180 lines
3.4 KiB
C
180 lines
3.4 KiB
C
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/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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initx86.c
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Abstract:
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Does any x86-specific initialization, then starts the common ARC osloader
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Author:
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John Vert (jvert) 4-Nov-1993
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Revision History:
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--*/
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#include "bldrx86.h"
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#include "msg.h"
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#include "stdio.h"
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VOID
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BlInitializeTerminal(
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VOID
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);
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UCHAR BootPartitionName[80];
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UCHAR KernelBootDevice[80];
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UCHAR OsLoadFilename[100];
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UCHAR OsLoaderFilename[100];
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UCHAR SystemPartition[100];
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UCHAR OsLoadPartition[100];
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UCHAR OsLoadOptions[100];
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UCHAR ConsoleInputName[50];
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UCHAR MyBuffer[SECTOR_SIZE+32];
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UCHAR ConsoleOutputName[50];
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UCHAR X86SystemPartition[sizeof("x86systempartition=") + sizeof(BootPartitionName)];
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VOID
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BlStartup(
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IN PCHAR PartitionName
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)
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/*++
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Routine Description:
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Does x86-specific initialization, particularly presenting the boot.ini
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menu and running NTDETECT, then calls to the common osloader.
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Arguments:
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PartitionName - Supplies the ARC name of the partition (or floppy) that
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setupldr was loaded from.
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Return Value:
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Does not return
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--*/
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{
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ULONG Argc = 0;
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PUCHAR Argv[10];
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ARC_STATUS Status;
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ULONG BootFileId;
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PCHAR BootFile;
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ULONG Read;
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PCHAR p;
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ULONG i;
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ULONG DriveId;
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ULONG FileSize;
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ULONG Count;
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LARGE_INTEGER SeekPosition;
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PCHAR LoadOptions = NULL;
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BOOLEAN UseTimeOut=TRUE;
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BOOLEAN AlreadyInitialized = FALSE;
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extern BOOLEAN FwDescriptorsValid;
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//
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// Initialize ARC StdIo functionality
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//
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strcpy(ConsoleInputName,"consolein=multi(0)key(0)keyboard(0)");
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strcpy(ConsoleOutputName,"consoleout=multi(0)video(0)monitor(0)");
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Argv[0]=ConsoleInputName;
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Argv[1]=ConsoleOutputName;
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BlInitStdio (2, Argv);
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//
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// Initialize any dumb terminal that may be connected.
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//
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BlInitializeTerminal();
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//
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// Announce the loader
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//
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BlPrint(OsLoaderVersion);
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//
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// The main functionality of the OS chooser.
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//
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BlOsLoader( Argc, Argv, NULL );
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//
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// If we ever come back here, just wait to reboot.
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//
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if (BlIsTerminalConnected()) {
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if (BlTerminalHandleLoaderFailure()) {
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ArcRestart();
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}
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} else {
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REBOOT(0);
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}
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}
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VOID
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BlInitializeTerminal(
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VOID
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)
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/*++
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Routine Description:
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Does x86-specific initialization of a dumb terminal connected to a serial port.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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{
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//
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// Try to initialize the headless port.
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//
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BlInitializeHeadlessPort();
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if( LoaderRedirectionInformation.PortNumber == 0 ) {
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//
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// we didn't get anything from the BIOS. See if StartROM
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// was redirecting.
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//
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if( (BOOLEAN)(BIOS_REDIRECT_SERVICE(1) != -1) ) {
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//
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// He is. Pick up his settings.
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//
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RtlZeroMemory( &LoaderRedirectionInformation, sizeof(HEADLESS_LOADER_BLOCK) );
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LoaderRedirectionInformation.PortNumber = (ULONG)BIOS_REDIRECT_SERVICE(1);
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LoaderRedirectionInformation.BaudRate = (ULONG)BIOS_REDIRECT_SERVICE(2);
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LoaderRedirectionInformation.Parity = (BOOLEAN)BIOS_REDIRECT_SERVICE(3);
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LoaderRedirectionInformation.StopBits = (UCHAR)BIOS_REDIRECT_SERVICE(4);
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//
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// Now try again, this time with feeling...
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//
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BlInitializeHeadlessPort();
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}
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}
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}
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