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Copy prep/stand/mkbootimage over to powerpc/stand/mkbootimage. The

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makefile still needs work, and I still need to do some additional
fiddling here, but this is to be the unified rs6000/prep/bebox
mkbootimage eventually.
This commit is contained in:
garbled 2007-12-18 18:19:07 +00:00
parent 0adaef6553
commit 67049908f4
3 changed files with 419 additions and 0 deletions
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19
sys/arch/powerpc/stand/mkbootimage/Makefile Normal file
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# $NetBSD: Makefile,v 1.1 2007/12/18 18:19:07 garbled Exp $
PROG= mkbootimage
SRCS= mkbootimage.c byteorder.c
NOMAN= # defined
# We don't use libbfd, but we do use the BFD ELF header files because
# they are somewhat more portable than NetBSD's own elf.h.
BFDTOP= ${NETBSDSRCDIR}/gnu/dist/binutils
LIBSA=${.CURDIR}/../../../../lib/libsa
.PATH.c: ${LIBSA}
CPPFLAGS= -I${LIBSA} -I${.CURDIR} -I${BFDTOP}/include
DPADD= ${LIBZ}
LDADD= -lz
.include <bsd.prog.mk>

393
sys/arch/powerpc/stand/mkbootimage/mkbootimage.c Normal file
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/* $NetBSD: mkbootimage.c,v 1.1 2007/12/18 18:19:07 garbled Exp $ */
/*-
* Copyright (C) 2006 Tim Rightnour
* Copyright (C) 1999, 2000 NONAKA Kimihiro (nonaka@NetBSD.org)
* Copyright (C) 1996, 1997, 1998, 1999 Cort Dougan (cort@fsmlasb.com)
* Copyright (C) 1996, 1997, 1998, 1999 Paul Mackeras (paulus@linuxcare.com)
* 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 Gary Thomas.
* 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"
#include "../../sys/sys/bootblock.h"
#else
#include <sys/bootblock.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <zlib.h>
#include <err.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/uio.h>
/* BFD ELF headers */
#include <elf/common.h>
#include <elf/external.h>
#include "byteorder.h"
#include "magic.h"
/* Globals */
int saloneflag = 0;
Elf32_External_Ehdr hdr, khdr;
struct stat elf_stat;
unsigned char mbr[512];
/*
* Macros to get values from multi-byte ELF header fields. These assume
* a big-endian image.
*/
#define ELFGET16(x) (((x)[0] << 8) | (x)[1])
#define ELFGET32(x) (((x)[0] << 24) | ((x)[1] << 16) | \
((x)[2] << 8) | (x)[3])
static void usage(void);
static int open_file(const char *, char *, Elf32_External_Ehdr *,
struct stat *);
static void check_mbr(int, int, char *);
int main(int, char **);
static void
usage(void)
{
fprintf(stderr, "usage: %s [-ls] [-b bootfile] [-k kernel] [-r rawdev]"
" bootimage\n", getprogname());
exit(1);
}
/* verify the file is ELF and ppc, and open it up */
static int
open_file(const char *ftype, char *file, Elf32_External_Ehdr *hdr,
struct stat *f_stat)
{
int fd;
if ((fd = open(file, 0)) < 0)
errx(2, "Can't open %s '%s': %s", ftype, file, strerror(errno));
fstat(fd, f_stat);
if (read(fd, hdr, sizeof(Elf32_External_Ehdr)) !=
sizeof(Elf32_External_Ehdr))
errx(3, "Can't read input '%s': %s", file, strerror(errno));
if (hdr->e_ident[EI_MAG0] != ELFMAG0 ||
hdr->e_ident[EI_MAG1] != ELFMAG1 ||
hdr->e_ident[EI_MAG2] != ELFMAG2 ||
hdr->e_ident[EI_MAG3] != ELFMAG3 ||
hdr->e_ident[EI_CLASS] != ELFCLASS32)
errx(3, "input '%s' is not ELF32 format", file);
if (hdr->e_ident[EI_DATA] != ELFDATA2MSB)
errx(3, "input '%s' is not big-endian", file);
if (ELFGET16(hdr->e_machine) != EM_PPC)
errx(3, "input '%s' is not PowerPC exec binary", file);
return(fd);
}
static void
check_mbr(int prep_fd, int lfloppyflag, char *rawdev)
{
int raw_fd;
unsigned long entry, length;
struct mbr_partition *mbrp;
struct stat raw_stat;
/* If we are building a standalone image, do not write an MBR, just
* set entry point and boot image size skipping over elf header
*/
if (saloneflag) {
entry = sa_htole32(0x400);
length = sa_htole32(elf_stat.st_size - sizeof(hdr) + 0x400);
lseek(prep_fd, sizeof(mbr), SEEK_SET);
write(prep_fd, &entry, sizeof(entry));
write(prep_fd, &length, sizeof(length));
return;
}
/*
* if we have a raw device, we need to check to see if it already
* has a partition table, and if so, read it in and check for
* suitability.
*/
if (rawdev != NULL) {
raw_fd = open(rawdev, O_RDONLY, 0);
if (raw_fd == -1)
errx(3, "couldn't open raw device %s: %s", rawdev,
strerror(errno));
fstat(raw_fd, &raw_stat);
if (!S_ISCHR(raw_stat.st_mode))
errx(3, "%s is not a raw device", rawdev);
if (read(raw_fd, mbr, 512) != 512)
errx(3, "MBR Read Failed: %s", strerror(errno));
mbrp = (struct mbr_partition *)&mbr[MBR_PART_OFFSET];
if (mbrp->mbrp_type != MBR_PTYPE_PREP)
errx(3, "First partition is not of type 0x%x.",
MBR_PTYPE_PREP);
if (mbrp->mbrp_start != 0)
errx(3, "Use of the raw device is intended for"
" upgrading of legacy installations. Your"
" install does not have a PReP boot partition"
" starting at sector 0. Use the -s option"
" to build an image instead.");
/* if we got this far, we are fine, write back the partition
* and write the entry points and get outta here */
/* Set entry point and boot image size skipping over elf header */
lseek(prep_fd, 0, SEEK_SET);
entry = sa_htole32(0x400);
length = sa_htole32(elf_stat.st_size - sizeof(hdr) + 0x400);
write(prep_fd, mbr, sizeof(mbr));
write(prep_fd, &entry, sizeof(entry));
write(prep_fd, &length, sizeof(length));
close(raw_fd);
return;
}
/* if we get to here, we want to build a standard floppy or netboot
* image to file, so just build it */
memset(mbr, 0, sizeof(mbr));
mbrp = (struct mbr_partition *)&mbr[MBR_PART_OFFSET];
/* Set entry point and boot image size skipping over elf header */
entry = sa_htole32(0x400);
length = sa_htole32(elf_stat.st_size - sizeof(hdr) + 0x400);
/*
* Set magic number for msdos partition
*/
*(unsigned short *)&mbr[MBR_MAGIC_OFFSET] = sa_htole16(MBR_MAGIC);
/*
* Build a "PReP" partition table entry in the boot record
* - "PReP" may only look at the system_indicator
*/
mbrp->mbrp_flag = MBR_PFLAG_ACTIVE;
mbrp->mbrp_type = MBR_PTYPE_PREP;
/*
* The first block of the diskette is used by this "boot record" which
* actually contains the partition table. (The first block of the
* partition contains the boot image, but I digress...) We'll set up
* one partition on the diskette and it shall contain the rest of the
* diskette.
*/
mbrp->mbrp_shd = 0; /* zero-based */
mbrp->mbrp_ssect = 2; /* one-based */
mbrp->mbrp_scyl = 0; /* zero-based */
mbrp->mbrp_ehd = 1; /* assumes two heads */
if (lfloppyflag)
mbrp->mbrp_esect = 36; /* 2.88MB floppy */
else
mbrp->mbrp_esect = 18; /* assumes 18 sectors/track */
mbrp->mbrp_ecyl = 79; /* assumes 80 cylinders/diskette */
/*
* The "PReP" software ignores the above fields and just looks at
* the next two.
* - size of the diskette is (assumed to be)
* (2 tracks/cylinder)(18 sectors/tracks)(80 cylinders/diskette)
* - unlike the above sector numbers,
* the beginning sector is zero-based!
*/
/* This has to be 0 on the PowerStack? */
mbrp->mbrp_start = sa_htole32(0);
mbrp->mbrp_size = sa_htole32(2 * 18 * 80 - 1);
write(prep_fd, mbr, sizeof(mbr));
write(prep_fd, &entry, sizeof(entry));
write(prep_fd, &length, sizeof(length));
}
int
main(int argc, char **argv)
{
unsigned char *elf_img = NULL, *kern_img = NULL;
int i, ch, tmp, kgzlen, err, lfloppyflag=0;
int elf_fd, prep_fd, kern_fd, elf_img_len = 0;
off_t lenpos, kstart, kend;
unsigned long length;
long flength;
gzFile gzf;
struct stat kern_stat;
char *kernel = NULL, *boot = NULL, *rawdev = NULL;
Elf32_External_Phdr phdr;
setprogname(argv[0]);
kern_len = 0;
while ((ch = getopt(argc, argv, "b:k:lr:s")) != -1)
switch (ch) {
case 'b':
boot = optarg;
break;
case 'k':
kernel = optarg;
break;
case 'l':
lfloppyflag = 1;
break;
case 'r':
rawdev = optarg;
break;
case 's':
saloneflag = 1;
break;
case '?':
default:
usage();
/* NOTREACHED */
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
if (kernel == NULL)
kernel = "/netbsd";
if (boot == NULL)
boot = "/usr/mdec/boot";
elf_fd = open_file("bootloader", boot, &hdr, &elf_stat);
kern_fd = open_file("kernel", kernel, &khdr, &kern_stat);
kern_len = kern_stat.st_size + MAGICSIZE + KERNLENSIZE;
for (i = 0; i < ELFGET16(hdr.e_phnum); i++) {
lseek(elf_fd, ELFGET32(hdr.e_phoff) + sizeof(phdr) * i,
SEEK_SET);
if (read(elf_fd, &phdr, sizeof(phdr)) != sizeof(phdr))
errx(3, "Can't read input '%s' phdr : %s", boot,
strerror(errno));
if ((ELFGET32(phdr.p_type) != PT_LOAD) ||
!(ELFGET32(phdr.p_flags) & PF_X))
continue;
fstat(elf_fd, &elf_stat);
elf_img_len = elf_stat.st_size - ELFGET32(phdr.p_offset);
lseek(elf_fd, ELFGET32(phdr.p_offset), SEEK_SET);
break;
}
if ((prep_fd = open(argv[0], O_RDWR|O_TRUNC, 0)) < 0) {
/* we couldn't open it, it must be new */
prep_fd = creat(argv[0], 0644);
if (prep_fd < 0)
errx(2, "Can't open output '%s': %s", argv[0],
strerror(errno));
}
check_mbr(prep_fd, lfloppyflag, rawdev);
/* Set file pos. to 2nd sector where image will be written */
lseek(prep_fd, 0x400, SEEK_SET);
/* Copy boot image */
elf_img = (unsigned char *)malloc(elf_img_len);
if (!elf_img)
errx(3, "Can't malloc: %s", strerror(errno));
if (read(elf_fd, elf_img, elf_img_len) != elf_img_len)
errx(3, "Can't read file '%s' : %s", boot, strerror(errno));
write(prep_fd, elf_img, elf_img_len);
free(elf_img);
/* Copy kernel */
kern_img = (unsigned char *)malloc(kern_stat.st_size);
if (kern_img == NULL)
errx(3, "Can't malloc: %s", strerror(errno));
/* we need to jump back after having read the headers */
lseek(kern_fd, 0, SEEK_SET);
if (read(kern_fd, (void *)kern_img, kern_stat.st_size) !=
kern_stat.st_size)
errx(3, "Can't read kernel '%s' : %s", kernel, strerror(errno));
gzf = gzdopen(dup(prep_fd), "a");
if (gzf == NULL)
errx(3, "Can't init compression: %s", strerror(errno));
if (gzsetparams(gzf, Z_BEST_COMPRESSION, Z_DEFAULT_STRATEGY) != Z_OK)
errx(3, "%s", gzerror(gzf, &err));
/* write a magic number and size before the kernel */
write(prep_fd, (void *)magic, MAGICSIZE);
lenpos = lseek(prep_fd, 0, SEEK_CUR);
tmp = sa_htobe32(0);
write(prep_fd, (void *)&tmp, KERNLENSIZE);
/* write in the compressed kernel */
kstart = lseek(prep_fd, 0, SEEK_CUR);
kgzlen = gzwrite(gzf, kern_img, kern_stat.st_size);
gzclose(gzf);
kend = lseek(prep_fd, 0, SEEK_CUR);
/* jump back to the length position now that we know the length */
lseek(prep_fd, lenpos, SEEK_SET);
kgzlen = kend - kstart;
tmp = sa_htobe32(kgzlen);
write(prep_fd, (void *)&tmp, KERNLENSIZE);
length = sa_htole32(0x400 + elf_img_len + 8 + kgzlen);
lseek(prep_fd, sizeof(mbr) + 4, SEEK_SET);
write(prep_fd, &length, sizeof(length));
flength = 0x400 + elf_img_len + 8 + kgzlen;
if (lfloppyflag)
flength -= (5760 * 512);
else
flength -= (2880 * 512);
if (flength > 0 && !saloneflag)
fprintf(stderr, "%s: Image %s is %d bytes larger than single"
" floppy. Can only be used for netboot.\n", getprogname(),
argv[0], flength);
free(kern_img);
close(kern_fd);
close(prep_fd);
close(elf_fd);
return 0;
}

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sys/arch/powerpc/stand/mkbootimage/prep_magic.h Normal file
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/* $NetBSD: prep_magic.h,v 1.1 2007/12/18 18:19:07 garbled Exp $ */
char magic[] = "KMA";
int kern_len;
#define MAGICSIZE sizeof (magic)
#define KERNLENSIZE sizeof (kern_len)
#define ENTRY 0x100000