diff options
Diffstat (limited to 'sys/i386/boot/biosboot/boot.c')
| -rw-r--r-- | sys/i386/boot/biosboot/boot.c | 427 |
1 files changed, 0 insertions, 427 deletions
diff --git a/sys/i386/boot/biosboot/boot.c b/sys/i386/boot/biosboot/boot.c deleted file mode 100644 index bbd74977d7eb..000000000000 --- a/sys/i386/boot/biosboot/boot.c +++ /dev/null @@ -1,427 +0,0 @@ -/* - * 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, [92/04/03 16:51:14 rvb] - * $FreeBSD$ - */ - - -/* - Copyright 1988, 1989, 1990, 1991, 1992 - by Intel Corporation, Santa Clara, California. - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and -its documentation for any purpose and without fee is hereby -granted, provided that the above copyright notice appears in all -copies and that both the copyright notice and this permission notice -appear in supporting documentation, and that the name of Intel -not be used in advertising or publicity pertaining to distribution -of the software without specific, written prior permission. - -INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE -INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, -IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR -CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM -LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, -NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION -WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -*/ - -#include <sys/param.h> -#include "boot.h" -#include <a.out.h> -#include <sys/reboot.h> -#include <machine/bootinfo.h> - -#define ouraddr (BOOTSEG << 4) /* XXX */ - -#define BOOT_CONFIG_SIZE 512 -#define BOOT_HELP_SIZE 2048 -#define KERNEL_CONFIG_SIZE 512 -#define NAMEBUF_LEN 1024 /* oversized to defend against gets() */ - -static char boot_config[BOOT_CONFIG_SIZE]; -static char boot_help[BOOT_HELP_SIZE]; -#ifdef NAMEBLOCK -char *dflt_name; -#endif -char *name; -static char kernel_config[KERNEL_CONFIG_SIZE]; -static char kernel_config_namebuf[NAMEBUF_LEN + sizeof "config"]; -static char linebuf[NAMEBUF_LEN]; -static char namebuf[NAMEBUF_LEN]; -static struct bootinfo bootinfo; -int loadflags; - -static void getbootdev(char *ptr, int *howto); -static void loadprog(void); -static void readfile(char *path, char *buf, size_t nbytes); - -/* NORETURN */ -void -boot(int drive) -{ - int ret; - - /* Pick up the story from the Bios on geometry of disks */ - - for(ret = 0; ret < N_BIOS_GEOM; ret ++) - bootinfo.bi_bios_geom[ret] = get_diskinfo(ret + 0x80); - - bootinfo.bi_basemem = memsize(0); - bootinfo.bi_extmem = memsize(1); - bootinfo.bi_memsizes_valid = 1; - - gateA20(); - - /* - * The default boot device is the first partition in the - * compatibility slice on the boot drive. - */ - dosdev = drive; - maj = 2; - unit = drive & 0x7f; -#ifdef dontneed - slice = 0; - part = 0; -#endif - if (drive & 0x80) { - /* Hard drive. Adjust. */ - maj = 0; -#if BOOT_HD_BIAS > 0 - if (unit >= BOOT_HD_BIAS) { - /* - * The drive is probably a SCSI drive with a unit - * number BOOT_HD_BIAS less than the BIOS drive - * number. - */ - maj = 4; - unit -= BOOT_HD_BIAS; - } -#endif - } -#ifndef RAWBOOT - readfile("boot.config", boot_config, BOOT_CONFIG_SIZE); - readfile("boot.help", boot_help, BOOT_HELP_SIZE); -#endif -#ifdef NAMEBLOCK - /* - * XXX - * DAMN! I don't understand why this is not being set - * by the code in boot2.S - */ - dflt_name= (char *)0x0000ffb0; - if( (*dflt_name++ == 'D') && (*dflt_name++ == 'N')) { - name = dflt_name; - } else -#endif /*NAMEBLOCK*/ - name = "kernel"; - if (boot_config[0] != '\0') { - printf("boot.config: %s", boot_config); - getbootdev(boot_config, &loadflags); - if (openrd() != 0) - name = "kernel"; - } -loadstart: - /* print this all each time.. (saves space to do so) */ - /* If we have looped, use the previous entries as defaults */ - printf("\r \n>> FreeBSD BOOT @ 0x%x: %d/%d k of memory, %s%s console\n" - "Boot default: %d:%s(%d,%c)%s\n" - "%s\n" - "boot: ", - ouraddr, bootinfo.bi_basemem, bootinfo.bi_extmem, - (loadflags & RB_SERIAL) ? "serial" : "internal", - (loadflags & RB_DUAL) ? "/dual" : "", - dosdev & 0x7f, devs[maj], unit, 'a' + part, - name ? name : "*specify_a_kernel_name*", - boot_help); - - /* - * Ignore flags from previous attempted boot, if any. - * XXX this is now too strict. Settings given in boot.config should - * not be changed. - */ - loadflags &= (RB_DUAL | RB_SERIAL); - - /* - * Be paranoid and make doubly sure that the input buffer is empty. - */ - if (loadflags & (RB_DUAL | RB_SERIAL)) - init_serial(); - - if (!gets(linebuf)) - putchar('\n'); - else - getbootdev(linebuf, &loadflags); - if (name == NULL) - goto loadstart; - ret = openrd(); - if (ret != 0) { - if (ret > 0) - printf("Can't find %s\n", name); - goto loadstart; - } -/* if (inode.i_mode&IEXEC) - loadflags |= RB_KDB; -*/ - loadprog(); - goto loadstart; -} - -static void -loadprog(void) -{ - struct exec head; - int startaddr; - int addr; /* physical address.. not directly useable */ - int bootdev; - int i; - unsigned pad; - char *s, *t; - - read((void *)&head, sizeof(head)); - if ( N_BADMAG(head)) { - printf("Invalid format!\n"); - return; - } - - poff = N_TXTOFF(head); - /*if(poff==0) - poff = 32;*/ - - /* - * We assume that the entry address is the same as the lowest text - * address and that the kernel startup code handles relocation by - * this address rounded down to a multiple of 16M. - */ - startaddr = head.a_entry & 0x00FFFFFF; - addr = startaddr; - printf("Booting %d:%s(%d,%c)%s @ 0x%x\n" - , dosdev & 0x7f - , devs[maj] - , unit - , 'a'+part - , name - , addr); - if(addr < 0x00100000) - { - /* - * Bail out, instead of risking to damage the BIOS - * variables, the loader, or the adapter memory area. - * We don't support loading below 1 MB any more. - */ - printf("Start address too low\n"); - return; - } - printf("text=0x%x ", head.a_text); - /********************************************************/ - /* LOAD THE TEXT SEGMENT */ - /********************************************************/ - xread((void *)addr, head.a_text); - addr += head.a_text; - - /********************************************************/ - /* Load the Initialised data after the text */ - /********************************************************/ - while (addr & PAGE_MASK) - *(char *)addr++ = 0; - - printf("data=0x%x ", head.a_data); - xread((void *)addr, head.a_data); - addr += head.a_data; - - /********************************************************/ - /* Skip over the uninitialised data */ - /* (but clear it) */ - /********************************************************/ - printf("bss=0x%x ", head.a_bss); - -/* - * XXX however, we should be checking that we don't load ... into - * nonexistent memory. A full symbol table is unlikely to fit on 4MB - * machines. - */ - /* kzip & kernel will zero their own bss */ - addr += head.a_bss; - - /* Pad to a page boundary. */ - pad = (unsigned)addr & PAGE_MASK; - if (pad != 0) { - pad = PAGE_SIZE - pad; - addr += pad; - } - bootinfo.bi_symtab = addr; - - /********************************************************/ - /* Copy the symbol table size */ - /********************************************************/ - pcpy(&head.a_syms, (void *)addr, sizeof(head.a_syms)); - addr += sizeof(head.a_syms); - - /********************************************************/ - /* Load the symbol table */ - /********************************************************/ - printf("symbols=[+0x%x+0x%x+0x%x", pad, sizeof(head.a_syms), - head.a_syms); - xread((void *)addr, head.a_syms); - addr += head.a_syms; - - /********************************************************/ - /* Load the string table size */ - /********************************************************/ - read((void *)&i, sizeof(int)); - pcpy(&i, (void *)addr, sizeof(int)); - i -= sizeof(int); - addr += sizeof(int); - - /********************************************************/ - /* Load the string table */ - /********************************************************/ - printf("+0x%x+0x%x]\n", sizeof(int), i); - xread((void *)addr, i); - addr += i; - - bootinfo.bi_esymtab = addr; - - /* - * For backwards compatibility, use the previously-unused adaptor - * and controller bitfields to hold the slice number. - */ - bootdev = MAKEBOOTDEV(maj, (slice >> 4), slice & 0xf, unit, part); - - bootinfo.bi_version = BOOTINFO_VERSION; - bootinfo.bi_kernelname = (u_int32_t)(name + ouraddr); - bootinfo.bi_nfs_diskless = 0; - bootinfo.bi_size = sizeof(bootinfo); - bootinfo.bi_bios_dev = dosdev; - - /* - * Load the kernel config file (if any). Its name is given by - * appending ".config" to the kernel name. Build the name inline - * because no str*() functions are available. The file has to be - * copied to &disklabel for userconfig. It can't be loaded there - * directly because the label is used late in readfile() in some - * unusual cases. - */ - s = name; - t = kernel_config_namebuf; - do - ; - while ((*t++ = *s++) != '\0'); - s = ".config"; - --t; - do - ; - while ((*t++ = *s++) != '\0'); - readfile(kernel_config_namebuf, kernel_config, KERNEL_CONFIG_SIZE); - pcpy(kernel_config, (char *)&disklabel + ouraddr, KERNEL_CONFIG_SIZE); - - printf("total=0x%x entry point=0x%x\n", addr, startaddr); - startprog(startaddr, loadflags | RB_BOOTINFO, bootdev, - (unsigned)&bootinfo + ouraddr); -} - -static void -readfile(char *path, char *buf, size_t nbytes) -{ - int openstatus; - - buf[0] = '\0'; - name = path; - openstatus = openrd(); - if (openstatus != 0) { - if (openstatus > 0) - printf("Can't find file %s\n", name); - } else { - /* XXX no way to determine file size. */ - read(buf, nbytes); - } - buf[nbytes - 1] = '\0'; -} - -static void -getbootdev(char *ptr, int *howto) -{ - char c; - int f; - char *p; - - /* Copy the flags to save some bytes. */ - f = *howto; - - c = *ptr; - for (;;) { -nextarg: - while (c == ' ' || c == '\n') - c = *++ptr; - if (c == '-') - while ((c = *++ptr) != '\0') { - if (c == ' ' || c == '\n') - goto nextarg; - if (c == 'a') - f |= RB_ASKNAME; - if (c == 'C') - f |= RB_CDROM; - if (c == 'c') - f |= RB_CONFIG; - if (c == 'D') - f ^= RB_DUAL; - if (c == 'd') - f |= RB_KDB; - if (c == 'g') - f |= RB_GDB; - if (c == 'h') - f ^= RB_SERIAL; - if (c == 'P') - f |= RB_PROBEKBD; - if (c == 'r') - f |= RB_DFLTROOT; - if (c == 's') - f |= RB_SINGLE; - if (c == 'v') - f |= RB_VERBOSE; - } - if (c == '\0') - break; - p = name = namebuf; - while (c != '\0' && c != ' ' && c != '\n') { - *p++ = c; - c = *++ptr; - } - *p = '\0'; - } - if (f & RB_PROBEKBD) { - if (probe_keyboard()) { - f |= RB_DUAL | RB_SERIAL; - printf("No keyboard found\n"); - } else - printf("Keyboard found\n"); - } - if (f & (RB_DUAL | RB_SERIAL)) - init_serial(); - *howto = f; -} |