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Placeholder bzImage support

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This commit is contained in:
Michael Brown
2007-01-14 04:27:25 +00:00
parent 797edf28b7
commit b07161f397
4 changed files with 158 additions and 0 deletions
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81
src/arch/i386/image/bzimage.c Normal file
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/*
* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
*
* 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/**
* @file
*
* Linux bzImage image format
*
*/
#include <errno.h>
#include <assert.h>
#include <realmode.h>
#include <bzimage.h>
#include <gpxe/uaccess.h>
#include <gpxe/image.h>
#include <gpxe/segment.h>
#include <gpxe/memmap.h>
#include <gpxe/shutdown.h>
struct image_type bzimage_image_type __image_type ( PROBE_NORMAL );
/**
* Execute bzImage image
*
* @v image bzImage image
* @ret rc Return status code
*/
static int bzimage_exec ( struct image *image ) {
}
/**
* Load bzImage image into memory
*
* @v image bzImage file
* @ret rc Return status code
*/
int bzimage_load ( struct image *image ) {
struct bzimage_header bzhdr;
/* Sanity check */
if ( image->len < ( BZHDR_OFFSET + sizeof ( bzhdr ) ) ) {
DBGC ( image, "BZIMAGE %p too short\n", image );
return -ENOEXEC;
}
/* Read and verify header */
copy_from_user ( &bzhdr, image->data, BZHDR_OFFSET, sizeof ( bzhdr ) );
if ( bzhdr.header != BZIMAGE_SIGNATURE ) {
DBGC ( image, "BZIMAGE %p not a bzImage\n", image );
return -ENOEXEC;
}
/* This is a bzImage image, valid or otherwise */
if ( ! image->type )
image->type = &bzimage_image_type;
return 0;
}
/** Linux bzImage image type */
struct image_type bzimage_image_type __image_type ( PROBE_NORMAL ) = {
.name = "bzImage",
.load = bzimage_load,
.exec = bzimage_exec,
};