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/** @file
PCH RESET PEIM DRIVER.
Copyright (c) 2017, 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 that 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/IoLib.h>
#include <Library/HobLib.h>
#include <Library/DebugLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <PchAccess.h>
#include <Ppi/Reset2.h>
#include <Ppi/PchReset.h>
#include <Library/ResetSystemLib.h>
#include <PchResetPlatformSpecific.h>
VOID
EFIAPI
ResetPlatformSpecific (
IN EFI_STATUS ResetStatus,
IN UINTN DataSize,
IN VOID *ResetData OPTIONAL
);
/**
Resets the entire platform.
@param[in] ResetType UEFI defined reset type.
@param[in] ResetStatus The status code for the reset.
@param[in] DataSize The size of ResetData in bytes.
@param[in] ResetData Optional element used to introduce a platform specific reset.
The exact type of the reset is defined by the EFI_GUID that follows
the Null-terminated Unicode string.
**/
VOID
EFIAPI
ResetSystem (
IN EFI_RESET_TYPE ResetType,
IN EFI_STATUS ResetStatus,
IN UINTN DataSize,
IN VOID *ResetData OPTIONAL
)
{
switch (ResetType) {
case EfiResetWarm:
ResetWarm ();
break;
case EfiResetCold:
ResetCold ();
break;
case EfiResetShutdown:
ResetShutdown ();
return;
case EfiResetPlatformSpecific:
ResetPlatformSpecific (ResetStatus, DataSize, ResetData);
return;
default:
return;
}
//
// Given we should have reset getting here would be bad
//
ASSERT (FALSE);
}
/**
Execute Pch Reset from the host controller.
@param[in] This Pointer to the PCH_RESET_PPI instance.
@param[in] PchResetType Pch Reset Types which includes PchColdReset, PchWarmReset,
PchShutdownReset, PchGlobalReset
@retval EFI_SUCCESS Successfully completed.
@retval EFI_INVALID_PARAMETER If ResetType is invalid.
**/
EFI_STATUS
EFIAPI
Reset (
IN PCH_RESET_PPI *This,
IN PCH_RESET_TYPE PchResetType
)
{
PCH_RESET_DATA ResetData;
switch (PchResetType) {
case PchColdReset:
ResetCold();
break;
case PchWarmReset:
ResetWarm();
break;
case PchShutdownReset:
ResetShutdown();
break;
case PchGlobalReset:
CopyMem (&ResetData.Guid, &gPchGlobalResetGuid, sizeof (EFI_GUID));
StrCpyS (ResetData.Description, PCH_RESET_DATA_STRING_MAX_LENGTH, PCH_PLATFORM_SPECIFIC_RESET_STRING);
ResetPlatformSpecific (EFI_SUCCESS, sizeof (PCH_RESET_DATA), &ResetData);
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
Initialize PCH Reset APIs
@retval EFI_SUCCESS APIs are installed successfully
@retval EFI_OUT_OF_RESOURCES Can't allocate pool
**/
EFI_STATUS
EFIAPI
PchInitializeReset (
VOID
)
{
EFI_STATUS Status;
PCH_RESET_PPI *PeiPchResetPpi;
EFI_PEI_PPI_DESCRIPTOR *PeiPchResetDescriptor;
EFI_PEI_RESET2_PPI *EfiPeiReset2Ppi;
EFI_PEI_PPI_DESCRIPTOR *EfiPeiReset2Descriptor;
DEBUG ((DEBUG_INFO, "PchInitializeReset() Start\n"));
PeiPchResetDescriptor = (EFI_PEI_PPI_DESCRIPTOR *) AllocateZeroPool (sizeof (EFI_PEI_PPI_DESCRIPTOR));
PeiPchResetPpi = (PCH_RESET_PPI *) AllocateZeroPool (sizeof (PCH_RESET_PPI));
if ((PeiPchResetDescriptor == NULL) ||
(PeiPchResetPpi == NULL)) {
ASSERT (FALSE);
return EFI_OUT_OF_RESOURCES;
}
///
/// Initialize the Reset ppi instance
///
PeiPchResetPpi->Reset = Reset;
PeiPchResetDescriptor->Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST;
PeiPchResetDescriptor->Guid = &gPchResetPpiGuid;
PeiPchResetDescriptor->Ppi = PeiPchResetPpi;
///
/// Install the PCH RESET PPI
///
Status = PeiServicesInstallPpi (PeiPchResetDescriptor);
ASSERT_EFI_ERROR (Status);
EfiPeiReset2Descriptor = (EFI_PEI_PPI_DESCRIPTOR *) AllocateZeroPool (sizeof (EFI_PEI_PPI_DESCRIPTOR));
EfiPeiReset2Ppi = (EFI_PEI_RESET2_PPI *) AllocateZeroPool (sizeof (EFI_PEI_RESET2_PPI));
if ((EfiPeiReset2Descriptor == NULL) ||
(EfiPeiReset2Ppi == NULL)) {
ASSERT (FALSE);
return EFI_OUT_OF_RESOURCES;
}
///
/// Initialize the EFI Reset2 ppi instance
///
EfiPeiReset2Ppi->ResetSystem = ResetSystem;
EfiPeiReset2Descriptor->Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST;
EfiPeiReset2Descriptor->Guid = &gEfiPeiReset2PpiGuid;
EfiPeiReset2Descriptor->Ppi = EfiPeiReset2Ppi;
Status = PeiServicesInstallPpi (EfiPeiReset2Descriptor);
ASSERT_EFI_ERROR (Status);
DEBUG ((DEBUG_INFO, "PchInitializeReset() End\n"));
return Status;
}
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