1config PPC64 2 bool "64-bit kernel" 3 default n 4 help 5 This option selects whether a 32-bit or a 64-bit kernel 6 will be built. 7 8menu "Processor support" 9choice 10 prompt "Processor Type" 11 depends on PPC32 12 default 6xx 13 help 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 20 with the others. 21 22 If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. 23 24config 6xx 25 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" 26 select PPC_FPU 27 28config PPC_85xx 29 bool "Freescale 85xx" 30 select E500 31 select FSL_SOC 32 select MPC85xx 33 34config PPC_8xx 35 bool "Freescale 8xx" 36 select FSL_SOC 37 select 8xx 38 select PPC_LIB_RHEAP 39 40config 40x 41 bool "AMCC 40x" 42 select PPC_DCR_NATIVE 43 select PPC_UDBG_16550 44 select 4xx_SOC 45 select PPC_PCI_CHOICE 46 47config 44x 48 bool "AMCC 44x" 49 select PPC_DCR_NATIVE 50 select PPC_UDBG_16550 51 select 4xx_SOC 52 select PPC_PCI_CHOICE 53 select PHYS_64BIT 54 55config E200 56 bool "Freescale e200" 57 58endchoice 59 60config POWER4_ONLY 61 bool "Optimize for POWER4" 62 depends on PPC64 63 default n 64 ---help--- 65 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. 66 The resulting binary will not work on POWER3 or RS64 processors 67 when compiled with binutils 2.15 or later. 68 69config POWER3 70 bool 71 depends on PPC64 72 default y if !POWER4_ONLY 73 74config POWER4 75 depends on PPC64 76 def_bool y 77 78config TUNE_CELL 79 bool "Optimize for Cell Broadband Engine" 80 depends on PPC64 81 help 82 Cause the compiler to optimize for the PPE of the Cell Broadband 83 Engine. This will make the code run considerably faster on Cell 84 but somewhat slower on other machines. This option only changes 85 the scheduling of instructions, not the selection of instructions 86 itself, so the resulting kernel will keep running on all other 87 machines. When building a kernel that is supposed to run only 88 on Cell, you should also select the POWER4_ONLY option. 89 90# this is temp to handle compat with arch=ppc 91config 8xx 92 bool 93 94config E500 95 select FSL_EMB_PERFMON 96 bool 97 98config PPC_E500MC 99 bool "e500mc Support" 100 select PPC_FPU 101 depends on E500 102 103config PPC_FPU 104 bool 105 default y if PPC64 106 107config 4xx 108 bool 109 depends on 40x || 44x 110 default y 111 112config BOOKE 113 bool 114 depends on E200 || E500 || 44x 115 default y 116 117config FSL_BOOKE 118 bool 119 depends on E200 || E500 120 default y 121 122config FSL_EMB_PERFMON 123 bool "Freescale Embedded Perfmon" 124 depends on E500 || PPC_83xx 125 help 126 This is the Performance Monitor support found on the e500 core 127 and some e300 cores (c3 and c4). Select this only if your 128 core supports the Embedded Performance Monitor APU 129 130config PTE_64BIT 131 bool 132 depends on 44x || E500 || PPC_86xx 133 default y if PHYS_64BIT 134 135config PHYS_64BIT 136 bool 'Large physical address support' if E500 || PPC_86xx 137 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx 138 ---help--- 139 This option enables kernel support for larger than 32-bit physical 140 addresses. This feature may not be available on all cores. 141 142 If you have more than 3.5GB of RAM or so, you also need to enable 143 SWIOTLB under Kernel Options for this to work. The actual number 144 is platform-dependent. 145 146 If in doubt, say N here. 147 148config ALTIVEC 149 bool "AltiVec Support" 150 depends on CLASSIC32 || POWER4 151 ---help--- 152 This option enables kernel support for the Altivec extensions to the 153 PowerPC processor. The kernel currently supports saving and restoring 154 altivec registers, and turning on the 'altivec enable' bit so user 155 processes can execute altivec instructions. 156 157 This option is only usefully if you have a processor that supports 158 altivec (G4, otherwise known as 74xx series), but does not have 159 any affect on a non-altivec cpu (it does, however add code to the 160 kernel). 161 162 If in doubt, say Y here. 163 164config VSX 165 bool "VSX Support" 166 depends on POWER4 && ALTIVEC && PPC_FPU 167 ---help--- 168 169 This option enables kernel support for the Vector Scaler extensions 170 to the PowerPC processor. The kernel currently supports saving and 171 restoring VSX registers, and turning on the 'VSX enable' bit so user 172 processes can execute VSX instructions. 173 174 This option is only useful if you have a processor that supports 175 VSX (P7 and above), but does not have any affect on a non-VSX 176 CPUs (it does, however add code to the kernel). 177 178 If in doubt, say Y here. 179 180config SPE 181 bool "SPE Support" 182 depends on E200 || (E500 && !PPC_E500MC) 183 default y 184 ---help--- 185 This option enables kernel support for the Signal Processing 186 Extensions (SPE) to the PowerPC processor. The kernel currently 187 supports saving and restoring SPE registers, and turning on the 188 'spe enable' bit so user processes can execute SPE instructions. 189 190 This option is only useful if you have a processor that supports 191 SPE (e500, otherwise known as 85xx series), but does not have any 192 effect on a non-spe cpu (it does, however add code to the kernel). 193 194 If in doubt, say Y here. 195 196config PPC_STD_MMU 197 bool 198 depends on 6xx || PPC64 199 default y 200 201config PPC_STD_MMU_32 202 def_bool y 203 depends on PPC_STD_MMU && PPC32 204 205config PPC_STD_MMU_64 206 def_bool y 207 depends on PPC_STD_MMU && PPC64 208 209config PPC_MMU_NOHASH 210 def_bool y 211 depends on !PPC_STD_MMU 212 213config PPC_MM_SLICES 214 bool 215 default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES) 216 default n 217 218config VIRT_CPU_ACCOUNTING 219 bool "Deterministic task and CPU time accounting" 220 depends on PPC64 221 default y 222 help 223 Select this option to enable more accurate task and CPU time 224 accounting. This is done by reading a CPU counter on each 225 kernel entry and exit and on transitions within the kernel 226 between system, softirq and hardirq state, so there is a 227 small performance impact. This also enables accounting of 228 stolen time on logically-partitioned systems running on 229 IBM POWER5-based machines. 230 231 If in doubt, say Y here. 232 233config SMP 234 depends on PPC_STD_MMU || FSL_BOOKE 235 bool "Symmetric multi-processing support" 236 ---help--- 237 This enables support for systems with more than one CPU. If you have 238 a system with only one CPU, say N. If you have a system with more 239 than one CPU, say Y. Note that the kernel does not currently 240 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 241 since they have inadequate hardware support for multiprocessor 242 operation. 243 244 If you say N here, the kernel will run on single and multiprocessor 245 machines, but will use only one CPU of a multiprocessor machine. If 246 you say Y here, the kernel will run on single-processor machines. 247 On a single-processor machine, the kernel will run faster if you say 248 N here. 249 250 If you don't know what to do here, say N. 251 252config NR_CPUS 253 int "Maximum number of CPUs (2-1024)" 254 range 2 1024 255 depends on SMP 256 default "32" if PPC64 257 default "4" 258 259config NOT_COHERENT_CACHE 260 bool 261 depends on 4xx || 8xx || E200 || PPC_MPC512x 262 default y 263 264config CHECK_CACHE_COHERENCY 265 bool 266 267endmenu 268