# SPDX-License-Identifier: GPL-2.0 config PPC64 bool "64-bit kernel" select ZLIB_DEFLATE help This option selects whether a 32-bit or a 64-bit kernel will be built. menu "Processor support" choice prompt "Processor Type" depends on PPC32 help There are five families of 32 bit PowerPC chips supported. The most common ones are the desktop and server CPUs (601, 603, 604, 740, 750, 74xx) CPUs from Freescale and IBM, with their embedded 512x/52xx/82xx/83xx/86xx counterparts. The other embedded parts, namely 4xx, 8xx, e200 (55xx) and e500 (85xx) each form a family of their own that is not compatible with the others. If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. config PPC_BOOK3S_32 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" select PPC_FPU select PPC_HAVE_PMU_SUPPORT config PPC_85xx bool "Freescale 85xx" select E500 config PPC_8xx bool "Freescale 8xx" select FSL_SOC select SYS_SUPPORTS_HUGETLBFS config 40x bool "AMCC 40x" select PPC_DCR_NATIVE select PPC_UDBG_16550 select 4xx_SOC select HAVE_PCI config 44x bool "AMCC 44x, 46x or 47x" select PPC_DCR_NATIVE select PPC_UDBG_16550 select 4xx_SOC select HAVE_PCI select PHYS_64BIT config E200 bool "Freescale e200" endchoice choice prompt "Processor Type" depends on PPC64 help There are two families of 64 bit PowerPC chips supported. The most common ones are the desktop and server CPUs (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...) The other are the "embedded" processors compliant with the "Book 3E" variant of the architecture config PPC_BOOK3S_64 bool "Server processors" select PPC_FPU select PPC_HAVE_PMU_SUPPORT select SYS_SUPPORTS_HUGETLBFS select HAVE_ARCH_TRANSPARENT_HUGEPAGE select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_SUPPORTS_NUMA_BALANCING select IRQ_WORK config PPC_BOOK3E_64 bool "Embedded processors" select PPC_FPU # Make it a choice ? select PPC_SMP_MUXED_IPI select PPC_DOORBELL endchoice choice prompt "CPU selection" default GENERIC_CPU help This will create a kernel which is optimised for a particular CPU. The resulting kernel may not run on other CPUs, so use this with care. If unsure, select Generic. config GENERIC_CPU bool "Generic (POWER4 and above)" depends on PPC64 && !CPU_LITTLE_ENDIAN config GENERIC_CPU bool "Generic (POWER8 and above)" depends on PPC64 && CPU_LITTLE_ENDIAN select ARCH_HAS_FAST_MULTIPLIER config GENERIC_CPU bool "Generic 32 bits powerpc" depends on PPC32 && !PPC_8xx config CELL_CPU bool "Cell Broadband Engine" depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN config POWER5_CPU bool "POWER5" depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN config POWER6_CPU bool "POWER6" depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN config POWER7_CPU bool "POWER7" depends on PPC_BOOK3S_64 select ARCH_HAS_FAST_MULTIPLIER config POWER8_CPU bool "POWER8" depends on PPC_BOOK3S_64 select ARCH_HAS_FAST_MULTIPLIER config POWER9_CPU bool "POWER9" depends on PPC_BOOK3S_64 select ARCH_HAS_FAST_MULTIPLIER config E5500_CPU bool "Freescale e5500" depends on E500 config E6500_CPU bool "Freescale e6500" depends on E500 config 860_CPU bool "8xx family" depends on PPC_8xx config E300C2_CPU bool "e300c2 (832x)" depends on PPC_BOOK3S_32 config E300C3_CPU bool "e300c3 (831x)" depends on PPC_BOOK3S_32 config G4_CPU bool "G4 (74xx)" depends on PPC_BOOK3S_32 select ALTIVEC endchoice config TARGET_CPU_BOOL bool default !GENERIC_CPU config TARGET_CPU string depends on TARGET_CPU_BOOL default "cell" if CELL_CPU default "power5" if POWER5_CPU default "power6" if POWER6_CPU default "power7" if POWER7_CPU default "power8" if POWER8_CPU default "power9" if POWER9_CPU default "860" if 860_CPU default "e300c2" if E300C2_CPU default "e300c3" if E300C3_CPU default "G4" if G4_CPU config PPC_BOOK3S def_bool y depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 config PPC_BOOK3E def_bool y depends on PPC_BOOK3E_64 config E500 select FSL_EMB_PERFMON select PPC_FSL_BOOK3E bool config PPC_E500MC bool "e500mc Support" select PPC_FPU select COMMON_CLK depends on E500 help This must be enabled for running on e500mc (and derivatives such as e5500/e6500), and must be disabled for running on e500v1 or e500v2. config PPC_FPU bool default y if PPC64 config FSL_EMB_PERFMON bool "Freescale Embedded Perfmon" depends on E500 || PPC_83xx help This is the Performance Monitor support found on the e500 core and some e300 cores (c3 and c4). Select this only if your core supports the Embedded Performance Monitor APU config FSL_EMB_PERF_EVENT bool depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS default y config FSL_EMB_PERF_EVENT_E500 bool depends on FSL_EMB_PERF_EVENT && E500 default y config 4xx bool depends on 40x || 44x default y config BOOKE bool depends on E200 || E500 || 44x || PPC_BOOK3E default y config FSL_BOOKE bool depends on (E200 || E500) && PPC32 default y # this is for common code between PPC32 & PPC64 FSL BOOKE config PPC_FSL_BOOK3E bool select FSL_EMB_PERFMON select PPC_SMP_MUXED_IPI select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 select PPC_DOORBELL default y if FSL_BOOKE config PTE_64BIT bool depends on 44x || E500 || PPC_86xx default y if PHYS_64BIT config PHYS_64BIT bool 'Large physical address support' if E500 || PPC_86xx depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx select PHYS_ADDR_T_64BIT ---help--- This option enables kernel support for larger than 32-bit physical addresses. This feature may not be available on all cores. If you have more than 3.5GB of RAM or so, you also need to enable SWIOTLB under Kernel Options for this to work. The actual number is platform-dependent. If in doubt, say N here. config ALTIVEC bool "AltiVec Support" depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 || (PPC_E500MC && PPC64) ---help--- This option enables kernel support for the Altivec extensions to the PowerPC processor. The kernel currently supports saving and restoring altivec registers, and turning on the 'altivec enable' bit so user processes can execute altivec instructions. This option is only usefully if you have a processor that supports altivec (G4, otherwise known as 74xx series), but does not have any affect on a non-altivec cpu (it does, however add code to the kernel). If in doubt, say Y here. config VSX bool "VSX Support" depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU ---help--- This option enables kernel support for the Vector Scaler extensions to the PowerPC processor. The kernel currently supports saving and restoring VSX registers, and turning on the 'VSX enable' bit so user processes can execute VSX instructions. This option is only useful if you have a processor that supports VSX (P7 and above), but does not have any affect on a non-VSX CPUs (it does, however add code to the kernel). If in doubt, say Y here. config SPE_POSSIBLE def_bool y depends on E200 || (E500 && !PPC_E500MC) config SPE bool "SPE Support" depends on SPE_POSSIBLE default y ---help--- This option enables kernel support for the Signal Processing Extensions (SPE) to the PowerPC processor. The kernel currently supports saving and restoring SPE registers, and turning on the 'spe enable' bit so user processes can execute SPE instructions. This option is only useful if you have a processor that supports SPE (e500, otherwise known as 85xx series), but does not have any effect on a non-spe cpu (it does, however add code to the kernel). If in doubt, say Y here. config ARCH_ENABLE_SPLIT_PMD_PTLOCK def_bool y depends on PPC_BOOK3S_64 config PPC_RADIX_MMU bool "Radix MMU Support" depends on PPC_BOOK3S_64 && HUGETLB_PAGE select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA default y help Enable support for the Power ISA 3.0 Radix style MMU. Currently this is only implemented by IBM Power9 CPUs, if you don't have one of them you can probably disable this. config PPC_RADIX_MMU_DEFAULT bool "Default to using the Radix MMU when possible" depends on PPC_RADIX_MMU default y help When the hardware supports the Radix MMU, default to using it unless "disable_radix[=yes]" is specified on the kernel command line. If this option is disabled, the Hash MMU will be used by default, unless "disable_radix=no" is specified on the kernel command line. If you're unsure, say Y. config ARCH_ENABLE_HUGEPAGE_MIGRATION def_bool y depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION config PPC_MMU_NOHASH def_bool y depends on !PPC_BOOK3S config PPC_BOOK3E_MMU def_bool y depends on FSL_BOOKE || PPC_BOOK3E config PPC_MM_SLICES bool default y if PPC_BOOK3S_64 default y if PPC_8xx && HUGETLB_PAGE config PPC_HAVE_PMU_SUPPORT bool config PPC_PERF_CTRS def_bool y depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT help This enables the powerpc-specific perf_event back-end. config FORCE_SMP # Allow platforms to force SMP=y by selecting this bool select SMP config SMP depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x select GENERIC_IRQ_MIGRATION bool "Symmetric multi-processing support" if !FORCE_SMP ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, say N. If you have a system with more than one CPU, say Y. Note that the kernel does not currently support SMP machines with 603/603e/603ev or PPC750 ("G3") processors since they have inadequate hardware support for multiprocessor operation. If you say N here, the kernel will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on single-processor machines. On a single-processor machine, the kernel will run faster if you say N here. If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs (2-8192)" range 2 8192 depends on SMP default "32" if PPC64 default "4" config NOT_COHERENT_CACHE bool depends on 4xx || PPC_8xx || E200 || PPC_MPC512x || \ GAMECUBE_COMMON || AMIGAONE select ARCH_HAS_DMA_COHERENT_TO_PFN select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_HAS_SYNC_DMA_FOR_CPU default n if PPC_47x default y config CHECK_CACHE_COHERENCY bool config PPC_DOORBELL bool endmenu config VDSO32 def_bool y depends on PPC32 || CPU_BIG_ENDIAN help This symbol controls whether we build the 32-bit VDSO. We obviously want to do that if we're building a 32-bit kernel. If we're building a 64-bit kernel then we only want a 32-bit VDSO if we're building for big endian. That is because the only little endian configuration we support is ppc64le which is 64-bit only. choice prompt "Endianness selection" default CPU_BIG_ENDIAN help This option selects whether a big endian or little endian kernel will be built. config CPU_BIG_ENDIAN bool "Build big endian kernel" help Build a big endian kernel. If unsure, select this option. config CPU_LITTLE_ENDIAN bool "Build little endian kernel" depends on PPC_BOOK3S_64 select PPC64_BOOT_WRAPPER help Build a little endian kernel. Note that if cross compiling a little endian kernel, CROSS_COMPILE must point to a toolchain capable of targeting little endian powerpc. endchoice config PPC64_BOOT_WRAPPER def_bool n depends on CPU_LITTLE_ENDIAN