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authorMatt Fleming <matt@console-pimps.org>2009-11-05 07:54:17 +0000
committerMatt Fleming <matt@console-pimps.org>2010-01-16 14:31:36 +0000
commit4d35b93a66e9b87df20784fcf130d2e8760be53f (patch)
treeaf0b82ab28a0e4142130c6510cc06cca3d4a67aa /arch/sh/mm/Kconfig
parent07cad4dc1bfdaefd20c6329e9d8179ad1c600e92 (diff)
downloadop-kernel-dev-4d35b93a66e9b87df20784fcf130d2e8760be53f.zip
op-kernel-dev-4d35b93a66e9b87df20784fcf130d2e8760be53f.tar.gz
sh: Add fixed ioremap support
Some devices need to be ioremap'd and accessed very early in the boot process. It is not possible to use the standard ioremap() function in this case because that requires kmalloc()'ing some virtual address space and kmalloc() may not be available so early in boot. This patch provides fixmap mappings that allow physical address ranges to be remapped into the kernel address space during the early boot stages. Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/mm/Kconfig')
-rw-r--r--arch/sh/mm/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 7a4ebc8..b890752 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -169,6 +169,10 @@ config ARCH_MEMORY_PROBE
def_bool y
depends on MEMORY_HOTPLUG
+config IOREMAP_FIXED
+ def_bool y
+ depends on X2TLB || SUPERH64
+
choice
prompt "Kernel page size"
default PAGE_SIZE_4KB
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