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/*------------------------------------------------------------ -*- C -*-
* Eric Biederman <ebiederman@xmission.com>
* Erik Arjan Hendriks <hendriks@lanl.gov>
*
* 14 December 2004
* This file is a derivative of the beoboot image loader, modified
* to work with kexec.
*
* This version is derivative from the orignal mkbootimg.c which is
* Copyright (C) 2000 Scyld Computing Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*
*--------------------------------------------------------------------*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <getopt.h>
#include <x86/x86-linux.h>
#include <boot/beoboot.h>
#include "../../kexec.h"
#include "kexec-x86.h"
#include <arch/options.h>
int beoboot_probe(const char *buf, off_t len)
{
struct beoboot_header bb_header;
const char *cmdline, *kernel;
int result;
if ((uintmax_t)len < (uintmax_t)sizeof(bb_header)) {
return -1;
}
memcpy(&bb_header, buf, sizeof(bb_header));
if (memcmp(bb_header.magic, BEOBOOT_MAGIC, 4) != 0) {
return -1;
}
if (bb_header.arch != BEOBOOT_ARCH) {
return -1;
}
/* Make certain a bzImage is packed into there.
*/
cmdline = buf + sizeof(bb_header);
kernel = cmdline + bb_header.cmdline_size;
result = bzImage_probe(kernel, bb_header.kernel_size);
return result;
}
void beoboot_usage(void)
{
printf( "-d, --debug Enable debugging to help spot a failure.\n"
" --real-mode Use the kernels real mode entry point.\n"
);
/* No parameters are parsed */
}
#define SETUP_BASE 0x90000
#define KERN32_BASE 0x100000 /* 1MB */
#define INITRD_BASE 0x1000000 /* 16MB */
int beoboot_load(int argc, char **argv, const char *buf, off_t UNUSED(len),
struct kexec_info *info)
{
struct beoboot_header bb_header;
const char *command_line, *kernel, *initrd;
int debug, real_mode_entry;
int opt;
int result;
/* See options.h -- add any more there, too. */
static const struct option options[] = {
KEXEC_ARCH_OPTIONS
{ "debug", 0, 0, OPT_DEBUG },
{ "real-mode", 0, 0, OPT_REAL_MODE },
{ 0, 0, 0, 0 },
};
static const char short_options[] = KEXEC_ARCH_OPT_STR "";
/*
* Parse the command line arguments
*/
debug = 0;
real_mode_entry = 0;
while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
switch(opt) {
default:
/* Ignore core options */
if (opt < OPT_ARCH_MAX) {
break;
}
case '?':
usage();
return -1;
case OPT_DEBUG:
debug = 1;
break;
case OPT_REAL_MODE:
real_mode_entry = 1;
break;
}
}
/*
* Parse the file
*/
memcpy(&bb_header, buf, sizeof(bb_header));
command_line = buf + sizeof(bb_header);
kernel = command_line + bb_header.cmdline_size;
initrd = NULL;
if (bb_header.flags & BEOBOOT_INITRD_PRESENT) {
initrd = kernel + bb_header.kernel_size;
}
result = do_bzImage_load(info,
kernel, bb_header.kernel_size,
command_line, bb_header.cmdline_size,
initrd, bb_header.initrd_size,
real_mode_entry, debug);
return result;
}
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