NetBSD/sys/arch/sparc/stand/boot.c

164 lines
4.5 KiB
C

/* $NetBSD: boot.c,v 1.11 1995/06/25 23:26:21 pk Exp $ */
/*-
* Copyright (c) 1982, 1986, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)boot.c 8.1 (Berkeley) 6/10/93
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <a.out.h>
#include "defs.h"
int debug;
int netif_debug;
/*
* Boot device is derived from ROM provided information.
*/
#define LOADADDR 0x4000
#define DEFAULT_KERNEL "netbsd"
extern char *version;
extern struct promvec *promvec;
char kernel[100];
unsigned long esym;
char *strtab;
int strtablen;
main(pp)
struct promvec *pp;
{
int io;
char *cp;
printf(">> NetBSD BOOT [%s]\n", version);
if (promvec->pv_romvec_vers >= 2)
cp = *promvec->pv_v2bootargs.v2_bootargs;
else
cp = (*promvec->pv_v0bootargs)->ba_kernel;
if (cp == 0 || *cp == 0) {
strcpy(kernel, DEFAULT_KERNEL);
} else {
char *kp = kernel;
while (*cp && *cp != '-')
*kp++ = *cp++;
while (kp > kernel && *--kp == ' ');
*++kp = '\0';
}
while ((io = open(kernel, 0)) < 0) {
printf("open: %s: %s\n", kernel, strerror(errno));
printf("boot: ");
gets(kernel);
}
printf("Booting %s @ 0x%x\n", kernel, LOADADDR);
copyunix(io, LOADADDR);
_rtt();
}
/*ARGSUSED*/
copyunix(io, addr)
register int io;
register char *addr;
{
struct exec x;
int i;
void (*entry)() = (void (*)())addr;
i = read(io, (char *)&x, sizeof(x));
if (i != sizeof(x) ||
N_BADMAG(x)) {
printf("%s: Bad format\n", kernel);
return;
}
printf("%d", x.a_text);
if (N_GETMAGIC(x) == ZMAGIC) {
entry = (void (*)())(addr+sizeof(struct exec));
addr += sizeof(struct exec);
}
if (read(io, (char *)addr, x.a_text) != x.a_text)
goto shread;
addr += x.a_text;
if (N_GETMAGIC(x) == ZMAGIC || N_GETMAGIC(x) == NMAGIC)
while ((int)addr & __LDPGSZ)
*addr++ = 0;
printf("+%d", x.a_data);
if (read(io, addr, x.a_data) != x.a_data)
goto shread;
addr += x.a_data;
printf("+%d", x.a_bss);
for (i = 0; i < x.a_bss; i++)
*addr++ = 0;
if (x.a_syms != 0) {
bcopy(&x.a_syms, addr, sizeof(x.a_syms));
addr += sizeof(x.a_syms);
printf("+[%d+", x.a_syms);
if (read(io, addr, x.a_syms) != x.a_syms)
goto shread;
addr += x.a_syms;
if (read(io, &strtablen, sizeof(int)) != sizeof(int))
goto shread;
bcopy(&strtablen, addr, sizeof(int));
if (i = strtablen) {
i -= sizeof(int);
addr += sizeof(int);
if (read(io, addr, i) != i)
goto shread;
addr += i;
}
printf("%d]", i);
esym = KERNBASE +
(((int)addr + sizeof(int) - 1) & ~(sizeof(int) - 1));
}
printf("=0x%x\n", addr);
#define DDB_MAGIC ( ('D'<<24) | ('D'<<16) | ('B'<<8) | ('0') )
/* Note: args 2-4 not used due to conflicts with SunOS loaders */
(*entry)(promvec, 0, 0, 0, esym, DDB_MAGIC);
return;
shread:
printf("Short read\n");
return;
}
_rtt()
{
promvec->pv_halt();
}