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/** @file
*
* Copyright (c) 2013-2014, ARM Limited. All rights reserved.
*
* 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/DebugLib.h>
#include <Library/EfiResetSystemLib.h>
#include <Library/ArmSmcLib.h>
#include <ArmJunoSmc.h>
/**
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
)
{
UINTN Rx;
UINTN SystemState;
switch (ResetType) {
case EfiResetWarm:
case EfiResetCold:
// Map a warm reset into a cold reset
Rx = ARM_JUNO_ARM_FAST_SMC_SET_SYSTEM_POWER_STATE;
SystemState = ARM_JUNO_ARM_FAST_SMC_SYSTEM_POWER_STATE_REBOOT;
break;
case EfiResetShutdown:
Rx = ARM_JUNO_ARM_FAST_SMC_SET_SYSTEM_POWER_STATE;
SystemState = ARM_JUNO_ARM_FAST_SMC_SYSTEM_POWER_STATE_SHUTDOWN;
break;
default:
Rx = 0;
ASSERT(FALSE);
}
if (Rx != 0) {
ArmCallSmcArg1 (&Rx, &SystemState);
// We should never be here
while(1);
}
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;
}
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