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Merge pull request #646 from davwan01/dw/gicv3-wakeup

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CSS: Add support to wake up the core from wfi in GICv3
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danh-arm 2016-06-13 11:09:08 +01:00 committed by GitHub
commit eae9d91250
1 changed files with 8 additions and 2 deletions
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10
plat/arm/css/common/css_pm.c
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@ -262,8 +262,14 @@ void css_cpu_standby(plat_local_state_t cpu_state)
assert(cpu_state == ARM_LOCAL_STATE_RET);
scr = read_scr_el3();
/* Enable PhysicalIRQ bit for NS world to wake the CPU */
write_scr_el3(scr | SCR_IRQ_BIT);
/*
* Enable the Non secure interrupt to wake the CPU.
* In GICv3 affinity routing mode, the non secure group1 interrupts use
* the PhysicalFIQ at EL3 whereas in GICv2, it uses the PhysicalIRQ.
* Enabling both the bits works for both GICv2 mode and GICv3 affinity
* routing mode.
*/
write_scr_el3(scr | SCR_IRQ_BIT | SCR_FIQ_BIT);
isb();
dsb();
wfi();