1# SPDX-License-Identifier: GPL-2.0 2config PPC64 3 bool "64-bit kernel" 4 select ZLIB_DEFLATE 5 help 6 This option selects whether a 32-bit or a 64-bit kernel 7 will be built. 8 9config PPC_BOOK3S_32 10 bool 11 12menu "Processor support" 13choice 14 prompt "Processor Type" 15 depends on PPC32 16 help 17 There are five families of 32 bit PowerPC chips supported. 18 The most common ones are the desktop and server CPUs (601, 603, 19 604, 740, 750, 74xx) CPUs from Freescale and IBM, with their 20 embedded 512x/52xx/82xx/83xx/86xx counterparts. 21 The other embedded parts, namely 4xx, 8xx, e200 (55xx) and e500 22 (85xx) each form a family of their own that is not compatible 23 with the others. 24 25 If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. 26 27config PPC_BOOK3S_6xx 28 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx except 601" 29 select PPC_BOOK3S_32 30 select PPC_FPU 31 select PPC_HAVE_PMU_SUPPORT 32 select PPC_HAVE_KUEP 33 select PPC_HAVE_KUAP 34 35config PPC_BOOK3S_601 36 bool "PowerPC 601" 37 select PPC_BOOK3S_32 38 select PPC_FPU 39 select PPC_HAVE_KUAP 40 41config PPC_85xx 42 bool "Freescale 85xx" 43 select E500 44 45config PPC_8xx 46 bool "Freescale 8xx" 47 select FSL_SOC 48 select SYS_SUPPORTS_HUGETLBFS 49 select PPC_HAVE_KUEP 50 select PPC_HAVE_KUAP 51 select PPC_MM_SLICES if HUGETLB_PAGE 52 53config 40x 54 bool "AMCC 40x" 55 select PPC_DCR_NATIVE 56 select PPC_UDBG_16550 57 select 4xx_SOC 58 select HAVE_PCI 59 60config 44x 61 bool "AMCC 44x, 46x or 47x" 62 select PPC_DCR_NATIVE 63 select PPC_UDBG_16550 64 select 4xx_SOC 65 select HAVE_PCI 66 select PHYS_64BIT 67 68config E200 69 bool "Freescale e200" 70 71endchoice 72 73choice 74 prompt "Processor Type" 75 depends on PPC64 76 help 77 There are two families of 64 bit PowerPC chips supported. 78 The most common ones are the desktop and server CPUs 79 (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...) 80 81 The other are the "embedded" processors compliant with the 82 "Book 3E" variant of the architecture 83 84config PPC_BOOK3S_64 85 bool "Server processors" 86 select PPC_FPU 87 select PPC_HAVE_PMU_SUPPORT 88 select SYS_SUPPORTS_HUGETLBFS 89 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 90 select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE 91 select ARCH_SUPPORTS_NUMA_BALANCING 92 select IRQ_WORK 93 select PPC_MM_SLICES 94 95config PPC_BOOK3E_64 96 bool "Embedded processors" 97 select PPC_FPU # Make it a choice ? 98 select PPC_SMP_MUXED_IPI 99 select PPC_DOORBELL 100 101endchoice 102 103choice 104 prompt "CPU selection" 105 default GENERIC_CPU 106 help 107 This will create a kernel which is optimised for a particular CPU. 108 The resulting kernel may not run on other CPUs, so use this with care. 109 110 If unsure, select Generic. 111 112config GENERIC_CPU 113 bool "Generic (POWER4 and above)" 114 depends on PPC64 && !CPU_LITTLE_ENDIAN 115 116config GENERIC_CPU 117 bool "Generic (POWER8 and above)" 118 depends on PPC64 && CPU_LITTLE_ENDIAN 119 select ARCH_HAS_FAST_MULTIPLIER 120 121config GENERIC_CPU 122 bool "Generic 32 bits powerpc" 123 depends on PPC32 && !PPC_8xx 124 125config CELL_CPU 126 bool "Cell Broadband Engine" 127 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 128 129config POWER5_CPU 130 bool "POWER5" 131 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 132 133config POWER6_CPU 134 bool "POWER6" 135 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 136 137config POWER7_CPU 138 bool "POWER7" 139 depends on PPC_BOOK3S_64 140 select ARCH_HAS_FAST_MULTIPLIER 141 142config POWER8_CPU 143 bool "POWER8" 144 depends on PPC_BOOK3S_64 145 select ARCH_HAS_FAST_MULTIPLIER 146 147config POWER9_CPU 148 bool "POWER9" 149 depends on PPC_BOOK3S_64 150 select ARCH_HAS_FAST_MULTIPLIER 151 152config E5500_CPU 153 bool "Freescale e5500" 154 depends on E500 155 156config E6500_CPU 157 bool "Freescale e6500" 158 depends on E500 159 160config 860_CPU 161 bool "8xx family" 162 depends on PPC_8xx 163 164config E300C2_CPU 165 bool "e300c2 (832x)" 166 depends on PPC_BOOK3S_32 167 168config E300C3_CPU 169 bool "e300c3 (831x)" 170 depends on PPC_BOOK3S_32 171 172config G4_CPU 173 bool "G4 (74xx)" 174 depends on PPC_BOOK3S_32 175 select ALTIVEC 176 177endchoice 178 179config TARGET_CPU_BOOL 180 bool 181 default !GENERIC_CPU 182 183config TARGET_CPU 184 string 185 depends on TARGET_CPU_BOOL 186 default "cell" if CELL_CPU 187 default "power5" if POWER5_CPU 188 default "power6" if POWER6_CPU 189 default "power7" if POWER7_CPU 190 default "power8" if POWER8_CPU 191 default "power9" if POWER9_CPU 192 default "860" if 860_CPU 193 default "e300c2" if E300C2_CPU 194 default "e300c3" if E300C3_CPU 195 default "G4" if G4_CPU 196 197config PPC_BOOK3S 198 def_bool y 199 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 200 201config PPC_BOOK3E 202 def_bool y 203 depends on PPC_BOOK3E_64 204 205config E500 206 select FSL_EMB_PERFMON 207 select PPC_FSL_BOOK3E 208 bool 209 210config PPC_E500MC 211 bool "e500mc Support" 212 select PPC_FPU 213 select COMMON_CLK 214 depends on E500 215 help 216 This must be enabled for running on e500mc (and derivatives 217 such as e5500/e6500), and must be disabled for running on 218 e500v1 or e500v2. 219 220config PPC_FPU 221 bool 222 default y if PPC64 223 224config FSL_EMB_PERFMON 225 bool "Freescale Embedded Perfmon" 226 depends on E500 || PPC_83xx 227 help 228 This is the Performance Monitor support found on the e500 core 229 and some e300 cores (c3 and c4). Select this only if your 230 core supports the Embedded Performance Monitor APU 231 232config FSL_EMB_PERF_EVENT 233 bool 234 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS 235 default y 236 237config FSL_EMB_PERF_EVENT_E500 238 bool 239 depends on FSL_EMB_PERF_EVENT && E500 240 default y 241 242config 4xx 243 bool 244 depends on 40x || 44x 245 default y 246 247config BOOKE 248 bool 249 depends on E200 || E500 || 44x || PPC_BOOK3E 250 default y 251 252config FSL_BOOKE 253 bool 254 depends on (E200 || E500) && PPC32 255 default y 256 257# this is for common code between PPC32 & PPC64 FSL BOOKE 258config PPC_FSL_BOOK3E 259 bool 260 select FSL_EMB_PERFMON 261 select PPC_SMP_MUXED_IPI 262 select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 263 select PPC_DOORBELL 264 default y if FSL_BOOKE 265 266config PTE_64BIT 267 bool 268 depends on 44x || E500 || PPC_86xx 269 default y if PHYS_64BIT 270 271config PHYS_64BIT 272 bool 'Large physical address support' if E500 || PPC_86xx 273 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx 274 select PHYS_ADDR_T_64BIT 275 ---help--- 276 This option enables kernel support for larger than 32-bit physical 277 addresses. This feature may not be available on all cores. 278 279 If you have more than 3.5GB of RAM or so, you also need to enable 280 SWIOTLB under Kernel Options for this to work. The actual number 281 is platform-dependent. 282 283 If in doubt, say N here. 284 285config ALTIVEC 286 bool "AltiVec Support" 287 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 || (PPC_E500MC && PPC64) 288 ---help--- 289 This option enables kernel support for the Altivec extensions to the 290 PowerPC processor. The kernel currently supports saving and restoring 291 altivec registers, and turning on the 'altivec enable' bit so user 292 processes can execute altivec instructions. 293 294 This option is only usefully if you have a processor that supports 295 altivec (G4, otherwise known as 74xx series), but does not have 296 any affect on a non-altivec cpu (it does, however add code to the 297 kernel). 298 299 If in doubt, say Y here. 300 301config VSX 302 bool "VSX Support" 303 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU 304 ---help--- 305 306 This option enables kernel support for the Vector Scaler extensions 307 to the PowerPC processor. The kernel currently supports saving and 308 restoring VSX registers, and turning on the 'VSX enable' bit so user 309 processes can execute VSX instructions. 310 311 This option is only useful if you have a processor that supports 312 VSX (P7 and above), but does not have any affect on a non-VSX 313 CPUs (it does, however add code to the kernel). 314 315 If in doubt, say Y here. 316 317config SPE_POSSIBLE 318 def_bool y 319 depends on E200 || (E500 && !PPC_E500MC) 320 321config SPE 322 bool "SPE Support" 323 depends on SPE_POSSIBLE 324 default y 325 ---help--- 326 This option enables kernel support for the Signal Processing 327 Extensions (SPE) to the PowerPC processor. The kernel currently 328 supports saving and restoring SPE registers, and turning on the 329 'spe enable' bit so user processes can execute SPE instructions. 330 331 This option is only useful if you have a processor that supports 332 SPE (e500, otherwise known as 85xx series), but does not have any 333 effect on a non-spe cpu (it does, however add code to the kernel). 334 335 If in doubt, say Y here. 336 337config ARCH_ENABLE_SPLIT_PMD_PTLOCK 338 def_bool y 339 depends on PPC_BOOK3S_64 340 341config PPC_RADIX_MMU 342 bool "Radix MMU Support" 343 depends on PPC_BOOK3S_64 344 select ARCH_HAS_GIGANTIC_PAGE 345 select PPC_HAVE_KUEP 346 select PPC_HAVE_KUAP 347 default y 348 help 349 Enable support for the Power ISA 3.0 Radix style MMU. Currently this 350 is only implemented by IBM Power9 CPUs, if you don't have one of them 351 you can probably disable this. 352 353config PPC_RADIX_MMU_DEFAULT 354 bool "Default to using the Radix MMU when possible" 355 depends on PPC_RADIX_MMU 356 default y 357 help 358 When the hardware supports the Radix MMU, default to using it unless 359 "disable_radix[=yes]" is specified on the kernel command line. 360 361 If this option is disabled, the Hash MMU will be used by default, 362 unless "disable_radix=no" is specified on the kernel command line. 363 364 If you're unsure, say Y. 365 366config PPC_HAVE_KUEP 367 bool 368 369config PPC_KUEP 370 bool "Kernel Userspace Execution Prevention" 371 depends on PPC_HAVE_KUEP 372 default y 373 help 374 Enable support for Kernel Userspace Execution Prevention (KUEP) 375 376 If you're unsure, say Y. 377 378config PPC_HAVE_KUAP 379 bool 380 381config PPC_KUAP 382 bool "Kernel Userspace Access Protection" 383 depends on PPC_HAVE_KUAP 384 default y 385 help 386 Enable support for Kernel Userspace Access Protection (KUAP) 387 388 If you're unsure, say Y. 389 390config PPC_KUAP_DEBUG 391 bool "Extra debugging for Kernel Userspace Access Protection" 392 depends on PPC_HAVE_KUAP && (PPC_RADIX_MMU || PPC_32) 393 help 394 Add extra debugging for Kernel Userspace Access Protection (KUAP) 395 If you're unsure, say N. 396 397config ARCH_ENABLE_HUGEPAGE_MIGRATION 398 def_bool y 399 depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION 400 401 402config PPC_MMU_NOHASH 403 def_bool y 404 depends on !PPC_BOOK3S 405 406config PPC_MMU_NOHASH_32 407 def_bool y 408 depends on PPC_MMU_NOHASH && PPC32 409 410config PPC_BOOK3E_MMU 411 def_bool y 412 depends on FSL_BOOKE || PPC_BOOK3E 413 414config PPC_MM_SLICES 415 bool 416 417config PPC_HAVE_PMU_SUPPORT 418 bool 419 420config PPC_PERF_CTRS 421 def_bool y 422 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT 423 help 424 This enables the powerpc-specific perf_event back-end. 425 426config FORCE_SMP 427 # Allow platforms to force SMP=y by selecting this 428 bool 429 select SMP 430 431config SMP 432 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x 433 select GENERIC_IRQ_MIGRATION 434 bool "Symmetric multi-processing support" if !FORCE_SMP 435 ---help--- 436 This enables support for systems with more than one CPU. If you have 437 a system with only one CPU, say N. If you have a system with more 438 than one CPU, say Y. Note that the kernel does not currently 439 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 440 since they have inadequate hardware support for multiprocessor 441 operation. 442 443 If you say N here, the kernel will run on single and multiprocessor 444 machines, but will use only one CPU of a multiprocessor machine. If 445 you say Y here, the kernel will run on single-processor machines. 446 On a single-processor machine, the kernel will run faster if you say 447 N here. 448 449 If you don't know what to do here, say N. 450 451config NR_CPUS 452 int "Maximum number of CPUs (2-8192)" 453 range 2 8192 454 depends on SMP 455 default "32" if PPC64 456 default "4" 457 458config NOT_COHERENT_CACHE 459 bool 460 depends on 4xx || PPC_8xx || E200 || PPC_MPC512x || \ 461 GAMECUBE_COMMON || AMIGAONE 462 select ARCH_HAS_DMA_COHERENT_TO_PFN 463 select ARCH_HAS_DMA_PREP_COHERENT 464 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 465 select ARCH_HAS_SYNC_DMA_FOR_CPU 466 select DMA_DIRECT_REMAP 467 default n if PPC_47x 468 default y 469 470config CHECK_CACHE_COHERENCY 471 bool 472 473config PPC_DOORBELL 474 bool 475 476endmenu 477 478config VDSO32 479 def_bool y 480 depends on PPC32 || CPU_BIG_ENDIAN 481 help 482 This symbol controls whether we build the 32-bit VDSO. We obviously 483 want to do that if we're building a 32-bit kernel. If we're building 484 a 64-bit kernel then we only want a 32-bit VDSO if we're building for 485 big endian. That is because the only little endian configuration we 486 support is ppc64le which is 64-bit only. 487 488choice 489 prompt "Endianness selection" 490 default CPU_BIG_ENDIAN 491 help 492 This option selects whether a big endian or little endian kernel will 493 be built. 494 495config CPU_BIG_ENDIAN 496 bool "Build big endian kernel" 497 help 498 Build a big endian kernel. 499 500 If unsure, select this option. 501 502config CPU_LITTLE_ENDIAN 503 bool "Build little endian kernel" 504 depends on PPC_BOOK3S_64 505 select PPC64_BOOT_WRAPPER 506 help 507 Build a little endian kernel. 508 509 Note that if cross compiling a little endian kernel, 510 CROSS_COMPILE must point to a toolchain capable of targeting 511 little endian powerpc. 512 513endchoice 514 515config PPC64_BOOT_WRAPPER 516 def_bool n 517 depends on CPU_LITTLE_ENDIAN 518