156 lines
4.3 KiB
C
156 lines
4.3 KiB
C
/* $NetBSD: bootxx.c,v 1.6 2000/12/04 18:44:51 scw Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Paul Kranenburg.
|
|
*
|
|
* 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 NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*
|
|
* This is a generic "first-stage" boot program.
|
|
*
|
|
* Note that this program has absolutely no filesystem knowledge!
|
|
*
|
|
* Instead, this uses a table of disk block numbers that are
|
|
* filled in by the installboot program such that this program
|
|
* can load the "second-stage" boot program.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/exec_elf.h>
|
|
#include <machine/prom.h>
|
|
|
|
#include "stand.h"
|
|
#include "libsa.h"
|
|
#include "bootxx.h"
|
|
|
|
int copyboot __P((struct open_file *, u_long *));
|
|
void main __P((void));
|
|
|
|
/*
|
|
* Boot device is derived from ROM provided information.
|
|
*/
|
|
#define LOADADDR 0x11000 /* where to load level 2 bootstrap */
|
|
/* (l2 must relocate itself) */
|
|
|
|
extern int block_size;
|
|
extern int block_count; /* length of table */
|
|
extern daddr_t block_table[];
|
|
|
|
extern char bootprog_name[], bootprog_rev[];
|
|
|
|
void
|
|
main()
|
|
{
|
|
struct open_file f;
|
|
u_long addr;
|
|
char *foo;
|
|
int error;
|
|
|
|
printf("Boot: bug device: ctrl=%d, dev=%d\n",
|
|
bugargs.ctrl_lun, bugargs.dev_lun);
|
|
printf("\nbootxx: %s first level bootstrap program [%s]\n\n",
|
|
bootprog_name, bootprog_rev);
|
|
|
|
f.f_flags = F_RAW;
|
|
if (devopen(&f, 0, &foo)) {
|
|
printf("bootxx: open failed\n");
|
|
_rtt();
|
|
}
|
|
|
|
addr = LOADADDR;
|
|
error = copyboot(&f, &addr);
|
|
f.f_dev->dv_close(&f);
|
|
if (!error)
|
|
bugexec((void *)addr);
|
|
|
|
/* copyboot had a problem... */
|
|
_rtt();
|
|
}
|
|
|
|
int
|
|
copyboot(fp, addr)
|
|
struct open_file *fp;
|
|
u_long *addr;
|
|
{
|
|
int n, i, blknum;
|
|
char *laddr = (char *) *addr;
|
|
union boothead {
|
|
struct exec ah;
|
|
Elf32_Ehdr eh;
|
|
} *x;
|
|
|
|
x = (union boothead *)laddr;
|
|
|
|
if (!block_count) {
|
|
printf("bootxx: no data!?!\n");
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < block_count; i++) {
|
|
|
|
if ((blknum = block_table[i]) == 0)
|
|
break;
|
|
|
|
#ifdef DEBUG
|
|
printf("bootxx: read block # %d = %d\n", i, blknum);
|
|
#endif
|
|
if ((fp->f_dev->dv_strategy)(fp->f_devdata, F_READ,
|
|
blknum, block_size, laddr, &n))
|
|
{
|
|
printf("bootxx: read failed\n");
|
|
return -1;
|
|
}
|
|
if (n != block_size) {
|
|
printf("bootxx: short read\n");
|
|
return -1;
|
|
}
|
|
laddr += block_size;
|
|
}
|
|
|
|
if (N_GETMAGIC(x->ah) == OMAGIC)
|
|
*addr += sizeof(x->ah);
|
|
else
|
|
if (memcmp(x->eh.e_ident, ELFMAG, SELFMAG) == 0) {
|
|
Elf32_Phdr *ep = (Elf32_Phdr *)(*addr + x->eh.e_phoff);
|
|
*addr += ep->p_offset;
|
|
} else {
|
|
printf("bootxx: secondary bootstrap isn't an executable\n");
|
|
return(-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|