212 lines
6.9 KiB
C
212 lines
6.9 KiB
C
/* $NetBSD: bootxx.c,v 1.24 2001/07/07 14:21:01 simonb Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1999 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jonathan Stone, Michael Hitch and Simon Burge.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Ralph Campbell.
|
|
*
|
|
* 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/exec_elf.h>
|
|
#include <lib/libsa/stand.h>
|
|
#include <machine/dec_prom.h>
|
|
|
|
typedef void (*entrypt) __P((int, char **, int, const void *));
|
|
|
|
int main __P((int, char **));
|
|
entrypt loadfile __P((char *path, char *name));
|
|
|
|
extern int clear_cache __P((char *addr, int len));
|
|
|
|
/*
|
|
* This gets arguments from the PROM, calls other routines to open
|
|
* and load the secondary boot loader called boot, and then transfers
|
|
* execution to that program.
|
|
*
|
|
* Argv[0] should be something like "rz(0,0,0)netbsd" on a DECstation 3100.
|
|
* Argv[0,1] should be something like "boot 5/rz0/netbsd" on a DECstation 5000.
|
|
* The argument "-a" means netbsd should do an automatic reboot.
|
|
*/
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
char *cp;
|
|
entrypt entry;
|
|
|
|
/* check for DS5000 boot */
|
|
if (strcmp(argv[0], "boot") == 0) {
|
|
argc--;
|
|
argv++;
|
|
}
|
|
cp = *argv;
|
|
|
|
printf("\nNetBSD/pmax " NETBSD_VERS " " BOOTXX_FS_NAME " Primary Bootstrap\n");
|
|
|
|
entry = loadfile(cp, "/boot.pmax");
|
|
if ((int)entry != -1)
|
|
goto goodload;
|
|
|
|
/* Give old /boot a go... */
|
|
entry = loadfile(cp, "/boot");
|
|
if ((int)entry != -1)
|
|
goto goodload;
|
|
|
|
/* Booting off an 8.3 filesystem? */
|
|
entry = loadfile(cp, "/boot.pma");
|
|
if ((int)entry != -1)
|
|
goto goodload;
|
|
|
|
goto bad;
|
|
goodload:
|
|
|
|
clear_cache((char *)PRIMARY_LOAD_ADDRESS, 1024 * 1024);
|
|
if (callv == &callvec)
|
|
entry(argc, argv, 0, 0);
|
|
else
|
|
entry(argc, argv, DEC_PROM_MAGIC, callv);
|
|
bad:
|
|
/* XXX would calling prom_halt here be cleaner? */
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Open 'filename', read in program and return the entry point or -1 if error.
|
|
*/
|
|
entrypt
|
|
loadfile(path, name)
|
|
char *path, *name;
|
|
{
|
|
int fd, i;
|
|
char c, *buf, bootfname[64];
|
|
Elf32_Ehdr ehdr;
|
|
Elf32_Phdr phdr;
|
|
|
|
strcpy(bootfname, path);
|
|
buf = bootfname;
|
|
while ((c = *buf++) != '\0') {
|
|
if (c == ')')
|
|
break;
|
|
if (c != '/')
|
|
continue;
|
|
while ((c = *buf++) != '\0')
|
|
if (c == '/')
|
|
break;
|
|
/*
|
|
* Make "N/rzY" with no trailing '/' valid by adding
|
|
* the extra '/' before appending 'bootpmax' to the path.
|
|
*/
|
|
if (c != '/') {
|
|
buf--;
|
|
*buf++ = '/';
|
|
*buf = '\0';
|
|
}
|
|
break;
|
|
}
|
|
strcpy(buf, name);
|
|
if ((fd = open(bootfname, 0)) < 0) {
|
|
printf("open %s: %d\n", bootfname, errno);
|
|
goto err;
|
|
}
|
|
|
|
/* read the exec header */
|
|
i = read(fd, (char *)&ehdr, sizeof(ehdr));
|
|
if ((i != sizeof(ehdr)) ||
|
|
(memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) ||
|
|
(ehdr.e_ident[EI_CLASS] != ELFCLASS32)) {
|
|
printf("%s: No ELF header\n", bootfname);
|
|
goto cerr;
|
|
}
|
|
|
|
for (i = 0; i < ehdr.e_phnum; i++) {
|
|
if (lseek(fd, (off_t) ehdr.e_phoff + i * sizeof(phdr), 0) < 0)
|
|
goto cerr;
|
|
if (read(fd, &phdr, sizeof(phdr)) != sizeof(phdr))
|
|
goto cerr;
|
|
if (phdr.p_type != PT_LOAD)
|
|
continue;
|
|
if (lseek(fd, (off_t)phdr.p_offset, 0) < 0)
|
|
goto cerr;
|
|
if (read(fd, (char *)phdr.p_paddr, phdr.p_filesz) != phdr.p_filesz)
|
|
goto cerr;
|
|
}
|
|
return ((entrypt)ehdr.e_entry);
|
|
|
|
cerr:
|
|
#ifndef LIBSA_NO_FS_CLOSE
|
|
(void) close(fd);
|
|
#endif
|
|
err:
|
|
printf("Can't load '%s'\n", bootfname);
|
|
return ((entrypt)-1);
|
|
}
|