diff options
Diffstat (limited to 'arch/powerpc/kernel/head_64.S')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index da0924293496..f2fab687a01c 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -1664,6 +1664,9 @@ _STATIC(__after_prom_start) /* i.e. where we are running */ /* the source addr */ + cmpdi r4,0 /* In some cases the loader may */ + beq .start_here_multiplatform /* have already put us at zero */ + /* so we can skip the copy. */ LOAD_REG_IMMEDIATE(r5,copy_to_here) /* # bytes of memory to copy */ sub r5,r5,r27 |