path: root/src/target/image.c

/***************************************************************************
 *   Copyright (C) 2007 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 *                                                                         *
 *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
 *   oyvind.harboe@zylin.com                                               *
 *                                                                         *
 *   Copyright (C) 2008 by Spencer Oliver                                  *
 *   spen@spen-soft.co.uk                                                  *
 *                                                                         *
 *   Copyright (C) 2009 by Franck Hereson                                  *
 *   franck.hereson@secad.fr                                               *
 *                                                                         *
 *   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.             *
 ***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "image.h"
#include "target.h"
#include <helper/log.h>


/* convert ELF header field to host endianness */
#define field16(elf,field)\
	((elf->endianness == ELFDATA2LSB)? \
		le_to_h_u16((uint8_t*)&field):be_to_h_u16((uint8_t*)&field))

#define field32(elf,field)\
	((elf->endianness == ELFDATA2LSB)? \
		le_to_h_u32((uint8_t*)&field):be_to_h_u32((uint8_t*)&field))

static int autodetect_image_type(struct image *image, const char *url)
{
	int retval;
	struct fileio fileio;
	size_t read_bytes;
	uint8_t buffer[9];

	/* read the first 4 bytes of image */
	if ((retval = fileio_open(&fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
	{
		return retval;
	}
	retval = fileio_read(&fileio, 9, buffer, &read_bytes);

	if (retval == ERROR_OK)
	{
		if (read_bytes != 9)
		{
			retval = ERROR_FILEIO_OPERATION_FAILED;
		}
	}
	fileio_close(&fileio);

	if (retval != ERROR_OK)
		return retval;

	/* check header against known signatures */
	if (strncmp((char*)buffer,ELFMAG,SELFMAG) == 0)
	{
		LOG_DEBUG("ELF image detected.");
		image->type = IMAGE_ELF;
	}
	else if ((buffer[0]==':') /* record start byte */
		&&(isxdigit(buffer[1]))
		&&(isxdigit(buffer[2]))
		&&(isxdigit(buffer[3]))
		&&(isxdigit(buffer[4]))
		&&(isxdigit(buffer[5]))
		&&(isxdigit(buffer[6]))
		&&(buffer[7]=='0') /* record type : 00 -> 05 */
		&&(buffer[8]>='0') && (buffer[8]<'6'))
	{
		LOG_DEBUG("IHEX image detected.");
		image->type = IMAGE_IHEX;
	}
	else if ((buffer[0] == 'S') /* record start byte */
		&&(isxdigit(buffer[1]))
		&&(isxdigit(buffer[2]))
		&&(isxdigit(buffer[3]))
		&&(buffer[1] >= '0') && (buffer[1] < '9'))
	{
		LOG_DEBUG("S19 image detected.");
		image->type = IMAGE_SRECORD;
	}
	else
	{
		image->type = IMAGE_BINARY;
	}

	return ERROR_OK;
}

static int identify_image_type(struct image *image, const char *type_string, const char *url)
{
	if (type_string)
	{
		if (!strcmp(type_string, "bin"))
		{
			image->type = IMAGE_BINARY;
		}
		else if (!strcmp(type_string, "ihex"))
		{
			image->type = IMAGE_IHEX;
		}
		else