diff options
Diffstat (limited to 'arch/powerpc/platforms/44x/misc_44x.S')
| -rw-r--r-- | arch/powerpc/platforms/44x/misc_44x.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/44x/misc_44x.S b/arch/powerpc/platforms/44x/misc_44x.S index 52bde71..3bce71d 100644 --- a/arch/powerpc/platforms/44x/misc_44x.S +++ b/arch/powerpc/platforms/44x/misc_44x.S @@ -15,6 +15,37 @@ .text /* + * Do an IO access in AS1 + */ +_GLOBAL(as1_readb) + mfmsr r7 + ori r0,r7,MSR_DS + sync + mtmsr r0 + sync + isync + lbz r3,0(r3) + sync + mtmsr r7 + sync + isync + blr + +_GLOBAL(as1_writeb) + mfmsr r7 + ori r0,r7,MSR_DS + sync + mtmsr r0 + sync + isync + stb r3,0(r4) + sync + mtmsr r7 + sync + isync + blr + +/* * void ppc44x_reset_system(char *cmd) * * At present, this routine just applies a system reset. |