From a75c029f601cceb21999fcb8c676b14d26a9906d Mon Sep 17 00:00:00 2001
From: Zhiguang Liu <zhiguang.liu@intel.com>
Date: Sun, 20 Jun 2021 23:30:07 +0800
Subject: UefiPayloadPkg: Add a separate PlatformHookLib for Universal Payload

Add a new separate PlatformHookLib for Universal Payload to consume Guid
Hob gUniversalPayloadSerialPortInfoGuid to get serial port information

Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
---
 .../PlatformHookLib.c                              | 82 ++++++++++++++++++++++
 .../PlatformHookLib.inf                            | 41 +++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.c
 create mode 100644 UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.inf

diff --git a/UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.c b/UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.c
new file mode 100644
index 0000000..6705f29
--- /dev/null
+++ b/UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.c
@@ -0,0 +1,82 @@
+/** @file
+  Platform Hook Library instance for UART device.
+
+  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <PiDxe.h>
+#include <UniversalPayload/SerialPortInfo.h>
+#include <Library/PlatformHookLib.h>
+#include <Library/PcdLib.h>
+#include <Library/HobLib.h>
+
+/**
+  Performs platform specific initialization required for the CPU to access
+  the hardware associated with a SerialPortLib instance.  This function does
+  not initialize the serial port hardware itself.  Instead, it initializes
+  hardware devices that are required for the CPU to access the serial port
+  hardware.  This function may be called more than once.
+
+  @retval RETURN_SUCCESS       The platform specific initialization succeeded.
+  @retval RETURN_DEVICE_ERROR  The platform specific initialization could not be completed.
+
+**/
+RETURN_STATUS
+EFIAPI
+PlatformHookSerialPortInitialize (
+  VOID
+  )
+{
+  RETURN_STATUS                       Status;
+  UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO  *SerialPortInfo;
+  UINT8                               *GuidHob;
+  UNIVERSAL_PAYLOAD_GENERIC_HEADER    *GenericHeader;
+
+  GuidHob = GetFirstGuidHob (&gUniversalPayloadSerialPortInfoGuid);
+  if (GuidHob == NULL) {
+    return EFI_NOT_FOUND;
+  }
+
+  GenericHeader = (UNIVERSAL_PAYLOAD_GENERIC_HEADER *) GET_GUID_HOB_DATA (GuidHob);
+  if ((sizeof (UNIVERSAL_PAYLOAD_GENERIC_HEADER) > GET_GUID_HOB_DATA_SIZE (GuidHob)) || (GenericHeader->Length > GET_GUID_HOB_DATA_SIZE (GuidHob))) {
+    return EFI_NOT_FOUND;
+  }
+
+  if (GenericHeader->Revision == UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO_REVISION) {
+    SerialPortInfo = (UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO *) GET_GUID_HOB_DATA (GuidHob);
+    if (GenericHeader->Length < UNIVERSAL_PAYLOAD_SIZEOF_THROUGH_FIELD (UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO, RegisterBase)) {
+      //
+      // Return if can't find the Serial Port Info Hob with enough length
+      //
+      return EFI_NOT_FOUND;
+    }
+
+    Status = PcdSetBoolS (PcdSerialUseMmio, SerialPortInfo->UseMmio);
+    if (RETURN_ERROR (Status)) {
+      return Status;
+    }
+    Status = PcdSet64S (PcdSerialRegisterBase, SerialPortInfo->RegisterBase);
+    if (RETURN_ERROR (Status)) {
+      return Status;
+    }
+    Status = PcdSet32S (PcdSerialRegisterStride, SerialPortInfo->RegisterStride);
+    if (RETURN_ERROR (Status)) {
+      return Status;
+    }
+    Status = PcdSet32S (PcdSerialBaudRate, SerialPortInfo->BaudRate);
+    if (RETURN_ERROR (Status)) {
+      return Status;
+    }
+    Status = PcdSet64S (PcdUartDefaultBaudRate, SerialPortInfo->BaudRate);
+    if (RETURN_ERROR (Status)) {
+      return Status;
+    }
+
+    return RETURN_SUCCESS;
+  }
+
+  return EFI_NOT_FOUND;
+}
diff --git a/UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.inf b/UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.inf
new file mode 100644
index 0000000..41e05dd
--- /dev/null
+++ b/UefiPayloadPkg/Library/UniversalPayloadPlatformHookLib/PlatformHookLib.inf
@@ -0,0 +1,41 @@
+## @file
+#  Platform Hook Library instance for UART device for Universal Payload.
+#
+#  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PlatformHookLib
+  FILE_GUID                      = 807E05AB-9411-429F-97F0-FE425BF6B094
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PlatformHookLib
+  CONSTRUCTOR                    = PlatformHookSerialPortInitialize
+
+[Sources]
+  PlatformHookLib.c
+
+[LibraryClasses]
+  PcdLib
+  BaseLib
+  HobLib
+  DxeHobListLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  UefiPayloadPkg/UefiPayloadPkg.dec
+
+[Guids]
+  gUniversalPayloadSerialPortInfoGuid
+
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSerialUseMmio         ## PRODUCES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterBase    ## PRODUCES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSerialBaudRate        ## PRODUCES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterStride  ## PRODUCES
+  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate         ## PRODUCES
-- 
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