1 files changed, 88 insertions, 0 deletions
diff --git a/roms/edk2/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c b/roms/edk2/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
new file mode 100644
index 000000000..7ae837b18
--- /dev/null
+++ b/roms/edk2/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
@@ -0,0 +1,88 @@
+/** @file
+
+  Copyright (c) 2014-2017, Linaro Limited. All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#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
+
+//
+// mach-virt's core peripherals such as the UART, the GIC and the RTC are
+// all mapped in the 'miscellaneous device I/O' region, which we just map
+// in its entirety rather than device by device. Note that it does not
+// cover any of the NOR flash banks or PCI resource windows.
+//
+#define MACH_VIRT_PERIPH_BASE       0x08000000
+#define MACH_VIRT_PERIPH_SIZE       SIZE_128MB
+
+/**
+  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;
+
+  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));
+
+  // Memory mapped peripherals (UART, RTC, GIC, virtio-mmio, etc)
+  VirtualMemoryTable[1].PhysicalBase = MACH_VIRT_PERIPH_BASE;
+  VirtualMemoryTable[1].VirtualBase  = MACH_VIRT_PERIPH_BASE;
+  VirtualMemoryTable[1].Length       = MACH_VIRT_PERIPH_SIZE;
+  VirtualMemoryTable[1].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
+  // Map the FV region as normal executable memory
+  VirtualMemoryTable[2].PhysicalBase = PcdGet64 (PcdFvBaseAddress);
+  VirtualMemoryTable[2].VirtualBase  = VirtualMemoryTable[2].PhysicalBase;
+  VirtualMemoryTable[2].Length       = FixedPcdGet32 (PcdFvSize);
+  VirtualMemoryTable[2].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+
+  // End of Table
+  ZeroMem (&VirtualMemoryTable[3], sizeof (ARM_MEMORY_REGION_DESCRIPTOR));
+
+  *VirtualMemoryMap = VirtualMemoryTable;
+}