mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2025-01-12 00:38:55 +00:00
[POWERPC] Split out CPU specific options into a new Kconfig file
A lot of the options in arch/powerpc/Kconfig deal with the CPU menu, and my next patches add more to them. Moving them to a new arch/powerpc/platforms/Kconfig.cputype file makes it easier to follow. There are no functional changes in here. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Arnd Bergmann
Paul Mackerras
parent
effe24bdd4
commit
a0ae9c7c05
@ -4,12 +4,7 @@
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mainmenu "Linux/PowerPC Kernel Configuration"
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config PPC64
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bool "64-bit kernel"
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default n
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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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source "arch/powerpc/platforms/Kconfig.cputype"
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config PPC_PM_NEEDS_RTC_LIB
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bool
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@ -132,123 +127,6 @@ config PPC64_SWSUSP
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depends on PPC64 && (BROKEN || (PPC_PMAC64 && EXPERIMENTAL))
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default y
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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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default 6xx
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config CLASSIC32
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bool "52xx/6xx/7xx/74xx"
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select PPC_FPU
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select 6xx
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help
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There are four families of PowerPC chips supported. The more common
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types (601, 603, 604, 740, 750, 7400), the Motorola embedded
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versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
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embedded versions (403 and 405) and the high end 64 bit Power
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processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
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This option is the catch-all for 6xx types, including some of the
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embedded versions. Unless there is see an option for the specific
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chip family you are using, you want this option.
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You do not want this if you are building a kernel for a 64 bit
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IBM RS/6000 or an Apple G5, choose 6xx.
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If unsure, select this option
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Note that the kernel runs in 32-bit mode even on 64-bit chips.
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config PPC_82xx
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bool "Freescale 82xx"
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select 6xx
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select PPC_FPU
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config PPC_83xx
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bool "Freescale 83xx"
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select 6xx
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select FSL_SOC
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select 83xx
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select PPC_FPU
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select WANT_DEVICE_TREE
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config PPC_85xx
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bool "Freescale 85xx"
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select E500
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select FSL_SOC
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select 85xx
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select WANT_DEVICE_TREE
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config PPC_86xx
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bool "Freescale 86xx"
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select 6xx
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select FSL_SOC
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select FSL_PCIE
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select PPC_FPU
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select ALTIVEC
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help
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The Freescale E600 SoCs have 74xx cores.
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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 8xx
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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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config 44x
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bool "AMCC 44x"
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select PPC_DCR_NATIVE
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select WANT_DEVICE_TREE
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config E200
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bool "Freescale e200"
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endchoice
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config POWER4_ONLY
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bool "Optimize for POWER4"
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depends on PPC64
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default n
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---help---
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Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
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The resulting binary will not work on POWER3 or RS64 processors
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when compiled with binutils 2.15 or later.
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config POWER3
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bool
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depends on PPC64
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default y if !POWER4_ONLY
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config POWER4
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depends on PPC64
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def_bool y
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config 6xx
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bool
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# this is temp to handle compat with arch=ppc
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config 8xx
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bool
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# this is temp to handle compat with arch=ppc
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config 83xx
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bool
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# this is temp to handle compat with arch=ppc
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config 85xx
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bool
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config E500
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bool
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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 PPC_DCR_NATIVE
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bool
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default n
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@ -267,134 +145,6 @@ config PPC_OF_PLATFORM_PCI
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depends on PPC64 # not supported on 32 bits yet
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default n
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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
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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
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default y
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config PTE_64BIT
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bool
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depends on 44x || E500
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default y if 44x
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default y if E500 && PHYS_64BIT
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config PHYS_64BIT
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bool 'Large physical address support' if E500
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depends on 44x || E500
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select RESOURCES_64BIT
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default y if 44x
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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 features is not be available on all e500 cores.
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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 CLASSIC32 || POWER4
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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 SPE
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bool "SPE Support"
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depends on E200 || E500
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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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bool
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depends on 6xx || POWER3 || POWER4 || PPC64
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default y
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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 PPC_MM_SLICES
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bool
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default y if HUGETLB_PAGE
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default n
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config VIRT_CPU_ACCOUNTING
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bool "Deterministic task and CPU time accounting"
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depends on PPC64
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default y
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help
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Select this option to enable more accurate task and CPU time
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accounting. This is done by reading a CPU counter on each
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kernel entry and exit and on transitions within the kernel
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between system, softirq and hardirq state, so there is a
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small performance impact. This also enables accounting of
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stolen time on logically-partitioned systems running on
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IBM POWER5-based machines.
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If in doubt, say Y here.
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config SMP
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depends on PPC_STD_MMU
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bool "Symmetric multi-processing support"
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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 (2-128)"
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range 2 128
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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 || 8xx || E200
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default y
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config CONFIG_CHECK_CACHE_COHERENCY
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bool
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endmenu
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source "init/Kconfig"
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source "arch/powerpc/platforms/Kconfig"
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252
arch/powerpc/platforms/Kconfig.cputype
Normal file
252
arch/powerpc/platforms/Kconfig.cputype
Normal file
@ -0,0 +1,252 @@
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config PPC64
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bool "64-bit kernel"
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default n
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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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default 6xx
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config CLASSIC32
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bool "52xx/6xx/7xx/74xx"
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select PPC_FPU
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select 6xx
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help
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There are four families of PowerPC chips supported. The more common
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types (601, 603, 604, 740, 750, 7400), the Motorola embedded
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versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
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embedded versions (403 and 405) and the high end 64 bit Power
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processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
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This option is the catch-all for 6xx types, including some of the
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embedded versions. Unless there is see an option for the specific
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chip family you are using, you want this option.
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You do not want this if you are building a kernel for a 64 bit
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IBM RS/6000 or an Apple G5, choose 6xx.
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If unsure, select this option
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Note that the kernel runs in 32-bit mode even on 64-bit chips.
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config PPC_82xx
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bool "Freescale 82xx"
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select 6xx
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select PPC_FPU
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config PPC_83xx
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bool "Freescale 83xx"
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select 6xx
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select FSL_SOC
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select 83xx
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select PPC_FPU
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select WANT_DEVICE_TREE
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config PPC_85xx
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bool "Freescale 85xx"
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select E500
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select FSL_SOC
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select 85xx
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select WANT_DEVICE_TREE
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config PPC_86xx
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bool "Freescale 86xx"
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select 6xx
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select FSL_SOC
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select FSL_PCIE
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select PPC_FPU
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select ALTIVEC
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help
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The Freescale E600 SoCs have 74xx cores.
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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 8xx
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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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config 44x
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bool "AMCC 44x"
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select PPC_DCR_NATIVE
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select WANT_DEVICE_TREE
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config E200
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bool "Freescale e200"
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endchoice
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config POWER4_ONLY
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bool "Optimize for POWER4"
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depends on PPC64
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default n
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---help---
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Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
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The resulting binary will not work on POWER3 or RS64 processors
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when compiled with binutils 2.15 or later.
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config POWER3
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bool
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depends on PPC64
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default y if !POWER4_ONLY
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config POWER4
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depends on PPC64
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def_bool y
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config 6xx
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bool
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# this is temp to handle compat with arch=ppc
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config 8xx
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bool
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# this is temp to handle compat with arch=ppc
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config 83xx
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bool
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# this is temp to handle compat with arch=ppc
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config 85xx
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bool
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config E500
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bool
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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 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
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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
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default y
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config PTE_64BIT
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bool
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depends on 44x || E500
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default y if 44x
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default y if E500 && PHYS_64BIT
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config PHYS_64BIT
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bool 'Large physical address support' if E500
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depends on 44x || E500
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select RESOURCES_64BIT
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default y if 44x
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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 features is not be available on all e500 cores.
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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 CLASSIC32 || POWER4
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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
|
||||
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 SPE
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bool "SPE Support"
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depends on E200 || E500
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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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|
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If in doubt, say Y here.
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config PPC_STD_MMU
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bool
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depends on 6xx || POWER3 || POWER4 || PPC64
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default y
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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 PPC_MM_SLICES
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bool
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default y if HUGETLB_PAGE
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default n
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config VIRT_CPU_ACCOUNTING
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bool "Deterministic task and CPU time accounting"
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depends on PPC64
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default y
|
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help
|
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Select this option to enable more accurate task and CPU time
|
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accounting. This is done by reading a CPU counter on each
|
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kernel entry and exit and on transitions within the kernel
|
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between system, softirq and hardirq state, so there is a
|
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small performance impact. This also enables accounting of
|
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stolen time on logically-partitioned systems running on
|
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IBM POWER5-based machines.
|
||||
|
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If in doubt, say Y here.
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|
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config SMP
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depends on PPC_STD_MMU
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bool "Symmetric multi-processing support"
|
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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
|
||||
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
|
||||
machines, but will use only one CPU of a multiprocessor machine. If
|
||||
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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|
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config NR_CPUS
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int "Maximum number of CPUs (2-128)"
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range 2 128
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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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|
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config NOT_COHERENT_CACHE
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bool
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depends on 4xx || 8xx || E200
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default y
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|
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config CONFIG_CHECK_CACHE_COHERENCY
|
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bool
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endmenu
|
||||
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