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/** @file
* Main file supporting the transition to PEI Core in Normal World for Versatile Express
*
* 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/BaseLib.h>
#include <Library/DebugAgentLib.h>
#include <Library/PrintLib.h>
#include <Library/ArmLib.h>
#include <Library/SerialPortLib.h>
#include <Ppi/ArmGlobalVariable.h>
#include <Chipset/ArmV7.h>
#include "PrePeiCore.h"
EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI mTemporaryRamSupportPpi = { PrePeiCoreTemporaryRamSupport };
ARM_GLOBAL_VARIABLE_PPI mGlobalVariablePpi = { PrePeiCoreGetGlobalVariableMemory };
EFI_PEI_PPI_DESCRIPTOR gCommonPpiTable[] = {
{
EFI_PEI_PPI_DESCRIPTOR_PPI,
&gEfiTemporaryRamSupportPpiGuid,
&mTemporaryRamSupportPpi
},
{
EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
&gArmGlobalVariablePpiGuid,
&mGlobalVariablePpi
}
};
VOID
CEntryPoint (
IN UINTN MpId,
IN EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint
)
{
//Clean Data cache
ArmCleanInvalidateDataCache();
//Invalidate instruction cache
ArmInvalidateInstructionCache();
// Enable Instruction & Data caches
ArmEnableDataCache ();
ArmEnableInstructionCache ();
//
// Note: Doesn't have to Enable CPU interface in non-secure world,
// as Non-secure interface is already enabled in Secure world.
//
// Write VBAR - The Vector table must be 32-byte aligned
ASSERT(((UINT32)PeiVectorTable & ((1 << 5)-1)) == 0);
ArmWriteVBar((UINT32)PeiVectorTable);
//Note: The MMU will be enabled by MemoryPeim. Only the primary core will have the MMU on.
//If not primary Jump to Secondary Main
if (IS_PRIMARY_CORE(MpId)) {
// Initialize the Debug Agent for Source Level Debugging
InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);
SaveAndSetDebugTimerInterrupt (TRUE);
// Goto primary Main.
PrimaryMain (PeiCoreEntryPoint);
} else {
SecondaryMain (MpId);
}
// PEI Core should always load and never return
ASSERT (FALSE);
}
EFI_STATUS
EFIAPI
PrePeiCoreTemporaryRamSupport (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
)
{
VOID *OldHeap;
VOID *NewHeap;
VOID *OldStack;
VOID *NewStack;
OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;
NewHeap = (VOID*)((UINTN)PermanentMemoryBase + (CopySize >> 1));
OldStack = (VOID*)((UINTN)TemporaryMemoryBase + (CopySize >> 1));
NewStack = (VOID*)(UINTN)PermanentMemoryBase;
//
// Migrate the temporary memory stack to permanent memory stack.
//
CopyMem (NewStack, OldStack, CopySize >> 1);
//
// Migrate the temporary memory heap to permanent memory heap.
//
CopyMem (NewHeap, OldHeap, CopySize >> 1);
SecSwitchStack ((UINTN)NewStack - (UINTN)OldStack);
return EFI_SUCCESS;
}
EFI_STATUS
PrePeiCoreGetGlobalVariableMemory (
OUT EFI_PHYSICAL_ADDRESS *GlobalVariableBase
)
{
ASSERT (GlobalVariableBase != NULL);
*GlobalVariableBase = (UINTN)PcdGet32 (PcdCPUCoresStackBase) +
(UINTN)PcdGet32 (PcdCPUCorePrimaryStackSize) -
(UINTN)PcdGet32 (PcdPeiGlobalVariableSize);
return EFI_SUCCESS;
}
VOID
PeiCommonExceptionEntry (
IN UINT32 Entry,
IN UINT32 LR
)
{
CHAR8 Buffer[100];
UINTN CharCount;
switch (Entry) {
case 0:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Reset Exception at 0x%X\n\r",LR);
break;
case 1:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Undefined Exception at 0x%X\n\r",LR);
break;
case 2:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"SWI Exception at 0x%X\n\r",LR);
break;
case 3:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"PrefetchAbort Exception at 0x%X\n\r",LR);
break;
case 4:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"DataAbort Exception at 0x%X\n\r",LR);
break;
case 5:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Reserved Exception at 0x%X\n\r",LR);
break;
case 6:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"IRQ Exception at 0x%X\n\r",LR);
break;
case 7:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"FIQ Exception at 0x%X\n\r",LR);
break;
default:
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Unknown Exception at 0x%X\n\r",LR);
break;
}
SerialPortWrite ((UINT8 *) Buffer, CharCount);
while(1);
}
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