src/target/image.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef IMAGE_H
  21 #define IMAGE_H
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #ifdef HAVE_ELF_H
  28 #include <elf.h>
  29 #endif
  30 #include "replacements.h"
  31 #include "fileio.h"
  32 #include "target.h"
  33
  34 #define IMAGE_MAX_ERROR_STRING          (256)
  35 #define IMAGE_MAX_SECTIONS                      (128)
  36
  37 #define IMAGE_MEMORY_CACHE_SIZE         (2048)
  38
  39 typedef enum image_type
  40 {
  41     IMAGE_BINARY,       /* plain binary */
  42     IMAGE_IHEX,         /* intel hex-record format */
  43     IMAGE_MEMORY,       /* target-memory pseudo-image */
  44     IMAGE_ELF,          /* ELF binary */
  45     IMAGE_SRECORD,      /* motorola s19 */
  46     IMAGE_BUILDER,      /* when building a new image */
  47 } image_type_t;
  48
  49 typedef struct image_section_s
  50 {
  51         u32 base_address;
  52         u32 size;
  53         int flags;
  54         void *private;          /* private data */
  55 } image_section_t;
  56
  57 typedef struct image_s
  58 {
  59         image_type_t type;              /* image type (plain, ihex, ...) */
  60         void *type_private;             /* type private data */
  61         int num_sections;               /* number of sections contained in the image */
  62         image_section_t *sections;      /* array of sections */
  63         int base_address_set;   /* whether the image has a base address set (for relocation purposes) */
  64         int base_address;               /* base address, if one is set */
  65         int start_address_set;  /* whether the image has a start address (entry point) associated */
  66         u32 start_address;              /* start address, if one is set */
  67 } image_t;
  68
  69 typedef struct image_binary_s
  70 {
  71         fileio_t fileio;
  72 } image_binary_t;
  73
  74 typedef struct image_ihex_s
  75 {
  76         fileio_t fileio;
  77         u8 *buffer;
  78 } image_ihex_t;
  79
  80 typedef struct image_memory_s
  81 {
  82         target_t *target;
  83         u8 *cache;
  84         u32 cache_address;
  85 } image_memory_t;
  86
  87 typedef struct fileio_elf_s
  88 {
  89         fileio_t fileio;
  90         Elf32_Ehdr *header;
  91         Elf32_Phdr *segments;
  92         u32 segment_count;
  93         u8 endianness;
  94 } image_elf_t;
  95
  96 typedef struct image_mot_s
  97 {
  98         fileio_t fileio;
  99         u8 *buffer;
 100 } image_mot_t;
 101
 102 extern int image_open(image_t *image, char *url, char *type_string);
 103 extern int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read);
 104 extern int image_close(image_t *image);
 105 extern int image_add_section(image_t *image, u32 base, u32 size, int flags, u8 *data);
 106
 107 extern int image_calculate_checksum(u8* buffer, u32 nbytes, u32* checksum);
 108
 109 #define ERROR_IMAGE_FORMAT_ERROR        (-1400)
 110 #define ERROR_IMAGE_TYPE_UNKNOWN        (-1401)
 111 #define ERROR_IMAGE_TEMPORARILY_UNAVAILABLE             (-1402)
 112 #define ERROR_IMAGE_CHECKSUM            (-1403)
 113
 114 #endif /* IMAGE_H */