1 /** @file
2 *
3 * Copyright (c) 2011-2014, ARM Limited. All rights reserved.
4 *
5 * This program and the accompanying materials
6 * are licensed and made available under the terms and conditions of the BSD License
7 * which accompanies this distribution. The full text of the license may be found at
8 * http://opensource.org/licenses/bsd-license.php
9 *
10 * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12 *
13 **/
14
15 #include <Base.h>
16 #include <Library/DebugLib.h>
17 #include <Library/IoLib.h>
18 #include <Library/ArmGicLib.h>
19
20 /*
21 * This function configures the interrupts set by the mask to be secure.
22 *
23 */
24 VOID
25 EFIAPI
ArmGicSetSecureInterrupts(IN UINTN GicDistributorBase,IN UINTN * GicSecureInterruptMask,IN UINTN GicSecureInterruptMaskSize)26 ArmGicSetSecureInterrupts (
27 IN UINTN GicDistributorBase,
28 IN UINTN* GicSecureInterruptMask,
29 IN UINTN GicSecureInterruptMaskSize
30 )
31 {
32 UINTN Index;
33 UINT32 InterruptStatus;
34
35 // We must not have more interrupts defined by the mask than the number of available interrupts
36 ASSERT(GicSecureInterruptMaskSize <= (ArmGicGetMaxNumInterrupts (GicDistributorBase) / 32));
37
38 // Set all the interrupts defined by the mask as Secure
39 for (Index = 0; Index < GicSecureInterruptMaskSize; Index++) {
40 InterruptStatus = MmioRead32 (GicDistributorBase + ARM_GIC_ICDISR + (Index * 4));
41 MmioWrite32 (GicDistributorBase + ARM_GIC_ICDISR + (Index * 4), InterruptStatus & (~GicSecureInterruptMask[Index]));
42 }
43 }
44
45 VOID
46 EFIAPI
ArmGicEnableDistributor(IN INTN GicDistributorBase)47 ArmGicEnableDistributor (
48 IN INTN GicDistributorBase
49 )
50 {
51 // Turn on the GIC distributor
52 MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 1);
53 }
54
55 VOID
56 EFIAPI
ArmGicSetupNonSecure(IN UINTN MpId,IN INTN GicDistributorBase,IN INTN GicInterruptInterfaceBase)57 ArmGicSetupNonSecure (
58 IN UINTN MpId,
59 IN INTN GicDistributorBase,
60 IN INTN GicInterruptInterfaceBase
61 )
62 {
63 ArmGicV2SetupNonSecure (MpId, GicDistributorBase, GicInterruptInterfaceBase);
64 }
65