diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-07-01 09:56:10 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-07-01 09:56:26 +0200 |
| commit | 087021ba41e9481202103d51d3dd0c4706899a2b (patch) | |
| tree | bf5d67420fd176682a1f8f1e9342ad397c23937a /arch/powerpc/kernel/head_32.S | |
| parent | fb9c818873a788c5c01c9868cc6050df96e2c7df (diff) | |
| parent | e83c2b0ff325f52dda1aff3572d0e1516216c54b (diff) | |
Merge branch 'linus' into perfcounters/urgent
Merge reason: this branch was on a .30-ish base before, update
it to an almost-.31-rc2 upstream base to pick up fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/powerpc/kernel/head_32.S')
| -rw-r--r-- | arch/powerpc/kernel/head_32.S | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index 48469463f89..fc213294275 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -1124,9 +1124,8 @@ mmu_off: RFI /* - * Use the first pair of BAT registers to map the 1st 16MB - * of RAM to PAGE_OFFSET. From this point on we can't safely - * call OF any more. + * On 601, we use 3 BATs to map up to 24M of RAM at _PAGE_OFFSET + * (we keep one for debugging) and on others, we use one 256M BAT. */ initial_bats: lis r11,PAGE_OFFSET@h @@ -1136,12 +1135,16 @@ initial_bats: bne 4f ori r11,r11,4 /* set up BAT registers for 601 */ li r8,0x7f /* valid, block length = 8MB */ - oris r9,r11,0x800000@h /* set up BAT reg for 2nd 8M */ - oris r10,r8,0x800000@h /* set up BAT reg for 2nd 8M */ mtspr SPRN_IBAT0U,r11 /* N.B. 601 has valid bit in */ mtspr SPRN_IBAT0L,r8 /* lower BAT register */ - mtspr SPRN_IBAT1U,r9 - mtspr SPRN_IBAT1L,r10 + addis r11,r11,0x800000@h + addis r8,r8,0x800000@h + mtspr SPRN_IBAT1U,r11 + mtspr SPRN_IBAT1L,r8 + addis r11,r11,0x800000@h + addis r8,r8,0x800000@h + mtspr SPRN_IBAT2U,r11 + mtspr SPRN_IBAT2L,r8 isync blr |