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ArmPkg/ArmGic: Fix GICv3 in GICv2 legacy mode

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- GIC distributor needs to be programmed to target interrupts
on the boot CPU using the Interrupt Processor Targets Registers
- Enabling the GIC Distributor is different following the value
of GICD_CTLR.ARE_NS.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16926 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin
2015-02-25 18:42:36 +00:00
committed by oliviermartin
parent 26a363747d
commit 152ac48945
2 changed files with 30 additions and 6 deletions
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6
ArmPkg/Drivers/ArmGic/ArmGicNonSecLib.c
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@@ -32,6 +32,10 @@ ArmGicEnableDistributor (
if (Revision == ARM_GIC_ARCH_REVISION_2) {
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
} else {
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x2);
if (MmioRead32 (GicDistributorBase + ARM_GIC_ICDDCR) & ARM_GIC_ICDDCR_ARE) {
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x2);
} else {
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
}
}
}