mirror of https://github.com/acidanthera/audk.git
136 lines
6.2 KiB
C
136 lines
6.2 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/IoLib.h>
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#include <Library/MemoryAllocationLib.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 val32;
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UINT32 CacheAttributes;
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BOOLEAN bTrustzoneSupport;
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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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// Check if SMC TZASC is enabled. If Trustzone not enabled then all the entries remain in Secure World.
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// As this value can be changed in the Board Configuration file, the UEFI firmware needs to work for both case
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val32 = MmioRead32(ARM_VE_SYS_CFGRW1_REG);
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if (ARM_VE_CFGRW1_TZASC_EN_BIT_MASK & val32) {
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bTrustzoneSupport = TRUE;
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} else {
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bTrustzoneSupport = FALSE;
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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_VE_REMAP_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_VE_REMAP_BASE;
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VirtualMemoryTable[Index].Length = ARM_VE_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_VE_DRAM_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_VE_DRAM_BASE;
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VirtualMemoryTable[Index].Length = ARM_VE_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_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
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VirtualMemoryTable[Index].Length = ARM_VE_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_VE_SMB_NOR0_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_VE_SMB_NOR0_BASE;
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VirtualMemoryTable[Index].Length = ARM_VE_SMB_NOR0_SZ + ARM_VE_SMB_NOR1_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_VE_SMB_SRAM_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_VE_SMB_SRAM_BASE;
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VirtualMemoryTable[Index].Length = ARM_VE_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_VE_SMB_PERIPH_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_VE_SMB_PERIPH_BASE;
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VirtualMemoryTable[Index].Length = ARM_VE_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_VE_SYS_PROCID1_REG) != 0) {
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VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_EXT_AXI_BASE;
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VirtualMemoryTable[Index].VirtualBase = ARM_VE_EXT_AXI_BASE;
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VirtualMemoryTable[Index].Length = ARM_VE_EXT_AXI_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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{
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return EFI_UNSUPPORTED;
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}
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