mirror of https://github.com/acidanthera/audk.git
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/** @file
|
|
Support ResetSystem Runtime call using PSCI calls
|
|
|
|
Note: A similar library is implemented in
|
|
ArmPkg/Library/ArmPsciResetSystemLib. Similar issues might
|
|
exist in this implementation too.
|
|
|
|
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
|
Copyright (c) 2013, ARM Ltd. All rights reserved.<BR>
|
|
Copyright (c) 2014, Linaro Ltd. 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 <PiDxe.h>
|
|
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/EfiResetSystemLib.h>
|
|
#include <Library/ArmSmcLib.h>
|
|
#include <Library/ArmHvcLib.h>
|
|
|
|
#include <IndustryStandard/ArmStdSmc.h>
|
|
|
|
STATIC UINT32 mArmPsciMethod;
|
|
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
ArmPsciResetSystemLibConstructor (
|
|
VOID
|
|
)
|
|
{
|
|
mArmPsciMethod = PcdGet32 (PcdArmPsciMethod);
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Resets the entire platform.
|
|
|
|
@param ResetType The type of reset to perform.
|
|
@param ResetStatus The status code for the reset.
|
|
@param DataSize The size, in bytes, of WatchdogData.
|
|
@param ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
|
|
EfiResetShutdown the data buffer starts with a Null-terminated
|
|
Unicode string, optionally followed by additional binary data.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
LibResetSystem (
|
|
IN EFI_RESET_TYPE ResetType,
|
|
IN EFI_STATUS ResetStatus,
|
|
IN UINTN DataSize,
|
|
IN CHAR16 *ResetData OPTIONAL
|
|
)
|
|
{
|
|
ARM_SMC_ARGS ArmSmcArgs;
|
|
ARM_HVC_ARGS ArmHvcArgs;
|
|
|
|
switch (ResetType) {
|
|
|
|
case EfiResetPlatformSpecific:
|
|
// Map the platform specific reset as reboot
|
|
case EfiResetWarm:
|
|
// Map a warm reset into a cold reset
|
|
case EfiResetCold:
|
|
// Send a PSCI 0.2 SYSTEM_RESET command
|
|
ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
|
|
ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET;
|
|
break;
|
|
case EfiResetShutdown:
|
|
// Send a PSCI 0.2 SYSTEM_OFF command
|
|
ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF;
|
|
ArmHvcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF;
|
|
break;
|
|
default:
|
|
ASSERT (FALSE);
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
switch (mArmPsciMethod) {
|
|
case 1:
|
|
ArmCallHvc (&ArmHvcArgs);
|
|
break;
|
|
|
|
case 2:
|
|
ArmCallSmc (&ArmSmcArgs);
|
|
break;
|
|
|
|
default:
|
|
DEBUG ((EFI_D_ERROR, "%a: no PSCI method defined\n", __FUNCTION__));
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
// We should never be here
|
|
DEBUG ((EFI_D_ERROR, "%a: PSCI Reset failed\n", __FUNCTION__));
|
|
CpuDeadLoop ();
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
/**
|
|
Initialize any infrastructure required for LibResetSystem () to function.
|
|
|
|
@param ImageHandle The firmware allocated handle for the EFI image.
|
|
@param SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
LibInitializeResetSystem (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
return EFI_SUCCESS;
|
|
}
|