964680c124
Formerly, each platform was responsible to declare the location of its UEFI memory
region (used by PEI and DXE Foundations).
The ArmPlatformLib was also declaring every region of its partitionned system memory
with a System Resource HOB.
In this new model, the MemoryInit expects the system memory to be declared with the
PCDs gArmTokenSpaceGuid.PcdSystemMemoryBase/Size.
These PCDs declare the largest continuous DRAM region. Additional regions can be
declared with the ArmPLatformLib function ArmPlatformGetAdditionalSystemMemory().
Now, it is the PEIM that partitions the system memory for every platform. It installs
a region of the size PcdSystemMemoryUefiRegionSize (default 128MB) for the PEI permanent
memory at the top of the DRAM region.
And a region of gArmPlatformTokenSpaceGuid.PcdSystemMemoryFixRegionSize (default 128MB)
is declared at the base of the system memory. This region is used for the allocation that
requires fixed address or have some constraints on their locations.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11481 6f19259b-4bc3-4df7-8a09-765794883524
125 lines
5.8 KiB
C
125 lines
5.8 KiB
C
/** @file
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*
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* Copyright (c) 2011, ARM Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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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/MemoryAllocationLib.h>
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#include <Library/IoLib.h>
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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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#define DDR_ATTRIBUTES_SECURE_CACHED ARM_MEMORY_REGION_ATTRIBUTE_SECURE_WRITE_BACK
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#define DDR_ATTRIBUTES_SECURE_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_SECURE_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 ArmPlatformGetVirtualMemoryMap(ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap) {
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UINT32 CacheAttributes;
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BOOLEAN bTrustzoneSupport = FALSE;
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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(sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * 9);
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if (VirtualMemoryTable == NULL) {
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return;
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}
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if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
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CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_CACHED : DDR_ATTRIBUTES_SECURE_CACHED);
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} else {
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CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_UNCACHED : DDR_ATTRIBUTES_SECURE_UNCACHED);
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}
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// ReMap (Either NOR Flash or DRAM)
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VirtualMemoryTable[Index].PhysicalBase = ARM_EB_REMAP_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_EB_REMAP_BASE;
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VirtualMemoryTable[Index].Length = ARM_EB_REMAP_SZ;
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VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
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// DDR
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VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_DRAM_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_EB_DRAM_BASE;
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VirtualMemoryTable[Index].Length = ARM_EB_DRAM_SZ;
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VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
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// SMC CS7
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VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE;
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VirtualMemoryTable[Index].Length = ARM_EB_SMB_MB_ON_CHIP_PERIPH_SZ;
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VirtualMemoryTable[Index].Attributes = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
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// SMB CS0-CS1 - NOR Flash 1 & 2
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VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_NOR_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_NOR_BASE;
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VirtualMemoryTable[Index].Length = ARM_EB_SMB_NOR_SZ + ARM_EB_SMB_DOC_SZ;
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VirtualMemoryTable[Index].Attributes = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
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// SMB CS2 - SRAM
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VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_SRAM_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_SRAM_BASE;
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VirtualMemoryTable[Index].Length = ARM_EB_SMB_SRAM_SZ;
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VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
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// SMB CS3-CS6 - Motherboard Peripherals
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VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_PERIPH_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_EB_SMB_PERIPH_BASE;
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VirtualMemoryTable[Index].Length = ARM_EB_SMB_PERIPH_SZ;
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VirtualMemoryTable[Index].Attributes = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
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// If a Logic Tile is connected to The ARM Versatile Express Motherboard
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if (MmioRead32(ARM_EB_SYS_PROCID1_REG) != 0) {
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VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_LOGIC_TILE_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_EB_LOGIC_TILE_BASE;
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VirtualMemoryTable[Index].Length = ARM_EB_LOGIC_TILE_SZ;
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VirtualMemoryTable[Index].Attributes = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
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}
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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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/**
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Return the EFI Memory Map of your platform
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This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
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Descriptor HOBs used by DXE core.
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@param[out] EfiMemoryMap Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
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EFI Memory region. This array must be ended by a zero-filled entry
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**/
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EFI_STATUS
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ArmPlatformGetAdditionalSystemMemory (
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OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
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) {
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return EFI_UNSUPPORTED;
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}
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