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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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8a655053ca
The sh cpufreq driver is no longer limited to just the SH-3 and SH-4, update the documentation to reflect this fact accordingly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
745 lines
17 KiB
Text
745 lines
17 KiB
Text
#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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mainmenu "Linux/SuperH Kernel Configuration"
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config SUPERH
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def_bool y
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select EMBEDDED
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select HAVE_CLK
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select HAVE_IDE
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select HAVE_OPROFILE
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select HAVE_GENERIC_DMA_COHERENT
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select HAVE_IOREMAP_PROT if MMU
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select HAVE_ARCH_TRACEHOOK
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help
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The SuperH is a RISC processor targeted for use in embedded systems
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and consumer electronics; it was also used in the Sega Dreamcast
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gaming console. The SuperH port has a home page at
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<http://www.linux-sh.org/>.
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config SUPERH32
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def_bool !SUPERH64
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select HAVE_KPROBES
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select HAVE_KRETPROBES
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select HAVE_FUNCTION_TRACER
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_DYNAMIC_FTRACE
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select HAVE_ARCH_KGDB
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config SUPERH64
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def_bool y if CPU_SH5
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config ARCH_DEFCONFIG
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string
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default "arch/sh/configs/shx3_defconfig" if SUPERH32
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default "arch/sh/configs/cayman_defconfig" if SUPERH64
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config RWSEM_GENERIC_SPINLOCK
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def_bool y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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config GENERIC_BUG
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def_bool y
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depends on BUG && SUPERH32
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config GENERIC_FIND_NEXT_BIT
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def_bool y
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config GENERIC_HWEIGHT
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def_bool y
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config GENERIC_HARDIRQS
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def_bool y
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config GENERIC_HARDIRQS_NO__DO_IRQ
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def_bool y
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config GENERIC_IRQ_PROBE
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def_bool y
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config GENERIC_GPIO
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def_bool n
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config GENERIC_CALIBRATE_DELAY
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bool
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config GENERIC_IOMAP
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bool
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config GENERIC_TIME
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def_bool n
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config GENERIC_CLOCKEVENTS
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def_bool n
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config GENERIC_CLOCKEVENTS_BROADCAST
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bool
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config GENERIC_LOCKBREAK
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def_bool y
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depends on SMP && PREEMPT
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config SYS_SUPPORTS_PM
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bool
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depends on !SMP
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config ARCH_SUSPEND_POSSIBLE
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def_bool n
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config ARCH_HIBERNATION_POSSIBLE
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def_bool n
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config SYS_SUPPORTS_APM_EMULATION
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bool
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select ARCH_SUSPEND_POSSIBLE
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config SYS_SUPPORTS_SMP
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bool
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config SYS_SUPPORTS_NUMA
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bool
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config SYS_SUPPORTS_PCI
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bool
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config STACKTRACE_SUPPORT
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def_bool y
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config LOCKDEP_SUPPORT
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def_bool y
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config HAVE_LATENCYTOP_SUPPORT
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def_bool y
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depends on !SMP
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config ARCH_HAS_ILOG2_U32
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def_bool n
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config ARCH_HAS_ILOG2_U64
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def_bool n
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config ARCH_NO_VIRT_TO_BUS
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def_bool y
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config IO_TRAPPED
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bool
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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menu "System type"
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#
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# Processor families
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#
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config CPU_SH2
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bool
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config CPU_SH2A
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bool
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select CPU_SH2
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config CPU_SH3
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bool
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select CPU_HAS_INTEVT
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select CPU_HAS_SR_RB
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config CPU_SH4
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bool
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select CPU_HAS_INTEVT
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select CPU_HAS_SR_RB
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select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
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select CPU_HAS_FPU if !CPU_SH4AL_DSP
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config CPU_SH4A
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bool
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select CPU_SH4
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config CPU_SH4AL_DSP
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bool
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select CPU_SH4A
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select CPU_HAS_DSP
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config CPU_SH5
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bool
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select CPU_HAS_FPU
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config CPU_SHX2
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bool
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config CPU_SHX3
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bool
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choice
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prompt "Processor sub-type selection"
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#
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# Processor subtypes
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#
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# SH-2 Processor Support
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config CPU_SUBTYPE_SH7619
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bool "Support SH7619 processor"
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select CPU_SH2
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# SH-2A Processor Support
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config CPU_SUBTYPE_SH7201
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bool "Support SH7201 processor"
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select CPU_SH2A
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select CPU_HAS_FPU
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config CPU_SUBTYPE_SH7203
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bool "Support SH7203 processor"
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select CPU_SH2A
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select CPU_HAS_FPU
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config CPU_SUBTYPE_SH7206
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bool "Support SH7206 processor"
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select CPU_SH2A
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config CPU_SUBTYPE_SH7263
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bool "Support SH7263 processor"
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select CPU_SH2A
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select CPU_HAS_FPU
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config CPU_SUBTYPE_MXG
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bool "Support MX-G processor"
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select CPU_SH2A
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help
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Select MX-G if running on an R8A03022BG part.
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# SH-3 Processor Support
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config CPU_SUBTYPE_SH7705
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bool "Support SH7705 processor"
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select CPU_SH3
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config CPU_SUBTYPE_SH7706
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bool "Support SH7706 processor"
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select CPU_SH3
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help
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Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
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config CPU_SUBTYPE_SH7707
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bool "Support SH7707 processor"
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select CPU_SH3
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help
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Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
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config CPU_SUBTYPE_SH7708
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bool "Support SH7708 processor"
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select CPU_SH3
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help
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Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
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if you have a 100 Mhz SH-3 HD6417708R CPU.
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config CPU_SUBTYPE_SH7709
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bool "Support SH7709 processor"
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select CPU_SH3
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help
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Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
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config CPU_SUBTYPE_SH7710
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bool "Support SH7710 processor"
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select CPU_SH3
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select CPU_HAS_DSP
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help
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Select SH7710 if you have a SH3-DSP SH7710 CPU.
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config CPU_SUBTYPE_SH7712
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bool "Support SH7712 processor"
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select CPU_SH3
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select CPU_HAS_DSP
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help
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Select SH7712 if you have a SH3-DSP SH7712 CPU.
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config CPU_SUBTYPE_SH7720
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bool "Support SH7720 processor"
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select CPU_SH3
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select CPU_HAS_DSP
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help
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Select SH7720 if you have a SH3-DSP SH7720 CPU.
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config CPU_SUBTYPE_SH7721
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bool "Support SH7721 processor"
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select CPU_SH3
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select CPU_HAS_DSP
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help
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Select SH7721 if you have a SH3-DSP SH7721 CPU.
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# SH-4 Processor Support
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config CPU_SUBTYPE_SH7750
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bool "Support SH7750 processor"
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select CPU_SH4
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help
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Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
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config CPU_SUBTYPE_SH7091
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bool "Support SH7091 processor"
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select CPU_SH4
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help
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Select SH7091 if you have an SH-4 based Sega device (such as
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the Dreamcast, Naomi, and Naomi 2).
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config CPU_SUBTYPE_SH7750R
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bool "Support SH7750R processor"
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select CPU_SH4
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config CPU_SUBTYPE_SH7750S
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bool "Support SH7750S processor"
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select CPU_SH4
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config CPU_SUBTYPE_SH7751
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bool "Support SH7751 processor"
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select CPU_SH4
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help
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Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
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or if you have a HD6417751R CPU.
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config CPU_SUBTYPE_SH7751R
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bool "Support SH7751R processor"
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select CPU_SH4
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config CPU_SUBTYPE_SH7760
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bool "Support SH7760 processor"
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select CPU_SH4
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config CPU_SUBTYPE_SH4_202
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bool "Support SH4-202 processor"
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select CPU_SH4
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# SH-4A Processor Support
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config CPU_SUBTYPE_SH7723
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bool "Support SH7723 processor"
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select CPU_SH4A
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select CPU_SHX2
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select ARCH_SPARSEMEM_ENABLE
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help
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Select SH7723 if you have an SH-MobileR2 CPU.
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config CPU_SUBTYPE_SH7763
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bool "Support SH7763 processor"
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select CPU_SH4A
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help
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Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
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config CPU_SUBTYPE_SH7770
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bool "Support SH7770 processor"
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select CPU_SH4A
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config CPU_SUBTYPE_SH7780
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bool "Support SH7780 processor"
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select CPU_SH4A
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config CPU_SUBTYPE_SH7785
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bool "Support SH7785 processor"
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select CPU_SH4A
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select CPU_SHX2
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select ARCH_SPARSEMEM_ENABLE
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select SYS_SUPPORTS_NUMA
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config CPU_SUBTYPE_SHX3
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bool "Support SH-X3 processor"
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select CPU_SH4A
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select CPU_SHX3
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select ARCH_SPARSEMEM_ENABLE
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select SYS_SUPPORTS_NUMA
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select SYS_SUPPORTS_SMP
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select GENERIC_CLOCKEVENTS_BROADCAST if SMP
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# SH4AL-DSP Processor Support
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config CPU_SUBTYPE_SH7343
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bool "Support SH7343 processor"
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select CPU_SH4AL_DSP
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config CPU_SUBTYPE_SH7722
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bool "Support SH7722 processor"
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select CPU_SH4AL_DSP
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select CPU_SHX2
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select ARCH_SPARSEMEM_ENABLE
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select SYS_SUPPORTS_NUMA
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config CPU_SUBTYPE_SH7366
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bool "Support SH7366 processor"
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select CPU_SH4AL_DSP
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select CPU_SHX2
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select ARCH_SPARSEMEM_ENABLE
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select SYS_SUPPORTS_NUMA
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# SH-5 Processor Support
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config CPU_SUBTYPE_SH5_101
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bool "Support SH5-101 processor"
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select CPU_SH5
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config CPU_SUBTYPE_SH5_103
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bool "Support SH5-103 processor"
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select CPU_SH5
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endchoice
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source "arch/sh/mm/Kconfig"
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source "arch/sh/Kconfig.cpu"
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source "arch/sh/boards/Kconfig"
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menu "Timer and clock configuration"
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config SH_TMU
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def_bool y
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prompt "TMU timer support"
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depends on CPU_SH3 || CPU_SH4
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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help
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This enables the use of the TMU as the system timer.
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config SH_CMT
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def_bool y
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prompt "CMT timer support"
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depends on CPU_SH2 && !CPU_SUBTYPE_MXG
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help
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This enables the use of the CMT as the system timer.
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config SH_MTU2
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def_bool n
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prompt "MTU2 timer support"
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depends on CPU_SH2A
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help
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This enables the use of the MTU2 as the system timer.
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config SH_TIMER_IRQ
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int
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default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
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CPU_SUBTYPE_SH7763
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default "86" if CPU_SUBTYPE_SH7619
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default "140" if CPU_SUBTYPE_SH7206
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default "142" if CPU_SUBTYPE_SH7203
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default "238" if CPU_SUBTYPE_MXG
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default "16"
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config SH_PCLK_FREQ
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int "Peripheral clock frequency (in Hz)"
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default "27000000" if CPU_SUBTYPE_SH7343
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default "31250000" if CPU_SUBTYPE_SH7619
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default "32000000" if CPU_SUBTYPE_SH7722
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default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
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CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
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CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
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CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
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default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
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default "66000000" if CPU_SUBTYPE_SH4_202
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default "50000000"
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help
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This option is used to specify the peripheral clock frequency.
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This is necessary for determining the reference clock value on
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platforms lacking an RTC.
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config SH_CLK_MD
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int "CPU Mode Pin Setting"
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depends on CPU_SH2
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default 6 if CPU_SUBTYPE_SH7206
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default 5 if CPU_SUBTYPE_SH7619
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default 0
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help
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MD2 - MD0 pin setting.
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source "kernel/time/Kconfig"
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endmenu
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menu "CPU Frequency scaling"
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source "drivers/cpufreq/Kconfig"
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config SH_CPU_FREQ
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tristate "SuperH CPU Frequency driver"
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depends on CPU_FREQ
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select CPU_FREQ_TABLE
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help
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This adds the cpufreq driver for SuperH. Any CPU that supports
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clock rate rounding through the clock framework can use this
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driver. While it will make the kernel slightly larger, this is
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harmless for CPUs that don't support rate rounding. The driver
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will also generate a notice in the boot log before disabling
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itself if the CPU in question is not capable of rate rounding.
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For details, take a look at <file:Documentation/cpu-freq>.
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If unsure, say N.
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endmenu
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source "arch/sh/drivers/Kconfig"
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endmenu
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config ISA_DMA_API
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bool
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menu "Kernel features"
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source kernel/Kconfig.hz
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config KEXEC
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bool "kexec system call (EXPERIMENTAL)"
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depends on SUPERH32 && EXPERIMENTAL
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help
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kexec is a system call that implements the ability to shutdown your
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current kernel, and to start another kernel. It is like a reboot
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but it is independent of the system firmware. And like a reboot
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you can start any kernel with it, not just Linux.
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The name comes from the similarity to the exec system call.
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It is an ongoing process to be certain the hardware in a machine
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is properly shutdown, so do not be surprised if this code does not
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initially work for you. It may help to enable device hotplugging
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support. As of this writing the exact hardware interface is
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strongly in flux, so no good recommendation can be made.
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config CRASH_DUMP
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bool "kernel crash dumps (EXPERIMENTAL)"
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depends on SUPERH32 && EXPERIMENTAL
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help
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Generate crash dump after being started by kexec.
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This should be normally only set in special crash dump kernels
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which are loaded in the main kernel with kexec-tools into
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a specially reserved region and then later executed after
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a crash by kdump/kexec. The crash dump kernel must be compiled
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to a memory address not used by the main kernel using
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MEMORY_START.
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For more details see Documentation/kdump/kdump.txt
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config SECCOMP
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bool "Enable seccomp to safely compute untrusted bytecode"
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depends on PROC_FS
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help
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This kernel feature is useful for number crunching applications
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that may need to compute untrusted bytecode during their
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execution. By using pipes or other transports made available to
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the process as file descriptors supporting the read/write
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syscalls, it's possible to isolate those applications in
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their own address space using seccomp. Once seccomp is
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enabled via prctl, it cannot be disabled and the task is only
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allowed to execute a few safe syscalls defined by each seccomp
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mode.
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If unsure, say N.
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config SMP
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bool "Symmetric multi-processing support"
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depends on SYS_SUPPORTS_SMP
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select USE_GENERIC_SMP_HELPERS
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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, like most personal computers, say N. If
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you have a system with more than one CPU, say Y.
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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 many, but not all,
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singleprocessor machines. On a singleprocessor machine, the kernel
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will run faster if you say N here.
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People using multiprocessor machines who say Y here should also say
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Y to "Enhanced Real Time Clock Support", below.
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See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
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available at <http://www.tldp.org/docs.html#howto>.
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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 (2-32)"
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range 2 32
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depends on SMP
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default "4" if CPU_SHX3
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default "2"
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help
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This allows you to specify the maximum number of CPUs which this
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kernel will support. The maximum supported value is 32 and the
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|
minimum value which makes sense is 2.
|
|
|
|
This is purely to save memory - each supported CPU adds
|
|
approximately eight kilobytes to the kernel image.
|
|
|
|
source "kernel/Kconfig.preempt"
|
|
|
|
config GUSA
|
|
def_bool y
|
|
depends on !SMP && SUPERH32
|
|
help
|
|
This enables support for gUSA (general UserSpace Atomicity).
|
|
This is the default implementation for both UP and non-ll/sc
|
|
CPUs, and is used by the libc, amongst others.
|
|
|
|
For additional information, design information can be found
|
|
in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
|
|
|
|
This should only be disabled for special cases where alternate
|
|
atomicity implementations exist.
|
|
|
|
config GUSA_RB
|
|
bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
|
|
depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
|
|
help
|
|
Enabling this option will allow the kernel to implement some
|
|
atomic operations using a software implemention of load-locked/
|
|
store-conditional (LLSC). On machines which do not have hardware
|
|
LLSC, this should be more efficient than the other alternative of
|
|
disabling insterrupts around the atomic sequence.
|
|
|
|
endmenu
|
|
|
|
menu "Boot options"
|
|
|
|
config ZERO_PAGE_OFFSET
|
|
hex "Zero page offset"
|
|
default "0x00004000" if SH_SH03
|
|
default "0x00010000" if PAGE_SIZE_64KB
|
|
default "0x00002000" if PAGE_SIZE_8KB
|
|
default "0x00001000"
|
|
help
|
|
This sets the default offset of zero page.
|
|
|
|
config BOOT_LINK_OFFSET
|
|
hex "Link address offset for booting"
|
|
default "0x00800000"
|
|
help
|
|
This option allows you to set the link address offset of the zImage.
|
|
This can be useful if you are on a board which has a small amount of
|
|
memory.
|
|
|
|
config UBC_WAKEUP
|
|
bool "Wakeup UBC on startup"
|
|
depends on CPU_SH4 && !CPU_SH4A
|
|
help
|
|
Selecting this option will wakeup the User Break Controller (UBC) on
|
|
startup. Although the UBC is left in an awake state when the processor
|
|
comes up, some boot loaders misbehave by putting the UBC to sleep in a
|
|
power saving state, which causes issues with things like ptrace().
|
|
|
|
If unsure, say N.
|
|
|
|
config CMDLINE_BOOL
|
|
bool "Default bootloader kernel arguments"
|
|
|
|
config CMDLINE
|
|
string "Initial kernel command string"
|
|
depends on CMDLINE_BOOL
|
|
default "console=ttySC1,115200"
|
|
|
|
endmenu
|
|
|
|
menu "Bus options"
|
|
|
|
# Even on SuperH devices which don't have an ISA bus,
|
|
# this variable helps the PCMCIA modules handle
|
|
# IRQ requesting properly -- Greg Banks.
|
|
#
|
|
# Though we're generally not interested in it when
|
|
# we're not using PCMCIA, so we make it dependent on
|
|
# PCMCIA outright. -- PFM.
|
|
config ISA
|
|
def_bool y
|
|
depends on PCMCIA && HD6446X_SERIES
|
|
help
|
|
Find out whether you have ISA slots on your motherboard. ISA is the
|
|
name of a bus system, i.e. the way the CPU talks to the other stuff
|
|
inside your box. Other bus systems are PCI, EISA, MicroChannel
|
|
(MCA) or VESA. ISA is an older system, now being displaced by PCI;
|
|
newer boards don't support it. If you have ISA, say Y, otherwise N.
|
|
|
|
config EISA
|
|
bool
|
|
---help---
|
|
The Extended Industry Standard Architecture (EISA) bus was
|
|
developed as an open alternative to the IBM MicroChannel bus.
|
|
|
|
The EISA bus provided some of the features of the IBM MicroChannel
|
|
bus while maintaining backward compatibility with cards made for
|
|
the older ISA bus. The EISA bus saw limited use between 1988 and
|
|
1995 when it was made obsolete by the PCI bus.
|
|
|
|
Say Y here if you are building a kernel for an EISA-based machine.
|
|
|
|
Otherwise, say N.
|
|
|
|
config MCA
|
|
bool
|
|
help
|
|
MicroChannel Architecture is found in some IBM PS/2 machines and
|
|
laptops. It is a bus system similar to PCI or ISA. See
|
|
<file:Documentation/mca.txt> (and especially the web page given
|
|
there) before attempting to build an MCA bus kernel.
|
|
|
|
config SBUS
|
|
bool
|
|
|
|
config SUPERHYWAY
|
|
tristate "SuperHyway Bus support"
|
|
depends on CPU_SUBTYPE_SH4_202
|
|
|
|
config MAPLE
|
|
bool "Maple Bus support"
|
|
depends on SH_DREAMCAST
|
|
help
|
|
The Maple Bus is SEGA's serial communication bus for peripherals
|
|
on the Dreamcast. Without this bus support you won't be able to
|
|
get your Dreamcast keyboard etc to work, so most users
|
|
probably want to say 'Y' here, unless you are only using the
|
|
Dreamcast with a serial line terminal or a remote network
|
|
connection.
|
|
|
|
source "arch/sh/drivers/pci/Kconfig"
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
source "drivers/pci/hotplug/Kconfig"
|
|
|
|
endmenu
|
|
|
|
menu "Executable file formats"
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
endmenu
|
|
|
|
menu "Power management options (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL
|
|
|
|
source "kernel/power/Kconfig"
|
|
|
|
source "drivers/cpuidle/Kconfig"
|
|
|
|
endmenu
|
|
|
|
source "net/Kconfig"
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "arch/sh/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|