# SPDX-License-Identifier: GPL-2.0
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config PPC64
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bool "64-bit kernel"
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default n
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select ZLIB_DEFLATE
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help
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This option selects whether a 32-bit or a 64-bit kernel
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will be built.
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menu "Processor support"
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choice
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prompt "Processor Type"
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depends on PPC32
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help
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There are five families of 32 bit PowerPC chips supported.
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The most common ones are the desktop and server CPUs (601, 603,
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604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
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embedded 512x/52xx/82xx/83xx/86xx counterparts.
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The other embedded parts, namely 4xx, 8xx, e200 (55xx) and e500
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(85xx) each form a family of their own that is not compatible
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with the others.
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If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
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config PPC_BOOK3S_32
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bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
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select PPC_FPU
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config PPC_85xx
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bool "Freescale 85xx"
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select E500
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config PPC_8xx
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bool "Freescale 8xx"
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select FSL_SOC
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select SYS_SUPPORTS_HUGETLBFS
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config 40x
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bool "AMCC 40x"
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select PPC_DCR_NATIVE
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select PPC_UDBG_16550
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select 4xx_SOC
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select PPC_PCI_CHOICE
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config 44x
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bool "AMCC 44x, 46x or 47x"
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select PPC_DCR_NATIVE
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select PPC_UDBG_16550
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select 4xx_SOC
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select PPC_PCI_CHOICE
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select PHYS_64BIT
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config E200
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bool "Freescale e200"
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endchoice
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choice
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prompt "Processor Type"
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depends on PPC64
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help
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There are two families of 64 bit PowerPC chips supported.
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The most common ones are the desktop and server CPUs
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(POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...)
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The other are the "embedded" processors compliant with the
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"Book 3E" variant of the architecture
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config PPC_BOOK3S_64
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bool "Server processors"
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select PPC_FPU
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select PPC_HAVE_PMU_SUPPORT
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select SYS_SUPPORTS_HUGETLBFS
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE
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select ARCH_SUPPORTS_NUMA_BALANCING
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select IRQ_WORK
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config PPC_BOOK3E_64
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bool "Embedded processors"
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select PPC_FPU # Make it a choice ?
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select PPC_SMP_MUXED_IPI
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select PPC_DOORBELL
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endchoice
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choice
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prompt "CPU selection"
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default GENERIC_CPU
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help
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This will create a kernel which is optimised for a particular CPU.
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The resulting kernel may not run on other CPUs, so use this with care.
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If unsure, select Generic.
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config GENERIC_CPU
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bool "Generic (POWER4 and above)"
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depends on PPC64 && !CPU_LITTLE_ENDIAN
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config GENERIC_CPU
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bool "Generic (POWER8 and above)"
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depends on PPC64 && CPU_LITTLE_ENDIAN
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select ARCH_HAS_FAST_MULTIPLIER
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config GENERIC_CPU
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bool "Generic 32 bits powerpc"
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depends on PPC32 && !PPC_8xx
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config CELL_CPU
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bool "Cell Broadband Engine"
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depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
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config POWER5_CPU
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bool "POWER5"
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depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
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config POWER6_CPU
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bool "POWER6"
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depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
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config POWER7_CPU
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bool "POWER7"
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depends on PPC_BOOK3S_64
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select ARCH_HAS_FAST_MULTIPLIER
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config POWER8_CPU
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bool "POWER8"
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depends on PPC_BOOK3S_64
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select ARCH_HAS_FAST_MULTIPLIER
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config POWER9_CPU
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bool "POWER9"
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depends on PPC_BOOK3S_64
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select ARCH_HAS_FAST_MULTIPLIER
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config E5500_CPU
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bool "Freescale e5500"
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depends on E500
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config E6500_CPU
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bool "Freescale e6500"
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depends on E500
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config 860_CPU
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bool "8xx family"
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depends on PPC_8xx
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config E300C2_CPU
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bool "e300c2 (832x)"
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depends on PPC_BOOK3S_32
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config E300C3_CPU
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bool "e300c3 (831x)"
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depends on PPC_BOOK3S_32
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endchoice
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config TARGET_CPU_BOOL
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bool
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default !GENERIC_CPU
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config TARGET_CPU
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string
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depends on TARGET_CPU_BOOL
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default "cell" if CELL_CPU
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default "power5" if POWER5_CPU
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default "power6" if POWER6_CPU
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default "power7" if POWER7_CPU
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default "power8" if POWER8_CPU
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default "power9" if POWER9_CPU
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default "860" if 860_CPU
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default "e300c2" if E300C2_CPU
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default "e300c3" if E300C3_CPU
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config PPC_BOOK3S
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def_bool y
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depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
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config PPC_BOOK3E
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def_bool y
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depends on PPC_BOOK3E_64
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config 6xx
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def_bool y
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depends on PPC32 && PPC_BOOK3S
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select PPC_HAVE_PMU_SUPPORT
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config E500
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select FSL_EMB_PERFMON
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select PPC_FSL_BOOK3E
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bool
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config PPC_E500MC
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bool "e500mc Support"
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select PPC_FPU
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select COMMON_CLK
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depends on E500
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help
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This must be enabled for running on e500mc (and derivatives
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such as e5500/e6500), and must be disabled for running on
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e500v1 or e500v2.
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config PPC_FPU
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bool
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default y if PPC64
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config FSL_EMB_PERFMON
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bool "Freescale Embedded Perfmon"
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depends on E500 || PPC_83xx
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help
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This is the Performance Monitor support found on the e500 core
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and some e300 cores (c3 and c4). Select this only if your
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core supports the Embedded Performance Monitor APU
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config FSL_EMB_PERF_EVENT
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bool
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depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
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default y
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config FSL_EMB_PERF_EVENT_E500
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bool
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depends on FSL_EMB_PERF_EVENT && E500
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default y
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config 4xx
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bool
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depends on 40x || 44x
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default y
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config BOOKE
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bool
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depends on E200 || E500 || 44x || PPC_BOOK3E
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default y
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config FSL_BOOKE
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bool
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depends on (E200 || E500) && PPC32
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default y
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# this is for common code between PPC32 & PPC64 FSL BOOKE
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config PPC_FSL_BOOK3E
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bool
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select FSL_EMB_PERFMON
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select PPC_SMP_MUXED_IPI
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select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
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select PPC_DOORBELL
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default y if FSL_BOOKE
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config PTE_64BIT
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bool
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depends on 44x || E500 || PPC_86xx
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default y if PHYS_64BIT
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config PHYS_64BIT
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bool 'Large physical address support' if E500 || PPC_86xx
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depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
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select PHYS_ADDR_T_64BIT
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---help---
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This option enables kernel support for larger than 32-bit physical
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addresses. This feature may not be available on all cores.
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If you have more than 3.5GB of RAM or so, you also need to enable
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SWIOTLB under Kernel Options for this to work. The actual number
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is platform-dependent.
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If in doubt, say N here.
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config ALTIVEC
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bool "AltiVec Support"
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depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
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---help---
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This option enables kernel support for the Altivec extensions to the
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PowerPC processor. The kernel currently supports saving and restoring
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altivec registers, and turning on the 'altivec enable' bit so user
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processes can execute altivec instructions.
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This option is only usefully if you have a processor that supports
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altivec (G4, otherwise known as 74xx series), but does not have
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any affect on a non-altivec cpu (it does, however add code to the
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kernel).
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If in doubt, say Y here.
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config VSX
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bool "VSX Support"
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depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
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---help---
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This option enables kernel support for the Vector Scaler extensions
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to the PowerPC processor. The kernel currently supports saving and
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restoring VSX registers, and turning on the 'VSX enable' bit so user
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processes can execute VSX instructions.
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This option is only useful if you have a processor that supports
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VSX (P7 and above), but does not have any affect on a non-VSX
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CPUs (it does, however add code to the kernel).
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If in doubt, say Y here.
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config SPE_POSSIBLE
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def_bool y
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depends on E200 || (E500 && !PPC_E500MC)
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config SPE
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bool "SPE Support"
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depends on SPE_POSSIBLE
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default y
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---help---
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This option enables kernel support for the Signal Processing
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Extensions (SPE) to the PowerPC processor. The kernel currently
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supports saving and restoring SPE registers, and turning on the
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'spe enable' bit so user processes can execute SPE instructions.
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This option is only useful if you have a processor that supports
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SPE (e500, otherwise known as 85xx series), but does not have any
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effect on a non-spe cpu (it does, however add code to the kernel).
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If in doubt, say Y here.
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config PPC_STD_MMU
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def_bool y
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depends on PPC_BOOK3S
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config PPC_STD_MMU_32
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def_bool y
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depends on PPC_STD_MMU && PPC32
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config ARCH_ENABLE_SPLIT_PMD_PTLOCK
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def_bool y
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depends on PPC_BOOK3S_64
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config PPC_RADIX_MMU
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bool "Radix MMU Support"
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depends on PPC_BOOK3S_64 && HUGETLB_PAGE
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select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
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default y
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help
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Enable support for the Power ISA 3.0 Radix style MMU. Currently this
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is only implemented by IBM Power9 CPUs, if you don't have one of them
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you can probably disable this.
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config PPC_RADIX_MMU_DEFAULT
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bool "Default to using the Radix MMU when possible"
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depends on PPC_RADIX_MMU
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default y
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help
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When the hardware supports the Radix MMU, default to using it unless
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"disable_radix[=yes]" is specified on the kernel command line.
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If this option is disabled, the Hash MMU will be used by default,
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unless "disable_radix=no" is specified on the kernel command line.
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If you're unsure, say Y.
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config ARCH_ENABLE_HUGEPAGE_MIGRATION
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def_bool y
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depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
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config PPC_MMU_NOHASH
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def_bool y
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depends on !PPC_STD_MMU
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config PPC_BOOK3E_MMU
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def_bool y
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depends on FSL_BOOKE || PPC_BOOK3E
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config PPC_MM_SLICES
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bool
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default y if PPC_BOOK3S_64
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default y if PPC_8xx && HUGETLB_PAGE
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default n
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config PPC_HAVE_PMU_SUPPORT
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bool
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config PPC_PERF_CTRS
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def_bool y
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depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
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help
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This enables the powerpc-specific perf_event back-end.
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config FORCE_SMP
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# Allow platforms to force SMP=y by selecting this
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bool
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default n
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select SMP
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config SMP
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depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
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select GENERIC_IRQ_MIGRATION
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bool "Symmetric multi-processing support" if !FORCE_SMP
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---help---
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more
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than one CPU, say Y. Note that the kernel does not currently
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support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
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since they have inadequate hardware support for multiprocessor
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operation.
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If you say N here, the kernel will run on single and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on single-processor machines.
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On a single-processor machine, the kernel will run faster if you say
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N here.
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If you don't know what to do here, say N.
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config NR_CPUS
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int "Maximum number of CPUs (2-8192)"
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range 2 8192
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depends on SMP
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default "32" if PPC64
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default "4"
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config NOT_COHERENT_CACHE
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bool
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depends on 4xx || PPC_8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
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default n if PPC_47x
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default y
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config CHECK_CACHE_COHERENCY
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bool
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config PPC_DOORBELL
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bool
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default n
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endmenu
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config VDSO32
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def_bool y
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depends on PPC32 || CPU_BIG_ENDIAN
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help
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This symbol controls whether we build the 32-bit VDSO. We obviously
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want to do that if we're building a 32-bit kernel. If we're building
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a 64-bit kernel then we only want a 32-bit VDSO if we're building for
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big endian. That is because the only little endian configuration we
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support is ppc64le which is 64-bit only.
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choice
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prompt "Endianness selection"
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default CPU_BIG_ENDIAN
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help
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This option selects whether a big endian or little endian kernel will
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be built.
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config CPU_BIG_ENDIAN
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bool "Build big endian kernel"
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help
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Build a big endian kernel.
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If unsure, select this option.
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config CPU_LITTLE_ENDIAN
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bool "Build little endian kernel"
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depends on PPC_BOOK3S_64
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select PPC64_BOOT_WRAPPER
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help
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Build a little endian kernel.
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Note that if cross compiling a little endian kernel,
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CROSS_COMPILE must point to a toolchain capable of targeting
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little endian powerpc.
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endchoice
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config PPC64_BOOT_WRAPPER
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def_bool n
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depends on CPU_LITTLE_ENDIAN
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