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ArmPkg/ArmGic: Use the GIC Redistributor instead of GIC Distributor for GICv3

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GICv3 controller with no GICv2 legacy support must use the GIC
Redistributor registers instead of the GIC Distributor registers
for some operations (eg: enable/disable interrupts).

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Tested-by: Ard Biesheuvel <ard@linaro.org>
Reviewed-by: Ard Biesheuvel <ard@linaro.org>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16874 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin
2015-02-16 10:23:42 +00:00
committed by oliviermartin
parent 8705cb3806
commit 41fb5d4634
6 changed files with 86 additions and 37 deletions
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11
ArmPkg/Drivers/ArmGic/ArmGicNonSecLib.c
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@@ -1,6 +1,6 @@
/** @file
*
* Copyright (c) 2011-2014, ARM Limited. All rights reserved.
* Copyright (c) 2011-2015, ARM Limited. All rights reserved.
*
* This program and the accompanying materials
* are licensed and made available under the terms and conditions of the BSD License
@@ -22,9 +22,16 @@ ArmGicEnableDistributor (
IN INTN GicDistributorBase
)
{
ARM_GIC_ARCH_REVISION Revision;
/*
* Enable GIC distributor in Non-Secure world.
* Note: The ICDDCR register is banked when Security extensions are implemented
*/
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
Revision = ArmGicGetSupportedArchRevision ();
if (Revision == ARM_GIC_ARCH_REVISION_2) {
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
} else {
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x2);
}
}