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/* $OpenBSD: sparc64_installboot.c,v 1.7 2015/12/28 23:00:29 krw Exp $ */
/*
* Copyright (c) 2012, 2013 Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h> /* DEV_BSIZE */
#include <sys/stat.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ufs/ffs/fs.h>
#include "installboot.h"
char *bootldr;
char *blkstore;
char *ldrstore;
size_t blksize;
size_t ldrsize;
void
md_init(void)
{
stages = 2;
stage1 = "/usr/mdec/bootblk";
stage2 = "/usr/mdec/ofwboot";
bootldr = "/ofwboot";
}
void
md_loadboot(void)
{
struct stat sb;
size_t blocks;
int fd;
/* Load first-stage boot block. */
if ((fd = open(stage1, O_RDONLY)) < 0)
err(1, "open");
if (fstat(fd, &sb) == -1)
err(1, "fstat");
blocks = howmany((size_t)sb.st_size, DEV_BSIZE);
blksize = blocks * DEV_BSIZE;
if (verbose)
fprintf(stderr, "boot block is %zu bytes "
"(%zu blocks @ %u bytes = %zu bytes)\n",
(ssize_t)sb.st_size, blocks, DEV_BSIZE, blksize);
if (blksize > SBSIZE - DEV_BSIZE)
errx(1, "boot blocks too big (%zu > %d)",
blksize, SBSIZE - DEV_BSIZE);
blkstore = calloc(1, blksize);
if (blkstore == NULL)
err(1, "calloc");
if (read(fd, blkstore, sb.st_size) != (ssize_t)sb.st_size)
err(1, "read");
close(fd);
/* Load second-stage boot loader. */
if ((fd = open(stage2, O_RDONLY)) < 0)
err(1, "open");
if (fstat(fd, &sb) == -1)
err(1, "stat");
ldrsize = sb.st_size;
ldrstore = malloc(ldrsize);
if (ldrstore == NULL)
err(1, "malloc");
if (read(fd, ldrstore, ldrsize) != (ssize_t)sb.st_size)
err(1, "read");
close(fd);
}
void
md_installboot(int devfd, char *dev)
{
/* XXX - is this necessary? */
sync();
bootldr = fileprefix(root, bootldr);
if (bootldr == NULL)
exit(1);
if (!nowrite)
if (filecopy(stage2, bootldr) == -1)
exit(1);
/* Write bootblock into the superblock. */
if (verbose)
fprintf(stderr, "%s boot block to disk %s\n",
(nowrite ? "would write" : "writing"), dev);
if (nowrite)
return;
if (pwrite(devfd, blkstore, blksize, DEV_BSIZE) != (ssize_t)blksize)
err(1, "pwrite");
}
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