diff options
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/ArmPkg.dec | 1 | ||||
| -rw-r--r-- | ArmPkg/ArmPkg.dsc | 1 | ||||
| -rw-r--r-- | ArmPkg/Include/Library/StandaloneMmMmuLib.h | 42 | ||||
| -rw-r--r-- | ArmPkg/Library/StandaloneMmMmuLib/Aarch64/ArmMmuStandaloneMmLib.c | 185 | ||||
| -rw-r--r-- | ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf | 36 |
5 files changed, 265 insertions, 0 deletions
diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec index 0db7aa9d30..d99eb6769f 100644 --- a/ArmPkg/ArmPkg.dec +++ b/ArmPkg/ArmPkg.dec @@ -42,6 +42,7 @@ ArmMtlLib|ArmPlatformPkg/Include/Library/ArmMtlLib.h
ArmSvcLib|Include/Library/ArmSvcLib.h
OpteeLib|Include/Library/OpteeLib.h
+ StandaloneMmMmuLib|Include/Library/StandaloneMmMmuLib.h
[Guids.common]
gArmTokenSpaceGuid = { 0xBB11ECFE, 0x820F, 0x4968, { 0xBB, 0xA6, 0xF7, 0x6A, 0xFE, 0x30, 0x25, 0x96 } }
diff --git a/ArmPkg/ArmPkg.dsc b/ArmPkg/ArmPkg.dsc index 810caaff62..acf679651d 100644 --- a/ArmPkg/ArmPkg.dsc +++ b/ArmPkg/ArmPkg.dsc @@ -117,6 +117,7 @@ ArmPkg/Library/ArmPsciResetSystemLib/ArmPsciResetSystemLib.inf
ArmPkg/Library/ArmExceptionLib/ArmExceptionLib.inf
ArmPkg/Library/ArmExceptionLib/ArmRelocateExceptionLib.inf
+ ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf
ArmPkg/Drivers/CpuDxe/CpuDxe.inf
ArmPkg/Drivers/CpuPei/CpuPei.inf
diff --git a/ArmPkg/Include/Library/StandaloneMmMmuLib.h b/ArmPkg/Include/Library/StandaloneMmMmuLib.h new file mode 100644 index 0000000000..1f7653d004 --- /dev/null +++ b/ArmPkg/Include/Library/StandaloneMmMmuLib.h @@ -0,0 +1,42 @@ +/** @file
+
+ Copyright (c) 2018, ARM Ltd. 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.
+
+**/
+
+#ifndef __STANDALONEMM_MMU_LIB__
+#define __STANDALONEMM_MMU_LIB__
+
+EFI_STATUS
+ArmSetMemoryRegionNoExec (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
+EFI_STATUS
+ArmClearMemoryRegionNoExec (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
+EFI_STATUS
+ArmSetMemoryRegionReadOnly (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
+EFI_STATUS
+ArmClearMemoryRegionReadOnly (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
+#endif /* __STANDALONEMM_MMU_LIB__ */
diff --git a/ArmPkg/Library/StandaloneMmMmuLib/Aarch64/ArmMmuStandaloneMmLib.c b/ArmPkg/Library/StandaloneMmMmuLib/Aarch64/ArmMmuStandaloneMmLib.c new file mode 100644 index 0000000000..3095d7125d --- /dev/null +++ b/ArmPkg/Library/StandaloneMmMmuLib/Aarch64/ArmMmuStandaloneMmLib.c @@ -0,0 +1,185 @@ +/** @file
+* File managing the MMU for ARMv8 architecture in S-EL0
+*
+* Copyright (c) 2017 - 2018, 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 <Uefi.h>
+#include <IndustryStandard/ArmMmSvc.h>
+
+#include <Library/ArmLib.h>
+#include <Library/ArmMmuLib.h>
+#include <Library/ArmSvcLib.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+
+STATIC
+EFI_STATUS
+GetMemoryPermissions (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ OUT UINT32 *MemoryAttributes
+ )
+{
+ ARM_SVC_ARGS GetMemoryPermissionsSvcArgs = {0};
+
+ GetMemoryPermissionsSvcArgs.Arg0 = ARM_SVC_ID_SP_GET_MEM_ATTRIBUTES_AARCH64;
+ GetMemoryPermissionsSvcArgs.Arg1 = BaseAddress;
+ GetMemoryPermissionsSvcArgs.Arg2 = 0;
+ GetMemoryPermissionsSvcArgs.Arg3 = 0;
+
+ ArmCallSvc (&GetMemoryPermissionsSvcArgs);
+ if (GetMemoryPermissionsSvcArgs.Arg0 == ARM_SVC_SPM_RET_INVALID_PARAMS) {
+ *MemoryAttributes = 0;
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *MemoryAttributes = GetMemoryPermissionsSvcArgs.Arg0;
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+RequestMemoryPermissionChange (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINTN Permissions
+ )
+{
+ EFI_STATUS Status;
+ ARM_SVC_ARGS ChangeMemoryPermissionsSvcArgs = {0};
+
+ ChangeMemoryPermissionsSvcArgs.Arg0 = ARM_SVC_ID_SP_SET_MEM_ATTRIBUTES_AARCH64;
+ ChangeMemoryPermissionsSvcArgs.Arg1 = BaseAddress;
+ ChangeMemoryPermissionsSvcArgs.Arg2 = EFI_SIZE_TO_PAGES(Length);
+ ChangeMemoryPermissionsSvcArgs.Arg3 = Permissions;
+
+ ArmCallSvc (&ChangeMemoryPermissionsSvcArgs);
+
+ Status = ChangeMemoryPermissionsSvcArgs.Arg0;
+
+ switch (Status) {
+ case ARM_SVC_SPM_RET_SUCCESS:
+ Status = EFI_SUCCESS;
+ break;
+
+ case ARM_SVC_SPM_RET_NOT_SUPPORTED:
+ Status = EFI_UNSUPPORTED;
+ break;
+
+ case ARM_SVC_SPM_RET_INVALID_PARAMS:
+ Status = EFI_INVALID_PARAMETER;
+ break;
+
+ case ARM_SVC_SPM_RET_DENIED:
+ Status = EFI_ACCESS_DENIED;
+ break;
+
+ case ARM_SVC_SPM_RET_NO_MEMORY:
+ Status = EFI_BAD_BUFFER_SIZE;
+ break;
+
+ default:
+ Status = EFI_ACCESS_DENIED;
+ ASSERT (0);
+ }
+
+ return Status;
+}
+
+EFI_STATUS
+ArmSetMemoryRegionNoExec (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ )
+{
+ EFI_STATUS Status;
+ UINT32 MemoryAttributes;
+ UINT32 CodePermission;
+
+ Status = GetMemoryPermissions (BaseAddress, &MemoryAttributes);
+ if (Status != EFI_INVALID_PARAMETER) {
+ CodePermission = SET_MEM_ATTR_CODE_PERM_XN << SET_MEM_ATTR_CODE_PERM_SHIFT;
+ return RequestMemoryPermissionChange (
+ BaseAddress,
+ Length,
+ MemoryAttributes | CodePermission
+ );
+ }
+ return EFI_INVALID_PARAMETER;
+}
+
+EFI_STATUS
+ArmClearMemoryRegionNoExec (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ )
+{
+ EFI_STATUS Status;
+ UINT32 MemoryAttributes;
+ UINT32 CodePermission;
+
+ Status = GetMemoryPermissions (BaseAddress, &MemoryAttributes);
+ if (Status != EFI_INVALID_PARAMETER) {
+ CodePermission = SET_MEM_ATTR_CODE_PERM_XN << SET_MEM_ATTR_CODE_PERM_SHIFT;
+ return RequestMemoryPermissionChange (
+ BaseAddress,
+ Length,
+ MemoryAttributes & ~CodePermission
+ );
+ }
+ return EFI_INVALID_PARAMETER;
+}
+
+EFI_STATUS
+ArmSetMemoryRegionReadOnly (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ )
+{
+ EFI_STATUS Status;
+ UINT32 MemoryAttributes;
+ UINT32 DataPermission;
+
+ Status = GetMemoryPermissions (BaseAddress, &MemoryAttributes);
+ if (Status != EFI_INVALID_PARAMETER) {
+ DataPermission = SET_MEM_ATTR_DATA_PERM_RO << SET_MEM_ATTR_DATA_PERM_SHIFT;
+ return RequestMemoryPermissionChange (
+ BaseAddress,
+ Length,
+ MemoryAttributes | DataPermission
+ );
+ }
+ return EFI_INVALID_PARAMETER;
+}
+
+EFI_STATUS
+ArmClearMemoryRegionReadOnly (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ )
+{
+ EFI_STATUS Status;
+ UINT32 MemoryAttributes;
+ UINT32 PermissionRequest;
+
+ Status = GetMemoryPermissions (BaseAddress, &MemoryAttributes);
+ if (Status != EFI_INVALID_PARAMETER) {
+ PermissionRequest = SET_MEM_ATTR_MAKE_PERM_REQUEST (SET_MEM_ATTR_DATA_PERM_RW,
+ MemoryAttributes);
+ return RequestMemoryPermissionChange (
+ BaseAddress,
+ Length,
+ PermissionRequest
+ );
+ }
+ return EFI_INVALID_PARAMETER;
+}
diff --git a/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf new file mode 100644 index 0000000000..d589b23603 --- /dev/null +++ b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf @@ -0,0 +1,36 @@ +#/** @file
+#
+# Copyright (c) 2017 - 2018, 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 = 0x0001001A
+ BASE_NAME = ArmMmuStandaloneMmCoreLib
+ FILE_GUID = da8f0232-fb14-42f0-922c-63104d2c70bd
+ MODULE_TYPE = MM_CORE_STANDALONE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = StandaloneMmMmuLib
+ PI_SPECIFICATION_VERSION = 0x00010032
+
+[Sources.AARCH64]
+ Aarch64/ArmMmuStandaloneMmLib.c
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ ArmLib
+ CacheMaintenanceLib
+ MemoryAllocationLib
+
+
|