1# SPDX-License-Identifier: GPL-2.0 2config PPC32 3 bool 4 default y if !PPC64 5 6config PPC64 7 bool "64-bit kernel" 8 select ZLIB_DEFLATE 9 help 10 This option selects whether a 32-bit or a 64-bit kernel 11 will be built. 12 13menu "Processor support" 14choice 15 prompt "Processor Type" 16 depends on PPC32 17 help 18 There are five families of 32 bit PowerPC chips supported. 19 The most common ones are the desktop and server CPUs (603, 20 604, 740, 750, 74xx) CPUs from Freescale and IBM, with their 21 embedded 512x/52xx/82xx/83xx/86xx counterparts. 22 The other embedded parts, namely 4xx, 8xx and e500 23 (85xx) each form a family of their own that is not compatible 24 with the others. 25 26 If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. 27 28config PPC_BOOK3S_32 29 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" 30 imply PPC_FPU 31 select PPC_HAVE_PMU_SUPPORT 32 select HAVE_ARCH_VMAP_STACK 33 34config PPC_85xx 35 bool "Freescale 85xx" 36 select PPC_E500 37 38config PPC_8xx 39 bool "Freescale 8xx" 40 select ARCH_SUPPORTS_HUGETLBFS 41 select FSL_SOC 42 select PPC_KUEP 43 select HAVE_ARCH_VMAP_STACK 44 select HUGETLBFS 45 46config 40x 47 bool "AMCC 40x" 48 select PPC_DCR_NATIVE 49 select PPC_UDBG_16550 50 select 4xx_SOC 51 select HAVE_PCI 52 select PPC_KUEP if PPC_KUAP 53 54config 44x 55 bool "AMCC 44x, 46x or 47x" 56 select PPC_DCR_NATIVE 57 select PPC_UDBG_16550 58 select 4xx_SOC 59 select HAVE_PCI 60 select PHYS_64BIT 61 select PPC_KUEP 62 63endchoice 64 65config PPC_BOOK3S_603 66 bool "Support for 603 SW loaded TLB" 67 depends on PPC_BOOK3S_32 68 default y 69 help 70 Provide support for processors based on the 603 cores. Those 71 processors don't have a HASH MMU and provide SW TLB loading. 72 73config PPC_BOOK3S_604 74 bool "Support for 604+ HASH MMU" if PPC_BOOK3S_603 75 depends on PPC_BOOK3S_32 76 default y 77 help 78 Provide support for processors not based on the 603 cores. 79 Those processors have a HASH MMU. 80 81choice 82 prompt "Processor Type" 83 depends on PPC64 84 help 85 There are two families of 64 bit PowerPC chips supported. 86 The most common ones are the desktop and server CPUs 87 (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...) 88 89 The other are the "embedded" processors compliant with the 90 "Book 3E" variant of the architecture 91 92config PPC_BOOK3S_64 93 bool "Server processors" 94 select PPC_FPU 95 select PPC_HAVE_PMU_SUPPORT 96 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 97 select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION 98 select ARCH_ENABLE_SPLIT_PMD_PTLOCK 99 select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE 100 select ARCH_SUPPORTS_HUGETLBFS 101 select ARCH_SUPPORTS_NUMA_BALANCING 102 select HAVE_MOVE_PMD 103 select HAVE_MOVE_PUD 104 select IRQ_WORK 105 select PPC_64S_HASH_MMU if !PPC_RADIX_MMU 106 select KASAN_VMALLOC if KASAN 107 108config PPC_BOOK3E_64 109 bool "Embedded processors" 110 select PPC_E500 111 select PPC_E500MC 112 select PPC_FPU # Make it a choice ? 113 select PPC_SMP_MUXED_IPI 114 select PPC_DOORBELL 115 select ZONE_DMA 116 117endchoice 118 119choice 120 prompt "CPU selection" 121 default GENERIC_CPU 122 help 123 This will create a kernel which is optimised for a particular CPU. 124 The resulting kernel may not run on other CPUs, so use this with care. 125 126 If unsure, select Generic. 127 128config GENERIC_CPU 129 bool "Generic (POWER5 and PowerPC 970 and above)" 130 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 131 select PPC_64S_HASH_MMU 132 133config GENERIC_CPU 134 bool "Generic (POWER8 and above)" 135 depends on PPC_BOOK3S_64 && CPU_LITTLE_ENDIAN 136 select ARCH_HAS_FAST_MULTIPLIER 137 select PPC_64S_HASH_MMU 138 139config POWERPC_CPU 140 bool "Generic 32 bits powerpc" 141 depends on PPC_BOOK3S_32 142 143config CELL_CPU 144 bool "Cell Broadband Engine" 145 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 146 select PPC_64S_HASH_MMU 147 148config PPC_970_CPU 149 bool "PowerPC 970 (including PowerPC G5)" 150 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 151 select PPC_64S_HASH_MMU 152 153config POWER6_CPU 154 bool "POWER6" 155 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 156 select PPC_64S_HASH_MMU 157 158config POWER7_CPU 159 bool "POWER7" 160 depends on PPC_BOOK3S_64 161 select ARCH_HAS_FAST_MULTIPLIER 162 select PPC_64S_HASH_MMU 163 164config POWER8_CPU 165 bool "POWER8" 166 depends on PPC_BOOK3S_64 167 select ARCH_HAS_FAST_MULTIPLIER 168 select PPC_64S_HASH_MMU 169 170config POWER9_CPU 171 bool "POWER9" 172 depends on PPC_BOOK3S_64 173 select ARCH_HAS_FAST_MULTIPLIER 174 175config POWER10_CPU 176 bool "POWER10" 177 depends on PPC_BOOK3S_64 178 select ARCH_HAS_FAST_MULTIPLIER 179 180config E5500_CPU 181 bool "Freescale e5500" 182 depends on PPC64 && PPC_E500 183 184config E6500_CPU 185 bool "Freescale e6500" 186 depends on PPC64 && PPC_E500 187 188config 405_CPU 189 bool "40x family" 190 depends on 40x 191 192config 440_CPU 193 bool "440 (44x family)" 194 depends on 44x 195 196config 464_CPU 197 bool "464 (44x family)" 198 depends on 44x 199 200config 476_CPU 201 bool "476 (47x family)" 202 depends on PPC_47x 203 204config 860_CPU 205 bool "8xx family" 206 depends on PPC_8xx 207 208config E300C2_CPU 209 bool "e300c2 (832x)" 210 depends on PPC_BOOK3S_32 211 212config E300C3_CPU 213 bool "e300c3 (831x)" 214 depends on PPC_BOOK3S_32 215 216config G4_CPU 217 bool "G4 (74xx)" 218 depends on PPC_BOOK3S_32 219 select ALTIVEC 220 221config E500_CPU 222 bool "e500 (8540)" 223 depends on PPC_85xx && !PPC_E500MC 224 225config E500MC_CPU 226 bool "e500mc" 227 depends on PPC_85xx && PPC_E500MC 228 229config TOOLCHAIN_DEFAULT_CPU 230 bool "Rely on the toolchain's implicit default CPU" 231 depends on PPC32 232 233endchoice 234 235config TARGET_CPU_BOOL 236 bool 237 default !GENERIC_CPU && !TOOLCHAIN_DEFAULT_CPU 238 239config TARGET_CPU 240 string 241 depends on TARGET_CPU_BOOL 242 default "cell" if CELL_CPU 243 default "970" if PPC_970_CPU 244 default "power6" if POWER6_CPU 245 default "power7" if POWER7_CPU 246 default "power8" if POWER8_CPU 247 default "power9" if POWER9_CPU 248 default "power10" if POWER10_CPU 249 default "405" if 405_CPU 250 default "440" if 440_CPU 251 default "464" if 464_CPU 252 default "476" if 476_CPU 253 default "860" if 860_CPU 254 default "e300c2" if E300C2_CPU 255 default "e300c3" if E300C3_CPU 256 default "G4" if G4_CPU 257 default "8540" if E500_CPU 258 default "e500mc" if E500MC_CPU 259 default "powerpc" if POWERPC_CPU 260 261config PPC_BOOK3S 262 def_bool y 263 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 264 265config PPC_E500 266 select FSL_EMB_PERFMON 267 bool 268 select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 269 select PPC_SMP_MUXED_IPI 270 select PPC_DOORBELL 271 select PPC_KUEP 272 273config PPC_E500MC 274 bool "e500mc Support" 275 select PPC_FPU 276 select COMMON_CLK 277 depends on PPC_E500 278 help 279 This must be enabled for running on e500mc (and derivatives 280 such as e5500/e6500), and must be disabled for running on 281 e500v1 or e500v2. 282 283config PPC_FPU_REGS 284 bool 285 286config PPC_FPU 287 bool "Support for Floating Point Unit (FPU)" if PPC_MPC832x 288 default y if PPC64 289 select PPC_FPU_REGS 290 help 291 This must be enabled to support the Floating Point Unit 292 Most 6xx have an FPU but e300c2 core (mpc832x) don't have 293 an FPU, so when building an embedded kernel for that target 294 you can disable FPU support. 295 296 If unsure say Y. 297 298config FSL_EMB_PERFMON 299 bool "Freescale Embedded Perfmon" 300 depends on PPC_E500 || PPC_83xx 301 help 302 This is the Performance Monitor support found on the e500 core 303 and some e300 cores (c3 and c4). Select this only if your 304 core supports the Embedded Performance Monitor APU 305 306config FSL_EMB_PERF_EVENT 307 bool 308 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS 309 default y 310 311config FSL_EMB_PERF_EVENT_E500 312 bool 313 depends on FSL_EMB_PERF_EVENT && PPC_E500 314 default y 315 316config 4xx 317 bool 318 depends on 40x || 44x 319 default y 320 321config BOOKE 322 bool 323 depends on PPC_E500 || 44x 324 default y 325 326config BOOKE_OR_40x 327 bool 328 depends on BOOKE || 40x 329 default y 330 331config PTE_64BIT 332 bool 333 depends on 44x || PPC_E500 || PPC_86xx 334 default y if PHYS_64BIT 335 336config PHYS_64BIT 337 bool 'Large physical address support' if PPC_E500 || PPC_86xx 338 depends on (44x || PPC_E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx 339 select PHYS_ADDR_T_64BIT 340 help 341 This option enables kernel support for larger than 32-bit physical 342 addresses. This feature may not be available on all cores. 343 344 If you have more than 3.5GB of RAM or so, you also need to enable 345 SWIOTLB under Kernel Options for this to work. The actual number 346 is platform-dependent. 347 348 If in doubt, say N here. 349 350config ALTIVEC 351 bool "AltiVec Support" 352 depends on PPC_BOOK3S || (PPC_E500MC && PPC64 && !E5500_CPU) 353 select PPC_FPU 354 help 355 This option enables kernel support for the Altivec extensions to the 356 PowerPC processor. The kernel currently supports saving and restoring 357 altivec registers, and turning on the 'altivec enable' bit so user 358 processes can execute altivec instructions. 359 360 This option is only usefully if you have a processor that supports 361 altivec (G4, otherwise known as 74xx series), but does not have 362 any affect on a non-altivec cpu (it does, however add code to the 363 kernel). 364 365 If in doubt, say Y here. 366 367config VSX 368 bool "VSX Support" 369 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU 370 help 371 372 This option enables kernel support for the Vector Scaler extensions 373 to the PowerPC processor. The kernel currently supports saving and 374 restoring VSX registers, and turning on the 'VSX enable' bit so user 375 processes can execute VSX instructions. 376 377 This option is only useful if you have a processor that supports 378 VSX (P7 and above), but does not have any affect on a non-VSX 379 CPUs (it does, however add code to the kernel). 380 381 If in doubt, say Y here. 382 383config SPE_POSSIBLE 384 def_bool y 385 depends on PPC_E500 && !PPC_E500MC 386 387config SPE 388 bool "SPE Support" 389 depends on SPE_POSSIBLE 390 default y 391 help 392 This option enables kernel support for the Signal Processing 393 Extensions (SPE) to the PowerPC processor. The kernel currently 394 supports saving and restoring SPE registers, and turning on the 395 'spe enable' bit so user processes can execute SPE instructions. 396 397 This option is only useful if you have a processor that supports 398 SPE (e500, otherwise known as 85xx series), but does not have any 399 effect on a non-spe cpu (it does, however add code to the kernel). 400 401 If in doubt, say Y here. 402 403config PPC_64S_HASH_MMU 404 bool "Hash MMU Support" 405 depends on PPC_BOOK3S_64 406 default y 407 help 408 Enable support for the Power ISA Hash style MMU. This is implemented 409 by all IBM Power and other 64-bit Book3S CPUs before ISA v3.0. The 410 OpenPOWER ISA does not mandate the hash MMU and some CPUs do not 411 implement it (e.g., Microwatt). 412 413 Note that POWER9 PowerVM platforms only support the hash 414 MMU. From POWER10 radix is also supported by PowerVM. 415 416 If you're unsure, say Y. 417 418config PPC_RADIX_MMU 419 bool "Radix MMU Support" 420 depends on PPC_BOOK3S_64 421 select ARCH_HAS_GIGANTIC_PAGE 422 default y 423 help 424 Enable support for the Power ISA 3.0 Radix style MMU. Currently this 425 is only implemented by IBM Power9 CPUs, if you don't have one of them 426 you can probably disable this. 427 428config PPC_RADIX_MMU_DEFAULT 429 bool "Default to using the Radix MMU when possible" if PPC_64S_HASH_MMU 430 depends on PPC_BOOK3S_64 431 depends on PPC_RADIX_MMU 432 default y 433 help 434 When the hardware supports the Radix MMU, default to using it unless 435 "disable_radix[=yes]" is specified on the kernel command line. 436 437 If this option is disabled, the Hash MMU will be used by default, 438 unless "disable_radix=no" is specified on the kernel command line. 439 440 If you're unsure, say Y. 441 442config PPC_KUEP 443 bool "Kernel Userspace Execution Prevention" if !40x 444 default y if !40x 445 help 446 Enable support for Kernel Userspace Execution Prevention (KUEP) 447 448 If you're unsure, say Y. 449 450config PPC_KUAP 451 bool "Kernel Userspace Access Protection" 452 default y 453 help 454 Enable support for Kernel Userspace Access Protection (KUAP) 455 456 If you're unsure, say Y. 457 458config PPC_KUAP_DEBUG 459 bool "Extra debugging for Kernel Userspace Access Protection" 460 depends on PPC_KUAP 461 help 462 Add extra debugging for Kernel Userspace Access Protection (KUAP) 463 If you're unsure, say N. 464 465config PPC_PKEY 466 def_bool y 467 depends on PPC_BOOK3S_64 468 depends on PPC_MEM_KEYS || PPC_KUAP || PPC_KUEP 469 470 471config PPC_MMU_NOHASH 472 def_bool y 473 depends on !PPC_BOOK3S 474 475config PPC_HAVE_PMU_SUPPORT 476 bool 477 478config PMU_SYSFS 479 bool "Create PMU SPRs sysfs file" 480 default n 481 help 482 This option enables sysfs file creation for PMU SPRs like MMCR* and PMC*. 483 484config PPC_PERF_CTRS 485 def_bool y 486 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT 487 help 488 This enables the powerpc-specific perf_event back-end. 489 490config FORCE_SMP 491 # Allow platforms to force SMP=y by selecting this 492 bool 493 select SMP 494 495config SMP 496 depends on PPC_BOOK3S || PPC_E500 || PPC_47x 497 select GENERIC_IRQ_MIGRATION 498 bool "Symmetric multi-processing support" if !FORCE_SMP 499 help 500 This enables support for systems with more than one CPU. If you have 501 a system with only one CPU, say N. If you have a system with more 502 than one CPU, say Y. Note that the kernel does not currently 503 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 504 since they have inadequate hardware support for multiprocessor 505 operation. 506 507 If you say N here, the kernel will run on single and multiprocessor 508 machines, but will use only one CPU of a multiprocessor machine. If 509 you say Y here, the kernel will run on single-processor machines. 510 On a single-processor machine, the kernel will run faster if you say 511 N here. 512 513 If you don't know what to do here, say N. 514 515config NR_CPUS 516 int "Maximum number of CPUs (2-8192)" if SMP 517 range 2 8192 if SMP 518 default "1" if !SMP 519 default "32" if PPC64 520 default "4" 521 522config NOT_COHERENT_CACHE 523 bool 524 depends on 4xx || PPC_8xx || PPC_MPC512x || \ 525 GAMECUBE_COMMON || AMIGAONE 526 select ARCH_HAS_DMA_PREP_COHERENT 527 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 528 select ARCH_HAS_SYNC_DMA_FOR_CPU 529 select DMA_DIRECT_REMAP 530 default n if PPC_47x 531 default y 532 533config CHECK_CACHE_COHERENCY 534 bool 535 536config PPC_DOORBELL 537 bool 538 539endmenu 540 541config VDSO32 542 def_bool y 543 depends on PPC32 || COMPAT 544 help 545 This symbol controls whether we build the 32-bit VDSO. We obviously 546 want to do that if we're building a 32-bit kernel. If we're building 547 a 64-bit kernel then we only want a 32-bit VDSO if we're also enabling 548 COMPAT. 549 550choice 551 prompt "Endianness selection" 552 default CPU_BIG_ENDIAN 553 help 554 This option selects whether a big endian or little endian kernel will 555 be built. 556 557config CPU_BIG_ENDIAN 558 bool "Build big endian kernel" 559 help 560 Build a big endian kernel. 561 562 If unsure, select this option. 563 564config CPU_LITTLE_ENDIAN 565 bool "Build little endian kernel" 566 depends on PPC_BOOK3S_64 567 select PPC64_BOOT_WRAPPER 568 help 569 Build a little endian kernel. 570 571 Note that if cross compiling a little endian kernel, 572 CROSS_COMPILE must point to a toolchain capable of targeting 573 little endian powerpc. 574 575endchoice 576 577config PPC64_ELF_ABI_V1 578 def_bool PPC64 && CPU_BIG_ENDIAN 579 580config PPC64_ELF_ABI_V2 581 def_bool PPC64 && CPU_LITTLE_ENDIAN 582 583config PPC64_BOOT_WRAPPER 584 def_bool n 585 depends on CPU_LITTLE_ENDIAN 586