From b700a82719128f37d545384a8f4bc5faadaef518 Mon Sep 17 00:00:00 2001
From: Zhichao Gao <zhichao.gao@intel.com>
Date: Mon, 8 Apr 2019 16:14:15 +0800
Subject: [PATCH] PcAtChipsetPkg/ResetSystemLib: Add new API ResetSystem

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1460

Add a new API ResetSystem to this ResetSystemLib instance.
It only adds the basic functions from ResetSystemRuntimeDxe.
Lacking of this interface may cause link error, if some drivers
use this new API and link to this library instance.
Notes:
This library API only provide a basic function of reset. Full
function should use the instance in the MdeModulePkg and make
sure the depex driver is dispatched.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
---
 .../Library/ResetSystemLib/ResetSystemLib.c   | 48 ++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/PcAtChipsetPkg/Library/ResetSystemLib/ResetSystemLib.c b/PcAtChipsetPkg/Library/ResetSystemLib/ResetSystemLib.c
index eccef89ebe..7fe1663c97 100644
--- a/PcAtChipsetPkg/Library/ResetSystemLib/ResetSystemLib.c
+++ b/PcAtChipsetPkg/Library/ResetSystemLib/ResetSystemLib.c
@@ -1,13 +1,16 @@
 /** @file
   Reset System Library functions for PCAT platforms
 
-  Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 
 #include <Base.h>
 
+#include <Uefi/UefiBaseType.h>
+#include <Uefi/UefiMultiPhase.h>
+
 #include <Library/DebugLib.h>
 #include <Library/IoLib.h>
 
@@ -99,3 +102,46 @@ ResetPlatformSpecific (
 {
   ResetCold ();
 }
+
+/**
+  The ResetSystem function 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 ResetData.
+  @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. The string is a description
+                            that the caller may use to further indicate the reason for the
+                            system reset.
+**/
+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 (DataSize, ResetData);
+    return;
+
+  default:
+    return;
+  }
+}
-- 
2.39.2