36 lines
884 B
C
36 lines
884 B
C
/** @file
|
|
*
|
|
* Copyright (c) 2011-2015, ARM Limited. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
*
|
|
**/
|
|
|
|
#include <Uefi.h>
|
|
#include <Library/IoLib.h>
|
|
#include <Library/ArmGicLib.h>
|
|
|
|
VOID
|
|
EFIAPI
|
|
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
|
|
*/
|
|
Revision = ArmGicGetSupportedArchRevision ();
|
|
if (Revision == ARM_GIC_ARCH_REVISION_2) {
|
|
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
|
|
} else {
|
|
if (MmioRead32 (GicDistributorBase + ARM_GIC_ICDDCR) & ARM_GIC_ICDDCR_ARE) {
|
|
MmioOr32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x2);
|
|
} else {
|
|
MmioOr32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x1);
|
|
}
|
|
}
|
|
}
|