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/** @file
*
* Copyright (c) 2011-2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
#include <PiPei.h>
#include <Pi/PiBootMode.h>
#include <Library/PeCoffLib.h>
#include <Library/PrePiLib.h>
#include <Library/PrintLib.h>
#include <Library/PrePiHobListPointerLib.h>
#include <Library/TimerLib.h>
#include <Library/PerformanceLib.h>
#include <Library/CacheMaintenanceLib.h>
#include <Ppi/GuidedSectionExtraction.h>
#include <Ppi/ArmMpCoreInfo.h>
#include "PrePi.h"
VOID
PrePiMain (
IN UINTN UefiMemoryBase,
IN UINTN StacksBase,
IN UINT64 StartTimeStamp
)
{
EFI_HOB_HANDOFF_INFO_TABLE *HobList;
EFI_STATUS Status;
CHAR8 Buffer[100];
UINTN CharCount;
UINTN StacksSize;
// Initialize the architecture specific bits
ArchInitialize ();
// Declare the PI/UEFI memory region
HobList = HobConstructor (
(VOID *)UefiMemoryBase,
FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),
(VOID *)UefiMemoryBase,
(VOID *)StacksBase // The top of the UEFI Memory is reserved for the stacks
);
PrePeiSetHobList (HobList);
//
// Ensure that the loaded image is invalidated in the caches, so that any
// modifications we made with the caches and MMU off (such as the applied
// relocations) don't become invisible once we turn them on.
//
InvalidateDataCacheRange ((VOID *)(UINTN)PcdGet64 (PcdFdBaseAddress), PcdGet32 (PcdFdSize));
// SEC phase needs to run library constructors by hand.
ProcessLibraryConstructorList ();
// Initialize MMU and Memory HOBs (Resource Descriptor HOBs)
Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));
ASSERT_EFI_ERROR (Status);
// Initialize the Serial Port
SerialPortInitialize ();
CharCount = AsciiSPrint (
Buffer,
sizeof (Buffer),
"UEFI firmware (version %s built at %a on %a)\n\r",
(CHAR16 *)PcdGetPtr (PcdFirmwareVersionString),
__TIME__,
__DATE__
);
SerialPortWrite ((UINT8 *)Buffer, CharCount);
// Create the Stacks HOB (reserve the memory for all stacks)
StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize);
BuildStackHob (StacksBase, StacksSize);
// TODO: Call CpuPei as a library
BuildCpuHob (ArmGetPhysicalAddressBits (), PcdGet8 (PcdPrePiCpuIoSize));
// Set the Boot Mode
SetBootMode (BOOT_WITH_FULL_CONFIGURATION);
// Initialize Platform HOBs (CpuHob and FvHob)
Status = PlatformPeim ();
ASSERT_EFI_ERROR (Status);
// Now, the HOB List has been initialized, we can register performance information
PERF_START (NULL, "PEI", NULL, StartTimeStamp);
// 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, SIZE_128KB);
ASSERT_EFI_ERROR (Status);
}
VOID
CEntryPoint (
IN UINTN MpId,
IN UINTN UefiMemoryBase,
IN UINTN StacksBase
)
{
UINT64 StartTimeStamp;
if (PerformanceMeasurementEnabled ()) {
// We cannot call yet the PerformanceLib because the HOB List has not been initialized
StartTimeStamp = GetPerformanceCounter ();
} else {
StartTimeStamp = 0;
}
// Data Cache enabled on Primary core when MMU is enabled.
ArmDisableDataCache ();
// Invalidate instruction cache
ArmInvalidateInstructionCache ();
// Enable Instruction Caches on all cores.
ArmEnableInstructionCache ();
PrePiMain (UefiMemoryBase, StacksBase, StartTimeStamp);
// DXE Core should always load and never return
ASSERT (FALSE);
}
VOID
RelocatePeCoffImage (
IN EFI_PEI_FV_HANDLE FwVolHeader,
IN PE_COFF_LOADER_READ_FILE ImageRead
)
{
EFI_PEI_FILE_HANDLE FileHandle;
VOID *SectionData;
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
EFI_STATUS Status;
FileHandle = NULL;
Status = FfsFindNextFile (
EFI_FV_FILETYPE_SECURITY_CORE,
FwVolHeader,
&FileHandle
);
ASSERT_EFI_ERROR (Status);
Status = FfsFindSectionData (EFI_SECTION_PE32, FileHandle, &SectionData);
if (EFI_ERROR (Status)) {
Status = FfsFindSectionData (EFI_SECTION_TE, FileHandle, &SectionData);
}
ASSERT_EFI_ERROR (Status);
ZeroMem (&ImageContext, sizeof ImageContext);
ImageContext.Handle = (EFI_HANDLE)SectionData;
ImageContext.ImageRead = ImageRead;
PeCoffLoaderGetImageInfo (&ImageContext);
if (ImageContext.ImageAddress != (UINTN)SectionData) {
ImageContext.ImageAddress = (UINTN)SectionData;
PeCoffLoaderRelocateImage (&ImageContext);
}
}
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