Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
465 lines (374 sloc) 11.3 KB
# 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
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
You can’t perform that action at this time.