diff options
Diffstat (limited to 'arch/arm/mach-vexpress/tc2_pm_setup.S')
| -rw-r--r-- | arch/arm/mach-vexpress/tc2_pm_setup.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-vexpress/tc2_pm_setup.S b/arch/arm/mach-vexpress/tc2_pm_setup.S index 046890e5ff8..4728f83731a 100644 --- a/arch/arm/mach-vexpress/tc2_pm_setup.S +++ b/arch/arm/mach-vexpress/tc2_pm_setup.S @@ -16,6 +16,7 @@ #define SPC_PHYS_BASE 0x7FFF0000 +#define SPC_WAKE_INT_STAT 0xb2c #define SNOOP_CTL_A15 0x404 #define SNOOP_CTL_A7 0x504 @@ -42,6 +43,19 @@ #define CCI_A7_OFFSET CCI_SLAVE_OFFSET(CCI_SLAVE_A7) +ENTRY(tc2_resume) + mrc p15, 0, r0, c0, c0, 5 + ubfx r1, r0, #0, #4 @ r1 = cpu + ubfx r2, r0, #8, #4 @ r2 = cluster + add r1, r1, r2, lsl #2 @ r1 = index of CPU in WAKE_INT_STAT + ldr r3, =SPC_PHYS_BASE + SPC_WAKE_INT_STAT + ldr r3, [r3] + lsr r3, r1 + tst r3, #1 + wfieq @ if no pending IRQ reenters wfi + b mcpm_entry_point +ENDPROC(tc2_resume) + /* * Enable cluster-level coherency, in preparation for turning on the MMU. * The ACTLR SMP bit does not need to be set here, because cpu_resume() |