1# SPDX-License-Identifier: GPL-2.0 2config PPC32 3 bool 4 default y if !PPC64 5 select KASAN_VMALLOC if KASAN && MODULES 6 7config PPC64 8 bool "64-bit kernel" 9 select ZLIB_DEFLATE 10 help 11 This option selects whether a 32-bit or a 64-bit kernel 12 will be built. 13 14menu "Processor support" 15choice 16 prompt "Processor Type" 17 depends on PPC32 18 help 19 There are five families of 32 bit PowerPC chips supported. 20 The most common ones are the desktop and server CPUs (603, 21 604, 740, 750, 74xx) CPUs from Freescale and IBM, with their 22 embedded 512x/52xx/82xx/83xx/86xx counterparts. 23 The other embedded parts, namely 4xx, 8xx and e500 24 (85xx) each form a family of their own that is not compatible 25 with the others. 26 27 If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. 28 29config PPC_BOOK3S_32 30 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" 31 imply PPC_FPU 32 select PPC_HAVE_PMU_SUPPORT 33 select HAVE_ARCH_VMAP_STACK 34 35config PPC_85xx 36 bool "Freescale 85xx" 37 select E500 38 39config PPC_8xx 40 bool "Freescale 8xx" 41 select ARCH_SUPPORTS_HUGETLBFS 42 select FSL_SOC 43 select PPC_KUEP 44 select HAVE_ARCH_VMAP_STACK 45 select HUGETLBFS 46 47config 40x 48 bool "AMCC 40x" 49 select PPC_DCR_NATIVE 50 select PPC_UDBG_16550 51 select 4xx_SOC 52 select HAVE_PCI 53 select PPC_KUEP if PPC_KUAP 54 55config 44x 56 bool "AMCC 44x, 46x or 47x" 57 select PPC_DCR_NATIVE 58 select PPC_UDBG_16550 59 select 4xx_SOC 60 select HAVE_PCI 61 select PHYS_64BIT 62 select PPC_KUEP 63 64endchoice 65 66config PPC_BOOK3S_603 67 bool "Support for 603 SW loaded TLB" 68 depends on PPC_BOOK3S_32 69 default y 70 help 71 Provide support for processors based on the 603 cores. Those 72 processors don't have a HASH MMU and provide SW TLB loading. 73 74config PPC_BOOK3S_604 75 bool "Support for 604+ HASH MMU" if PPC_BOOK3S_603 76 depends on PPC_BOOK3S_32 77 default y 78 help 79 Provide support for processors not based on the 603 cores. 80 Those processors have a HASH MMU. 81 82choice 83 prompt "Processor Type" 84 depends on PPC64 85 help 86 There are two families of 64 bit PowerPC chips supported. 87 The most common ones are the desktop and server CPUs 88 (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...) 89 90 The other are the "embedded" processors compliant with the 91 "Book 3E" variant of the architecture 92 93config PPC_BOOK3S_64 94 bool "Server processors" 95 select PPC_FPU 96 select PPC_HAVE_PMU_SUPPORT 97 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 98 select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION 99 select ARCH_ENABLE_SPLIT_PMD_PTLOCK 100 select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE 101 select ARCH_SUPPORTS_HUGETLBFS 102 select ARCH_SUPPORTS_NUMA_BALANCING 103 select HAVE_MOVE_PMD 104 select HAVE_MOVE_PUD 105 select IRQ_WORK 106 select PPC_64S_HASH_MMU if !PPC_RADIX_MMU 107 select KASAN_VMALLOC if KASAN 108 109config PPC_BOOK3E_64 110 bool "Embedded processors" 111 select PPC_FSL_BOOK3E 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 (POWER4 and above)" 130 depends on PPC64 && !CPU_LITTLE_ENDIAN 131 select PPC_64S_HASH_MMU if PPC_BOOK3S_64 132 133config GENERIC_CPU 134 bool "Generic (POWER8 and above)" 135 depends on PPC64 && 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 PPC32 && !PPC_8xx && !PPC_85xx 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 POWER5_CPU 149 bool "POWER5" 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 E5500_CPU 176 bool "Freescale e5500" 177 depends on PPC64 && E500 178 179config E6500_CPU 180 bool "Freescale e6500" 181 depends on PPC64 && E500 182 183config 860_CPU 184 bool "8xx family" 185 depends on PPC_8xx 186 187config E300C2_CPU 188 bool "e300c2 (832x)" 189 depends on PPC_BOOK3S_32 190 191config E300C3_CPU 192 bool "e300c3 (831x)" 193 depends on PPC_BOOK3S_32 194 195config G4_CPU 196 bool "G4 (74xx)" 197 depends on PPC_BOOK3S_32 198 select ALTIVEC 199 200config E500_CPU 201 bool "e500 (8540)" 202 depends on PPC_85xx && !PPC_E500MC 203 204config E500MC_CPU 205 bool "e500mc" 206 depends on PPC_85xx && PPC_E500MC 207 208config TOOLCHAIN_DEFAULT_CPU 209 bool "Rely on the toolchain's implicit default CPU" 210 depends on PPC32 211 212endchoice 213 214config TARGET_CPU_BOOL 215 bool 216 default !GENERIC_CPU && !TOOLCHAIN_DEFAULT_CPU 217 218config TARGET_CPU 219 string 220 depends on TARGET_CPU_BOOL 221 default "cell" if CELL_CPU 222 default "power5" if POWER5_CPU 223 default "power6" if POWER6_CPU 224 default "power7" if POWER7_CPU 225 default "power8" if POWER8_CPU 226 default "power9" if POWER9_CPU 227 default "860" if 860_CPU 228 default "e300c2" if E300C2_CPU 229 default "e300c3" if E300C3_CPU 230 default "G4" if G4_CPU 231 default "8540" if E500_CPU 232 default "e500mc" if E500MC_CPU 233 default "powerpc" if POWERPC_CPU 234 235config PPC_BOOK3S 236 def_bool y 237 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 238 239config PPC_BOOK3E 240 def_bool y 241 depends on PPC_BOOK3E_64 242 243config E500 244 select FSL_EMB_PERFMON 245 select PPC_FSL_BOOK3E 246 bool 247 248config PPC_E500MC 249 bool "e500mc Support" 250 select PPC_FPU 251 select COMMON_CLK 252 depends on E500 253 help 254 This must be enabled for running on e500mc (and derivatives 255 such as e5500/e6500), and must be disabled for running on 256 e500v1 or e500v2. 257 258config PPC_FPU_REGS 259 bool 260 261config PPC_FPU 262 bool "Support for Floating Point Unit (FPU)" if PPC_MPC832x 263 default y if PPC64 264 select PPC_FPU_REGS 265 help 266 This must be enabled to support the Floating Point Unit 267 Most 6xx have an FPU but e300c2 core (mpc832x) don't have 268 an FPU, so when building an embedded kernel for that target 269 you can disable FPU support. 270 271 If unsure say Y. 272 273config FSL_EMB_PERFMON 274 bool "Freescale Embedded Perfmon" 275 depends on E500 || PPC_83xx 276 help 277 This is the Performance Monitor support found on the e500 core 278 and some e300 cores (c3 and c4). Select this only if your 279 core supports the Embedded Performance Monitor APU 280 281config FSL_EMB_PERF_EVENT 282 bool 283 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS 284 default y 285 286config FSL_EMB_PERF_EVENT_E500 287 bool 288 depends on FSL_EMB_PERF_EVENT && E500 289 default y 290 291config 4xx 292 bool 293 depends on 40x || 44x 294 default y 295 296config BOOKE 297 bool 298 depends on E500 || 44x || PPC_BOOK3E 299 default y 300 301config BOOKE_OR_40x 302 bool 303 depends on BOOKE || 40x 304 default y 305 306config FSL_BOOKE 307 bool 308 depends on E500 && PPC32 309 default y 310 311# this is for common code between PPC32 & PPC64 FSL BOOKE 312config PPC_FSL_BOOK3E 313 bool 314 select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 315 imply FSL_EMB_PERFMON 316 select PPC_SMP_MUXED_IPI 317 select PPC_DOORBELL 318 select PPC_KUEP 319 default y if FSL_BOOKE 320 321config PTE_64BIT 322 bool 323 depends on 44x || E500 || PPC_86xx 324 default y if PHYS_64BIT 325 326config PHYS_64BIT 327 bool 'Large physical address support' if E500 || PPC_86xx 328 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx 329 select PHYS_ADDR_T_64BIT 330 help 331 This option enables kernel support for larger than 32-bit physical 332 addresses. This feature may not be available on all cores. 333 334 If you have more than 3.5GB of RAM or so, you also need to enable 335 SWIOTLB under Kernel Options for this to work. The actual number 336 is platform-dependent. 337 338 If in doubt, say N here. 339 340config ALTIVEC 341 bool "AltiVec Support" 342 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 || (PPC_E500MC && PPC64) 343 select PPC_FPU 344 help 345 This option enables kernel support for the Altivec extensions to the 346 PowerPC processor. The kernel currently supports saving and restoring 347 altivec registers, and turning on the 'altivec enable' bit so user 348 processes can execute altivec instructions. 349 350 This option is only usefully if you have a processor that supports 351 altivec (G4, otherwise known as 74xx series), but does not have 352 any affect on a non-altivec cpu (it does, however add code to the 353 kernel). 354 355 If in doubt, say Y here. 356 357config VSX 358 bool "VSX Support" 359 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU 360 help 361 362 This option enables kernel support for the Vector Scaler extensions 363 to the PowerPC processor. The kernel currently supports saving and 364 restoring VSX registers, and turning on the 'VSX enable' bit so user 365 processes can execute VSX instructions. 366 367 This option is only useful if you have a processor that supports 368 VSX (P7 and above), but does not have any affect on a non-VSX 369 CPUs (it does, however add code to the kernel). 370 371 If in doubt, say Y here. 372 373config SPE_POSSIBLE 374 def_bool y 375 depends on E500 && !PPC_E500MC 376 377config SPE 378 bool "SPE Support" 379 depends on SPE_POSSIBLE 380 default y 381 help 382 This option enables kernel support for the Signal Processing 383 Extensions (SPE) to the PowerPC processor. The kernel currently 384 supports saving and restoring SPE registers, and turning on the 385 'spe enable' bit so user processes can execute SPE instructions. 386 387 This option is only useful if you have a processor that supports 388 SPE (e500, otherwise known as 85xx series), but does not have any 389 effect on a non-spe cpu (it does, however add code to the kernel). 390 391 If in doubt, say Y here. 392 393config PPC_64S_HASH_MMU 394 bool "Hash MMU Support" 395 depends on PPC_BOOK3S_64 396 default y 397 help 398 Enable support for the Power ISA Hash style MMU. This is implemented 399 by all IBM Power and other 64-bit Book3S CPUs before ISA v3.0. The 400 OpenPOWER ISA does not mandate the hash MMU and some CPUs do not 401 implement it (e.g., Microwatt). 402 403 Note that POWER9 PowerVM platforms only support the hash 404 MMU. From POWER10 radix is also supported by PowerVM. 405 406 If you're unsure, say Y. 407 408config PPC_RADIX_MMU 409 bool "Radix MMU Support" 410 depends on PPC_BOOK3S_64 411 select ARCH_HAS_GIGANTIC_PAGE 412 default y 413 help 414 Enable support for the Power ISA 3.0 Radix style MMU. Currently this 415 is only implemented by IBM Power9 CPUs, if you don't have one of them 416 you can probably disable this. 417 418config PPC_RADIX_MMU_DEFAULT 419 bool "Default to using the Radix MMU when possible" if PPC_64S_HASH_MMU 420 depends on PPC_BOOK3S_64 421 depends on PPC_RADIX_MMU 422 default y 423 help 424 When the hardware supports the Radix MMU, default to using it unless 425 "disable_radix[=yes]" is specified on the kernel command line. 426 427 If this option is disabled, the Hash MMU will be used by default, 428 unless "disable_radix=no" is specified on the kernel command line. 429 430 If you're unsure, say Y. 431 432config PPC_KUEP 433 bool "Kernel Userspace Execution Prevention" if !40x 434 default y if !40x 435 help 436 Enable support for Kernel Userspace Execution Prevention (KUEP) 437 438 If you're unsure, say Y. 439 440config PPC_KUAP 441 bool "Kernel Userspace Access Protection" 442 default y 443 help 444 Enable support for Kernel Userspace Access Protection (KUAP) 445 446 If you're unsure, say Y. 447 448config PPC_KUAP_DEBUG 449 bool "Extra debugging for Kernel Userspace Access Protection" 450 depends on PPC_KUAP 451 help 452 Add extra debugging for Kernel Userspace Access Protection (KUAP) 453 If you're unsure, say N. 454 455config PPC_PKEY 456 def_bool y 457 depends on PPC_BOOK3S_64 458 depends on PPC_MEM_KEYS || PPC_KUAP || PPC_KUEP 459 460 461config PPC_MMU_NOHASH 462 def_bool y 463 depends on !PPC_BOOK3S 464 465config PPC_BOOK3E_MMU 466 def_bool y 467 depends on FSL_BOOKE || PPC_BOOK3E 468 469config PPC_HAVE_PMU_SUPPORT 470 bool 471 472config PMU_SYSFS 473 bool "Create PMU SPRs sysfs file" 474 default n 475 help 476 This option enables sysfs file creation for PMU SPRs like MMCR* and PMC*. 477 478config PPC_PERF_CTRS 479 def_bool y 480 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT 481 help 482 This enables the powerpc-specific perf_event back-end. 483 484config FORCE_SMP 485 # Allow platforms to force SMP=y by selecting this 486 bool 487 select SMP 488 489config SMP 490 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x 491 select GENERIC_IRQ_MIGRATION 492 bool "Symmetric multi-processing support" if !FORCE_SMP 493 help 494 This enables support for systems with more than one CPU. If you have 495 a system with only one CPU, say N. If you have a system with more 496 than one CPU, say Y. Note that the kernel does not currently 497 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 498 since they have inadequate hardware support for multiprocessor 499 operation. 500 501 If you say N here, the kernel will run on single and multiprocessor 502 machines, but will use only one CPU of a multiprocessor machine. If 503 you say Y here, the kernel will run on single-processor machines. 504 On a single-processor machine, the kernel will run faster if you say 505 N here. 506 507 If you don't know what to do here, say N. 508 509config NR_CPUS 510 int "Maximum number of CPUs (2-8192)" if SMP 511 range 2 8192 if SMP 512 default "1" if !SMP 513 default "32" if PPC64 514 default "4" 515 516config NOT_COHERENT_CACHE 517 bool 518 depends on 4xx || PPC_8xx || PPC_MPC512x || \ 519 GAMECUBE_COMMON || AMIGAONE 520 select ARCH_HAS_DMA_PREP_COHERENT 521 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 522 select ARCH_HAS_SYNC_DMA_FOR_CPU 523 select DMA_DIRECT_REMAP 524 default n if PPC_47x 525 default y 526 527config CHECK_CACHE_COHERENCY 528 bool 529 530config PPC_DOORBELL 531 bool 532 533endmenu 534 535config VDSO32 536 def_bool y 537 depends on PPC32 || COMPAT 538 help 539 This symbol controls whether we build the 32-bit VDSO. We obviously 540 want to do that if we're building a 32-bit kernel. If we're building 541 a 64-bit kernel then we only want a 32-bit VDSO if we're also enabling 542 COMPAT. 543 544choice 545 prompt "Endianness selection" 546 default CPU_BIG_ENDIAN 547 help 548 This option selects whether a big endian or little endian kernel will 549 be built. 550 551config CPU_BIG_ENDIAN 552 bool "Build big endian kernel" 553 help 554 Build a big endian kernel. 555 556 If unsure, select this option. 557 558config CPU_LITTLE_ENDIAN 559 bool "Build little endian kernel" 560 depends on PPC_BOOK3S_64 561 select PPC64_BOOT_WRAPPER 562 help 563 Build a little endian kernel. 564 565 Note that if cross compiling a little endian kernel, 566 CROSS_COMPILE must point to a toolchain capable of targeting 567 little endian powerpc. 568 569endchoice 570 571config PPC64_ELF_ABI_V1 572 def_bool PPC64 && CPU_BIG_ENDIAN 573 574config PPC64_ELF_ABI_V2 575 def_bool PPC64 && CPU_LITTLE_ENDIAN 576 577config PPC64_BOOT_WRAPPER 578 def_bool n 579 depends on CPU_LITTLE_ENDIAN 580