1# SPDX-License-Identifier: GPL-2.0 2config PPC64 3 bool "64-bit kernel" 4 default n 5 select ZLIB_DEFLATE 6 help 7 This option selects whether a 32-bit or a 64-bit kernel 8 will be built. 9 10menu "Processor support" 11choice 12 prompt "Processor Type" 13 depends on PPC32 14 help 15 There are five families of 32 bit PowerPC chips supported. 16 The most common ones are the desktop and server CPUs (601, 603, 17 604, 740, 750, 74xx) CPUs from Freescale and IBM, with their 18 embedded 512x/52xx/82xx/83xx/86xx counterparts. 19 The other embedded parts, namely 4xx, 8xx, e200 (55xx) and e500 20 (85xx) each form a family of their own that is not compatible 21 with the others. 22 23 If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. 24 25config PPC_BOOK3S_32 26 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" 27 select PPC_FPU 28 29config PPC_85xx 30 bool "Freescale 85xx" 31 select E500 32 33config PPC_8xx 34 bool "Freescale 8xx" 35 select FSL_SOC 36 select SYS_SUPPORTS_HUGETLBFS 37 38config 40x 39 bool "AMCC 40x" 40 select PPC_DCR_NATIVE 41 select PPC_UDBG_16550 42 select 4xx_SOC 43 select PPC_PCI_CHOICE 44 45config 44x 46 bool "AMCC 44x, 46x or 47x" 47 select PPC_DCR_NATIVE 48 select PPC_UDBG_16550 49 select 4xx_SOC 50 select PPC_PCI_CHOICE 51 select PHYS_64BIT 52 53config E200 54 bool "Freescale e200" 55 56endchoice 57 58choice 59 prompt "Processor Type" 60 depends on PPC64 61 help 62 There are two families of 64 bit PowerPC chips supported. 63 The most common ones are the desktop and server CPUs 64 (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...) 65 66 The other are the "embedded" processors compliant with the 67 "Book 3E" variant of the architecture 68 69config PPC_BOOK3S_64 70 bool "Server processors" 71 select PPC_FPU 72 select PPC_HAVE_PMU_SUPPORT 73 select SYS_SUPPORTS_HUGETLBFS 74 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 75 select ARCH_SUPPORTS_NUMA_BALANCING 76 select IRQ_WORK 77 78config PPC_BOOK3E_64 79 bool "Embedded processors" 80 select PPC_FPU # Make it a choice ? 81 select PPC_SMP_MUXED_IPI 82 select PPC_DOORBELL 83 84endchoice 85 86choice 87 prompt "CPU selection" 88 default GENERIC_CPU 89 help 90 This will create a kernel which is optimised for a particular CPU. 91 The resulting kernel may not run on other CPUs, so use this with care. 92 93 If unsure, select Generic. 94 95config GENERIC_CPU 96 bool "Generic (POWER4 and above)" 97 depends on PPC64 && !CPU_LITTLE_ENDIAN 98 99config GENERIC_CPU 100 bool "Generic (POWER8 and above)" 101 depends on PPC64 && CPU_LITTLE_ENDIAN 102 select ARCH_HAS_FAST_MULTIPLIER 103 104config GENERIC_CPU 105 bool "Generic 32 bits powerpc" 106 depends on PPC32 && !PPC_8xx 107 108config CELL_CPU 109 bool "Cell Broadband Engine" 110 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 111 112config POWER5_CPU 113 bool "POWER5" 114 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 115 116config POWER6_CPU 117 bool "POWER6" 118 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 119 120config POWER7_CPU 121 bool "POWER7" 122 depends on PPC_BOOK3S_64 123 select ARCH_HAS_FAST_MULTIPLIER 124 125config POWER8_CPU 126 bool "POWER8" 127 depends on PPC_BOOK3S_64 128 select ARCH_HAS_FAST_MULTIPLIER 129 130config POWER9_CPU 131 bool "POWER9" 132 depends on PPC_BOOK3S_64 133 select ARCH_HAS_FAST_MULTIPLIER 134 135config E5500_CPU 136 bool "Freescale e5500" 137 depends on E500 138 139config E6500_CPU 140 bool "Freescale e6500" 141 depends on E500 142 143config 860_CPU 144 bool "8xx family" 145 depends on PPC_8xx 146 147config E300C2_CPU 148 bool "e300c2 (832x)" 149 depends on PPC_BOOK3S_32 150 151config E300C3_CPU 152 bool "e300c3 (831x)" 153 depends on PPC_BOOK3S_32 154 155endchoice 156 157config TARGET_CPU_BOOL 158 bool 159 default !GENERIC_CPU 160 161config TARGET_CPU 162 string 163 depends on TARGET_CPU_BOOL 164 default "cell" if CELL_CPU 165 default "power5" if POWER5_CPU 166 default "power6" if POWER6_CPU 167 default "power7" if POWER7_CPU 168 default "power8" if POWER8_CPU 169 default "power9" if POWER9_CPU 170 default "860" if 860_CPU 171 default "e300c2" if E300C2_CPU 172 default "e300c3" if E300C3_CPU 173 174config PPC_BOOK3S 175 def_bool y 176 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 177 178config PPC_BOOK3E 179 def_bool y 180 depends on PPC_BOOK3E_64 181 182config 6xx 183 def_bool y 184 depends on PPC32 && PPC_BOOK3S 185 select PPC_HAVE_PMU_SUPPORT 186 187config E500 188 select FSL_EMB_PERFMON 189 select PPC_FSL_BOOK3E 190 bool 191 192config PPC_E500MC 193 bool "e500mc Support" 194 select PPC_FPU 195 select COMMON_CLK 196 depends on E500 197 help 198 This must be enabled for running on e500mc (and derivatives 199 such as e5500/e6500), and must be disabled for running on 200 e500v1 or e500v2. 201 202config PPC_FPU 203 bool 204 default y if PPC64 205 206config FSL_EMB_PERFMON 207 bool "Freescale Embedded Perfmon" 208 depends on E500 || PPC_83xx 209 help 210 This is the Performance Monitor support found on the e500 core 211 and some e300 cores (c3 and c4). Select this only if your 212 core supports the Embedded Performance Monitor APU 213 214config FSL_EMB_PERF_EVENT 215 bool 216 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS 217 default y 218 219config FSL_EMB_PERF_EVENT_E500 220 bool 221 depends on FSL_EMB_PERF_EVENT && E500 222 default y 223 224config 4xx 225 bool 226 depends on 40x || 44x 227 default y 228 229config BOOKE 230 bool 231 depends on E200 || E500 || 44x || PPC_BOOK3E 232 default y 233 234config FSL_BOOKE 235 bool 236 depends on (E200 || E500) && PPC32 237 default y 238 239# this is for common code between PPC32 & PPC64 FSL BOOKE 240config PPC_FSL_BOOK3E 241 bool 242 select FSL_EMB_PERFMON 243 select PPC_SMP_MUXED_IPI 244 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 245 select PPC_DOORBELL 246 default y if FSL_BOOKE 247 248config PTE_64BIT 249 bool 250 depends on 44x || E500 || PPC_86xx 251 default y if PHYS_64BIT 252 253config PHYS_64BIT 254 bool 'Large physical address support' if E500 || PPC_86xx 255 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx 256 select PHYS_ADDR_T_64BIT 257 ---help--- 258 This option enables kernel support for larger than 32-bit physical 259 addresses. This feature may not be available on all cores. 260 261 If you have more than 3.5GB of RAM or so, you also need to enable 262 SWIOTLB under Kernel Options for this to work. The actual number 263 is platform-dependent. 264 265 If in doubt, say N here. 266 267config ALTIVEC 268 bool "AltiVec Support" 269 depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64) 270 ---help--- 271 This option enables kernel support for the Altivec extensions to the 272 PowerPC processor. The kernel currently supports saving and restoring 273 altivec registers, and turning on the 'altivec enable' bit so user 274 processes can execute altivec instructions. 275 276 This option is only usefully if you have a processor that supports 277 altivec (G4, otherwise known as 74xx series), but does not have 278 any affect on a non-altivec cpu (it does, however add code to the 279 kernel). 280 281 If in doubt, say Y here. 282 283config VSX 284 bool "VSX Support" 285 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU 286 ---help--- 287 288 This option enables kernel support for the Vector Scaler extensions 289 to the PowerPC processor. The kernel currently supports saving and 290 restoring VSX registers, and turning on the 'VSX enable' bit so user 291 processes can execute VSX instructions. 292 293 This option is only useful if you have a processor that supports 294 VSX (P7 and above), but does not have any affect on a non-VSX 295 CPUs (it does, however add code to the kernel). 296 297 If in doubt, say Y here. 298 299config SPE_POSSIBLE 300 def_bool y 301 depends on E200 || (E500 && !PPC_E500MC) 302 303config SPE 304 bool "SPE Support" 305 depends on SPE_POSSIBLE 306 default y 307 ---help--- 308 This option enables kernel support for the Signal Processing 309 Extensions (SPE) to the PowerPC processor. The kernel currently 310 supports saving and restoring SPE registers, and turning on the 311 'spe enable' bit so user processes can execute SPE instructions. 312 313 This option is only useful if you have a processor that supports 314 SPE (e500, otherwise known as 85xx series), but does not have any 315 effect on a non-spe cpu (it does, however add code to the kernel). 316 317 If in doubt, say Y here. 318 319config PPC_STD_MMU 320 def_bool y 321 depends on PPC_BOOK3S 322 323config PPC_STD_MMU_32 324 def_bool y 325 depends on PPC_STD_MMU && PPC32 326 327config ARCH_ENABLE_SPLIT_PMD_PTLOCK 328 def_bool y 329 depends on PPC_BOOK3S_64 330 331config PPC_RADIX_MMU 332 bool "Radix MMU Support" 333 depends on PPC_BOOK3S_64 334 select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA 335 default y 336 help 337 Enable support for the Power ISA 3.0 Radix style MMU. Currently this 338 is only implemented by IBM Power9 CPUs, if you don't have one of them 339 you can probably disable this. 340 341config PPC_RADIX_MMU_DEFAULT 342 bool "Default to using the Radix MMU when possible" 343 depends on PPC_RADIX_MMU 344 default y 345 help 346 When the hardware supports the Radix MMU, default to using it unless 347 "disable_radix[=yes]" is specified on the kernel command line. 348 349 If this option is disabled, the Hash MMU will be used by default, 350 unless "disable_radix=no" is specified on the kernel command line. 351 352 If you're unsure, say Y. 353 354config ARCH_ENABLE_HUGEPAGE_MIGRATION 355 def_bool y 356 depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION 357 358 359config PPC_MMU_NOHASH 360 def_bool y 361 depends on !PPC_STD_MMU 362 363config PPC_BOOK3E_MMU 364 def_bool y 365 depends on FSL_BOOKE || PPC_BOOK3E 366 367config PPC_MM_SLICES 368 bool 369 default y if PPC_BOOK3S_64 370 default y if PPC_8xx && HUGETLB_PAGE 371 default n 372 373config PPC_HAVE_PMU_SUPPORT 374 bool 375 376config PPC_PERF_CTRS 377 def_bool y 378 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT 379 help 380 This enables the powerpc-specific perf_event back-end. 381 382config FORCE_SMP 383 # Allow platforms to force SMP=y by selecting this 384 bool 385 default n 386 select SMP 387 388config SMP 389 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x 390 select GENERIC_IRQ_MIGRATION 391 bool "Symmetric multi-processing support" if !FORCE_SMP 392 ---help--- 393 This enables support for systems with more than one CPU. If you have 394 a system with only one CPU, say N. If you have a system with more 395 than one CPU, say Y. Note that the kernel does not currently 396 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 397 since they have inadequate hardware support for multiprocessor 398 operation. 399 400 If you say N here, the kernel will run on single and multiprocessor 401 machines, but will use only one CPU of a multiprocessor machine. If 402 you say Y here, the kernel will run on single-processor machines. 403 On a single-processor machine, the kernel will run faster if you say 404 N here. 405 406 If you don't know what to do here, say N. 407 408config NR_CPUS 409 int "Maximum number of CPUs (2-8192)" 410 range 2 8192 411 depends on SMP 412 default "32" if PPC64 413 default "4" 414 415config NOT_COHERENT_CACHE 416 bool 417 depends on 4xx || PPC_8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON 418 default n if PPC_47x 419 default y 420 421config CHECK_CACHE_COHERENCY 422 bool 423 424config PPC_DOORBELL 425 bool 426 default n 427 428endmenu 429 430config VDSO32 431 def_bool y 432 depends on PPC32 || CPU_BIG_ENDIAN 433 help 434 This symbol controls whether we build the 32-bit VDSO. We obviously 435 want to do that if we're building a 32-bit kernel. If we're building 436 a 64-bit kernel then we only want a 32-bit VDSO if we're building for 437 big endian. That is because the only little endian configuration we 438 support is ppc64le which is 64-bit only. 439 440choice 441 prompt "Endianness selection" 442 default CPU_BIG_ENDIAN 443 help 444 This option selects whether a big endian or little endian kernel will 445 be built. 446 447config CPU_BIG_ENDIAN 448 bool "Build big endian kernel" 449 help 450 Build a big endian kernel. 451 452 If unsure, select this option. 453 454config CPU_LITTLE_ENDIAN 455 bool "Build little endian kernel" 456 depends on PPC_BOOK3S_64 457 select PPC64_BOOT_WRAPPER 458 help 459 Build a little endian kernel. 460 461 Note that if cross compiling a little endian kernel, 462 CROSS_COMPILE must point to a toolchain capable of targeting 463 little endian powerpc. 464 465endchoice 466 467config PPC64_BOOT_WRAPPER 468 def_bool n 469 depends on CPU_LITTLE_ENDIAN 470
