Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#
# Processor families
#
config CPU_SH2
        bool

config CPU_SH2A
        bool
        select CPU_SH2

config CPU_SH3
        bool
        select CPU_HAS_INTEVT
        select CPU_HAS_SR_RB

config CPU_SH4
        bool
        select CPU_HAS_INTEVT
        select CPU_HAS_SR_RB
        select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
        select CPU_HAS_FPU if !CPU_SH4AL_DSP

config CPU_SH4A
        bool
        select CPU_SH4

config CPU_SH4AL_DSP
        bool
        select CPU_SH4A
        select CPU_HAS_DSP

config CPU_SHX2
        bool

config CPU_SHX3
        bool

choice
        prompt "Processor sub-type selection"

#
# Processor subtypes
#

# SH-2 Processor Support

config CPU_SUBTYPE_SH7619
        bool "Support SH7619 processor"
        select CPU_SH2

# SH-2A Processor Support

config CPU_SUBTYPE_SH7206
        bool "Support SH7206 processor"
        select CPU_SH2A

# SH-3 Processor Support

config CPU_SUBTYPE_SH7705
        bool "Support SH7705 processor"
        select CPU_SH3

config CPU_SUBTYPE_SH7706
        bool "Support SH7706 processor"
        select CPU_SH3
        help
          Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.

config CPU_SUBTYPE_SH7707
        bool "Support SH7707 processor"
        select CPU_SH3
        help
          Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.

config CPU_SUBTYPE_SH7708
        bool "Support SH7708 processor"
        select CPU_SH3
        help
          Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
          if you have a 100 Mhz SH-3 HD6417708R CPU.

config CPU_SUBTYPE_SH7709
        bool "Support SH7709 processor"
        select CPU_SH3
        help
          Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.

config CPU_SUBTYPE_SH7710
        bool "Support SH7710 processor"
        select CPU_SH3
        select CPU_HAS_DSP
        help
          Select SH7710 if you have a SH3-DSP SH7710 CPU.

config CPU_SUBTYPE_SH7712
        bool "Support SH7712 processor"
        select CPU_SH3
        select CPU_HAS_DSP
        help
          Select SH7712 if you have a SH3-DSP SH7712 CPU.

config CPU_SUBTYPE_SH7720
        bool "Support SH7720 processor"
        select CPU_SH3
        select CPU_HAS_DSP
        help
          Select SH7720 if you have a SH3-DSP SH7720 CPU.

# SH-4 Processor Support

config CPU_SUBTYPE_SH7750
        bool "Support SH7750 processor"
        select CPU_SH4
        help
          Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.

config CPU_SUBTYPE_SH7091
        bool "Support SH7091 processor"
        select CPU_SH4
        help
          Select SH7091 if you have an SH-4 based Sega device (such as
          the Dreamcast, Naomi, and Naomi 2).

config CPU_SUBTYPE_SH7750R
        bool "Support SH7750R processor"
        select CPU_SH4

config CPU_SUBTYPE_SH7750S
        bool "Support SH7750S processor"
        select CPU_SH4

config CPU_SUBTYPE_SH7751
        bool "Support SH7751 processor"
        select CPU_SH4
        help
          Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
          or if you have a HD6417751R CPU.

config CPU_SUBTYPE_SH7751R
        bool "Support SH7751R processor"
        select CPU_SH4

config CPU_SUBTYPE_SH7760
        bool "Support SH7760 processor"
        select CPU_SH4

config CPU_SUBTYPE_SH4_202
        bool "Support SH4-202 processor"
        select CPU_SH4

# SH-4A Processor Support

config CPU_SUBTYPE_SH7770
        bool "Support SH7770 processor"
        select CPU_SH4A

config CPU_SUBTYPE_SH7780
        bool "Support SH7780 processor"
        select CPU_SH4A

config CPU_SUBTYPE_SH7785
        bool "Support SH7785 processor"
        select CPU_SH4A
        select CPU_SHX2
        select ARCH_SPARSEMEM_ENABLE
        select SYS_SUPPORTS_NUMA

config CPU_SUBTYPE_SHX3
        bool "Support SH-X3 processor"
        select CPU_SH4A
        select CPU_SHX3
        select ARCH_SPARSEMEM_ENABLE
        select SYS_SUPPORTS_NUMA
        select SYS_SUPPORTS_SMP

# SH4AL-DSP Processor Support

config CPU_SUBTYPE_SH7343
        bool "Support SH7343 processor"
        select CPU_SH4AL_DSP

config CPU_SUBTYPE_SH7722
        bool "Support SH7722 processor"
        select CPU_SH4AL_DSP
        select CPU_SHX2
        select ARCH_SPARSEMEM_ENABLE
        select SYS_SUPPORTS_NUMA

endchoice

menu "Memory management options"

config QUICKLIST
        def_bool y

config MMU
        bool "Support for memory management hardware"
        depends on !CPU_SH2
        default y
        help
          Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to
          boot on these systems, this option must not be set.

          On other systems (such as the SH-3 and 4) where an MMU exists,
          turning this off will boot the kernel on these machines with the
          MMU implicitly switched off.

config PAGE_OFFSET
        hex
        default "0x80000000" if MMU
        default "0x00000000"

config MEMORY_START
        hex "Physical memory start address"
        default "0x08000000"
        ---help---
          Computers built with Hitachi SuperH processors always
          map the ROM starting at address zero.  But the processor
          does not specify the range that RAM takes.

          The physical memory (RAM) start address will be automatically
          set to 08000000. Other platforms, such as the Solution Engine
          boards typically map RAM at 0C000000.

          Tweak this only when porting to a new machine which does not
          already have a defconfig. Changing it from the known correct
          value on any of the known systems will only lead to disaster.

config MEMORY_SIZE
        hex "Physical memory size"
        default "0x00400000"
        help
          This sets the default memory size assumed by your SH kernel. It can
          be overridden as normal by the 'mem=' argument on the kernel command
          line. If unsure, consult your board specifications or just leave it
          as 0x00400000 which was the default value before this became
          configurable.

config 32BIT
        bool "Support 32-bit physical addressing through PMB"
        depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
        default y
        help
          If you say Y here, physical addressing will be extended to
          32-bits through the SH-4A PMB. If this is not set, legacy
          29-bit physical addressing will be used.

config X2TLB
        bool "Enable extended TLB mode"
        depends on (CPU_SHX2 || CPU_SHX3) && MMU && EXPERIMENTAL
        help
          Selecting this option will enable the extended mode of the SH-X2
          TLB. For legacy SH-X behaviour and interoperability, say N. For
          all of the fun new features and a willingless to submit bug reports,
          say Y.

config VSYSCALL
        bool "Support vsyscall page"
        depends on MMU
        default y
        help
          This will enable support for the kernel mapping a vDSO page
          in process space, and subsequently handing down the entry point
          to the libc through the ELF auxiliary vector.

          From the kernel side this is used for the signal trampoline.
          For systems with an MMU that can afford to give up a page,
          (the default value) say Y.

config NUMA
        bool "Non Uniform Memory Access (NUMA) Support"
        depends on MMU && SYS_SUPPORTS_NUMA && EXPERIMENTAL
        default n
        help
          Some SH systems have many various memories scattered around
          the address space, each with varying latencies. This enables
          support for these blocks by binding them to nodes and allowing
          memory policies to be used for prioritizing and controlling
          allocation behaviour.

config NODES_SHIFT
        int
        default "3" if CPU_SUBTYPE_SHX3
        default "1"
        depends on NEED_MULTIPLE_NODES

config ARCH_FLATMEM_ENABLE
        def_bool y
        depends on !NUMA

config ARCH_SPARSEMEM_ENABLE
        def_bool y
        select SPARSEMEM_STATIC

config ARCH_SPARSEMEM_DEFAULT
        def_bool y

config MAX_ACTIVE_REGIONS
        int
        default "6" if (CPU_SUBTYPE_SHX3 && SPARSEMEM)
        default "2" if SPARSEMEM && (CPU_SUBTYPE_SH7722 || \
                       CPU_SUBTYPE_SH7785)
        default "1"

config ARCH_POPULATES_NODE_MAP
        def_bool y

config ARCH_SELECT_MEMORY_MODEL
        def_bool y

config ARCH_ENABLE_MEMORY_HOTPLUG
        def_bool y
        depends on SPARSEMEM

config ARCH_MEMORY_PROBE
        def_bool y
        depends on MEMORY_HOTPLUG

choice
        prompt "Kernel page size"
        default PAGE_SIZE_8KB if X2TLB
        default PAGE_SIZE_4KB

config PAGE_SIZE_4KB
        bool "4kB"
        depends on !X2TLB
        help
          This is the default page size used by all SuperH CPUs.

config PAGE_SIZE_8KB
        bool "8kB"
        depends on X2TLB
        help
          This enables 8kB pages as supported by SH-X2 and later MMUs.

config PAGE_SIZE_64KB
        bool "64kB"
        depends on CPU_SH4
        help
          This enables support for 64kB pages, possible on all SH-4
          CPUs and later.

endchoice

choice
        prompt "HugeTLB page size"
        depends on HUGETLB_PAGE && CPU_SH4 && MMU
        default HUGETLB_PAGE_SIZE_64K

config HUGETLB_PAGE_SIZE_64K
        bool "64kB"

config HUGETLB_PAGE_SIZE_256K
        bool "256kB"
        depends on X2TLB

config HUGETLB_PAGE_SIZE_1MB
        bool "1MB"

config HUGETLB_PAGE_SIZE_4MB
        bool "4MB"
        depends on X2TLB

config HUGETLB_PAGE_SIZE_64MB
        bool "64MB"
        depends on X2TLB

endchoice

source "mm/Kconfig"

endmenu

menu "Cache configuration"

config SH7705_CACHE_32KB
        bool "Enable 32KB cache size for SH7705"
        depends on CPU_SUBTYPE_SH7705
        default y

config SH_DIRECT_MAPPED
        bool "Use direct-mapped caching"
        default n
        help
          Selecting this option will configure the caches to be direct-mapped,
          even if the cache supports a 2 or 4-way mode. This is useful primarily
          for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
          SH4-202, SH4-501, etc.)

          Turn this option off for platforms that do not have a direct-mapped
          cache, and you have no need to run the caches in such a configuration.

choice
        prompt "Cache mode"
        default CACHE_WRITEBACK if CPU_SH2A || CPU_SH3 || CPU_SH4
        default CACHE_WRITETHROUGH if (CPU_SH2 && !CPU_SH2A)

config CACHE_WRITEBACK
        bool "Write-back"
        depends on CPU_SH2A || CPU_SH3 || CPU_SH4

config CACHE_WRITETHROUGH
        bool "Write-through"
        help
          Selecting this option will configure the caches in write-through
          mode, as opposed to the default write-back configuration.

          Since there's sill some aliasing issues on SH-4, this option will
          unfortunately still require the majority of flushing functions to
          be implemented to deal with aliasing.

          If unsure, say N.

config CACHE_OFF
        bool "Off"

endchoice

endmenu