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powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M

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Add the ability for a classic ppc kernel to be loaded at an address
of 32MB.  This done by fixing a few places that assume we are loaded
at address 0, and by changing several uses of KERNELBASE to use
PAGE_OFFSET, instead.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Dale Farnsworth
2008-12-17 10:09:13 +00:00
committed by Paul Mackerras
parent 01695a9687
commit ccdcef72c2
5 changed files with 15 additions and 14 deletions
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4
arch/powerpc/mm/pgtable_32.c
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@ -269,7 +269,7 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
}
/*
* Map in a big chunk of physical memory starting at KERNELBASE.
* Map in a big chunk of physical memory starting at PAGE_OFFSET.
*/
void __init mapin_ram(void)
{
@ -278,7 +278,7 @@ void __init mapin_ram(void)
int ktext;
s = mmu_mapin_ram();
v = KERNELBASE + s;
v = PAGE_OFFSET + s;
p = memstart_addr + s;
for (; s < total_lowmem; s += PAGE_SIZE) {
ktext = ((char *) v >= _stext && (char *) v < etext);