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Diffstat (limited to 'Board/EM/MeWrapper/AmtWrapper/Dxe/BdsConsole.c')
| -rw-r--r-- | Board/EM/MeWrapper/AmtWrapper/Dxe/BdsConsole.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/Board/EM/MeWrapper/AmtWrapper/Dxe/BdsConsole.c b/Board/EM/MeWrapper/AmtWrapper/Dxe/BdsConsole.c new file mode 100644 index 0000000..b55a0a1 --- /dev/null +++ b/Board/EM/MeWrapper/AmtWrapper/Dxe/BdsConsole.c @@ -0,0 +1,251 @@ +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2010, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//************************************************************************* +//********************************************************************** +// +// $Header: /Alaska/SOURCE/Modules/SharkBayRefCodes/ME/AmtWrapper/AmtWrapperDxe/BdsConsole.c 2 5/14/14 9:53p Tristinchou $ +// +// $Revision: 2 $ +// +// $Date: 5/14/14 9:53p $ +// +//********************************************************************** +// Revision History +// ---------------- +// $Log: /Alaska/SOURCE/Modules/SharkBayRefCodes/ME/AmtWrapper/AmtWrapperDxe/BdsConsole.c $ +// +// 2 5/14/14 9:53p Tristinchou +// [TAG] EIP167030 +// [Category] Improvement +// [Description] Remove the variable runtime attribute and keep original +// attributes. +// +// 1 2/08/12 1:08a Klzhan +// Initial Check in +// +// 1 2/25/11 1:43a Klzhan +// Initial Check-in +// +// 1 12/03/10 5:10a Klzhan +// Initial Check-in. +// +// +//********************************************************************** + +//<AMI_FHDR_START> +//---------------------------------------------------------------------------- +// +// Name: BdsConsole.c +// +// Description: Connect the Console device for AMT. +// +//---------------------------------------------------------------------------- +//<AMI_FHDR_END> +/*++ + +Copyright (c) 2004, Intel Corporation +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. + +Module Name: + + BdsConsole.c + +Abstract: + + BDS Lib functions which contain all the code to connect console device + +--*/ + +#include "BdsLib.h" +#include "EfiPrintLib.h" + +EFI_STATUS +BdsLibUpdateConsoleVariable ( + IN CHAR16 *ConVarName, + IN EFI_DEVICE_PATH_PROTOCOL *CustomizedConDevicePath, + IN EFI_DEVICE_PATH_PROTOCOL *ExclusiveDevicePath + ) +/*++ + +Routine Description: + + This function update console variable based on ConVarName, it can + add or remove one specific console device path from the variable + +Arguments: + + ConVarName - Console related variable name, ConIn, ConOut, ErrOut. + + CustomizedConDevicePath - The console device path which will be added to + the console variable ConVarName, this parameter + can not be multi-instance. + + ExclusiveDevicePath - The console device path which will be removed + from the console variable ConVarName, this + parameter can not be multi-instance. + +Returns: + + EFI_UNSUPPORTED - Add or remove the same device path. + + EFI_SUCCESS - Success add or remove the device path from + the console variable. + +--*/ +{ + EFI_STATUS Status; + EFI_DEVICE_PATH_PROTOCOL *VarConsole; + UINTN DevicePathSize; + EFI_DEVICE_PATH_PROTOCOL *Instance; + EFI_DEVICE_PATH_PROTOCOL *NewDevicePath; + UINT32 VarAttr; + UINTN VarSize; + + + VarConsole = NULL; + DevicePathSize = 0; + NewDevicePath = NULL; + Status = EFI_UNSUPPORTED; + + // + // Notes: check the device path point, here should check + // with compare memory + // + if (CustomizedConDevicePath == ExclusiveDevicePath) { + return EFI_UNSUPPORTED; + } + // + // Delete the ExclusiveDevicePath from current default console + // + VarConsole = BdsLibGetVariableAndSize ( + ConVarName, + &gEfiGlobalVariableGuid, + &DevicePathSize + ); + + if (ExclusiveDevicePath != NULL && VarConsole != NULL) { + if (BdsLibMatchDevicePaths (VarConsole, ExclusiveDevicePath)) { + + Instance = EfiDevicePathInstance (&VarConsole, &DevicePathSize); + + while (VarConsole != NULL) { + if (EfiCompareMem ( + Instance, + ExclusiveDevicePath, + DevicePathSize - sizeof (EFI_DEVICE_PATH_PROTOCOL) + ) == 0) { + // + // Remove the match part + // + NewDevicePath = EfiAppendDevicePathInstance (NewDevicePath, VarConsole); + break; + } else { + // + // Continue the next instance + // + NewDevicePath = EfiAppendDevicePathInstance (NewDevicePath, Instance); + } + + Instance = EfiDevicePathInstance (&VarConsole, &DevicePathSize); + } + // + // Reset the console variable with new device path + // + VarAttr = 0; + VarSize = 0; + + Status = gRT->GetVariable( + ConVarName, + &gEfiGlobalVariableGuid, + &VarAttr, + &VarSize, + NULL ); + if( EFI_ERROR(Status) && Status != EFI_BUFFER_TOO_SMALL ) + { + VarAttr = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE; + VarSize = EfiDevicePathSize( NewDevicePath ); + } + + gRT->SetVariable( + ConVarName, + &gEfiGlobalVariableGuid, + VarAttr, + VarSize, + NewDevicePath ); + } + } + // + // Try to append customized device path + // + VarConsole = BdsLibGetVariableAndSize ( + ConVarName, + &gEfiGlobalVariableGuid, + &DevicePathSize + ); + + if (CustomizedConDevicePath != NULL) { + if (!BdsLibMatchDevicePaths (VarConsole, CustomizedConDevicePath)) { + // + // In the first check, the default console variable will be null, + // just append current customized device path + // + VarConsole = EfiAppendDevicePathInstance (VarConsole, CustomizedConDevicePath); + + // + // Update the variable of the default console + // + VarAttr = 0; + VarSize = 0; + + Status = gRT->GetVariable( + ConVarName, + &gEfiGlobalVariableGuid, + &VarAttr, + &VarSize, + NULL ); + if( EFI_ERROR(Status) && Status != EFI_BUFFER_TOO_SMALL ) + { + VarAttr = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE; + VarSize = EfiDevicePathSize( NewDevicePath ); + } + + gRT->SetVariable( + ConVarName, + &gEfiGlobalVariableGuid, + VarAttr, + VarSize, + VarConsole ); + } + } + + return EFI_SUCCESS; +} +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2010, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//*************************************************************************
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