blob: 38bbf2e9f81527b2545a0116120ceee56af17808 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/** @file
*
* Copyright (c) 2011-2023, 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 UINTN 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);
}
}
}
|
