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/** @file
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
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/PeiServicesLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/FspSwitchStackLib.h>
#include <Library/FspCommonLib.h>
#include <Guid/EventGroup.h>
#include <FspApi.h>
#include <Protocol/PciEnumerationComplete.h>
EFI_PEI_PPI_DESCRIPTOR mPeiPostPciEnumerationPpi = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiPciEnumerationCompleteProtocolGuid,
NULL
};
EFI_PEI_PPI_DESCRIPTOR mPeiReadyToBootPpi = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiEventReadyToBootGuid,
NULL
};
UINT32 mFspNotifySequence[] = {
EnumInitPhaseAfterPciEnumeration,
EnumInitPhaseReadyToBoot
};
/**
Install FSP notification.
@param[in] NotificationCode FSP notification code
@retval EFI_SUCCESS Notify FSP successfully
@retval EFI_INVALID_PARAMETER NotificationCode is invalid
**/
EFI_STATUS
EFIAPI
FspNotificationHandler (
IN UINT32 NotificationCode
)
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
switch (NotificationCode) {
case EnumInitPhaseAfterPciEnumeration:
//
// Do POST PCI initialization if needed
//
DEBUG ((DEBUG_INFO | DEBUG_INIT, "FSP Post PCI Enumeration ...\n"));
PeiServicesInstallPpi (&mPeiPostPciEnumerationPpi);
break;
case EnumInitPhaseReadyToBoot:
//
// Ready To Boot
//
DEBUG ((DEBUG_INFO| DEBUG_INIT, "FSP Ready To Boot ...\n"));
PeiServicesInstallPpi (&mPeiReadyToBootPpi);
break;
default:
Status = EFI_INVALID_PARAMETER;
break;
}
return Status;
}
/**
This function transfer control to the ContinuationFunc passed in by the
bootloader.
**/
VOID
EFIAPI
FspInitDone (
VOID
)
{
FSP_INIT_PARAMS *FspInitParams;
FspInitParams = (FSP_INIT_PARAMS *)GetFspApiParameter ();
//
// Modify the parameters for ContinuationFunc
//
SetFspContinuationFuncParameter(EFI_SUCCESS, 0);
SetFspContinuationFuncParameter((UINT32)GetHobList(), 1);
//
// Modify the return address to ContinuationFunc
//
SetFspApiReturnAddress((UINT32)FspInitParams->ContinuationFunc);
//
// Give control back to the boot loader framework caller after FspInit is done
// It is done throught the continuation function
//
SetFspMeasurePoint (FSP_PERF_ID_API_FSPINIT_EXIT);
Pei2LoaderSwitchStack();
}
/**
This function handle NotifyPhase API call from the bootloader.
It gives control back to the bootloader after it is handled. If the
Notification code is a ReadyToBoot event, this function will return
and FSP continues the remaining execution until it reaches the DxeIpl.
**/
VOID
FspWaitForNotify (
VOID
)
{
EFI_STATUS Status;
UINT32 NotificationValue;
UINT32 NotificationCount;
UINT8 Count;
NotificationCount = 0;
while (NotificationCount < sizeof(mFspNotifySequence) / sizeof(UINT32)) {
Count = (UINT8)((NotificationCount << 1) & 0x07);
SetFspMeasurePoint (FSP_PERF_ID_API_NOTIFY_POSTPCI_ENTRY + Count);
NotificationValue = ((NOTIFY_PHASE_PARAMS *)(UINTN)GetFspApiParameter ())->Phase;
DEBUG ((DEBUG_INFO, "FSP Got Notification. Notification Value : 0x%08X\n", NotificationValue));
if (mFspNotifySequence[NotificationCount] != NotificationValue) {
//
// Notify code does not follow the predefined order
//
SetFspApiReturnStatus(EFI_UNSUPPORTED);
} else {
//
// Process Notification and Give control back to the boot loader framework caller
//
Status = FspNotificationHandler (NotificationValue);
SetFspApiReturnStatus(Status);
if (!EFI_ERROR(Status)) {
NotificationCount++;
SetFspApiReturnStatus(EFI_SUCCESS);
if (NotificationValue == EnumInitPhaseReadyToBoot) {
break;
}
}
}
SetFspMeasurePoint (FSP_PERF_ID_API_NOTIFY_POSTPCI_EXIT + Count);
Pei2LoaderSwitchStack();
}
//
// Control goes back to the PEI Core and it dispatches further PEIMs.
// DXEIPL is the final one to transfer control back to the boot loader.
//
}
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