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

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>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 9d97db7b7cf7..45d925360b89 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -95,16 +95,16 @@ unsigned long __init mmu_mapin_ram(void)
                         break;
         }
 
-        setbat(2, KERNELBASE, 0, bl, _PAGE_RAM);
-        done = (unsigned long)bat_addrs[2].limit - KERNELBASE + 1;
+        setbat(2, PAGE_OFFSET, 0, bl, _PAGE_RAM);
+        done = (unsigned long)bat_addrs[2].limit - PAGE_OFFSET + 1;
         if ((done < tot) && !bat_addrs[3].limit) {
                 /* use BAT3 to cover a bit more */
                 tot -= done;
                 for (bl = 128<<10; bl < max_size; bl <<= 1)
                         if (bl * 2 > tot)
                                 break;
-                setbat(3, KERNELBASE+done, done, bl, _PAGE_RAM);
-                done = (unsigned long)bat_addrs[3].limit - KERNELBASE + 1;
+                setbat(3, PAGE_OFFSET+done, done, bl, _PAGE_RAM);
+                done = (unsigned long)bat_addrs[3].limit - PAGE_OFFSET + 1;
         }
 
         return done;