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/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
initx86.c
Abstract:
Does any x86-specific initialization, then starts the common ARC osloader
Author:
John Vert (jvert) 4-Nov-1993
Revision History:
--*/
#include "bldrx86.h"
#include "msg.h"
UCHAR BootPartitionName[80];
UCHAR KernelBootDevice[80];
UCHAR OsLoadFilename[100];
UCHAR OsLoaderFilename[100];
UCHAR SystemPartition[100];
UCHAR OsLoadPartition[100];
UCHAR OsLoadOptions[100];
UCHAR ConsoleInputName[50];
UCHAR MyBuffer[SECTOR_SIZE+32];
UCHAR ConsoleOutputName[50];
UCHAR X86SystemPartition[sizeof("x86systempartition=") + sizeof(BootPartitionName)];
VOID
BlStartup(
IN PCHAR PartitionName
)
/*++
Routine Description:
Does x86-specific initialization, particularly presenting the boot.ini
menu and running NTDETECT, then calls to the common osloader.
Arguments:
PartitionName - Supplies the ARC name of the partition (or floppy) that
setupldr was loaded from.
Return Value:
Does not return
--*/
{
PUCHAR Argv[10];
ARC_STATUS Status;
ULONG BootFileId;
PCHAR BootFile;
ULONG Read;
PCHAR p;
ULONG i;
ULONG DriveId;
ULONG FileSize;
ULONG Count;
LARGE_INTEGER SeekPosition;
PCHAR LoadOptions = NULL;
BOOLEAN UseTimeOut=TRUE;
BOOLEAN AlreadyInitialized = FALSE;
extern BOOLEAN FwDescriptorsValid;
//
// Open the boot partition so we can load boot drivers off it.
//
Status = ArcOpen(PartitionName, ArcOpenReadOnly, &DriveId);
if (Status != ESUCCESS) {
BlPrint("Couldn't open drive %s\n",PartitionName);
BlPrint(BlFindMessage(BL_DRIVE_ERROR),PartitionName);
goto BootFailed;
}
//
// Initialize dbcs font and display support.
//
TextGrInitialize(DriveId);
do {
Status = BlOpen( DriveId,
"\\boot.ini",
ArcOpenReadOnly,
&BootFileId );
BootFile = MyBuffer;
RtlZeroMemory(MyBuffer, SECTOR_SIZE+32);
if (Status != ESUCCESS) {
BootFile[0]='\0';
} else {
//
// Determine the length of the boot.ini file by reading to the end of
// file.
//
FileSize = 0;
do {
Status = BlRead(BootFileId, BootFile, SECTOR_SIZE, &Count);
if (Status != ESUCCESS) {
BlClose(BootFileId);
BlPrint(BlFindMessage(BL_READ_ERROR),Status);
BootFile[0] = '\0';
FileSize = 0;
Count = 0;
goto BootFailed;
}
FileSize += Count;
} while (Count != 0);
if (FileSize >= SECTOR_SIZE) {
//
// We need to allocate a bigger buffer, since the boot.ini file
// is bigger than one sector.
//
BootFile=FwAllocateHeap(FileSize);
}
if (BootFile == NULL) {
BlPrint(BlFindMessage(BL_READ_ERROR),ENOMEM);
BootFile = MyBuffer;
BootFile[0] = '\0';
goto BootFailed;
} else {
SeekPosition.QuadPart = 0;
Status = BlSeek(BootFileId,
&SeekPosition,
SeekAbsolute);
if (Status != ESUCCESS) {
BlPrint(BlFindMessage(BL_READ_ERROR),Status);
BootFile = MyBuffer;
BootFile[0] = '\0';
goto BootFailed;
} else {
Status = BlRead( BootFileId,
BootFile,
FileSize,
&Read );
SeekPosition.QuadPart = 0;
Status = BlSeek(BootFileId,
&SeekPosition,
SeekAbsolute);
if (Status != ESUCCESS) {
BlPrint(BlFindMessage(BL_READ_ERROR),Status);
BootFile = MyBuffer;
BootFile[0] = '\0';
goto BootFailed;
} else {
BootFile[Read]='\0';
}
}
}
//
// Find Ctrl-Z, if it exists
//
p=BootFile;
while ((*p!='\0') && (*p!=26)) {
++p;
}
if (*p != '\0') {
*p='\0';
}
BlClose(BootFileId);
}
if (!AlreadyInitialized) {
AbiosInitDataStructures();
}
MdShutoffFloppy();
TextClearDisplay();
p=BlSelectKernel(DriveId,BootFile, &LoadOptions, UseTimeOut);
if (!AlreadyInitialized) {
BlPrint(BlFindMessage(BL_NTDETECT_MSG));
if (!BlDetectHardware(DriveId, LoadOptions)) {
BlPrint(BlFindMessage(BL_NTDETECT_FAILURE));
return;
}
TextClearDisplay();
//
// Initialize SCSI boot driver, if necessary.
//
if(!_strnicmp(p,"scsi(",5)) {
AEInitializeIo(DriveId);
}
ArcClose(DriveId);
//
// Indicate that fw memory descriptors cannot be changed from
// now on.
//
FwDescriptorsValid = FALSE;
} else {
TextClearDisplay();
}
//
// Set AlreadyInitialized Flag to TRUE to indicate that ntdetect
// and abios init routines have been run.
//
AlreadyInitialized = TRUE;
//
// Only time out the boot menu the first time through the boot.
// For all subsequent reboots, the menu will stay up.
//
UseTimeOut=FALSE;
i=0;
while (*p !='\\') {
KernelBootDevice[i] = *p;
i++;
p++;
}
KernelBootDevice[i] = '\0';
strcpy(OsLoadFilename,"osloadfilename=");
strcat(OsLoadFilename,p);
//
// We are fooling the OS Loader here. It only uses the osloader= variable
// to determine where to load HAL.DLL from. Since x86 systems have no
// "system partition" we want to load HAL.DLL from \nt\system\HAL.DLL.
// So we pass that it as the osloader path.
//
strcpy(OsLoaderFilename,"osloader=");
strcat(OsLoaderFilename,p);
strcat(OsLoaderFilename,"\\System32\\NTLDR");
strcpy(SystemPartition,"systempartition=");
strcat(SystemPartition,KernelBootDevice);
strcpy(OsLoadPartition,"osloadpartition=");
strcat(OsLoadPartition,KernelBootDevice);
strcpy(OsLoadOptions,"osloadoptions=");
if (LoadOptions) {
strcat(OsLoadOptions,LoadOptions);
}
strcpy(ConsoleInputName,"consolein=multi(0)key(0)keyboard(0)");
strcpy(ConsoleOutputName,"consoleout=multi(0)video(0)monitor(0)");
strcpy(X86SystemPartition,"x86systempartition=");
strcat(X86SystemPartition,PartitionName);
Argv[0]="load";
Argv[1]=OsLoaderFilename;
Argv[2]=SystemPartition;
Argv[3]=OsLoadFilename;
Argv[4]=OsLoadPartition;
Argv[5]=OsLoadOptions;
Argv[6]=ConsoleInputName;
Argv[7]=ConsoleOutputName;
Argv[8]=X86SystemPartition;
Status = BlOsLoader(9,Argv,NULL);
BootFailed:
if (Status != ESUCCESS) {
//
// Boot failed, wait for reboot
//
while (TRUE) {
GET_KEY();
}
} else {
//
// Need to reopen the drive
//
Status = ArcOpen(BootPartitionName, ArcOpenReadOnly, &DriveId);
if (Status != ESUCCESS) {
BlPrint(BlFindMessage(BL_DRIVE_ERROR),BootPartitionName);
goto BootFailed;
}
}
} while (TRUE);
}
|
