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sh: Consolidate CPU features in Kconfig.cpu.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
parent
114f132975
commit
4690bdc7c6
102
arch/sh/Kconfig.cpu
Normal file
102
arch/sh/Kconfig.cpu
Normal file
@ -0,0 +1,102 @@
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menu "Processor features"
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choice
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prompt "Endianess selection"
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default CPU_LITTLE_ENDIAN
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help
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Some SuperH machines can be configured for either little or big
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endian byte order. These modes require different kernels.
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config CPU_LITTLE_ENDIAN
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bool "Little Endian"
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config CPU_BIG_ENDIAN
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bool "Big Endian"
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endchoice
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config SH_FPU
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bool "FPU support"
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depends on CPU_HAS_FPU
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default y
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help
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Selecting this option will enable support for SH processors that
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have FPU units (ie, SH77xx).
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This option must be set in order to enable the FPU.
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config SH_FPU_EMU
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bool "FPU emulation support"
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depends on !SH_FPU && EXPERIMENTAL
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default n
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help
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Selecting this option will enable support for software FPU emulation.
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Most SH-3 users will want to say Y here, whereas most SH-4 users will
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want to say N.
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config SH_DSP
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bool "DSP support"
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depends on CPU_HAS_DSP
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default y
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help
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Selecting this option will enable support for SH processors that
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have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
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This option must be set in order to enable the DSP.
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config SH_ADC
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bool "ADC support"
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depends on CPU_SH3
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default y
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help
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Selecting this option will allow the Linux kernel to use SH3 on-chip
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ADC module.
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If unsure, say N.
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config SH_STORE_QUEUES
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bool "Support for Store Queues"
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depends on CPU_SH4
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help
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Selecting this option will enable an in-kernel API for manipulating
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the store queues integrated in the SH-4 processors.
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config SPECULATIVE_EXECUTION
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bool "Speculative subroutine return"
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depends on CPU_SUBTYPE_SH7780 && EXPERIMENTAL
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help
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This enables support for a speculative instruction fetch for
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subroutine return. There are various pitfalls associated with
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this, as outlined in the SH7780 hardware manual.
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If unsure, say N.
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config CPU_HAS_INTEVT
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bool
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config CPU_HAS_MASKREG_IRQ
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bool
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config CPU_HAS_IPR_IRQ
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bool
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config CPU_HAS_SR_RB
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bool
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help
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This will enable the use of SR.RB register bank usage. Processors
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that are lacking this bit must have another method in place for
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accomplishing what is taken care of by the banked registers.
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See <file:Documentation/sh/register-banks.txt> for further
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information on SR.RB and register banking in the kernel in general.
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config CPU_HAS_PTEA
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bool
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config CPU_HAS_DSP
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bool
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config CPU_HAS_FPU
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bool
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endmenu
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@ -291,109 +291,7 @@ config CPU_SUBTYPE_SH7722
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endchoice
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source "arch/sh/mm/Kconfig"
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menu "Processor features"
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choice
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prompt "Endianess selection"
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default CPU_LITTLE_ENDIAN
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help
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Some SuperH machines can be configured for either little or big
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endian byte order. These modes require different kernels.
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config CPU_LITTLE_ENDIAN
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bool "Little Endian"
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config CPU_BIG_ENDIAN
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bool "Big Endian"
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endchoice
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config SH_FPU
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bool "FPU support"
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depends on CPU_HAS_FPU
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default y
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help
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Selecting this option will enable support for SH processors that
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have FPU units (ie, SH77xx).
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This option must be set in order to enable the FPU.
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config SH_FPU_EMU
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bool "FPU emulation support"
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depends on !SH_FPU && EXPERIMENTAL
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default n
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help
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Selecting this option will enable support for software FPU emulation.
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Most SH-3 users will want to say Y here, whereas most SH-4 users will
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want to say N.
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config SH_DSP
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bool "DSP support"
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depends on CPU_HAS_DSP
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default y
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help
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Selecting this option will enable support for SH processors that
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have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
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This option must be set in order to enable the DSP.
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config SH_ADC
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bool "ADC support"
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depends on CPU_SH3
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default y
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help
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Selecting this option will allow the Linux kernel to use SH3 on-chip
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ADC module.
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If unsure, say N.
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config SH_STORE_QUEUES
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bool "Support for Store Queues"
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depends on CPU_SH4
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help
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Selecting this option will enable an in-kernel API for manipulating
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the store queues integrated in the SH-4 processors.
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config SPECULATIVE_EXECUTION
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bool "Speculative subroutine return"
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depends on CPU_SUBTYPE_SH7780 && EXPERIMENTAL
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help
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This enables support for a speculative instruction fetch for
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subroutine return. There are various pitfalls associated with
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this, as outlined in the SH7780 hardware manual.
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If unsure, say N.
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config CPU_HAS_INTEVT
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bool
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config CPU_HAS_MASKREG_IRQ
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bool
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config CPU_HAS_IPR_IRQ
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bool
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config CPU_HAS_SR_RB
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bool
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help
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This will enable the use of SR.RB register bank usage. Processors
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that are lacking this bit must have another method in place for
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accomplishing what is taken care of by the banked registers.
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See <file:Documentation/sh/register-banks.txt> for further
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information on SR.RB and register banking in the kernel in general.
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config CPU_HAS_PTEA
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bool
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config CPU_HAS_DSP
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bool
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config CPU_HAS_FPU
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bool
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endmenu
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source "arch/sh/Kconfig.cpu"
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menu "Board support"
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@ -99,21 +99,7 @@ config CPU_SUBTYPE_SH5_103
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endchoice
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choice
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prompt "Endianness"
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default LITTLE_ENDIAN
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config LITTLE_ENDIAN
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bool "Little-Endian"
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config BIG_ENDIAN
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bool "Big-Endian"
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endchoice
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config SH_FPU
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bool "FPU support"
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default y
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source "arch/sh/Kconfig.cpu"
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config SH64_FPU_DENORM_FLUSH
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depends on SH_FPU
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