diff options
Diffstat (limited to 'arch/powerpc/kernel/head.S')
| -rw-r--r-- | arch/powerpc/kernel/head.S | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/head.S b/arch/powerpc/kernel/head.S index 2c3a1d34e3c7..d49bff1a7d51 100644 --- a/arch/powerpc/kernel/head.S +++ b/arch/powerpc/kernel/head.S @@ -134,11 +134,13 @@ __start: * because OF may have I/O devices mapped into that area * (particularly on CHRP). */ - mr r31,r3 /* save parameters */ + cmpwi 0,r5,0 + beq 1f + bl prom_init + trap + +1: mr r31,r3 /* save parameters */ mr r30,r4 - mr r29,r5 - mr r28,r6 - mr r27,r7 li r24,0 /* cpu # */ /* @@ -204,8 +206,7 @@ __after_mmu_off: * On CHRP, we are loaded at 0x10000 since OF on CHRP uses * the exception vectors at 0 (and therefore this copy * overwrites OF's exception vectors with our own). - * If the MMU is already turned on, we copy stuff to KERNELBASE, - * otherwise we copy it to 0. + * The MMU is off at this point. */ bl reloc_offset mr r26,r3 @@ -1187,9 +1188,6 @@ start_here: */ mr r3,r31 mr r4,r30 - mr r5,r29 - mr r6,r28 - mr r7,r27 bl machine_init bl MMU_init |