37078045d7
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com> Cc: Amy Chan <amy.chan@intel.com>
164 lines
4.2 KiB
C
164 lines
4.2 KiB
C
/** @file
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Reset Architectural Protocol implementation
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Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "ResetSystem.h"
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//
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// The handle onto which the Reset Architectural Protocol is installed
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//
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EFI_HANDLE mResetHandle = NULL;
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/**
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The driver's entry point.
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It initializes the Reset Architectural Protocol.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval other Cannot install ResetArch protocol.
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**/
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EFI_STATUS
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EFIAPI
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InitializeResetSystem (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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//
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// Make sure the Reset Architectural Protocol is not already installed in the system
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//
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ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiResetArchProtocolGuid);
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//
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// Hook the runtime service table
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//
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gRT->ResetSystem = ResetSystem;
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//
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// Now install the Reset RT AP on a new handle
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&mResetHandle,
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&gEfiResetArchProtocolGuid,
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NULL,
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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/**
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Put the system into S3 power state.
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**/
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VOID
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DoS3 (
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VOID
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)
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{
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EnterS3WithImmediateWake ();
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//
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// Should not return
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//
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CpuDeadLoop ();
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}
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/**
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Resets the entire platform.
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@param[in] ResetType The type of reset to perform.
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@param[in] ResetStatus The status code for the reset.
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@param[in] DataSize The size, in bytes, of ResetData.
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@param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
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EfiResetShutdown the data buffer starts with a Null-terminated
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string, optionally followed by additional binary data.
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The string is a description that the caller may use to further
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indicate the reason for the system reset. ResetData is only
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valid if ResetStatus is something other than EFI_SUCCESS
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unless the ResetType is EfiResetPlatformSpecific
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where a minimum amount of ResetData is always required.
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**/
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VOID
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EFIAPI
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ResetSystem (
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IN EFI_RESET_TYPE ResetType,
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IN EFI_STATUS ResetStatus,
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IN UINTN DataSize,
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IN VOID *ResetData OPTIONAL
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)
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{
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EFI_STATUS Status;
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UINTN Size;
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UINTN CapsuleDataPtr;
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//
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// Indicate reset system runtime service is called.
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//
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REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_EFI_RUNTIME_SERVICE | EFI_SW_RS_PC_RESET_SYSTEM));
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switch (ResetType) {
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case EfiResetWarm:
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//
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//Check if there are pending capsules to process
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//
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Size = sizeof (CapsuleDataPtr);
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Status = EfiGetVariable (
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EFI_CAPSULE_VARIABLE_NAME,
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&gEfiCapsuleVendorGuid,
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NULL,
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&Size,
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(VOID *) &CapsuleDataPtr
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);
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if (Status == EFI_SUCCESS) {
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//
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//Process capsules across a system reset.
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//
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DoS3();
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}
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ResetWarm ();
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break;
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case EfiResetCold:
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ResetCold ();
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break;
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case EfiResetShutdown:
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ResetShutdown ();
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return ;
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case EfiResetPlatformSpecific:
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ResetPlatformSpecific (DataSize, ResetData);
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return;
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default:
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return ;
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}
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//
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// Given we should have reset getting here would be bad
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//
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ASSERT (FALSE);
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}
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