143 lines
4.0 KiB
C
143 lines
4.0 KiB
C
/* $NetBSD: bootxx.c,v 1.1 1996/05/17 20:11:32 chuck Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Paul Kranenburg
|
|
* 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 Paul Kranenburg.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <machine/prom.h>
|
|
|
|
#include "stand.h"
|
|
#include "libsa.h"
|
|
|
|
/*
|
|
* Boot device is derived from ROM provided information.
|
|
*/
|
|
#define LOADADDR 0x11000 /* where to load level 2 bootstrap */
|
|
/* (l2 must relocate itself) */
|
|
|
|
/* This determines the largest boot program we can load. */
|
|
#define MAXBLOCKNUM 64
|
|
|
|
/*
|
|
* These three names are known by installboot.
|
|
* The block_table contains starting block numbers,
|
|
* in terms of 512-byte blocks. Each non-zero value
|
|
* will result in a read of block_size bytes.
|
|
*/
|
|
int block_size = 512; /* default */
|
|
int block_count = MAXBLOCKNUM; /* length of table */
|
|
daddr_t block_table[MAXBLOCKNUM] = { 0 };
|
|
|
|
extern char *version;
|
|
|
|
|
|
main()
|
|
{
|
|
struct open_file f;
|
|
char *addr;
|
|
int n, error;
|
|
|
|
printf("Boot: bug device: ctrl=%d, dev=%d\n",
|
|
bugargs.ctrl_lun, bugargs.dev_lun);
|
|
printf("\nbootxx: first level bootstrap program [%s]\n\n", version);
|
|
|
|
f.f_flags = F_RAW;
|
|
if (devopen(&f, 0, &addr)) {
|
|
printf("bootxx: open failed\n");
|
|
_rtt();
|
|
}
|
|
|
|
addr = (char*)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;
|
|
char *addr;
|
|
{
|
|
int n, i, blknum;
|
|
struct exec *x;
|
|
|
|
addr -= sizeof(struct exec); /* assume OMAGIC, verify below */
|
|
x = (struct exec *)addr;
|
|
|
|
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, addr, &n))
|
|
{
|
|
printf("bootxx: read failed\n");
|
|
return -1;
|
|
}
|
|
if (n != block_size) {
|
|
printf("bootxx: short read\n");
|
|
return -1;
|
|
}
|
|
addr += block_size;
|
|
}
|
|
|
|
if (N_GETMAGIC(*x) != OMAGIC) {
|
|
printf("bootxx: secondary bootstrap isn't in OMAGIC format\n");
|
|
return(-1);
|
|
}
|
|
|
|
return 0;
|
|
}
|