/** @file | |
* | |
* Copyright (c) 2011, 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 <Library/ArmPlatformLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/PcdLib.h> | |
#include <Library/MemoryAllocationLib.h> | |
#include <Library/IoLib.h> | |
#include <ArmPlatform.h> | |
#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 6 | |
// DDR attributes | |
#define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK | |
#define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED | |
/** | |
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 | |
**/ | |
VOID | |
ArmPlatformGetVirtualMemoryMap ( | |
IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap | |
) | |
{ | |
UINT32 CacheAttributes; | |
UINTN Index = 0; | |
ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable; | |
ASSERT(VirtualMemoryMap != NULL); | |
VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages (EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS)); | |
if (VirtualMemoryTable == NULL) { | |
return; | |
} | |
if (FeaturePcdGet(PcdCacheEnable) == TRUE) { | |
CacheAttributes = DDR_ATTRIBUTES_CACHED; | |
} else { | |
CacheAttributes = DDR_ATTRIBUTES_UNCACHED; | |
} | |
// ReMap (Either NOR Flash or DRAM) | |
VirtualMemoryTable[Index].PhysicalBase = ARM_EB_REMAP_BASE; | |
VirtualMemoryTable[Index].VirtualBase = ARM_EB_REMAP_BASE; | |
VirtualMemoryTable[Index].Length = ARM_EB_REMAP_SZ; | |
VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes; | |
// DDR | |
VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdSystemMemoryBase); | |
VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdSystemMemoryBase); | |
VirtualMemoryTable[Index].Length = PcdGet64 (PcdSystemMemorySize); | |
VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes; | |
// SMC CS7 | |
VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE; | |
VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE; | |
VirtualMemoryTable[Index].Length = ARM_EB_SMB_MB_ON_CHIP_PERIPH_SZ; | |
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE; | |
// SMB CS0-CS1 - NOR Flash 1 & 2 | |
VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_NOR_BASE; | |
VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_NOR_BASE; | |
VirtualMemoryTable[Index].Length = ARM_EB_SMB_NOR_SZ + ARM_EB_SMB_DOC_SZ; | |
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE; | |
// SMB CS2 - SRAM | |
VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_SRAM_BASE; | |
VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_SRAM_BASE; | |
VirtualMemoryTable[Index].Length = ARM_EB_SMB_SRAM_SZ; | |
VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes; | |
// SMB CS3-CS6 - Motherboard Peripherals | |
VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_PERIPH_BASE; | |
VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_PERIPH_BASE; | |
VirtualMemoryTable[Index].Length = ARM_EB_SMB_PERIPH_SZ; | |
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE; | |
// If a Logic Tile is connected to The ARM Versatile Express Motherboard | |
if (MmioRead32(ARM_EB_SYS_PROCID1_REG) != 0) { | |
VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_LOGIC_TILE_BASE; | |
VirtualMemoryTable[Index].VirtualBase = ARM_EB_LOGIC_TILE_BASE; | |
VirtualMemoryTable[Index].Length = ARM_EB_LOGIC_TILE_SZ; | |
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE; | |
ASSERT((Index + 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + 1)); | |
} else { | |
ASSERT((Index + 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS); | |
} | |
// End of Table | |
VirtualMemoryTable[++Index].PhysicalBase = 0; | |
VirtualMemoryTable[Index].VirtualBase = 0; | |
VirtualMemoryTable[Index].Length = 0; | |
VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0; | |
*VirtualMemoryMap = VirtualMemoryTable; | |
} |