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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-05-27 13:44:50 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-05-27 16:32:50 +1000
commitf637a49e507c88354ab32b5d914e06acfb7ee00d (patch)
tree60ec94bc3dcf323028faf8b7fd31e6d4c73f2bb5 /arch/powerpc/mm/init_32.c
parentb16e7766d6436835f473ba823ad04fbdfe5e9cbd (diff)
downloadblackbird-op-linux-f637a49e507c88354ab32b5d914e06acfb7ee00d.tar.gz
blackbird-op-linux-f637a49e507c88354ab32b5d914e06acfb7ee00d.zip
powerpc: Minor cleanups of kernel virt address space definitions
Make FIXADDR_TOP a compile time constant and cleanup a couple of definitions relative to the layout of the kernel address space on ppc32. We also print out that layout at boot time for debugging purposes. This is a pre-requisite for properly fixing non-coherent DMA allocactions. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm/init_32.c')
-rw-r--r--arch/powerpc/mm/init_32.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 666a5e8a5be1..3de6a0d93824 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -168,12 +168,8 @@ void __init MMU_init(void)
ppc_md.progress("MMU:mapin", 0x301);
mapin_ram();
-#ifdef CONFIG_HIGHMEM
- ioremap_base = PKMAP_BASE;
-#else
- ioremap_base = 0xfe000000UL; /* for now, could be 0xfffff000 */
-#endif /* CONFIG_HIGHMEM */
- ioremap_bot = ioremap_base;
+ /* Initialize early top-down ioremap allocator */
+ ioremap_bot = IOREMAP_TOP;
/* Map in I/O resources */
if (ppc_md.progress)
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