131 lines
2.4 KiB
C
131 lines
2.4 KiB
C
/*++
|
|
|
|
Copyright (c) 1998 Intel Corporation
|
|
|
|
Module Name:
|
|
|
|
init.c
|
|
|
|
Abstract:
|
|
|
|
Shell Environment driver
|
|
|
|
|
|
|
|
Revision History
|
|
|
|
--*/
|
|
|
|
#include "shelle.h"
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
EFI_STATUS
|
|
InitializeShellEnvironment (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
);
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
EFI_DRIVER_ENTRY_POINT(InitializeShellEnvironment)
|
|
|
|
EFI_STATUS
|
|
InitializeShellEnvironment (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Arguments:
|
|
|
|
ImageHandle - The handle for this driver
|
|
|
|
SystemTable - The system table
|
|
|
|
Returns:
|
|
|
|
EFI file system driver is enabled
|
|
|
|
--*/
|
|
{
|
|
EFI_HANDLE Handle;
|
|
UINTN BufferSize;
|
|
EFI_STATUS Status;
|
|
|
|
/*
|
|
* Initialize EFI library
|
|
*/
|
|
|
|
InitializeLib (ImageHandle, SystemTable);
|
|
|
|
/*
|
|
* If we are already installed, don't install again
|
|
*/
|
|
|
|
BufferSize = sizeof(Handle);
|
|
Status = BS->LocateHandle(ByProtocol, &ShellEnvProtocol, NULL, &BufferSize, &Handle);
|
|
if (!EFI_ERROR(Status)) {
|
|
return EFI_LOAD_ERROR;
|
|
}
|
|
|
|
/*
|
|
* Initialize globals
|
|
*/
|
|
|
|
InitializeLock (&SEnvLock, TPL_APPLICATION);
|
|
InitializeLock (&SEnvGuidLock, TPL_NOTIFY);
|
|
|
|
SEnvInitCommandTable();
|
|
SEnvInitProtocolInfo();
|
|
SEnvInitVariables();
|
|
SEnvInitHandleGlobals();
|
|
SEnvInitMap();
|
|
SEnvLoadInternalProtInfo();
|
|
SEnvConIoInitDosKey();
|
|
SEnvInitBatch();
|
|
|
|
/*
|
|
* Install our handle (or override the existing one)
|
|
*/
|
|
|
|
BufferSize = sizeof(Handle);
|
|
Handle = ImageHandle;
|
|
BS->LocateHandle(ByProtocol, &ShellEnvProtocol, NULL, &BufferSize, &Handle);
|
|
LibInstallProtocolInterfaces (&Handle, &ShellEnvProtocol, &SEnvInterface, NULL);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
|
|
EFI_SHELL_INTERFACE *
|
|
SEnvNewShell (
|
|
IN EFI_HANDLE ImageHandle
|
|
)
|
|
{
|
|
EFI_SHELL_INTERFACE *ShellInt;
|
|
|
|
/* Allocate a new structure */
|
|
ShellInt = AllocateZeroPool (sizeof(EFI_SHELL_INTERFACE));
|
|
ASSERT (ShellInt);
|
|
|
|
/* Fill in the SI pointer */
|
|
BS->HandleProtocol (ImageHandle, &LoadedImageProtocol, (VOID*)&ShellInt->Info);
|
|
|
|
/* Fill in the std file handles */
|
|
ShellInt->ImageHandle = ImageHandle;
|
|
ShellInt->StdIn = &SEnvIOFromCon;
|
|
ShellInt->StdOut = &SEnvIOFromCon;
|
|
ShellInt->StdErr = &SEnvErrIOFromCon;
|
|
|
|
return ShellInt;
|
|
}
|
|
|