diff options
Diffstat (limited to 'arch/sh/mm/Kconfig')
| -rw-r--r-- | arch/sh/mm/Kconfig | 69 |
1 files changed, 28 insertions, 41 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 2795618e4f07..c3e61b366493 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -75,56 +75,25 @@ config MEMORY_SIZE config 29BIT def_bool !32BIT depends on SUPERH32 + select UNCACHED_MAPPING config 32BIT bool - default y if CPU_SH5 - -config PMB_ENABLE - bool "Support 32-bit physical addressing through PMB" - depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785) - select 32BIT - 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. - -choice - prompt "PMB handling type" - depends on PMB_ENABLE - default PMB_FIXED + default y if CPU_SH5 || !MMU config PMB - bool "PMB" - depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785) + bool "Support 32-bit physical addressing through PMB" + depends on MMU && EXPERIMENTAL && CPU_SH4A && !CPU_SH4AL_DSP select 32BIT + select UNCACHED_MAPPING 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 PMB_FIXED - bool "fixed PMB" - depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7780 || \ - CPU_SUBTYPE_SH7785) - select 32BIT - help - If this option is enabled, fixed PMB mappings are inherited - from the boot loader, and the kernel does not attempt dynamic - management. This is the closest to legacy 29-bit physical mode, - and allows systems to support up to 512MiB of system memory. - -endchoice - 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. + def_bool y + depends on (CPU_SHX2 || CPU_SHX3) && MMU config VSYSCALL bool "Support vsyscall page" @@ -192,14 +161,23 @@ config ARCH_MEMORY_PROBE def_bool y depends on MEMORY_HOTPLUG +config IOREMAP_FIXED + def_bool y + depends on X2TLB || SUPERH64 + +config UNCACHED_MAPPING + bool + +config HAVE_SRAM_POOL + bool + select GENERIC_ALLOCATOR + choice prompt "Kernel page size" - default PAGE_SIZE_8KB if X2TLB default PAGE_SIZE_4KB config PAGE_SIZE_4KB bool "4kB" - depends on !MMU || !X2TLB help This is the default page size used by all SuperH CPUs. @@ -226,7 +204,7 @@ endchoice choice prompt "HugeTLB page size" - depends on HUGETLB_PAGE && (CPU_SH4 || CPU_SH5) && MMU + depends on HUGETLB_PAGE default HUGETLB_PAGE_SIZE_1MB if PAGE_SIZE_64KB default HUGETLB_PAGE_SIZE_64K @@ -257,6 +235,15 @@ endchoice source "mm/Kconfig" +config SCHED_MC + bool "Multi-core scheduler support" + depends on SMP + default y + help + Multi-core scheduler support improves the CPU scheduler's decision + making when dealing with multi-core CPU chips at a cost of slightly + increased overhead in some places. If unsure say N here. + endmenu menu "Cache configuration" |