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 PPC_HAVE_KUEP 34 select PPC_HAVE_KUAP 35 select HAVE_ARCH_VMAP_STACK 36 37config PPC_85xx 38 bool "Freescale 85xx" 39 select E500 40 41config PPC_8xx 42 bool "Freescale 8xx" 43 select ARCH_SUPPORTS_HUGETLBFS 44 select FSL_SOC 45 select PPC_HAVE_KUEP 46 select PPC_HAVE_KUAP 47 select HAVE_ARCH_VMAP_STACK 48 select HUGETLBFS 49 50config 40x 51 bool "AMCC 40x" 52 select PPC_DCR_NATIVE 53 select PPC_UDBG_16550 54 select 4xx_SOC 55 select HAVE_PCI 56 57config 44x 58 bool "AMCC 44x, 46x or 47x" 59 select PPC_DCR_NATIVE 60 select PPC_UDBG_16550 61 select 4xx_SOC 62 select HAVE_PCI 63 select PHYS_64BIT 64 select PPC_HAVE_KUEP 65 66endchoice 67 68config PPC_BOOK3S_603 69 bool "Support for 603 SW loaded TLB" 70 depends on PPC_BOOK3S_32 71 default y 72 help 73 Provide support for processors based on the 603 cores. Those 74 processors don't have a HASH MMU and provide SW TLB loading. 75 76config PPC_BOOK3S_604 77 bool "Support for 604+ HASH MMU" if PPC_BOOK3S_603 78 depends on PPC_BOOK3S_32 79 default y 80 help 81 Provide support for processors not based on the 603 cores. 82 Those processors have a HASH MMU. 83 84choice 85 prompt "Processor Type" 86 depends on PPC64 87 help 88 There are two families of 64 bit PowerPC chips supported. 89 The most common ones are the desktop and server CPUs 90 (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...) 91 92 The other are the "embedded" processors compliant with the 93 "Book 3E" variant of the architecture 94 95config PPC_BOOK3S_64 96 bool "Server processors" 97 select PPC_FPU 98 select PPC_HAVE_PMU_SUPPORT 99 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 100 select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION 101 select ARCH_ENABLE_PMD_SPLIT_PTLOCK 102 select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE 103 select ARCH_SUPPORTS_HUGETLBFS 104 select ARCH_SUPPORTS_NUMA_BALANCING 105 select HAVE_MOVE_PMD 106 select HAVE_MOVE_PUD 107 select IRQ_WORK 108 select PPC_MM_SLICES 109 select PPC_HAVE_KUEP 110 select PPC_HAVE_KUAP 111 112config PPC_BOOK3E_64 113 bool "Embedded processors" 114 select PPC_FPU # Make it a choice ? 115 select PPC_SMP_MUXED_IPI 116 select PPC_DOORBELL 117 select ZONE_DMA 118 119endchoice 120 121choice 122 prompt "CPU selection" 123 default GENERIC_CPU 124 help 125 This will create a kernel which is optimised for a particular CPU. 126 The resulting kernel may not run on other CPUs, so use this with care. 127 128 If unsure, select Generic. 129 130config GENERIC_CPU 131 bool "Generic (POWER4 and above)" 132 depends on PPC64 && !CPU_LITTLE_ENDIAN 133 134config GENERIC_CPU 135 bool "Generic (POWER8 and above)" 136 depends on PPC64 && CPU_LITTLE_ENDIAN 137 select ARCH_HAS_FAST_MULTIPLIER 138 139config GENERIC_CPU 140 bool "Generic 32 bits powerpc" 141 depends on PPC32 && !PPC_8xx 142 143config CELL_CPU 144 bool "Cell Broadband Engine" 145 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 146 147config POWER5_CPU 148 bool "POWER5" 149 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 150 151config POWER6_CPU 152 bool "POWER6" 153 depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN 154 155config POWER7_CPU 156 bool "POWER7" 157 depends on PPC_BOOK3S_64 158 select ARCH_HAS_FAST_MULTIPLIER 159 160config POWER8_CPU 161 bool "POWER8" 162 depends on PPC_BOOK3S_64 163 select ARCH_HAS_FAST_MULTIPLIER 164 165config POWER9_CPU 166 bool "POWER9" 167 depends on PPC_BOOK3S_64 168 select ARCH_HAS_FAST_MULTIPLIER 169 170config E5500_CPU 171 bool "Freescale e5500" 172 depends on E500 173 174config E6500_CPU 175 bool "Freescale e6500" 176 depends on E500 177 178config 860_CPU 179 bool "8xx family" 180 depends on PPC_8xx 181 182config E300C2_CPU 183 bool "e300c2 (832x)" 184 depends on PPC_BOOK3S_32 185 186config E300C3_CPU 187 bool "e300c3 (831x)" 188 depends on PPC_BOOK3S_32 189 190config G4_CPU 191 bool "G4 (74xx)" 192 depends on PPC_BOOK3S_32 193 select ALTIVEC 194 195endchoice 196 197config TARGET_CPU_BOOL 198 bool 199 default !GENERIC_CPU 200 201config TARGET_CPU 202 string 203 depends on TARGET_CPU_BOOL 204 default "cell" if CELL_CPU 205 default "power5" if POWER5_CPU 206 default "power6" if POWER6_CPU 207 default "power7" if POWER7_CPU 208 default "power8" if POWER8_CPU 209 default "power9" if POWER9_CPU 210 default "860" if 860_CPU 211 default "e300c2" if E300C2_CPU 212 default "e300c3" if E300C3_CPU 213 default "G4" if G4_CPU 214 215config PPC_BOOK3S 216 def_bool y 217 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 218 219config PPC_BOOK3E 220 def_bool y 221 depends on PPC_BOOK3E_64 222 223config E500 224 select FSL_EMB_PERFMON 225 select PPC_FSL_BOOK3E 226 bool 227 228config PPC_E500MC 229 bool "e500mc Support" 230 select PPC_FPU 231 select COMMON_CLK 232 depends on E500 233 help 234 This must be enabled for running on e500mc (and derivatives 235 such as e5500/e6500), and must be disabled for running on 236 e500v1 or e500v2. 237 238config PPC_FPU_REGS 239 bool 240 241config PPC_FPU 242 bool "Support for Floating Point Unit (FPU)" if PPC_MPC832x 243 default y if PPC64 244 select PPC_FPU_REGS 245 help 246 This must be enabled to support the Floating Point Unit 247 Most 6xx have an FPU but e300c2 core (mpc832x) don't have 248 an FPU, so when building an embedded kernel for that target 249 you can disable FPU support. 250 251 If unsure say Y. 252 253config FSL_EMB_PERFMON 254 bool "Freescale Embedded Perfmon" 255 depends on E500 || PPC_83xx 256 help 257 This is the Performance Monitor support found on the e500 core 258 and some e300 cores (c3 and c4). Select this only if your 259 core supports the Embedded Performance Monitor APU 260 261config FSL_EMB_PERF_EVENT 262 bool 263 depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS 264 default y 265 266config FSL_EMB_PERF_EVENT_E500 267 bool 268 depends on FSL_EMB_PERF_EVENT && E500 269 default y 270 271config 4xx 272 bool 273 depends on 40x || 44x 274 default y 275 276config BOOKE 277 bool 278 depends on E500 || 44x || PPC_BOOK3E 279 default y 280 281config FSL_BOOKE 282 bool 283 depends on E500 && PPC32 284 default y 285 286# this is for common code between PPC32 & PPC64 FSL BOOKE 287config PPC_FSL_BOOK3E 288 bool 289 select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 290 select FSL_EMB_PERFMON 291 select PPC_SMP_MUXED_IPI 292 select PPC_DOORBELL 293 default y if FSL_BOOKE 294 295config PTE_64BIT 296 bool 297 depends on 44x || E500 || PPC_86xx 298 default y if PHYS_64BIT 299 300config PHYS_64BIT 301 bool 'Large physical address support' if E500 || PPC_86xx 302 depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx 303 select PHYS_ADDR_T_64BIT 304 help 305 This option enables kernel support for larger than 32-bit physical 306 addresses. This feature may not be available on all cores. 307 308 If you have more than 3.5GB of RAM or so, you also need to enable 309 SWIOTLB under Kernel Options for this to work. The actual number 310 is platform-dependent. 311 312 If in doubt, say N here. 313 314config ALTIVEC 315 bool "AltiVec Support" 316 depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 || (PPC_E500MC && PPC64) 317 select PPC_FPU 318 help 319 This option enables kernel support for the Altivec extensions to the 320 PowerPC processor. The kernel currently supports saving and restoring 321 altivec registers, and turning on the 'altivec enable' bit so user 322 processes can execute altivec instructions. 323 324 This option is only usefully if you have a processor that supports 325 altivec (G4, otherwise known as 74xx series), but does not have 326 any affect on a non-altivec cpu (it does, however add code to the 327 kernel). 328 329 If in doubt, say Y here. 330 331config VSX 332 bool "VSX Support" 333 depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU 334 help 335 336 This option enables kernel support for the Vector Scaler extensions 337 to the PowerPC processor. The kernel currently supports saving and 338 restoring VSX registers, and turning on the 'VSX enable' bit so user 339 processes can execute VSX instructions. 340 341 This option is only useful if you have a processor that supports 342 VSX (P7 and above), but does not have any affect on a non-VSX 343 CPUs (it does, however add code to the kernel). 344 345 If in doubt, say Y here. 346 347config SPE_POSSIBLE 348 def_bool y 349 depends on E500 && !PPC_E500MC 350 351config SPE 352 bool "SPE Support" 353 depends on SPE_POSSIBLE 354 default y 355 help 356 This option enables kernel support for the Signal Processing 357 Extensions (SPE) to the PowerPC processor. The kernel currently 358 supports saving and restoring SPE registers, and turning on the 359 'spe enable' bit so user processes can execute SPE instructions. 360 361 This option is only useful if you have a processor that supports 362 SPE (e500, otherwise known as 85xx series), but does not have any 363 effect on a non-spe cpu (it does, however add code to the kernel). 364 365 If in doubt, say Y here. 366 367config PPC_RADIX_MMU 368 bool "Radix MMU Support" 369 depends on PPC_BOOK3S_64 370 select ARCH_HAS_GIGANTIC_PAGE 371 default y 372 help 373 Enable support for the Power ISA 3.0 Radix style MMU. Currently this 374 is only implemented by IBM Power9 CPUs, if you don't have one of them 375 you can probably disable this. 376 377config PPC_RADIX_MMU_DEFAULT 378 bool "Default to using the Radix MMU when possible" 379 depends on PPC_RADIX_MMU 380 default y 381 help 382 When the hardware supports the Radix MMU, default to using it unless 383 "disable_radix[=yes]" is specified on the kernel command line. 384 385 If this option is disabled, the Hash MMU will be used by default, 386 unless "disable_radix=no" is specified on the kernel command line. 387 388 If you're unsure, say Y. 389 390config PPC_HAVE_KUEP 391 bool 392 393config PPC_KUEP 394 bool "Kernel Userspace Execution Prevention" 395 depends on PPC_HAVE_KUEP 396 default y 397 help 398 Enable support for Kernel Userspace Execution Prevention (KUEP) 399 400 If you're unsure, say Y. 401 402config PPC_HAVE_KUAP 403 bool 404 405config PPC_KUAP 406 bool "Kernel Userspace Access Protection" 407 depends on PPC_HAVE_KUAP 408 default y 409 help 410 Enable support for Kernel Userspace Access Protection (KUAP) 411 412 If you're unsure, say Y. 413 414config PPC_KUAP_DEBUG 415 bool "Extra debugging for Kernel Userspace Access Protection" 416 depends on PPC_KUAP && (PPC_RADIX_MMU || PPC32) 417 help 418 Add extra debugging for Kernel Userspace Access Protection (KUAP) 419 If you're unsure, say N. 420 421config PPC_PKEY 422 def_bool y 423 depends on PPC_BOOK3S_64 424 depends on PPC_MEM_KEYS || PPC_KUAP || PPC_KUEP 425 426 427config PPC_MMU_NOHASH 428 def_bool y 429 depends on !PPC_BOOK3S 430 431config PPC_BOOK3E_MMU 432 def_bool y 433 depends on FSL_BOOKE || PPC_BOOK3E 434 435config PPC_MM_SLICES 436 bool 437 438config PPC_HAVE_PMU_SUPPORT 439 bool 440 441config PMU_SYSFS 442 bool "Create PMU SPRs sysfs file" 443 default n 444 help 445 This option enables sysfs file creation for PMU SPRs like MMCR* and PMC*. 446 447config PPC_PERF_CTRS 448 def_bool y 449 depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT 450 help 451 This enables the powerpc-specific perf_event back-end. 452 453config FORCE_SMP 454 # Allow platforms to force SMP=y by selecting this 455 bool 456 select SMP 457 458config SMP 459 depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x 460 select GENERIC_IRQ_MIGRATION 461 bool "Symmetric multi-processing support" if !FORCE_SMP 462 help 463 This enables support for systems with more than one CPU. If you have 464 a system with only one CPU, say N. If you have a system with more 465 than one CPU, say Y. Note that the kernel does not currently 466 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 467 since they have inadequate hardware support for multiprocessor 468 operation. 469 470 If you say N here, the kernel will run on single and multiprocessor 471 machines, but will use only one CPU of a multiprocessor machine. If 472 you say Y here, the kernel will run on single-processor machines. 473 On a single-processor machine, the kernel will run faster if you say 474 N here. 475 476 If you don't know what to do here, say N. 477 478config NR_CPUS 479 int "Maximum number of CPUs (2-8192)" if SMP 480 range 2 8192 if SMP 481 default "1" if !SMP 482 default "32" if PPC64 483 default "4" 484 485config NOT_COHERENT_CACHE 486 bool 487 depends on 4xx || PPC_8xx || PPC_MPC512x || \ 488 GAMECUBE_COMMON || AMIGAONE 489 select ARCH_HAS_DMA_PREP_COHERENT 490 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 491 select ARCH_HAS_SYNC_DMA_FOR_CPU 492 select DMA_DIRECT_REMAP 493 default n if PPC_47x 494 default y 495 496config CHECK_CACHE_COHERENCY 497 bool 498 499config PPC_DOORBELL 500 bool 501 502endmenu 503 504config VDSO32 505 def_bool y 506 depends on PPC32 || COMPAT 507 help 508 This symbol controls whether we build the 32-bit VDSO. We obviously 509 want to do that if we're building a 32-bit kernel. If we're building 510 a 64-bit kernel then we only want a 32-bit VDSO if we're also enabling 511 COMPAT. 512 513choice 514 prompt "Endianness selection" 515 default CPU_BIG_ENDIAN 516 help 517 This option selects whether a big endian or little endian kernel will 518 be built. 519 520config CPU_BIG_ENDIAN 521 bool "Build big endian kernel" 522 help 523 Build a big endian kernel. 524 525 If unsure, select this option. 526 527config CPU_LITTLE_ENDIAN 528 bool "Build little endian kernel" 529 depends on PPC_BOOK3S_64 530 select PPC64_BOOT_WRAPPER 531 help 532 Build a little endian kernel. 533 534 Note that if cross compiling a little endian kernel, 535 CROSS_COMPILE must point to a toolchain capable of targeting 536 little endian powerpc. 537 538endchoice 539 540config PPC64_BOOT_WRAPPER 541 def_bool n 542 depends on CPU_LITTLE_ENDIAN 543