diff options
| -rw-r--r-- | ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.c | 98 | ||||
| -rw-r--r-- | ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.inf | 42 |
2 files changed, 140 insertions, 0 deletions
diff --git a/ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.c b/ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.c new file mode 100644 index 0000000000..63bb81ef91 --- /dev/null +++ b/ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.c @@ -0,0 +1,98 @@ +/** @file
+ Kvmtool virtual memory map library.
+
+ Copyright (c) 2018 - 2020, ARM Limited. All rights reserved.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Library/ArmLib.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+// Number of Virtual Memory Map Descriptors
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 5
+
+/**
+ Return the Virtual Memory Map of your platform
+
+ This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU
+ on your platform.
+
+ @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR
+ describing a Physical-to-Virtual Memory
+ mapping. This array must be ended by a
+ zero-filled entry. The allocated memory
+ will not be freed.
+
+**/
+VOID
+ArmVirtGetMemoryMap (
+ OUT ARM_MEMORY_REGION_DESCRIPTOR **VirtualMemoryMap
+ )
+{
+ ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
+ UINTN Idx;
+ EFI_PHYSICAL_ADDRESS TopOfAddressSpace;
+
+ ASSERT (VirtualMemoryMap != NULL);
+
+ TopOfAddressSpace = LShiftU64 (1ULL, ArmGetPhysicalAddressBits ());
+
+ VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)
+ AllocatePages (
+ EFI_SIZE_TO_PAGES (
+ sizeof (ARM_MEMORY_REGION_DESCRIPTOR) *
+ MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
+ )
+ );
+ if (VirtualMemoryTable == NULL) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "%a: Error: Failed to Allocate Pages\n",
+ __FUNCTION__
+ ));
+ return;
+ }
+
+ Idx = 0;
+ // System DRAM
+ VirtualMemoryTable[Idx].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);
+ VirtualMemoryTable[Idx].VirtualBase = VirtualMemoryTable[Idx].PhysicalBase;
+ VirtualMemoryTable[Idx].Length = PcdGet64 (PcdSystemMemorySize);
+ VirtualMemoryTable[Idx].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+
+ // Peripheral space before DRAM
+ VirtualMemoryTable[++Idx].PhysicalBase = 0x0;
+ VirtualMemoryTable[Idx].VirtualBase = 0x0;
+ VirtualMemoryTable[Idx].Length = PcdGet64 (PcdSystemMemoryBase);
+ VirtualMemoryTable[Idx].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
+ // Peripheral space after DRAM
+ VirtualMemoryTable[++Idx].PhysicalBase = PcdGet64 (PcdSystemMemoryBase) +
+ PcdGet64 (PcdSystemMemorySize);
+ VirtualMemoryTable[Idx].VirtualBase = VirtualMemoryTable[Idx].PhysicalBase;
+ VirtualMemoryTable[Idx].Length = TopOfAddressSpace -
+ VirtualMemoryTable[Idx].PhysicalBase;
+ VirtualMemoryTable[Idx].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
+ // Map the FV region as normal executable memory
+ VirtualMemoryTable[++Idx].PhysicalBase = PcdGet64 (PcdFvBaseAddress);
+ VirtualMemoryTable[Idx].VirtualBase = VirtualMemoryTable[Idx].PhysicalBase;
+ VirtualMemoryTable[Idx].Length = FixedPcdGet32 (PcdFvSize);
+ VirtualMemoryTable[Idx].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+
+ // End of Table
+ VirtualMemoryTable[++Idx].PhysicalBase = 0;
+ VirtualMemoryTable[Idx].VirtualBase = 0;
+ VirtualMemoryTable[Idx].Length = 0;
+ VirtualMemoryTable[Idx].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0;
+
+ ASSERT((Idx + 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
+
+ *VirtualMemoryMap = VirtualMemoryTable;
+}
diff --git a/ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.inf b/ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.inf new file mode 100644 index 0000000000..a354e734ab --- /dev/null +++ b/ArmVirtPkg/Library/KvmtoolVirtMemInfoLib/KvmtoolVirtMemInfoLib.inf @@ -0,0 +1,42 @@ +## @file
+# Kvmtool virtual memory map library.
+#
+# Copyright (c) 2018, ARM Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x0001001B
+ BASE_NAME = KvmtoolVirtMemInfoLib
+ FILE_GUID = B752E953-394F-462C-811C-F8BE35C8C071
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = ArmVirtMemInfoLib
+
+[Sources]
+ KvmtoolVirtMemInfoLib.c
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ ArmVirtPkg/ArmVirtPkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ ArmLib
+ BaseLib
+ BaseMemoryLib
+ DebugLib
+ MemoryAllocationLib
+ PcdLib
+
+[Pcd]
+ gArmTokenSpaceGuid.PcdFvBaseAddress
+ gArmTokenSpaceGuid.PcdSystemMemoryBase
+ gArmTokenSpaceGuid.PcdSystemMemorySize
+
+[FixedPcd]
+ gArmTokenSpaceGuid.PcdFvSize
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