mirror of
https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
synced 2025-08-12 07:31:12 -04:00
144 lines
4.0 KiB
C
144 lines
4.0 KiB
C
/* $NetBSD: bootxx.c,v 1.26 2015/10/08 20:58:13 joerg 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/exec_aout.h>
|
|
#include <sys/bootblock.h>
|
|
|
|
#include <lib/libkern/libkern.h>
|
|
#include <lib/libsa/stand.h>
|
|
|
|
#include <machine/promlib.h>
|
|
#include <sparc/stand/common/promdev.h>
|
|
|
|
int debug;
|
|
int netif_debug;
|
|
|
|
/*
|
|
* Boot device is derived from ROM provided information.
|
|
*/
|
|
const char progname[] = "bootxx";
|
|
struct open_file io;
|
|
|
|
/*
|
|
* The contents of the bbinfo below are set by installboot(8)
|
|
* to hold the filesystem data of the second-stage boot program
|
|
* (typically `/boot'): filesystem block size, # of filesystem
|
|
* blocks and the block numbers themselves.
|
|
*/
|
|
struct shared_bbinfo bbinfo = {
|
|
{ SPARC_BBINFO_MAGIC },
|
|
0,
|
|
SHARED_BBINFO_MAXBLOCKS,
|
|
{ 0 }
|
|
};
|
|
|
|
int main(void);
|
|
void loadboot(struct open_file *, char *);
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
char *dummy1;
|
|
const char *dummy;
|
|
void (*entry)(void *) = (void (*)(void *))PROM_LOADADDR;
|
|
void *arg;
|
|
|
|
#ifdef HEAP_VARIABLE
|
|
{
|
|
extern char end[];
|
|
setheap((void *)ALIGN(end), (void *)0xffffffff);
|
|
}
|
|
#endif
|
|
prom_init();
|
|
dummy = prom_getbootpath();
|
|
if (dummy && *dummy != '\0')
|
|
strcpy(prom_bootdevice, dummy);
|
|
io.f_flags = F_RAW;
|
|
if (devopen(&io, 0, &dummy1)) {
|
|
panic("%s: can't open device `%s'", progname,
|
|
prom_bootdevice[0] ? prom_bootdevice : "unknown");
|
|
}
|
|
|
|
(void)loadboot(&io, (void *)PROM_LOADADDR);
|
|
(io.f_dev->dv_close)(&io);
|
|
|
|
arg = (prom_version() == PROM_OLDMON) ? (void *)PROM_LOADADDR : romp;
|
|
(*entry)(arg);
|
|
_rtt();
|
|
}
|
|
|
|
void
|
|
loadboot(struct open_file *f, char *addr)
|
|
{
|
|
int i;
|
|
char *buf;
|
|
size_t n;
|
|
daddr_t blk;
|
|
|
|
/*
|
|
* Allocate a buffer that we can map into DVMA space; only
|
|
* needed for sun4 architecture, but use it for all machines
|
|
* to keep code size down as much as possible.
|
|
*/
|
|
buf = alloc(bbinfo.bbi_block_size);
|
|
if (buf == NULL)
|
|
panic("%s: alloc failed", progname);
|
|
|
|
for (i = 0; i < bbinfo.bbi_block_count; i++) {
|
|
if ((blk = bbinfo.bbi_block_table[i]) == 0)
|
|
panic("%s: block table corrupt", progname);
|
|
|
|
#ifdef DEBUG
|
|
printf("%s: block # %d = %d\n", progname, i, blk);
|
|
#endif
|
|
if ((f->f_dev->dv_strategy)(f->f_devdata, F_READ, blk,
|
|
bbinfo.bbi_block_size, buf, &n)) {
|
|
printf("%s: read failure", progname);
|
|
_rtt();
|
|
}
|
|
memcpy(addr, buf, bbinfo.bbi_block_size);
|
|
if (n != bbinfo.bbi_block_size)
|
|
panic("%s: short read", progname);
|
|
if (i == 0) {
|
|
int m = N_GETMAGIC(*(struct exec *)addr);
|
|
if (m == ZMAGIC || m == NMAGIC || m == OMAGIC) {
|
|
/* Move exec header out of the way */
|
|
memcpy(addr - sizeof(struct exec), addr, n);
|
|
addr -= sizeof(struct exec);
|
|
}
|
|
}
|
|
addr += n;
|
|
}
|
|
|
|
}
|