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36 lines
884 B
C
36 lines
884 B
C
/** @file
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*
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* Copyright (c) 2011-2015, ARM Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#include <Uefi.h>
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#include <Library/IoLib.h>
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#include <Library/ArmGicLib.h>
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VOID
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EFIAPI
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ArmGicEnableDistributor (
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IN INTN GicDistributorBase
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)
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{
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ARM_GIC_ARCH_REVISION Revision;
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/*
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* Enable GIC distributor in Non-Secure world.
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* Note: The ICDDCR register is banked when Security extensions are implemented
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*/
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Revision = ArmGicGetSupportedArchRevision ();
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if (Revision == ARM_GIC_ARCH_REVISION_2) {
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MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
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} else {
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if (MmioRead32 (GicDistributorBase + ARM_GIC_ICDDCR) & ARM_GIC_ICDDCR_ARE) {
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MmioOr32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x2);
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} else {
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MmioOr32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
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}
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}
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}
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