143 lines
4.3 KiB
C
143 lines
4.3 KiB
C
/** @file
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2019 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains a 'Sample Driver' and is licensed as such under the terms
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of your license agreement with Intel or your vendor. This file may be modified
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by the user, subject to the additional terms of the license agreement.
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@par Specification Reference:
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**/
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#include <Base.h>
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#include <Uefi/UefiBaseType.h>
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#include <Protocol/SerialIo.h>
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#include <Library/HobLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/SerialIoUartDebugPropertyPcdLib.h>
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#include <Setup.h>
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/**
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Returns UART's attributes
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@param[in,out] UartAttributes Uart Attributes
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**/
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VOID
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SerialIoUartDebugGetAttributes (
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IN OUT SERIAL_IO_UART_ATTRIBUTES *UartAttributes
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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EFI_HOB_GUID_TYPE *GuidHob;
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DEBUG_CONFIG_DATA_HOB *DebugConfigData;
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//
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// Use PeiServicesGetHobList() to check HobList is ready or not.
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//
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PeiServicesGetHobList ((VOID **) &Hob.Raw);
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if (Hob.Raw != NULL) {
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GuidHob = NULL;
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DebugConfigData = NULL;
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GuidHob = GetFirstGuidHob (&gDebugConfigHobGuid);
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if (GuidHob != NULL) {
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DebugConfigData = (DEBUG_CONFIG_DATA_HOB *) GET_GUID_HOB_DATA (GuidHob);
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if (DebugConfigData != NULL) {
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UartAttributes->BaudRate = DebugConfigData->SerialIoUartDebugBaudRate;
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UartAttributes->DataBits = DebugConfigData->SerialIoUartDebugDataBits;
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UartAttributes->StopBits = DebugConfigData->SerialIoUartDebugStopBits;
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UartAttributes->Parity = DebugConfigData->SerialIoUartDebugParity;
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UartAttributes->AutoFlow = DebugConfigData->SerialIoUartDebugFlowControl;
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return;
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}
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}
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}
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//
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// Unable to obtain data from the HOB, returning data from Pcd
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//
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SerialIoUartDebugPcdGetAttributes (UartAttributes);
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}
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/**
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Returns Serial Io UART Controller Number used in Debug mode
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@retval ControllerNumber UART Controller Number
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**/
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UINT8
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SerialIoUartDebugGetControllerNumber (
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VOID
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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EFI_HOB_GUID_TYPE *GuidHob;
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DEBUG_CONFIG_DATA_HOB *DebugConfigData;
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STATIC UINT8 ControllerNumber = 0xFF;
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if (ControllerNumber != 0xFF) {
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return ControllerNumber;
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}
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//
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// Use PeiServicesGetHobList() to check HobList is ready or not.
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//
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PeiServicesGetHobList ((VOID **) &Hob.Raw);
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if (Hob.Raw != NULL) {
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GuidHob = NULL;
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DebugConfigData = NULL;
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GuidHob = GetFirstGuidHob (&gDebugConfigHobGuid);
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if (GuidHob != NULL) {
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DebugConfigData = (DEBUG_CONFIG_DATA_HOB *) GET_GUID_HOB_DATA (GuidHob);
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if (DebugConfigData != NULL) {
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ControllerNumber = DebugConfigData->SerialIoUartDebugControllerNumber;
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}
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}
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}
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//
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// Unable to obtain data from the HOB, returning data from PcdLib
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//
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if (ControllerNumber == 0xFF) {
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return SerialIoUartDebugPcdGetControllerNumber ();
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}
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return ControllerNumber;
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}
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/**
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Returns Serial Io UART MMIO Base Address
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@retval MMIO Base Address by default in PCI Mode
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**/
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UINT32
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SerialIoUartDebugGetPciDefaultMmioBase (
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VOID
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)
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{
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return SerialIoUartDebugPcdGetPciDefaultMmioBase ();
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}
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