# SPDX-License-Identifier: GPL-2.0 config PPC32 bool default y if !PPC64 select KASAN_VMALLOC if KASAN && MODULES 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 (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 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" imply PPC_FPU select PPC_HAVE_PMU_SUPPORT select PPC_HAVE_KUEP select PPC_HAVE_KUAP select HAVE_ARCH_VMAP_STACK config PPC_85xx bool "Freescale 85xx" select E500 config PPC_8xx bool "Freescale 8xx" select ARCH_SUPPORTS_HUGETLBFS select FSL_SOC select PPC_HAVE_KUEP select PPC_HAVE_KUAP select HAVE_ARCH_VMAP_STACK select 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 endchoice config PPC_BOOK3S_603 bool "Support for 603 SW loaded TLB" depends on PPC_BOOK3S_32 default y help Provide support for processors based on the 603 cores. Those processors don't have a HASH MMU and provide SW TLB loading. config PPC_BOOK3S_604 bool "Support for 604+ HASH MMU" if PPC_BOOK3S_603 depends on PPC_BOOK3S_32 default y help Provide support for processors not based on the 603 cores. Those processors have a HASH MMU. 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 HAVE_ARCH_TRANSPARENT_HUGEPAGE select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION select ARCH_ENABLE_PMD_SPLIT_PTLOCK select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_SUPPORTS_HUGETLBFS select ARCH_SUPPORTS_NUMA_BALANCING select IRQ_WORK select PPC_MM_SLICES select PPC_HAVE_KUEP select PPC_HAVE_KUAP 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_REGS bool config PPC_FPU bool "Support for Floating Point Unit (FPU)" if PPC_MPC832x default y if PPC64 select PPC_FPU_REGS help This must be enabled to support the Floating Point Unit Most 6xx have an FPU but e300c2 core (mpc832x) don't have an FPU, so when building an embedded kernel for that target you can disable FPU support. If unsure say Y. 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 E500 || 44x || PPC_BOOK3E default y config FSL_BOOKE bool depends on E500 && PPC32 default y # this is for common code between PPC32 & PPC64 FSL BOOKE config PPC_FSL_BOOK3E bool select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 select FSL_EMB_PERFMON select PPC_SMP_MUXED_IPI 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) select PPC_FPU 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 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 PPC_RADIX_MMU bool "Radix MMU Support" depends on PPC_BOOK3S_64 select ARCH_HAS_GIGANTIC_PAGE 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 PPC_HAVE_KUEP bool config PPC_KUEP bool "Kernel Userspace Execution Prevention" depends on PPC_HAVE_KUEP default y if !PPC_BOOK3S_32 help Enable support for Kernel Userspace Execution Prevention (KUEP) If you're unsure, say Y. config PPC_HAVE_KUAP bool config PPC_KUAP bool "Kernel Userspace Access Protection" depends on PPC_HAVE_KUAP default y if !PPC_BOOK3S_32 help Enable support for Kernel Userspace Access Protection (KUAP) If you're unsure, say Y. config PPC_KUAP_DEBUG bool "Extra debugging for Kernel Userspace Access Protection" depends on PPC_KUAP && (PPC_RADIX_MMU || PPC32) help Add extra debugging for Kernel Userspace Access Protection (KUAP) If you're unsure, say N. config PPC_PKEY def_bool y depends on PPC_BOOK3S_64 depends on PPC_MEM_KEYS || PPC_KUAP || PPC_KUEP config PPC_MMU_NOHASH def_bool y depends on !PPC_BOOK3S config PPC_MMU_NOHASH_32 def_bool y depends on PPC_MMU_NOHASH && PPC32 config PPC_BOOK3E_MMU def_bool y depends on FSL_BOOKE || PPC_BOOK3E config PPC_MM_SLICES bool config PPC_HAVE_PMU_SUPPORT bool config PMU_SYSFS bool "Create PMU SPRs sysfs file" default n help This option enables sysfs file creation for PMU SPRs like MMCR* and PMC*. 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 || PPC_MPC512x || \ GAMECUBE_COMMON || AMIGAONE select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_HAS_SYNC_DMA_FOR_CPU select DMA_DIRECT_REMAP 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 || COMPAT 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 also enabling COMPAT. 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