arch/powerpc/platforms/Kconfig.cputype

   1 # SPDX-License-Identifier: GPL-2.0
   2 config 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
  10 menu "Processor support"
  11 choice
  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
  25 config PPC_BOOK3S_32
  26         bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
  27         select PPC_FPU
  28
  29 config PPC_85xx
  30         bool "Freescale 85xx"
  31         select E500
  32
  33 config PPC_8xx
  34         bool "Freescale 8xx"
  35         select FSL_SOC
  36         select PPC_LIB_RHEAP
  37         select SYS_SUPPORTS_HUGETLBFS
  38
  39 config 40x
  40         bool "AMCC 40x"
  41         select PPC_DCR_NATIVE
  42         select PPC_UDBG_16550
  43         select 4xx_SOC
  44         select PPC_PCI_CHOICE
  45
  46 config 44x
  47         bool "AMCC 44x, 46x or 47x"
  48         select PPC_DCR_NATIVE
  49         select PPC_UDBG_16550
  50         select 4xx_SOC
  51         select PPC_PCI_CHOICE
  52         select PHYS_64BIT
  53
  54 config E200
  55         bool "Freescale e200"
  56
  57 endchoice
  58
  59 choice
  60         prompt "Processor Type"
  61         depends on PPC64
  62         help
  63           There are two families of 64 bit PowerPC chips supported.
  64           The most common ones are the desktop and server CPUs
  65           (POWER4, POWER5, 970, POWER5+, POWER6, POWER7, POWER8 ...)
  66
  67           The other are the "embedded" processors compliant with the
  68           "Book 3E" variant of the architecture
  69
  70 config PPC_BOOK3S_64
  71         bool "Server processors"
  72         select PPC_FPU
  73         select PPC_HAVE_PMU_SUPPORT
  74         select SYS_SUPPORTS_HUGETLBFS
  75         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  76         select ARCH_SUPPORTS_NUMA_BALANCING
  77         select IRQ_WORK
  78         select HAVE_KERNEL_XZ
  79
  80 config PPC_BOOK3E_64
  81         bool "Embedded processors"
  82         select PPC_FPU # Make it a choice ?
  83         select PPC_SMP_MUXED_IPI
  84         select PPC_DOORBELL
  85
  86 endchoice
  87
  88 choice
  89         prompt "CPU selection"
  90         depends on PPC64
  91         default POWER8_CPU if CPU_LITTLE_ENDIAN
  92         default GENERIC_CPU
  93         help
  94           This will create a kernel which is optimised for a particular CPU.
  95           The resulting kernel may not run on other CPUs, so use this with care.
  96
  97           If unsure, select Generic.
  98
  99 config GENERIC_CPU
 100         bool "Generic"
 101         depends on !CPU_LITTLE_ENDIAN
 102
 103 config CELL_CPU
 104         bool "Cell Broadband Engine"
 105         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 106
 107 config POWER4_CPU
 108         bool "POWER4"
 109         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 110
 111 config POWER5_CPU
 112         bool "POWER5"
 113         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 114
 115 config POWER6_CPU
 116         bool "POWER6"
 117         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 118
 119 config POWER7_CPU
 120         bool "POWER7"
 121         depends on PPC_BOOK3S_64
 122         select ARCH_HAS_FAST_MULTIPLIER
 123
 124 config POWER8_CPU
 125         bool "POWER8"
 126         depends on PPC_BOOK3S_64
 127         select ARCH_HAS_FAST_MULTIPLIER
 128
 129 config E5500_CPU
 130         bool "Freescale e5500"
 131         depends on E500
 132
 133 config E6500_CPU
 134         bool "Freescale e6500"
 135         depends on E500
 136
 137 endchoice
 138
 139 config PPC_BOOK3S
 140         def_bool y
 141         depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
 142
 143 config PPC_BOOK3E
 144         def_bool y
 145         depends on PPC_BOOK3E_64
 146
 147 config 6xx
 148         def_bool y
 149         depends on PPC32 && PPC_BOOK3S
 150         select PPC_HAVE_PMU_SUPPORT
 151
 152 config E500
 153         select FSL_EMB_PERFMON
 154         select PPC_FSL_BOOK3E
 155         bool
 156
 157 config PPC_E500MC
 158         bool "e500mc Support"
 159         select PPC_FPU
 160         select COMMON_CLK
 161         depends on E500
 162         help
 163           This must be enabled for running on e500mc (and derivatives
 164           such as e5500/e6500), and must be disabled for running on
 165           e500v1 or e500v2.
 166
 167 config PPC_FPU
 168         bool
 169         default y if PPC64
 170
 171 config PPC_8xx_PERF_EVENT
 172         bool "PPC 8xx perf events"
 173         depends on PPC_8xx && PERF_EVENTS
 174         help
 175           This is Performance Events support for PPC 8xx. The 8xx doesn't
 176           have a PMU but some events are emulated using 8xx features.
 177
 178 config FSL_EMB_PERFMON
 179         bool "Freescale Embedded Perfmon"
 180         depends on E500 || PPC_83xx
 181         help
 182           This is the Performance Monitor support found on the e500 core
 183           and some e300 cores (c3 and c4).  Select this only if your
 184           core supports the Embedded Performance Monitor APU
 185
 186 config FSL_EMB_PERF_EVENT
 187         bool
 188         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
 189         default y
 190
 191 config FSL_EMB_PERF_EVENT_E500
 192         bool
 193         depends on FSL_EMB_PERF_EVENT && E500
 194         default y
 195
 196 config 4xx
 197         bool
 198         depends on 40x || 44x
 199         default y
 200
 201 config BOOKE
 202         bool
 203         depends on E200 || E500 || 44x || PPC_BOOK3E
 204         default y
 205
 206 config FSL_BOOKE
 207         bool
 208         depends on (E200 || E500) && PPC32
 209         default y
 210
 211 # this is for common code between PPC32 & PPC64 FSL BOOKE
 212 config PPC_FSL_BOOK3E
 213         bool
 214         select FSL_EMB_PERFMON
 215         select PPC_SMP_MUXED_IPI
 216         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
 217         select PPC_DOORBELL
 218         default y if FSL_BOOKE
 219
 220 config PTE_64BIT
 221         bool
 222         depends on 44x || E500 || PPC_86xx
 223         default y if PHYS_64BIT
 224
 225 config PHYS_64BIT
 226         bool 'Large physical address support' if E500 || PPC_86xx
 227         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
 228         ---help---
 229           This option enables kernel support for larger than 32-bit physical
 230           addresses.  This feature may not be available on all cores.
 231
 232           If you have more than 3.5GB of RAM or so, you also need to enable
 233           SWIOTLB under Kernel Options for this to work.  The actual number
 234           is platform-dependent.
 235
 236           If in doubt, say N here.
 237
 238 config ALTIVEC
 239         bool "AltiVec Support"
 240         depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
 241         ---help---
 242           This option enables kernel support for the Altivec extensions to the
 243           PowerPC processor. The kernel currently supports saving and restoring
 244           altivec registers, and turning on the 'altivec enable' bit so user
 245           processes can execute altivec instructions.
 246
 247           This option is only usefully if you have a processor that supports
 248           altivec (G4, otherwise known as 74xx series), but does not have
 249           any affect on a non-altivec cpu (it does, however add code to the
 250           kernel).
 251
 252           If in doubt, say Y here.
 253
 254 config VSX
 255         bool "VSX Support"
 256         depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
 257         ---help---
 258
 259           This option enables kernel support for the Vector Scaler extensions
 260           to the PowerPC processor. The kernel currently supports saving and
 261           restoring VSX registers, and turning on the 'VSX enable' bit so user
 262           processes can execute VSX instructions.
 263
 264           This option is only useful if you have a processor that supports
 265           VSX (P7 and above), but does not have any affect on a non-VSX
 266           CPUs (it does, however add code to the kernel).
 267
 268           If in doubt, say Y here.
 269
 270 config SPE_POSSIBLE
 271         def_bool y
 272         depends on E200 || (E500 && !PPC_E500MC)
 273
 274 config SPE
 275         bool "SPE Support"
 276         depends on SPE_POSSIBLE
 277         default y
 278         ---help---
 279           This option enables kernel support for the Signal Processing
 280           Extensions (SPE) to the PowerPC processor. The kernel currently
 281           supports saving and restoring SPE registers, and turning on the
 282           'spe enable' bit so user processes can execute SPE instructions.
 283
 284           This option is only useful if you have a processor that supports
 285           SPE (e500, otherwise known as 85xx series), but does not have any
 286           effect on a non-spe cpu (it does, however add code to the kernel).
 287
 288           If in doubt, say Y here.
 289
 290 config PPC_STD_MMU
 291         def_bool y
 292         depends on PPC_BOOK3S
 293
 294 config PPC_STD_MMU_32
 295         def_bool y
 296         depends on PPC_STD_MMU && PPC32
 297
 298 config PPC_STD_MMU_64
 299         def_bool y
 300         depends on PPC_STD_MMU && PPC64
 301
 302 config PPC_RADIX_MMU
 303         bool "Radix MMU Support"
 304         depends on PPC_BOOK3S_64
 305         select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
 306         default y
 307         help
 308           Enable support for the Power ISA 3.0 Radix style MMU. Currently this
 309           is only implemented by IBM Power9 CPUs, if you don't have one of them
 310           you can probably disable this.
 311
 312 config ARCH_ENABLE_HUGEPAGE_MIGRATION
 313         def_bool y
 314         depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
 315
 316
 317 config PPC_MMU_NOHASH
 318         def_bool y
 319         depends on !PPC_STD_MMU
 320
 321 config PPC_BOOK3E_MMU
 322         def_bool y
 323         depends on FSL_BOOKE || PPC_BOOK3E
 324
 325 config PPC_MM_SLICES
 326         bool
 327         default y if PPC_STD_MMU_64
 328         default n
 329
 330 config PPC_HAVE_PMU_SUPPORT
 331        bool
 332
 333 config PPC_PERF_CTRS
 334        def_bool y
 335        depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
 336        help
 337          This enables the powerpc-specific perf_event back-end.
 338
 339 config FORCE_SMP
 340         # Allow platforms to force SMP=y by selecting this
 341         bool
 342         default n
 343         select SMP
 344
 345 config SMP
 346         depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
 347         select GENERIC_IRQ_MIGRATION
 348         bool "Symmetric multi-processing support" if !FORCE_SMP
 349         ---help---
 350           This enables support for systems with more than one CPU. If you have
 351           a system with only one CPU, say N. If you have a system with more
 352           than one CPU, say Y.  Note that the kernel does not currently
 353           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 354           since they have inadequate hardware support for multiprocessor
 355           operation.
 356
 357           If you say N here, the kernel will run on single and multiprocessor
 358           machines, but will use only one CPU of a multiprocessor machine. If
 359           you say Y here, the kernel will run on single-processor machines.
 360           On a single-processor machine, the kernel will run faster if you say
 361           N here.
 362
 363           If you don't know what to do here, say N.
 364
 365 config NR_CPUS
 366         int "Maximum number of CPUs (2-8192)"
 367         range 2 8192
 368         depends on SMP
 369         default "32" if PPC64
 370         default "4"
 371
 372 config NOT_COHERENT_CACHE
 373         bool
 374         depends on 4xx || PPC_8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
 375         default n if PPC_47x
 376         default y
 377
 378 config CHECK_CACHE_COHERENCY
 379         bool
 380
 381 config PPC_DOORBELL
 382         bool
 383         default n
 384
 385 endmenu
 386
 387 config VDSO32
 388         def_bool y
 389         depends on PPC32 || CPU_BIG_ENDIAN
 390         help
 391           This symbol controls whether we build the 32-bit VDSO. We obviously
 392           want to do that if we're building a 32-bit kernel. If we're building
 393           a 64-bit kernel then we only want a 32-bit VDSO if we're building for
 394           big endian. That is because the only little endian configuration we
 395           support is ppc64le which is 64-bit only.
 396
 397 choice
 398         prompt "Endianness selection"
 399         default CPU_BIG_ENDIAN
 400         help
 401           This option selects whether a big endian or little endian kernel will
 402           be built.
 403
 404 config CPU_BIG_ENDIAN
 405         bool "Build big endian kernel"
 406         help
 407           Build a big endian kernel.
 408
 409           If unsure, select this option.
 410
 411 config CPU_LITTLE_ENDIAN
 412         bool "Build little endian kernel"
 413         depends on PPC_BOOK3S_64
 414         select PPC64_BOOT_WRAPPER
 415         help
 416           Build a little endian kernel.
 417
 418           Note that if cross compiling a little endian kernel,
 419           CROSS_COMPILE must point to a toolchain capable of targeting
 420           little endian powerpc.
 421
 422 endchoice
 423
 424 config PPC64_BOOT_WRAPPER
 425         def_bool n
 426         depends on CPU_LITTLE_ENDIAN