supports saving and restoring
165 altivec registers, and turning on the 'altivec enable' bit so user
166 processes can execute altivec instructions.
168 This option is only usefully if you have a processor that supports
169 altivec (G4, otherwise known as 74xx series), but does not have
170 any affect on a non-altivec cpu (it does, however add code to the
173 If in doubt, say Y here.
177 depends on POWER4 && ALTIVEC && PPC_FPU
180 This option enables kernel support for the Vector Scaler extensions
181 to the PowerPC processor. The kernel currently supports saving and
182 restoring VSX registers, and turning on the 'VSX enable' bit so user
183 processes can execute VSX instructions.
185 This option is only useful if you have a processor that supports
186 VSX (P7 and above), but does not have any affect on a non-VSX
187 CPUs (it does, however add code to the kernel).
189 If in doubt, say Y here.
193 depends on E200 || (E500 && !PPC_E500MC)
196 This option enables kernel support for the Signal Processing
197 Extensions (SPE) to the PowerPC processor. The kernel currently
198 supports saving and restoring SPE registers, and turning on the
199 'spe enable' bit so user processes can execute SPE instructions.
201 This option is only useful if you have a processor that supports
202 SPE (e500, otherwise known as 85xx series), but does not have any
203 effect on a non-spe cpu (it does, however add code to the kernel).
205 If in doubt, say Y here.
209 depends on PPC_BOOK3S
211 config PPC_STD_MMU_32
213 depends on PPC_STD_MMU && PPC32
215 config PPC_STD_MMU_64
217 depends on PPC_STD_MMU && PPC64
219 config PPC_MMU_NOHASH
221 depends on !PPC_STD_MMU
223 config PPC_BOOK3E_MMU
229 default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
232 config VIRT_CPU_ACCOUNTING
233 bool "Deterministic task and CPU time accounting"
237 Select this option to enable more accurate task and CPU time
238 accounting. This is done by reading a CPU counter on each
239 kernel entry and exit and on transitions within the kernel
240 between system, softirq and hardirq state, so there is a
241 small performance impact. This also enables accounting of
242 stolen time on logically-partitioned systems running on
243 IBM POWER5-based machines.
245 If in doubt, say Y here.
247 config PPC_HAVE_PMU_SUPPORT
252 depends on PERF_COUNTERS && PPC_HAVE_PMU_SUPPORT
254 This enables the powerpc-specific perf_counter back-end.
257 depends on PPC_STD_MMU || FSL_BOOKE
258 bool "Symmetric multi-processing support"
260 This enables support for systems with more than one CPU. If you have
261 a system with only one CPU, say N. If you have a system with more
262 than one CPU, say Y. Note that the kernel does not currently
263 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
264 since they have inadequate hardware support for multiprocessor
267 If you say N here, the kernel will run on single and multiprocessor
268 machines, but will use only one CPU of a multiprocessor machine. If
269 you say Y here, the kernel will run on single-processor machines.
270 On a single-processor machine, the kernel will run faster if you say
273 If you don't know what to do here, say N.
276 int "Maximum number of CPUs (2-8192)"
279 default "32" if PPC64
282 config NOT_COHERENT_CACHE
284 depends on 4xx || 8xx || E200 || PPC_MPC512x
287 config CHECK_CACHE_COHERENCY