mirror of
https://github.com/ApfelTeeSaft/reactos.git
synced 2026-08-29 04:13:32 +00:00
Aleksey Bragin
2db25525a7
Base is FreeLdr from trunk r25063. svn path=/branches/winldr/; revision=25066
140 lines
4.4 KiB
C
140 lines
4.4 KiB
C
/*
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* FreeLoader
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* Copyright (C) 1998-2003 Brian Palmer <[email protected]>
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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 <fs.h>
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#ifndef __LINUX_H
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#define __LINUX_H
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#define LINUX_LOADER_TYPE_LILO 0x01
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#define LINUX_LOADER_TYPE_LOADLIN 0x11
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#define LINUX_LOADER_TYPE_BOOTSECT 0x21
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#define LINUX_LOADER_TYPE_SYSLINUX 0x31
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#define LINUX_LOADER_TYPE_ETHERBOOT 0x41
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#define LINUX_LOADER_TYPE_FREELOADER 0x81
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#define LINUX_COMMAND_LINE_MAGIC 0xA33F
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#define LINUX_SETUP_HEADER_ID 0x53726448 // 'HdrS'
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#define LINUX_BOOT_SECTOR_MAGIC 0xAA55
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#define LINUX_KERNEL_LOAD_ADDRESS 0x100000
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#define LINUX_FLAG_LOAD_HIGH 0x01
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#define LINUX_FLAG_CAN_USE_HEAP 0x80
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#define LINUX_MAX_INITRD_ADDRESS 0x38000000
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typedef struct
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{
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UCHAR BootCode1[0x20];
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USHORT CommandLineMagic;
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USHORT CommandLineOffset;
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UCHAR BootCode2[0x1CD];
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UCHAR SetupSectors;
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USHORT RootFlags;
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USHORT SystemSize;
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USHORT SwapDevice;
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USHORT RamSize;
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USHORT VideoMode;
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USHORT RootDevice;
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USHORT BootFlag; // 0xAA55
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} PACKED LINUX_BOOTSECTOR, *PLINUX_BOOTSECTOR;
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typedef struct
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{
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UCHAR JumpInstruction[2];
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ULONG SetupHeaderSignature; // Signature for SETUP-header
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USHORT Version; // Version number of header format
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USHORT RealModeSwitch; // Default switch
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USHORT SetupSeg; // SETUPSEG
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USHORT StartSystemSeg;
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USHORT KernelVersion; // Offset to kernel version string
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UCHAR TypeOfLoader; // Loader ID
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// =0, old one (LILO, Loadlin,
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// Bootlin, SYSLX, bootsect...)
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// else it is set by the loader:
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// 0xTV: T=0 for LILO
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// T=1 for Loadlin
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// T=2 for bootsect-loader
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// T=3 for SYSLX
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// T=4 for ETHERBOOT
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// V = version
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UCHAR LoadFlags; // flags, unused bits must be zero (RFU)
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// LOADED_HIGH = 1
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// bit within loadflags,
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// if set, then the kernel is loaded high
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// CAN_USE_HEAP = 0x80
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// if set, the loader also has set heap_end_ptr
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// to tell how much space behind setup.S
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// can be used for heap purposes.
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// Only the loader knows what is free!
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USHORT SetupMoveSize; // size to move, when we (setup) are not
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// loaded at 0x90000. We will move ourselves
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// to 0x90000 then just before jumping into
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// the kernel. However, only the loader
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// know how much of data behind us also needs
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// to be loaded.
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ULONG Code32Start; // here loaders can put a different
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// start address for 32-bit code.
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//
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// 0x1000 = default for zImage
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//
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// 0x100000 = default for big kernel
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ULONG RamdiskAddress; // address of loaded ramdisk image
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// Here the loader (or kernel generator) puts
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// the 32-bit address were it loaded the image.
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ULONG RamdiskSize; // its size in bytes
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USHORT BootSectKludgeOffset;
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USHORT BootSectKludgeSegment;
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USHORT HeapEnd; // space from here (exclusive) down to
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// end of setup code can be used by setup
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// for local heap purposes.
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USHORT Pad1;
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ULONG CommandLinePointer; // 32-bit pointer to the kernel command line
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ULONG InitrdAddressMax; // Highest legal initrd address
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} PACKED LINUX_SETUPSECTOR, *PLINUX_SETUPSECTOR;
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VOID BootNewLinuxKernel(VOID); // Implemented in linux.S
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VOID BootOldLinuxKernel(ULONG KernelSize); // Implemented in linux.S
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VOID LoadAndBootLinux(PCSTR OperatingSystemName, PCSTR Description);
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BOOLEAN LinuxParseIniSection(PCSTR OperatingSystemName);
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BOOLEAN LinuxReadBootSector(PFILE LinuxKernelFile);
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BOOLEAN LinuxReadSetupSector(PFILE LinuxKernelFile);
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BOOLEAN LinuxReadKernel(PFILE LinuxKernelFile);
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BOOLEAN LinuxCheckKernelVersion(VOID);
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BOOLEAN LinuxReadInitrd(PFILE LinuxInitrdFile);
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#endif // defined __LINUX_H
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