diff options
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/idle_power4.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S index ba319547860..5328709eeed 100644 --- a/arch/powerpc/kernel/idle_power4.S +++ b/arch/powerpc/kernel/idle_power4.S @@ -53,3 +53,24 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) isync b 1b +_GLOBAL(power4_cpu_offline_powersave) + /* Go to NAP now */ + mfmsr r7 + rldicl r0,r7,48,1 + rotldi r0,r0,16 + mtmsrd r0,1 /* hard-disable interrupts */ + li r0,1 + li r6,0 + stb r0,PACAHARDIRQEN(r13) /* we'll hard-enable shortly */ + stb r6,PACASOFTIRQEN(r13) /* soft-disable irqs */ +BEGIN_FTR_SECTION + DSSALL + sync +END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) + ori r7,r7,MSR_EE + oris r7,r7,MSR_POW@h + sync + isync + mtmsrd r7 + isync + blr |