/** @file
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*
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* Copyright (c) 2011-2014, ARM Limited. All rights reserved.<BR>
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* Copyright (c) 2014 - 2016, AMD Inc. All rights reserved.<BR>
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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/**
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Derived from:
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ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
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**/
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#include <Library/ArmPlatformLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PcdLib.h>
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#include <Library/IoLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/HobLib.h>
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#if !defined(MDEPKG_NDEBUG)
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static const char *tblAttrDesc[] =
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{
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"UNCACHED_UNBUFFERED ",
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"NONSECURE_UNCACHED_UNBUFFERED",
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"WRITE_BACK ",
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"NONSECURE_WRITE_BACK ",
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"WRITE_THROUGH ",
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"NONSECURE_WRITE_THROUGH ",
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"DEVICE ",
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"NONSECURE_DEVICE "
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};
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#endif
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#define LOG_MEM(desc) DEBUG ((EFI_D_ERROR, desc, VirtualMemoryTable[Index].PhysicalBase, \
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( VirtualMemoryTable[Index].PhysicalBase+VirtualMemoryTable[Index].Length - 1), \
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VirtualMemoryTable[Index].Length, tblAttrDesc[VirtualMemoryTable[Index].Attributes]));
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// Number of Virtual Memory Map Descriptors
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#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 16
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// DDR attributes
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#define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
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#define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
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/**
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Return the Virtual Memory Map of your platform
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This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
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@param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
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Virtual Memory mapping. This array must be ended by a zero-filled
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entry
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**/
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VOID
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ArmPlatformGetVirtualMemoryMap (
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IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
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)
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{
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ARM_MEMORY_REGION_ATTRIBUTES CacheAttributes;
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UINTN Index = 0;
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ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
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ASSERT(VirtualMemoryMap != NULL);
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VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
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if (VirtualMemoryTable == NULL) {
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return;
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}
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CacheAttributes = DDR_ATTRIBUTES_CACHED;
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DEBUG ((EFI_D_ERROR, " Memory Map\n------------------------------------------------------------------------\n"));
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DEBUG ((EFI_D_ERROR, "Description : START - END [ SIZE ] { ATTR }\n"));
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// 0xE000_0000 - 0xEFFF_FFFF: Mapped I/O space
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VirtualMemoryTable[Index].PhysicalBase = 0xE0000000UL;
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VirtualMemoryTable[Index].VirtualBase = 0xE0000000UL;
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VirtualMemoryTable[Index].Length = SIZE_256MB;
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VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
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LOG_MEM ("I/O Space [Platform MMIO] : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
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// 0xF000_0000 - 0xFFFF_FFFF: PCI config space
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VirtualMemoryTable[++Index].PhysicalBase = 0xF0000000UL;
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VirtualMemoryTable[Index].VirtualBase = 0xF0000000UL;
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VirtualMemoryTable[Index].Length = SIZE_256MB;
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VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
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LOG_MEM ("I/O Space [PCI config space] : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
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// DRAM
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VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);
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VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdSystemMemoryBase);
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VirtualMemoryTable[Index].Length = PcdGet64 (PcdSystemMemorySize);
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VirtualMemoryTable[Index].Attributes = CacheAttributes;
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LOG_MEM ("DRAM : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
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// End of Table
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VirtualMemoryTable[++Index].PhysicalBase = 0;
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VirtualMemoryTable[Index].VirtualBase = 0;
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VirtualMemoryTable[Index].Length = 0;
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VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0;
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*VirtualMemoryMap = VirtualMemoryTable;
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}
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