diff options
Diffstat (limited to 'arch/arm/mach-mvebu/coherency_ll.S')
| -rw-r--r-- | arch/arm/mach-mvebu/coherency_ll.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/coherency_ll.S b/arch/arm/mach-mvebu/coherency_ll.S index f2e2e8677c4b..6828f9f157b0 100644 --- a/arch/arm/mach-mvebu/coherency_ll.S +++ b/arch/arm/mach-mvebu/coherency_ll.S @@ -102,6 +102,26 @@ ENTRY(ll_enable_coherency) mov pc, lr ENDPROC(ll_enable_coherency) +ENTRY(ll_disable_coherency) + /* + * r0 being untouched in ll_get_coherency_base and + * ll_get_cpuid, we can use it to save lr modifing it with the + * following bl + */ + mov r0, lr + bl ll_get_coherency_base + bl ll_get_cpuid + mov lr, r0 + add r0, r1, #ARMADA_XP_CFB_CTL_REG_OFFSET +1: + ldrex r2, [r0] + bic r2, r2, r3 + strex r1, r2, [r0] + cmp r1, #0 + bne 1b + dsb + mov pc, lr +ENDPROC(ll_disable_coherency) .align 2 3: |