mirror of https://github.com/acidanthera/audk.git
106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
/** @file
|
|
*
|
|
* Copyright (c) 2011-2012, 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 <Uefi.h>
|
|
#include <Library/ArmPlatformGlobalVariableLib.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/PcdLib.h>
|
|
#include <Library/DebugLib.h>
|
|
|
|
#define IS_XIP() (((UINT32)PcdGet64 (PcdFdBaseAddress) > (UINT32)(PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize))) || \
|
|
((PcdGet64 (PcdFdBaseAddress) + PcdGet32 (PcdFdSize)) < PcdGet64 (PcdSystemMemoryBase)))
|
|
|
|
// Declared by ArmPlatformPkg/PrePi Module
|
|
extern UINTN mGlobalVariableBase;
|
|
|
|
VOID
|
|
ArmPlatformGetGlobalVariable (
|
|
IN UINTN VariableOffset,
|
|
IN UINTN VariableSize,
|
|
OUT VOID* Variable
|
|
)
|
|
{
|
|
UINTN GlobalVariableBase;
|
|
|
|
// Ensure the Global Variable Size have been initialized
|
|
ASSERT (VariableOffset < PcdGet32 (PcdPeiGlobalVariableSize));
|
|
|
|
if (IS_XIP()) {
|
|
// In Case of XIP, we expect the Primary Stack at the top of the System Memory
|
|
// The size must be 64bit aligned to allow 64bit variable to be aligned
|
|
GlobalVariableBase = PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize) - ALIGN_VALUE(PcdGet32 (PcdPeiGlobalVariableSize),0x8);
|
|
} else {
|
|
GlobalVariableBase = mGlobalVariableBase;
|
|
}
|
|
|
|
if (VariableSize == 4) {
|
|
*(UINT32*)Variable = ReadUnaligned32 ((CONST UINT32*)(GlobalVariableBase + VariableOffset));
|
|
} else if (VariableSize == 8) {
|
|
*(UINT64*)Variable = ReadUnaligned64 ((CONST UINT64*)(GlobalVariableBase + VariableOffset));
|
|
} else {
|
|
CopyMem (Variable, (VOID*)(GlobalVariableBase + VariableOffset), VariableSize);
|
|
}
|
|
}
|
|
|
|
VOID
|
|
ArmPlatformSetGlobalVariable (
|
|
IN UINTN VariableOffset,
|
|
IN UINTN VariableSize,
|
|
OUT VOID* Variable
|
|
)
|
|
{
|
|
UINTN GlobalVariableBase;
|
|
|
|
// Ensure the Global Variable Size have been initialized
|
|
ASSERT (VariableOffset < PcdGet32 (PcdPeiGlobalVariableSize));
|
|
|
|
if (IS_XIP()) {
|
|
// In Case of XIP, we expect the Primary Stack at the top of the System Memory
|
|
// The size must be 64bit aligned to allow 64bit variable to be aligned
|
|
GlobalVariableBase = PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize) - ALIGN_VALUE(PcdGet32 (PcdPeiGlobalVariableSize),0x8);
|
|
} else {
|
|
GlobalVariableBase = mGlobalVariableBase;
|
|
}
|
|
|
|
if (VariableSize == 4) {
|
|
WriteUnaligned32 ((UINT32*)(GlobalVariableBase + VariableOffset), *(UINT32*)Variable);
|
|
} else if (VariableSize == 8) {
|
|
WriteUnaligned64 ((UINT64*)(GlobalVariableBase + VariableOffset), *(UINT64*)Variable);
|
|
} else {
|
|
CopyMem ((VOID*)(GlobalVariableBase + VariableOffset), Variable, VariableSize);
|
|
}
|
|
}
|
|
|
|
VOID*
|
|
ArmPlatformGetGlobalVariableAddress (
|
|
IN UINTN VariableOffset
|
|
)
|
|
{
|
|
UINTN GlobalVariableBase;
|
|
|
|
// Ensure the Global Variable Size have been initialized
|
|
ASSERT (VariableOffset < PcdGet32 (PcdPeiGlobalVariableSize));
|
|
|
|
if (IS_XIP()) {
|
|
// In Case of XIP, we expect the Primary Stack at the top of the System Memory
|
|
// The size must be 64bit aligned to allow 64bit variable to be aligned
|
|
GlobalVariableBase = PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize) - ALIGN_VALUE(PcdGet32 (PcdPeiGlobalVariableSize),0x8);
|
|
} else {
|
|
GlobalVariableBase = mGlobalVariableBase;
|
|
}
|
|
|
|
return (VOID*)(GlobalVariableBase + VariableOffset);
|
|
}
|