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NetBSD/usr.sbin/installboot/arch/pmax.c

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/* $NetBSD: pmax.c,v 1.14 2009/04/05 11:55:39 lukem Exp $ */
/*-
* Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Simon Burge.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn of Wasabi Systems.
*
* 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.
*/
/*
* Copyright (c) 1999 Ross Harvey. 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 Ross Harvey
* for the NetBSD Project.
* 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.
*/
/*
* Copyright (c) 1999 Christopher G. Demetriou. 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 Christopher G. Demetriou
* for the NetBSD Project.
* 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if !defined(__lint)
__RCSID("$NetBSD: pmax.c,v 1.14 2009/04/05 11:55:39 lukem Exp $");
#endif /* !__lint */
#include <sys/param.h>
#include <assert.h>
#include <err.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/exec_elf.h>
#include "installboot.h"
static int load_bootstrap(ib_params *, char **,
uint32_t *, uint32_t *, size_t *);
static int pmax_clearboot(ib_params *);
static int pmax_setboot(ib_params *);
struct ib_mach ib_mach_pmax =
{ "pmax", pmax_setboot, pmax_clearboot, no_editboot,
IB_STAGE1START | IB_APPEND | IB_SUNSUM };
static int
pmax_clearboot(ib_params *params)
{
struct pmax_boot_block bb;
ssize_t rv;
assert(params != NULL);
assert(params->fsfd != -1);
assert(params->filesystem != NULL);
assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE);
rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET);
if (rv == -1) {
warn("Reading `%s'", params->filesystem);
return (0);
} else if (rv != sizeof(bb)) {
warnx("Reading `%s': short read", params->filesystem);
return (0);
}
if (le32toh(bb.magic) != PMAX_BOOT_MAGIC) {
warnx(
"Old boot block magic number invalid; boot block invalid");
return (0);
}
bb.map[0].num_blocks = bb.map[0].start_block = bb.mode = 0;
bb.magic = htole32(PMAX_BOOT_MAGIC);
if (params->flags & IB_SUNSUM) {
uint16_t sum;
sum = compute_sunsum((uint16_t *)&bb);
if (! set_sunsum(params, (uint16_t *)&bb, sum))
return (0);
}
if (params->flags & IB_VERBOSE)
printf("%slearing boot block\n",
(params->flags & IB_NOWRITE) ? "Not c" : "C");
if (params->flags & IB_NOWRITE)
return (1);
rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET);
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
return (0);
} else if (rv != sizeof(bb)) {
warnx("Writing `%s': short write", params->filesystem);
return (0);
}
return (1);
}
static int
pmax_setboot(ib_params *params)
{
struct pmax_boot_block bb;
uint32_t startblock;
int retval;
char *bootstrapbuf;
size_t bootstrapsize;
uint32_t bootstrapload, bootstrapexec;
ssize_t rv;
assert(params != NULL);
assert(params->fsfd != -1);
assert(params->filesystem != NULL);
assert(params->s1fd != -1);
assert(params->stage1 != NULL);
assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE);
retval = 0;
bootstrapbuf = NULL;
if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload,
&bootstrapexec, &bootstrapsize))
goto done;
rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET);
if (rv == -1) {
warn("Reading `%s'", params->filesystem);
goto done;
} else if (rv != sizeof(bb)) {
warnx("Reading `%s': short read", params->filesystem);
goto done;
}
/* fill in the updated boot block fields */
if (params->flags & IB_APPEND) {
if (! S_ISREG(params->fsstat.st_mode)) {
warnx(
"`%s' must be a regular file to append a bootstrap",
params->filesystem);
goto done;
}
startblock = howmany(params->fsstat.st_size,
PMAX_BOOT_BLOCK_BLOCKSIZE);
} else if (params->flags & IB_STAGE1START) {
startblock = params->s1start;
} else {
startblock = PMAX_BOOT_BLOCK_OFFSET / PMAX_BOOT_BLOCK_BLOCKSIZE
+ 1;
}
bb.map[0].start_block = htole32(startblock);
bb.map[0].num_blocks =
htole32(howmany(bootstrapsize, PMAX_BOOT_BLOCK_BLOCKSIZE));
bb.magic = htole32(PMAX_BOOT_MAGIC);
bb.load_addr = htole32(bootstrapload);
bb.exec_addr = htole32(bootstrapexec);
bb.mode = htole32(PMAX_BOOTMODE_CONTIGUOUS);
if (params->flags & IB_SUNSUM) {
uint16_t sum;
sum = compute_sunsum((uint16_t *)&bb);
if (! set_sunsum(params, (uint16_t *)&bb, sum))
goto done;
}
if (params->flags & IB_VERBOSE) {
printf("Bootstrap start sector: %u\n",
le32toh(bb.map[0].start_block));
printf("Bootstrap sector count: %u\n",
le32toh(bb.map[0].num_blocks));
printf("Bootstrap load address: %#x\n",
le32toh(bb.load_addr));
printf("Bootstrap exec address: %#x\n",
le32toh(bb.exec_addr));
printf("%sriting bootstrap\n",
(params->flags & IB_NOWRITE) ? "Not w" : "W");
}
if (params->flags & IB_NOWRITE) {
retval = 1;
goto done;
}
rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize,
startblock * PMAX_BOOT_BLOCK_BLOCKSIZE);
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
goto done;
} else if ((size_t)rv != bootstrapsize) {
warnx("Writing `%s': short write", params->filesystem);
goto done;
}
if (params->flags & IB_VERBOSE)
printf("Writing boot block\n");
rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET);
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
goto done;
} else if (rv != sizeof(bb)) {
warnx("Writing `%s': short write", params->filesystem);
goto done;
} else {
retval = 1;
}
done:
if (bootstrapbuf)
free(bootstrapbuf);
return (retval);
}
#define MAX_SEGMENTS 10 /* We can load up to 10 segments */
struct seglist {
Elf32_Addr addr;
Elf32_Off f_offset;
Elf32_Word f_size;
};
static int
load_bootstrap(ib_params *params, char **data,
uint32_t *loadaddr, uint32_t *execaddr, size_t *len)
{
int i, nsegs;
Elf32_Addr lowaddr, highaddr;
Elf32_Ehdr ehdr;
Elf32_Phdr phdr;
struct seglist seglist[MAX_SEGMENTS];
if ((pread(params->s1fd, &ehdr, sizeof(ehdr), 0)) != sizeof(ehdr)) {
warn("Reading `%s'", params->stage1);
return (0);
}
if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) ||
(ehdr.e_ident[EI_CLASS] != ELFCLASS32)) {
warnx("No ELF header in `%s'", params->stage1);
return (0);
}
nsegs = highaddr = 0;
lowaddr = (uint32_t) ULONG_MAX;
for (i = 0; i < le16toh(ehdr.e_phnum); i++) {
if (pread(params->s1fd, &phdr, sizeof(phdr),
(off_t) le32toh(ehdr.e_phoff) + i * sizeof(phdr))
!= sizeof(phdr)) {
warn("Reading `%s'", params->stage1);
return (0);
}
if (le32toh(phdr.p_type) != PT_LOAD)
continue;
seglist[nsegs].addr = le32toh(phdr.p_paddr);
seglist[nsegs].f_offset = le32toh(phdr.p_offset);
seglist[nsegs].f_size = le32toh(phdr.p_filesz);
nsegs++;
if (le32toh(phdr.p_paddr) < lowaddr)
lowaddr = le32toh(phdr.p_paddr);
if (le32toh(phdr.p_paddr) + le32toh(phdr.p_filesz) > highaddr)
highaddr = le32toh(phdr.p_paddr) +
le32toh(phdr.p_filesz);
}
*loadaddr = lowaddr;
*execaddr = le32toh(ehdr.e_entry);
*len = roundup(highaddr - lowaddr, PMAX_BOOT_BLOCK_BLOCKSIZE);
if ((*data = malloc(*len)) == NULL) {
warn("Allocating %lu bytes", (unsigned long) *len);
return (0);
}
/* Now load the bootstrap into memory */
for (i = 0; i < nsegs; i++) {
if ((Elf32_Word)pread(params->s1fd,
*data + seglist[i].addr - lowaddr,
seglist[i].f_size, (off_t)seglist[i].f_offset)
!= seglist[i].f_size) {
warn("Reading `%s'", params->stage1);
return (0);
}
}
return (1);
}
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