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Diffstat (limited to 'arch/sh/mm/Kconfig')
| -rw-r--r-- | arch/sh/mm/Kconfig | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 9064dfc91e6d..f25903aa607b 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -161,6 +161,37 @@ config MMU 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 CPU_SH4A |