/**
Initialize controllers that must setup at the early stage
Some peripherals must be initialized in Secure World.
For example, some L2x0 requires to be initialized in Secure World
**/
RETURN_STATUS
ArmPlatformInitialize (
IN UINTN MpId
)
{
BEAGLEBOARD_REVISION Revision;
Revision = BeagleBoardGetRevision();
// Set up Pin muxing.
PadConfiguration (Revision);
// Set up system clocking
ClockInit ();
// Turn off the functional clock for Timer 3
MmioAnd32 (CM_FCLKEN_PER, 0xFFFFFFFF ^ CM_ICLKEN_PER_EN_GPT3_ENABLE );
ArmDataSynchronizationBarrier ();
// Clear IRQs
MmioWrite32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);
ArmDataSynchronizationBarrier ();
return RETURN_SUCCESS;
}
VOID
CEntryPoint (
IN VOID *MemoryBase,
IN UINTN MemorySize,
IN VOID *StackBase,
IN UINTN StackSize
)
{
VOID *HobBase;
// Build a basic HOB list
HobBase = (VOID *)(UINTN)(FixedPcdGet32(PcdEmbeddedFdBaseAddress) + FixedPcdGet32(PcdEmbeddedFdSize));
CreateHobList (MemoryBase, MemorySize, HobBase, StackBase);
//Set up Pin muxing.
PadConfiguration ();
// Set up system clocking
ClockInit ();
// Enable program flow prediction, if supported.
ArmEnableBranchPrediction ();
// Initialize CPU cache
InitCache ((UINT32)MemoryBase, (UINT32)MemorySize);
// Add memory allocation hob for relocated FD
BuildMemoryAllocationHob (FixedPcdGet32(PcdEmbeddedFdBaseAddress), FixedPcdGet32(PcdEmbeddedFdSize), EfiBootServicesData);
// Add the FVs to the hob list
BuildFvHob (PcdGet32(PcdFlashFvMainBase), PcdGet32(PcdFlashFvMainSize));
// Start talking
UartInit ();
InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, NULL, NULL);
SaveAndSetDebugTimerInterrupt (TRUE);
DEBUG ((EFI_D_ERROR, "UART Enabled\n"));
// Start up a free running timer so that the timer lib will work
TimerInit ();
// 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.
DecompressFirstFv ();
// Load the DXE Core and transfer control to it
LoadDxeCoreFromFv (NULL, 0);
// DXE Core should always load and never return
ASSERT (FALSE);
}