diff options
| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-02-28 17:16:58 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-02-28 17:16:58 +0000 |
| commit | 65acd8e7b3f2690f3e927e012fbd21f6bcfb17b2 (patch) | |
| tree | 008649d088181774670d2ffe28e15965adaa789c /ArmPlatformPkg/Drivers | |
| parent | f8c9f1c18c7d5630f6b6e633303bc4e8178334f1 (diff) | |
ArmPlatformPkg: Moved 'ArmTrustZoneLib' from ArmPkg/Library to ArmPlatformPkg/Drivers
This library is really the driver for the ARM Trustzone controllers (TZPC and TZASC).
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13054 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg/Drivers')
| -rw-r--r-- | ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.c | 106 | ||||
| -rw-r--r-- | ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.inf | 33 |
2 files changed, 139 insertions, 0 deletions
diff --git a/ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.c b/ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.c new file mode 100644 index 0000000000..26d4004f69 --- /dev/null +++ b/ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.c @@ -0,0 +1,106 @@ +/** @file
+*
+* Copyright (c) 2011-2012, 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
+* which accompanies this distribution. The full text of the license may be found at
+* http://opensource.org/licenses/bsd-license.php
+*
+* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+
+#include <Drivers/ArmTrustzone.h>
+
+#define TZPC_DECPROT0_STATUS_REG 0x800
+#define TZPC_DECPROT0_SET_REG 0x804
+#define TZPC_DECPROT0_CLEAR_REG 0x808
+
+#define TZASC_CONFIGURATION_REG 0x000
+#define TZASC_REGIONS_REG 0x100
+#define TZASC_REGION0_LOW_ADDRESS_REG 0x100
+#define TZASC_REGION0_HIGH_ADDRESS_REG 0x104
+#define TZASC_REGION0_ATTRIBUTES 0x108
+
+/**
+ FIXME: Need documentation
+**/
+EFI_STATUS
+TZPCSetDecProtBits (
+ IN UINTN TzpcBase,
+ IN UINTN TzpcId,
+ IN UINTN Bits
+ )
+{
+ if (TzpcId > TZPC_DECPROT_MAX) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ MmioWrite32 ((UINTN)TzpcBase + TZPC_DECPROT0_SET_REG + (TzpcId * 0x0C), Bits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ FIXME: Need documentation
+**/
+EFI_STATUS
+TZPCClearDecProtBits (
+ IN UINTN TzpcBase,
+ IN UINTN TzpcId,
+ IN UINTN Bits
+ )
+{
+ if (TzpcId> TZPC_DECPROT_MAX) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ MmioWrite32 ((UINTN)TzpcBase + TZPC_DECPROT0_CLEAR_REG + (TzpcId * 0x0C), Bits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ FIXME: Need documentation
+**/
+UINT32
+TZASCGetNumRegions (
+ IN UINTN TzascBase
+ )
+{
+ return (MmioRead32 ((UINTN)TzascBase + TZASC_CONFIGURATION_REG) & 0xF);
+}
+
+/**
+ FIXME: Need documentation
+**/
+EFI_STATUS
+TZASCSetRegion (
+ IN INTN TzascBase,
+ IN UINTN RegionId,
+ IN UINTN Enabled,
+ IN UINTN LowAddress,
+ IN UINTN HighAddress,
+ IN UINTN Size,
+ IN UINTN Security
+ )
+{
+ UINT32* Region;
+
+ if (RegionId > TZASCGetNumRegions(TzascBase)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Region = (UINT32*)((UINTN)TzascBase + TZASC_REGIONS_REG + (RegionId * 0x10));
+
+ MmioWrite32((UINTN)(Region), LowAddress&0xFFFF8000);
+ MmioWrite32((UINTN)(Region+1), HighAddress);
+ MmioWrite32((UINTN)(Region+2), ((Security & 0xF) <<28) | ((Size & 0x3F) << 1) | (Enabled & 0x1));
+
+ return EFI_SUCCESS;
+}
diff --git a/ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.inf b/ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.inf new file mode 100644 index 0000000000..176224bf46 --- /dev/null +++ b/ArmPlatformPkg/Drivers/ArmTrustZone/ArmTrustZone.inf @@ -0,0 +1,33 @@ +#/* @file
+# Copyright (c) 2011-2012, 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
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#*/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = ArmTrustZoneLib
+ FILE_GUID = 5962d040-8b8a-11df-9a71-0002a5d5c51b
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = ArmTrustZoneLib
+
+
+[Sources.common]
+ ArmTrustZone.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ ArmPkg/ArmPkg.dec
+ ArmPlatformPkg/ArmPlatformPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ IoLib
|