VOID
LoadAndBootDrive(IN OperatingSystemItem* OperatingSystem,
IN USHORT OperatingSystemVersion)
{
ULONG_PTR SectionId;
PCSTR SectionName = OperatingSystem->SystemPartition;
CHAR SettingName[80];
CHAR SettingValue[80];
UCHAR DriveNumber;
// Find all the message box settings and run them
UiShowMessageBoxesInSection(SectionName);
// Try to open the operating system section in the .ini file
if (!IniOpenSection(SectionName, &SectionId))
{
sprintf(SettingName, "Section [%s] not found in freeldr.ini.\n", SectionName);
UiMessageBox(SettingName);
return;
}
if (!IniReadSettingByName(SectionId, "BootDrive", SettingValue, sizeof(SettingValue)))
{
UiMessageBox("Boot drive not specified for selected OS!");
return;
}
DriveNumber = DriveMapGetBiosDriveNumber(SettingValue);
// Now try to read the boot sector (or mbr)
// If this fails then abort
if (!MachDiskReadLogicalSectors(DriveNumber, 0, 1, (PVOID)0x7C00))
{
UiMessageBox("Unable to read boot sector");
return;
}
// Check for validity
if (*((USHORT*)(0x7c00 + 0x1fe)) != 0xaa55)
{
UiMessageBox("Invalid boot sector magic (0xaa55)");
return;
}
UiUnInitialize("Booting...");
// Don't stop the floppy drive motor when we
// are just booting a bootsector, or drive, or partition.
// If we were to stop the floppy motor then
// the BIOS wouldn't be informed and if the
// next read is to a floppy then the BIOS will
// still think the motor is on and this will
// result in a read error.
//DiskStopFloppyMotor();
//DisableA20();
ChainLoadBiosBootSectorCode();
}
VOID RunLoader(VOID)
{
ULONG_PTR SectionId;
ULONG OperatingSystemCount;
OperatingSystemItem* OperatingSystemList;
PCSTR* OperatingSystemDisplayNames;
ULONG DefaultOperatingSystem;
LONG TimeOut;
ULONG SelectedOperatingSystem;
ULONG i;
if (!MachInitializeBootDevices())
{
UiMessageBoxCritical("Error when detecting hardware.");
return;
}
#ifdef _M_IX86
/* Load additional SCSI driver (if any) */
if (LoadBootDeviceDriver() != ESUCCESS)
{
UiMessageBoxCritical("Unable to load additional boot device drivers.");
}
#endif
if (!IniFileInitialize())
{
UiMessageBoxCritical("Error initializing .ini file.");
return;
}
/* Debugger main initialization */
DebugInit(TRUE);
if (!IniOpenSection("FreeLoader", &SectionId))
{
UiMessageBoxCritical("Section [FreeLoader] not found in freeldr.ini.");
return;
}
TimeOut = GetTimeOut();
/* UI main initialization */
if (!UiInitialize(TRUE))
{
UiMessageBoxCritical("Unable to initialize UI.");
return;
}
OperatingSystemList = InitOperatingSystemList(&OperatingSystemCount);
if (!OperatingSystemList)
{
UiMessageBox("Unable to read operating systems section in freeldr.ini.\nPress ENTER to reboot.");
goto Reboot;
}
if (OperatingSystemCount == 0)
{
UiMessageBox("There were no operating systems listed in freeldr.ini.\nPress ENTER to reboot.");
goto Reboot;
}
DefaultOperatingSystem = GetDefaultOperatingSystem(OperatingSystemList, OperatingSystemCount);
/* Create list of display names */
OperatingSystemDisplayNames = FrLdrTempAlloc(sizeof(PCSTR) * OperatingSystemCount, 'mNSO');
if (!OperatingSystemDisplayNames)
goto Reboot;
for (i = 0; i < OperatingSystemCount; i++)
{
OperatingSystemDisplayNames[i] = OperatingSystemList[i].LoadIdentifier;
}
/* Find all the message box settings and run them */
UiShowMessageBoxesInSection("FreeLoader");
for (;;)
{
/* Redraw the backdrop */
UiDrawBackdrop();
/* Show the operating system list menu */
if (!UiDisplayMenu("Please select the operating system to start:",
"For troubleshooting and advanced startup options for "
"ReactOS, press F8.",
TRUE,
OperatingSystemDisplayNames,
OperatingSystemCount,
DefaultOperatingSystem,
TimeOut,
&SelectedOperatingSystem,
FALSE,
MainBootMenuKeyPressFilter))
{
UiMessageBox("Press ENTER to reboot.");
goto Reboot;
}
TimeOut = -1;
/* Load the chosen operating system */
LoadOperatingSystem(&OperatingSystemList[SelectedOperatingSystem]);
}
Reboot:
UiUnInitialize("Rebooting...");
return;
}
VOID
LoadAndBootBootSector(IN OperatingSystemItem* OperatingSystem,
IN USHORT OperatingSystemVersion)
{
ULONG_PTR SectionId;
PCSTR SectionName = OperatingSystem->SystemPartition;
CHAR FileName[260];
PFILE FilePointer;
ULONG BytesRead;
CHAR SettingName[80];
// Find all the message box settings and run them
UiShowMessageBoxesInSection(SectionName);
// Try to open the operating system section in the .ini file
if (!IniOpenSection(SectionName, &SectionId))
{
sprintf(SettingName, "Section [%s] not found in freeldr.ini.\n", SectionName);
UiMessageBox(SettingName);
return;
}
if (!IniReadSettingByName(SectionId, "BootSectorFile", FileName, sizeof(FileName)))
{
UiMessageBox("Boot sector file not specified for selected OS!");
return;
}
FilePointer = FsOpenFile(FileName);
if (!FilePointer)
{
strcat(FileName, " not found.");
UiMessageBox(FileName);
return;
}
// Read boot sector
if (!FsReadFile(FilePointer, 512, &BytesRead, (void*)0x7c00) || (BytesRead != 512))
{
UiMessageBox("Unable to read boot sector.");
return;
}
// Check for validity
if (*((USHORT*)(0x7c00 + 0x1fe)) != 0xaa55)
{
UiMessageBox("Invalid boot sector magic (0xaa55)");
return;
}
UiUnInitialize("Booting...");
// Don't stop the floppy drive motor when we
// are just booting a bootsector, or drive, or partition.
// If we were to stop the floppy motor then
// the BIOS wouldn't be informed and if the
// next read is to a floppy then the BIOS will
// still think the motor is on and this will
// result in a read error.
//DiskStopFloppyMotor();
//DisableA20();
ChainLoadBiosBootSectorCode();
}