mirror of https://github.com/acidanthera/audk.git
182 lines
4.2 KiB
C
182 lines
4.2 KiB
C
/** @file
|
|
Reset Architectural Protocol implementation
|
|
|
|
Copyright (c) 2006 - 2010, 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 "ResetSystem.h"
|
|
|
|
//
|
|
// The handle onto which the Reset Architectural Protocol is installed
|
|
//
|
|
EFI_HANDLE mResetHandle = NULL;
|
|
|
|
/**
|
|
The driver's entry point.
|
|
|
|
It initializes the Reset Architectural Protocol.
|
|
|
|
@param[in] ImageHandle The firmware allocated handle for the EFI image.
|
|
@param[in] SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The entry point is executed successfully.
|
|
@retval other Cannot install ResetArch protocol.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
InitializeResetSystem (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
//
|
|
// Make sure the Reset Architectural Protocol is not already installed in the system
|
|
//
|
|
ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiResetArchProtocolGuid);
|
|
|
|
//
|
|
// Hook the runtime service table
|
|
//
|
|
gRT->ResetSystem = ResetSystem;
|
|
|
|
//
|
|
// Now install the Reset RT AP on a new handle
|
|
//
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&mResetHandle,
|
|
&gEfiResetArchProtocolGuid,
|
|
NULL,
|
|
NULL
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Reset system for capsule update.
|
|
|
|
@param[in] CapsuleDataPtr Pointer to the capsule block descriptors.
|
|
|
|
**/
|
|
VOID
|
|
CapsuleReset (
|
|
IN UINTN CapsuleDataPtr
|
|
)
|
|
{
|
|
//
|
|
// This implementation assumes that we're using a variable
|
|
// to indicate capsule updates.
|
|
//
|
|
gRT->SetVariable (
|
|
EFI_CAPSULE_VARIABLE_NAME,
|
|
&gEfiCapsuleVendorGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,
|
|
sizeof (UINTN),
|
|
(VOID *) &CapsuleDataPtr
|
|
);
|
|
|
|
EnterS3WithImmediateWake ();
|
|
|
|
//
|
|
// Should not return
|
|
//
|
|
CpuDeadLoop ();
|
|
}
|
|
|
|
/**
|
|
Put the system into S3 power state.
|
|
**/
|
|
VOID
|
|
DoS3 (
|
|
VOID
|
|
)
|
|
{
|
|
EnterS3WithImmediateWake ();
|
|
|
|
//
|
|
// Should not return
|
|
//
|
|
CpuDeadLoop ();
|
|
}
|
|
|
|
/**
|
|
Resets the entire platform.
|
|
|
|
@param[in] ResetType The type of reset to perform.
|
|
@param[in] ResetStatus The status code for the reset.
|
|
@param[in] DataSize The size, in bytes, of WatchdogData.
|
|
@param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
|
|
EfiResetShutdown the data buffer starts with a Null-terminated
|
|
string, optionally followed by additional binary data.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
ResetSystem (
|
|
IN EFI_RESET_TYPE ResetType,
|
|
IN EFI_STATUS ResetStatus,
|
|
IN UINTN DataSize,
|
|
IN VOID *ResetData OPTIONAL
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINTN Size;
|
|
UINTN CapsuleDataPtr;
|
|
|
|
switch (ResetType) {
|
|
case EfiResetWarm:
|
|
|
|
//
|
|
//Check if there are pending capsules to process
|
|
//
|
|
Size = sizeof (CapsuleDataPtr);
|
|
Status = EfiGetVariable (
|
|
EFI_CAPSULE_VARIABLE_NAME,
|
|
&gEfiCapsuleVendorGuid,
|
|
NULL,
|
|
&Size,
|
|
(VOID *) &CapsuleDataPtr
|
|
);
|
|
|
|
if (Status == EFI_SUCCESS) {
|
|
//
|
|
//Process capsules across a system reset.
|
|
//
|
|
DoS3();
|
|
}
|
|
|
|
ResetWarm ();
|
|
|
|
break;
|
|
|
|
case EfiResetCold:
|
|
ResetCold ();
|
|
break;
|
|
|
|
case EfiResetShutdown:
|
|
ResetShutdown ();
|
|
return ;
|
|
|
|
default:
|
|
return ;
|
|
}
|
|
|
|
//
|
|
// Given we should have reset getting here would be bad
|
|
//
|
|
ASSERT (FALSE);
|
|
}
|