mirror of
https://github.com/reactos/reactos.git
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939d5316af
- SetupLdr loads and uses txtsetup.sif - Removed .hiv (text-hive) parser svn path=/trunk/; revision=4758
231 lines
6.1 KiB
C
231 lines
6.1 KiB
C
/*
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* FreeLoader
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* Copyright (C) 1998-2003 Brian Palmer <brianp@sginet.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <freeldr.h>
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#include <arch.h>
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#include <miscboot.h>
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#include <rtl.h>
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#include <fs.h>
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#include <ui.h>
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#include <inifile.h>
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#include <disk.h>
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#include <drivemap.h>
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VOID LoadAndBootBootSector(PUCHAR OperatingSystemName)
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{
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PFILE FilePointer;
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UCHAR SettingName[80];
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UCHAR SettingValue[80];
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U32 SectionId;
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UCHAR FileName[260];
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U32 BytesRead;
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// Find all the message box settings and run them
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UiShowMessageBoxesInSection(OperatingSystemName);
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// Try to open the operating system section in the .ini file
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if (!IniOpenSection(OperatingSystemName, &SectionId))
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{
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sprintf(SettingName, "Section [%s] not found in freeldr.ini.\n", OperatingSystemName);
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UiMessageBox(SettingName);
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return;
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}
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if (!IniReadSettingByName(SectionId, "BootDrive", SettingValue, 80))
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{
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UiMessageBox("Boot drive not specified for selected OS!");
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return;
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}
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BootDrive = DriveMapGetBiosDriveNumber(SettingValue);
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BootPartition = 0;
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if (IniReadSettingByName(SectionId, "BootPartition", SettingValue, 80))
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{
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BootPartition = atoi(SettingValue);
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}
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if (!IniReadSettingByName(SectionId, "BootSectorFile", FileName, 260))
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{
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UiMessageBox("Boot sector file not specified for selected OS!");
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return;
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}
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if (!FsOpenVolume(BootDrive, BootPartition))
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{
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UiMessageBox("Failed to open boot drive.");
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return;
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}
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FilePointer = FsOpenFile(FileName);
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if (FilePointer == NULL)
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{
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strcat(FileName, " not found.");
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UiMessageBox(FileName);
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return;
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}
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// Read boot sector
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if (!FsReadFile(FilePointer, 512, &BytesRead, (void*)0x7c00) || (BytesRead != 512))
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{
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return;
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}
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// Check for validity
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if (*((U16*)(0x7c00 + 0x1fe)) != 0xaa55)
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{
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UiMessageBox("Invalid boot sector magic (0xaa55)");
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return;
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}
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UiUnInitialize("Booting...");
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// Don't stop the floppy drive motor when we
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// are just booting a bootsector, or drive, or partition.
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// If we were to stop the floppy motor then
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// the BIOS wouldn't be informed and if the
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// next read is to a floppy then the BIOS will
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// still think the motor is on and this will
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// result in a read error.
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//DiskStopFloppyMotor();
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//DisableA20();
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ChainLoadBiosBootSectorCode();
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}
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VOID LoadAndBootPartition(PUCHAR OperatingSystemName)
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{
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UCHAR SettingName[80];
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UCHAR SettingValue[80];
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U32 SectionId;
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PARTITION_TABLE_ENTRY PartitionTableEntry;
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// Find all the message box settings and run them
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UiShowMessageBoxesInSection(OperatingSystemName);
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// Try to open the operating system section in the .ini file
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if (!IniOpenSection(OperatingSystemName, &SectionId))
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{
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sprintf(SettingName, "Section [%s] not found in freeldr.ini.\n", OperatingSystemName);
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UiMessageBox(SettingName);
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return;
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}
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// Read the boot drive
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if (!IniReadSettingByName(SectionId, "BootDrive", SettingValue, 80))
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{
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UiMessageBox("Boot drive not specified for selected OS!");
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return;
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}
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BootDrive = DriveMapGetBiosDriveNumber(SettingValue);
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// Read the boot partition
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if (!IniReadSettingByName(SectionId, "BootPartition", SettingValue, 80))
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{
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UiMessageBox("Boot partition not specified for selected OS!");
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return;
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}
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BootPartition = atoi(SettingValue);
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// Get the partition table entry
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if (!DiskGetPartitionEntry(BootDrive, BootPartition, &PartitionTableEntry))
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{
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return;
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}
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// Now try to read the partition boot sector
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// If this fails then abort
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if (!DiskReadLogicalSectors(BootDrive, PartitionTableEntry.SectorCountBeforePartition, 1, (PVOID)0x7C00))
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{
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return;
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}
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// Check for validity
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if (*((U16*)(0x7c00 + 0x1fe)) != 0xaa55)
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{
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UiMessageBox("Invalid boot sector magic (0xaa55)");
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return;
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}
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UiUnInitialize("Booting...");
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// Don't stop the floppy drive motor when we
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// are just booting a bootsector, or drive, or partition.
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// If we were to stop the floppy motor then
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// the BIOS wouldn't be informed and if the
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// next read is to a floppy then the BIOS will
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// still think the motor is on and this will
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// result in a read error.
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//DiskStopFloppyMotor();
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//DisableA20();
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ChainLoadBiosBootSectorCode();
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}
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VOID LoadAndBootDrive(PUCHAR OperatingSystemName)
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{
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UCHAR SettingName[80];
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UCHAR SettingValue[80];
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U32 SectionId;
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// Find all the message box settings and run them
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UiShowMessageBoxesInSection(OperatingSystemName);
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// Try to open the operating system section in the .ini file
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if (!IniOpenSection(OperatingSystemName, &SectionId))
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{
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sprintf(SettingName, "Section [%s] not found in freeldr.ini.\n", OperatingSystemName);
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UiMessageBox(SettingName);
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return;
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}
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if (!IniReadSettingByName(SectionId, "BootDrive", SettingValue, 80))
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{
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UiMessageBox("Boot drive not specified for selected OS!");
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return;
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}
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BootDrive = DriveMapGetBiosDriveNumber(SettingValue);
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// Now try to read the boot sector (or mbr)
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// If this fails then abort
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if (!DiskReadLogicalSectors(BootDrive, 0, 1, (PVOID)0x7C00))
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{
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return;
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}
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// Check for validity
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if (*((U16*)(0x7c00 + 0x1fe)) != 0xaa55)
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{
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UiMessageBox("Invalid boot sector magic (0xaa55)");
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return;
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}
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UiUnInitialize("Booting...");
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// Don't stop the floppy drive motor when we
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// are just booting a bootsector, or drive, or partition.
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// If we were to stop the floppy motor then
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// the BIOS wouldn't be informed and if the
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// next read is to a floppy then the BIOS will
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// still think the motor is on and this will
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// result in a read error.
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//DiskStopFloppyMotor();
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//DisableA20();
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ChainLoadBiosBootSectorCode();
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}
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