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/** @file
*
* Copyright (c) 2013-2014, 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/HobLib.h>
#include <Library/PcdLib.h>
#include <Library/IoLib.h>
#include <Library/MemoryAllocationLib.h>
#include <ArmPlatform.h>
// The total number of descriptors, including the final "end-of-table" descriptor.
#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 12
// 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
)
{
ARM_MEMORY_REGION_ATTRIBUTES CacheAttributes;
UINTN Index = 0;
ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
ASSERT (VirtualMemoryMap != NULL);
//
// Declared the additional 6GB of memory
//
ResourceAttributes =
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_TESTED;
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
ARM_JUNO_EXTRA_SYSTEM_MEMORY_BASE,
ARM_JUNO_EXTRA_SYSTEM_MEMORY_SZ);
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;
}
// SMB CS0 - NOR0 Flash
VirtualMemoryTable[Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE;
VirtualMemoryTable[Index].VirtualBase = ARM_VE_SMB_NOR0_BASE;
VirtualMemoryTable[Index].Length = SIZE_256KB * 255;
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
// Environment Variables region
VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE + (SIZE_256KB * 255);
VirtualMemoryTable[Index].VirtualBase = ARM_VE_SMB_NOR0_BASE + (SIZE_256KB * 255);
VirtualMemoryTable[Index].Length = SIZE_64KB * 4;
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
// SMB CS2 & CS3 - Off-chip (motherboard) peripherals
VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
VirtualMemoryTable[Index].VirtualBase = ARM_VE_SMB_PERIPH_BASE;
VirtualMemoryTable[Index].Length = ARM_VE_SMB_PERIPH_SZ;
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
// Juno OnChip non-secure ROM
VirtualMemoryTable[++Index].PhysicalBase = ARM_JUNO_NON_SECURE_ROM_BASE;
VirtualMemoryTable[Index].VirtualBase = ARM_JUNO_NON_SECURE_ROM_BASE;
VirtualMemoryTable[Index].Length = ARM_JUNO_NON_SECURE_ROM_SZ;
VirtualMemoryTable[Index].Attributes = CacheAttributes;
// Juno OnChip peripherals
VirtualMemoryTable[++Index].PhysicalBase = ARM_JUNO_PERIPHERALS_BASE;
VirtualMemoryTable[Index].VirtualBase = ARM_JUNO_PERIPHERALS_BASE;
VirtualMemoryTable[Index].Length = ARM_JUNO_PERIPHERALS_SZ;
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
// Juno OnChip non-secure SRAM
VirtualMemoryTable[++Index].PhysicalBase = ARM_JUNO_NON_SECURE_SRAM_BASE;
VirtualMemoryTable[Index].VirtualBase = ARM_JUNO_NON_SECURE_SRAM_BASE;
VirtualMemoryTable[Index].Length = ARM_JUNO_NON_SECURE_SRAM_SZ;
VirtualMemoryTable[Index].Attributes = CacheAttributes;
// Juno SOC peripherals
VirtualMemoryTable[++Index].PhysicalBase = ARM_JUNO_SOC_PERIPHERALS_BASE;
VirtualMemoryTable[Index].VirtualBase = ARM_JUNO_SOC_PERIPHERALS_BASE;
VirtualMemoryTable[Index].Length = ARM_JUNO_SOC_PERIPHERALS_SZ;
VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
// DDR - 2GB
VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);
VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdSystemMemoryBase);
VirtualMemoryTable[Index].Length = PcdGet64 (PcdSystemMemorySize);
VirtualMemoryTable[Index].Attributes = CacheAttributes;
// DDR - 6GB
VirtualMemoryTable[++Index].PhysicalBase = ARM_JUNO_EXTRA_SYSTEM_MEMORY_BASE;
VirtualMemoryTable[Index].VirtualBase = ARM_JUNO_EXTRA_SYSTEM_MEMORY_BASE;
VirtualMemoryTable[Index].Length = ARM_JUNO_EXTRA_SYSTEM_MEMORY_SZ;
VirtualMemoryTable[Index].Attributes = CacheAttributes;
// End of Table
VirtualMemoryTable[++Index].PhysicalBase = 0;
VirtualMemoryTable[Index].VirtualBase = 0;
VirtualMemoryTable[Index].Length = 0;
VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0;
ASSERT((Index + 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
*VirtualMemoryMap = VirtualMemoryTable;
}
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