freebsd-dev/sys/i386/boot/biosboot/boot.h

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1993-06-12 14:58:17 +00:00
/*
* Mach Operating System
* Copyright (c) 1992, 1991 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*
* from: Mach, Revision 2.2 92/04/04 11:35:03 rpd
* $Id: boot.h,v 1.6 1995/01/25 21:37:39 bde Exp $
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*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <ufs/ufs/quota.h>
#include <ufs/ffs/fs.h>
#include <ufs/ufs/inode.h>
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extern char *devs[], *name, *iodest;
extern struct fs *fs;
extern struct inode inode;
extern int dosdev, unit, slice, part, maj, boff, poff, bnum, cnt;
Load the kernel symbol table in the boot loader and not at compile time. (Boot with the -D flag if you want symbols.) Make it easier to extend `struct bootinfo' without losing either forwards or backwards compatibility. ddb_aout.c: Get the symbol table from wherever the loader put it. Nuke db_symtab[SYMTAB_SPACE]. boot.c: Enable loading of symbols. Align them on a page boundary. Add printfs about the symbol table sizes. Pass the memory sizes to the kernel. Fix initialization of `unit' (it got moved out of the loop). Fix adding the bss size (it got moved inside an ifdef). Initialize serial port when RB_SERIAL is toggled on. Fix comments. Clean up formatting of recently added code. io.c: Clean up formatting of recently added code. netboot/main.c, machdep.c, wd.c: Change names of bootinfo fields. LINT: Nuke SYMTAB_SPACE. Fix comment about DODUMP. Makefile.i386: Nuke use of dbsym. Exclude gcc symbols from kernel unless compiling with -g. Remove unused macro. Fix comments and formatting. genassym.c: Generate defines for some new bootinfo fields. Change names of old ones. locore.s: Copy only the valid part of the `struct bootinfo' passed by the loader. Reserve space for symbol table, if any. machdep.c: Check the memory sizes passed by the loader, if any. Don't use them yet. bootinfo.h: Add a size field so that we can resolve some mismatches between the loader bootinfo and the kernel boot info. The version number is not so good for this because of historical botches and because it's harder to maintain. Add memory size and symbol table fields. Change the names of everything. Hacks to save a few bytes: asm.S, boot.c, boot2.S: Replace `ouraddr' by `(BOOTSEG << 4)'. boot.c: Don't statically initialize `loadflags' to 0. Disable the "REDUNDANT" code that skips the BIOS variables. Eliminate `total'. Combine some more printfs. boot.h, disk.c, io.c, table.c: Move all statically initialzed data to table.c. io.c: Don't put the A20 gate bits in a variable.
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extern unsigned long tw_chars;
extern int loadflags;
extern int end;
extern struct disklabel disklabel;
/* asm.S */
#if ASM_ONLY
extern void real_to_prot(void);
extern void prot_to_real(void);
#endif
extern void startprog(unsigned int physaddr, int howto, int bootdev,
/* struct bootinfo * */ unsigned int bootinfo);
extern void pbzero(unsigned char *dst, unsigned int count);
extern void pcpy(const unsigned char *src, unsigned char *dst,
unsigned int count);
/* bios.S */
extern int biosread(unsigned char dev, unsigned short cyl, unsigned char head,
unsigned char sec, unsigned char nsec,
unsigned char *offset);
extern void putc(char c);
extern int getc(void);
extern int ischar(void);
extern int get_diskinfo(int drive);
extern int memsize(int extended);
/* boot.c */
extern void boot(int drive);
extern void loadprog(int howto);
extern void getbootdev(int *howto);
/* boot2.S */
extern void boot2(void);
/* disk.c */
extern int devopen(void);
extern void devread(void);
extern void Bread(int dosdev, int sector);
extern int badsect(int dosdev, int sector);
/* io.c */
extern void gateA20(void);
extern printf(const char *format, ...);
extern void putchar(int c);
extern int getchar(int in_buf);
extern void delay1ms(void);
extern int gets(char *buf);
extern int strcmp(const char *s1, const char *s2);
extern void bcopy(const char *from, char *to, int len);
extern void twiddle(void);
/* probe_keyboard.c */
extern int probe_keyboard(void);
/* serial.S */
extern void serial_putc(char ch);
extern int serial_getc(void);
extern int serial_ischar(void);
extern void init_serial(void);
/* sys.c */
extern int xread(char *addr, int size);
extern void read(char *buffer, int count);
extern int find(char *path);
extern int block_map(int file_block);
extern int openrd(void);