summaryrefslogtreecommitdiffstats
path: root/arch/sh/mm/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/mm/Kconfig')
-rw-r--r--arch/sh/mm/Kconfig48
1 files changed, 13 insertions, 35 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 986a71b..1445ca6 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -75,52 +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_SH4A && !CPU_SH4AL_DSP
- 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
-
config PMB
- bool "PMB"
+ 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_SH4A && !CPU_SH4AL_DSP
- 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"
@@ -188,14 +161,19 @@ 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
+
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.
OpenPOWER on IntegriCloud