diff options
Diffstat (limited to 'ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c')
-rw-r--r-- | ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c new file mode 100644 index 0000000000..760bcc169c --- /dev/null +++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c @@ -0,0 +1,100 @@ +/** @file
+
+ Copyright (c) 2014-2017, Linaro 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 <Base.h>
+#include <Library/ArmLib.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
+
+EFI_PHYSICAL_ADDRESS
+ArmGetPhysAddrTop (
+ VOID
+ );
+
+/**
+ 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;
+ UINT64 TopOfMemory;
+
+ ASSERT (VirtualMemoryMap != NULL);
+
+ VirtualMemoryTable = AllocatePool (sizeof (ARM_MEMORY_REGION_DESCRIPTOR) *
+ MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
+
+ if (VirtualMemoryTable == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: Error: Failed AllocatePool()\n", __FUNCTION__));
+ return;
+ }
+
+ // System DRAM
+ VirtualMemoryTable[0].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);
+ VirtualMemoryTable[0].VirtualBase = VirtualMemoryTable[0].PhysicalBase;
+ VirtualMemoryTable[0].Length = PcdGet64 (PcdSystemMemorySize);
+ VirtualMemoryTable[0].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+
+ DEBUG ((DEBUG_INFO, "%a: Dumping System DRAM Memory Map:\n"
+ "\tPhysicalBase: 0x%lX\n"
+ "\tVirtualBase: 0x%lX\n"
+ "\tLength: 0x%lX\n",
+ __FUNCTION__,
+ VirtualMemoryTable[0].PhysicalBase,
+ VirtualMemoryTable[0].VirtualBase,
+ VirtualMemoryTable[0].Length));
+
+ // Peripheral space before DRAM
+ VirtualMemoryTable[1].PhysicalBase = 0x0;
+ VirtualMemoryTable[1].VirtualBase = 0x0;
+ VirtualMemoryTable[1].Length = VirtualMemoryTable[0].PhysicalBase;
+ VirtualMemoryTable[1].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
+ // Peripheral space after DRAM
+ TopOfMemory = MIN (1ULL << FixedPcdGet8 (PcdPrePiCpuMemorySize),
+ ArmGetPhysAddrTop ());
+ VirtualMemoryTable[2].PhysicalBase = VirtualMemoryTable[0].Length + VirtualMemoryTable[1].Length;
+ VirtualMemoryTable[2].VirtualBase = VirtualMemoryTable[2].PhysicalBase;
+ VirtualMemoryTable[2].Length = TopOfMemory -
+ VirtualMemoryTable[2].PhysicalBase;
+ VirtualMemoryTable[2].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
+ // Remap the FD region as normal executable memory
+ VirtualMemoryTable[3].PhysicalBase = PcdGet64 (PcdFdBaseAddress);
+ VirtualMemoryTable[3].VirtualBase = VirtualMemoryTable[3].PhysicalBase;
+ VirtualMemoryTable[3].Length = FixedPcdGet32 (PcdFdSize);
+ VirtualMemoryTable[3].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+
+ // End of Table
+ ZeroMem (&VirtualMemoryTable[4], sizeof (ARM_MEMORY_REGION_DESCRIPTOR));
+
+ *VirtualMemoryMap = VirtualMemoryTable;
+}
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