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

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Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
/*
* Mach Operating System
* Copyright (c) 1992, 1991 Carnegie Mellon University
* All Rights Reserved.
Remove trailing whitespace.
1995-05-30 08:16:23 +00:00
*
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
* 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.
Remove trailing whitespace.
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*
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
* 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.
Remove trailing whitespace.
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*
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
* Carnegie Mellon requests users of this software to return to
Remove trailing whitespace.
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*
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
Remove trailing whitespace.
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*
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
New boot blocks, from Bruce Evans, and NetBSD fixes. Allows kernel to be loaded above 1MB. Same boot code for floppies now. Speed improvements. etc etc etc. (I don't have much history on this, but then have been tested)
1993-07-13 18:15:32 +00:00
*
Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some minor cleanup. Added $Id$ to files that did not have any version info, etc
1993-10-16 19:17:18 +00:00
* from: Mach, Revision 2.2 92/04/04 11:35:03 rpd
Finally, implement a mini-parser for RockRidge alternative filenames, so the filenames can be displayed and selected in full beauty. If RR is present, the match is now case-sensitive, if RR is missing, the match is case-insensitive (as it used to be before).
1997-12-04 21:52:47 +00:00
* $Id: boot.h,v 1.22 1997/09/24 07:44:34 phk Exp $
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
*/
#include <sys/param.h>
Fixed bootblocks to work with FreeBSD 2.0 1) Fixed up some header locations 2) Replaced list of boot files with /kernel 3) Changed disklabel use in Makefile to conform to 4.4 4) Added size command in Makefile to get close estimate of bootblock sizes. Total size of text and data must be below 64K, slightly overestimated since a.out header subsequently gets stripped. 5) Various buffer sizes are set to 8192 bytes in sys.c. In 4.4 MAXBSIZE is set to 64K which is too big for the bootblocks to deal with. Submitted by: Paul Richards
1994-08-21 17:47:26 +00:00
#include <sys/time.h>
Removed declarations of recently deleted variables and cleaned up #includes.
1996-09-14 07:38:14 +00:00
Fixed bootblocks to work with FreeBSD 2.0 1) Fixed up some header locations 2) Replaced list of boot files with /kernel 3) Changed disklabel use in Makefile to conform to 4.4 4) Added size command in Makefile to get close estimate of bootblock sizes. Total size of text and data must be below 64K, slightly overestimated since a.out header subsequently gets stripped. 5) Various buffer sizes are set to 8192 bytes in sys.c. In 4.4 MAXBSIZE is set to 64K which is too big for the bootblocks to deal with. Submitted by: Paul Richards
1994-08-21 17:47:26 +00:00
#include <ufs/ffs/fs.h>
Removed declarations of recently deleted variables and cleaned up #includes.
1996-09-14 07:38:14 +00:00
#include <ufs/ufs/quota.h>
Fixed bootblocks to work with FreeBSD 2.0 1) Fixed up some header locations 2) Replaced list of boot files with /kernel 3) Changed disklabel use in Makefile to conform to 4.4 4) Added size command in Makefile to get close estimate of bootblock sizes. Total size of text and data must be below 64K, slightly overestimated since a.out header subsequently gets stripped. 5) Various buffer sizes are set to 8192 bytes in sys.c. In 4.4 MAXBSIZE is set to 64K which is too big for the bootblocks to deal with. Submitted by: Paul Richards
1994-08-21 17:47:26 +00:00
#include <ufs/ufs/inode.h>
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
- Added support for "dual" internal/serial consoles (-D flag). If -D is set, then all i/o from the boot blocks is to and from both the internal console and the serial console. -D has no effect on the kernel (-h decides the kernel serial console as usual). -D should normally be set in /boot.config. - Get help messages from /boot.help. You should copy boot.help from the biosboot directory to the root directory on the boot drive when you install new boot blocks. - New, less invasive keyboard probe. Enable keyboard probe dynamically (-P flag). Should probably never be used (use -h instead). - Fixed/improved initialization from boot.config. It didn't interact correctly with the NAMEBLOCK option, and the initialization of the drive/unit/partition didn't stick when a non-default kernel name was entered. - Don't reset or forget the default drive/unit/... or kernel name so often. - Set the default kernel name to something unbootable after `?'. - Display the defaults better. - Removed PROBE_KEYBOARD_LOCK option (use -h instead)., - Removed BOOT_FORCE_COMCONSOLE option (use device flag 0x20 instead). - Removed -a (RB_HALT) flag. This flag is only used for reboots. Submitted by: about 2/3 by yokota
1997-06-09 05:10:56 +00:00
#define RB_DUAL 0x40000 /* XXX */
#define RB_PROBEKBD 0x80000 /* XXX */
Removed declarations of recently deleted variables and cleaned up #includes.
1996-09-14 07:38:14 +00:00
extern char *devs[];
extern char *name;
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
extern struct fs *fs;
extern struct inode inode;
Removed declarations of recently deleted variables and cleaned up #includes.
1996-09-14 07:38:14 +00:00
extern int dosdev, unit, slice, part, maj, boff, poff;
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.
1995-01-25 21:40:47 +00:00
extern unsigned long tw_chars;
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
extern int loadflags;
extern struct disklabel disklabel;
/* asm.S */
#if ASM_ONLY
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void real_to_prot(void);
void prot_to_real(void);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
#endif
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void startprog(unsigned int physaddr, int howto, int bootdev,
/* XXX struct bootinfo * */ unsigned int bootinfo);
void pcpy(const void *src, void *dst, size_t count);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* bios.S */
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
int biosread(int dev, int cyl, int head, int sec, int nsec, void *offset);
void putc(int c);
int getc(void);
int ischar(void);
int get_diskinfo(int drive);
int memsize(int extended);
Add a missing prototype. Nagged about by: joerg
1997-09-24 07:44:34 +00:00
void vesa_mode(int mode);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* boot.c */
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void boot(int drive);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* boot2.S */
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void boot2(void);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* disk.c */
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
int devopen(void);
Rather than adding more gunk here, clean some of it up: devread() had a bogus interface, cleaned up. Bread() did an unneeded bcopy(), don't. Saves 80 bytes and some time.
1996-09-10 21:18:40 +00:00
void devread(char *iodest, int sector, int cnt);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* io.c */
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void gateA20(void);
Reset defaults in case of boot() is looping several times (e.g. the user has entered a bogus kernel name in the first place). Also fix the broken #ifdef FORCE_COMCONSOLE, it has been disabled by accident. (NB: the keyboard probe remains disabled however.) Few cosmetic fixes (declare functions to be void instead of int), while i've been at this. Pointed out by: wosch@cs.tu-berlin.de (Wolfram Schneider), for the init bug
1995-06-25 14:02:57 +00:00
void printf(const char *format, ...);
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void putchar(int c);
void delay1ms(void);
int gets(char *buf);
int strcmp(const char *s1, const char *s2);
Finally, implement a mini-parser for RockRidge alternative filenames, so the filenames can be displayed and selected in full beauty. If RR is present, the match is now case-sensitive, if RR is missing, the match is case-insensitive (as it used to be before).
1997-12-04 21:52:47 +00:00
#ifdef CDBOOT
int strcasecmp(const char *s1, const char *s2);
Make this compile again under -current. The modifications to io.c and bios.S were small enough and have been merged back into their respective files in biosboot/, conditionalized on CDBOOT. Other files might be merged at a later stage. Caveat emptor: i cannot test this right now.
1997-07-12 10:23:31 +00:00
#endif /* !CDBOOT */
void bcopy(const void *from, void *to, size_t len);
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void twiddle(void);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* probe_keyboard.c */
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
int probe_keyboard(void);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* serial.S */
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void serial_putc(int ch);
int serial_getc(void);
int serial_ischar(void);
void init_serial(void);
Boot block cleanup. o Fix the keyboard probe to properly wait for the ready bit before sending a command to the keyboard controller. This should avoid the problems some people are experiencing where the boot blocks hang the system during keyboard probe. (It does solve it for me.) o Fix a bug that effectively prevented the boot blocks from ever passing control to the serial console. [while(--retries) instead of while(retries--)] o Gratuitously reduced the keyboard probe timeout from 500 to 5 seconds. :) o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out example in the Makefile, to force the usage of a serial console regardless of a keyboard being connected or not. o Moved all external declarations to boot.h, declared all functions there, and ANSIfied all function declarations/definitions. (printf() remains bogus, however -- i'm too lazy to fix this.) We're in the ninetees, dunno why we should still support compilers from the 70's.
1995-04-14 21:26:53 +00:00
/* sys.c */
Reset defaults in case of boot() is looping several times (e.g. the user has entered a bogus kernel name in the first place). Also fix the broken #ifdef FORCE_COMCONSOLE, it has been disabled by accident. (NB: the keyboard probe remains disabled however.) Few cosmetic fixes (declare functions to be void instead of int), while i've been at this. Pointed out by: wosch@cs.tu-berlin.de (Wolfram Schneider), for the init bug
1995-06-25 14:02:57 +00:00
void xread(char *addr, int size);
Never pass char or short args to functions. This saves 64 bytes of recently introduced bloat in just 2 calls to biosread(), although very little in calls to putc() and serial_putc(). Gcc produces amazingly bad code for unnecessary conversions. E.g., if it has `int x' in register %edx and wants to pass a char, then it could simply push %edx and access only one byte in the callee. Instead, it sometimes unnecessarily spills %edx; it always sign extends %edx and pushes the result. Remove useless `extern' in function prototypes. Remove unused declaration of `end'. Declare pbzero() and pcpy() like the library bzero and bcopy(). Declare printf() properly.
1995-04-21 16:07:12 +00:00
void read(char *buffer, int count);
int openrd(void);
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