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/** @file
*
* 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 <PiPei.h>
#include <Library/DebugAgentLib.h>
#include <Library/PrePiLib.h>
#include <Library/IoLib.h>
#include <Library/PrintLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Library/TimerLib.h>
#include <Library/PerformanceLib.h>
#include <Ppi/GuidedSectionExtraction.h>
#include <Guid/LzmaDecompress.h>
#include "PrePi.h"
#include "LzmaDecompress.h"
VOID
PrePiCommonExceptionEntry (
IN UINT32 Entry,
IN UINT32 LR
);
EFI_STATUS
EFIAPI
ExtractGuidedSectionLibConstructor (
VOID
);
EFI_STATUS
EFIAPI
LzmaDecompressLibConstructor (
VOID
);
VOID
PrePiMain (
IN UINTN UefiMemoryBase,
IN UINTN StackBase,
IN UINT64 StartTimeStamp
)
{
EFI_HOB_HANDOFF_INFO_TABLE** PrePiHobBase;
EFI_STATUS Status;
CHAR8 Buffer[100];
UINTN CharCount;
// Enable program flow prediction, if supported.
ArmEnableBranchPrediction ();
if (FixedPcdGet32(PcdVFPEnabled)) {
ArmEnableVFP();
}
// Initialize the Serial Port
SerialPortInitialize ();
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"UEFI firmware built at %a on %a\n\r",__TIME__, __DATE__);
SerialPortWrite ((UINT8 *) Buffer, CharCount);
// Initialize the Debug Agent for Source Level Debugging
InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);
SaveAndSetDebugTimerInterrupt (TRUE);
PrePiHobBase = (EFI_HOB_HANDOFF_INFO_TABLE**)(PcdGet32 (PcdCPUCoresNonSecStackBase) + (PcdGet32 (PcdCPUCoresNonSecStackSize) / 2) - PcdGet32 (PcdHobListPtrGlobalOffset));
// We leave UINT32 at the top of UEFI memory for PcdPrePiHobBase
*PrePiHobBase = HobConstructor (
(VOID*)UefiMemoryBase,
FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),
(VOID*)UefiMemoryBase,
(VOID*)(UefiMemoryBase + FixedPcdGet32 (PcdSystemMemoryUefiRegionSize) - sizeof(UINT32)));
// Initialize MMU and Memory HOBs (Resource Descriptor HOBs)
Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));
ASSERT_EFI_ERROR (Status);
// Create the Stack HOB
BuildStackHob (StackBase, FixedPcdGet32(PcdCPUCoresNonSecStackSize));
// Set the Boot Mode
SetBootMode (ArmPlatformGetBootMode ());
// Initialize Platform HOBs (CpuHob and FvHob)
Status = PlatformPeim ();
ASSERT_EFI_ERROR (Status);
BuildMemoryTypeInformationHob ();
//InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, NULL, NULL);
//SaveAndSetDebugTimerInterrupt (TRUE);
// Now, the HOB List has been initialized, we can register performance information
PERF_START (NULL, "PEI", NULL, StartTimeStamp);
// SEC phase needs to run library constructors by hand.
ExtractGuidedSectionLibConstructor ();
LzmaDecompressLibConstructor ();
// Build HOBs to pass up our version of stuff the DXE Core needs to save space
BuildPeCoffLoaderHob ();
BuildExtractSectionHob (
&gLzmaCustomDecompressGuid,
LzmaGuidedSectionGetInfo,
LzmaGuidedSectionExtraction
);
// Assume the FV that contains the SEC (our code) also contains a compressed FV.
Status = DecompressFirstFv ();
ASSERT_EFI_ERROR (Status);
// Load the DXE Core and transfer control to it
Status = LoadDxeCoreFromFv (NULL, 0);
ASSERT_EFI_ERROR (Status);
}
VOID
CEntryPoint (
IN UINTN CoreId,
IN UINTN UefiMemoryBase,
IN UINTN StackBase
)
{
UINT64 StartTimeStamp;
if ((CoreId == 0) && PerformanceMeasurementEnabled ()) {
// Initialize the Timer Library to setup the Timer HW controller
TimerConstructor ();
// We cannot call yet the PerformanceLib because the HOB List has not been initialized
StartTimeStamp = GetPerformanceCounter ();
}
//Clean Data cache
ArmCleanInvalidateDataCache();
//Invalidate instruction cache
ArmInvalidateInstructionCache();
//TODO:Drain Write Buffer
// Enable Instruction & Data caches
ArmEnableDataCache();
ArmEnableInstructionCache();
// Write VBAR - The Vector table must be 32-byte aligned
ASSERT(((UINT32)PrePiVectorTable & ((1 << 5)-1)) == 0);
ArmWriteVBar((UINT32)PrePiVectorTable);
//If not primary Jump to Secondary Main
if(0 == CoreId) {
// Goto primary Main.
PrimaryMain (UefiMemoryBase, StackBase, StartTimeStamp);
} else {
SecondaryMain (CoreId);
}
// DXE Core should always load and never return
ASSERT (FALSE);
}
VOID
PrePiCommonExceptionEntry (
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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