# # 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_SUBTYPE_ST40 && !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_SUBTYPE_ST40 bool select CPU_SH4 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 # ST40 Processor Support config CPU_SUBTYPE_ST40STB1 bool "Support ST40STB1/ST40RA processors" select CPU_SUBTYPE_ST40 help Select ST40STB1 if you have a ST40RA CPU. This was previously called the ST40STB1, hence the option name. config CPU_SUBTYPE_ST40GX1 bool "Support ST40GX1 processor" select CPU_SUBTYPE_ST40 help Select ST40GX1 if you have a ST40GX1 CPU. # 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 # 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 && 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 (CPU_SUBTYPE_SH7722 && SPARSEMEM) 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_4KB config PAGE_SIZE_4KB bool "4kB" help This is the default page size used by all SuperH CPUs. config PAGE_SIZE_8KB bool "8kB" depends on EXPERIMENTAL && X2TLB help This enables 8kB pages as supported by SH-X2 and later MMUs. config PAGE_SIZE_64KB bool "64kB" depends on EXPERIMENTAL && CPU_SH4 help This enables support for 64kB pages, possible on all SH-4 CPUs and later. Highly experimental, not recommended. 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