tools/omapimage.c

   1 /*
   2  * (C) Copyright 2010
   3  * Linaro LTD, www.linaro.org
   4  * Author: John Rigby <john.rigby@linaro.org>
   5  * Based on TI's signGP.c
   6  *
   7  * (C) Copyright 2009
   8  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
   9  *
  10  * (C) Copyright 2008
  11  * Marvell Semiconductor <www.marvell.com>
  12  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
  13  *
  14  * See file CREDITS for list of people who contributed to this
  15  * project.
  16  *
  17  * This program is free software; you can redistribute it and/or
  18  * modify it under the terms of the GNU General Public License as
  19  * published by the Free Software Foundation; either version 2 of
  20  * the License, or (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  30  * MA 02111-1307 USA
  31  */
  32
  33 /* Required to obtain the getline prototype from stdio.h */
  34 #define _GNU_SOURCE
  35
  36 #include "mkimage.h"
  37 #include <image.h>
  38 #include "omapimage.h"
  39
  40 /* Header size is CH header rounded up to 512 bytes plus GP header */
  41 #define OMAP_CH_HDR_SIZE 512
  42 #define OMAP_GP_HDR_SIZE (sizeof(struct gp_header))
  43 #define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE+OMAP_GP_HDR_SIZE)
  44
  45 static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
  46
  47 static int omapimage_check_image_types(uint8_t type)
  48 {
  49         if (type == IH_TYPE_OMAPIMAGE)
  50                 return EXIT_SUCCESS;
  51         else {
  52                 fprintf(stderr, "Unknown OMAP image type - %x", type);
  53                 return EXIT_FAILURE;
  54         }
  55 }
  56
  57 /*
  58  * Only the simplest image type is currently supported:
  59  * TOC pointing to CHSETTINGS
  60  * TOC terminator
  61  * CHSETTINGS
  62  *
  63  * padding to OMAP_CH_HDR_SIZE bytes
  64  *
  65  * gp header
  66  *   size
  67  *   load_addr
  68  */
  69 static int valid_gph_size(uint32_t size)
  70 {
  71         return size;
  72 }
  73
  74 static int valid_gph_load_addr(uint32_t load_addr)
  75 {
  76         return load_addr;
  77 }
  78
  79 static int omapimage_verify_header(unsigned char *ptr, int image_size,
  80                         struct mkimage_params *params)
  81 {
  82         struct ch_toc *toc = (struct ch_toc *)ptr;
  83         struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
  84         uint32_t offset, size;
  85
  86         while (toc->section_offset != 0xffffffff
  87                         && toc->section_size != 0xffffffff) {
  88                 offset = toc->section_offset;
  89                 size = toc->section_size;
  90                 if (!offset || !size)
  91                         return -1;
  92                 if (offset >= OMAP_CH_HDR_SIZE ||
  93                     offset+size >= OMAP_CH_HDR_SIZE)
  94                         return -1;
  95                 toc++;
  96         }
  97         if (!valid_gph_size(gph->size))
  98                 return -1;
  99         if (!valid_gph_load_addr(gph->load_addr))
 100                 return -1;
 101
 102         return 0;
 103 }
 104
 105 static void omapimage_print_section(struct ch_settings *chs)
 106 {
 107         const char *section_name;
 108
 109         if (chs->section_key)
 110                 section_name = "CHSETTINGS";
 111         else
 112                 section_name = "UNKNOWNKEY";
 113
 114         printf("%s (%x) "
 115                 "valid:%x "
 116                 "version:%x "
 117                 "reserved:%x "
 118                 "flags:%x\n",
 119                 section_name,
 120                 chs->section_key,
 121                 chs->valid,
 122                 chs->version,
 123                 chs->reserved,
 124                 chs->flags);
 125 }
 126
 127 static void omapimage_print_header(const void *ptr)
 128 {
 129         const struct ch_toc *toc = (struct ch_toc *)ptr;
 130         const struct gp_header *gph =
 131                         (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
 132         uint32_t offset, size;
 133
 134         while (toc->section_offset != 0xffffffff
 135                         && toc->section_size != 0xffffffff) {
 136                 offset = toc->section_offset;
 137                 size = toc->section_size;
 138
 139                 if (offset >= OMAP_CH_HDR_SIZE ||
 140                     offset+size >= OMAP_CH_HDR_SIZE)
 141                         exit(EXIT_FAILURE);
 142
 143                 printf("Section %s offset %x length %x\n",
 144                         toc->section_name,
 145                         toc->section_offset,
 146                         toc->section_size);
 147
 148                 omapimage_print_section((struct ch_settings *)(ptr+offset));
 149                 toc++;
 150         }
 151
 152         if (!valid_gph_size(gph->size)) {
 153                 fprintf(stderr,
 154                         "Error: invalid image size %x\n",
 155                         gph->size);
 156                 exit(EXIT_FAILURE);
 157         }
 158
 159         if (!valid_gph_load_addr(gph->load_addr)) {
 160                 fprintf(stderr,
 161                         "Error: invalid image load address %x\n",
 162                         gph->size);
 163                 exit(EXIT_FAILURE);
 164         }
 165
 166         printf("GP Header: Size %x LoadAddr %x\n",
 167                 gph->size, gph->load_addr);
 168 }
 169
 170 static int toc_offset(void *hdr, void *member)
 171 {
 172         return member - hdr;
 173 }
 174
 175 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 176                                 struct mkimage_params *params)
 177 {
 178         struct ch_toc *toc = (struct ch_toc *)ptr;
 179         struct ch_settings *chs = (struct ch_settings *)
 180                                         (ptr + 2 * sizeof(*toc));
 181         struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
 182
 183         toc->section_offset = toc_offset(ptr, chs);
 184         toc->section_size = sizeof(struct ch_settings);
 185         strcpy((char *)toc->section_name, "CHSETTINGS");
 186
 187         chs->section_key = KEY_CHSETTINGS;
 188         chs->valid = 0;
 189         chs->version = 1;
 190         chs->reserved = 0;
 191         chs->flags = 0;
 192
 193         toc++;
 194         memset(toc, 0xff, sizeof(*toc));
 195
 196         gph->size = sbuf->st_size - OMAP_FILE_HDR_SIZE;
 197         gph->load_addr = params->addr;
 198 }
 199
 200 int omapimage_check_params(struct mkimage_params *params)
 201 {
 202         return  (params->dflag && (params->fflag || params->lflag)) ||
 203                 (params->fflag && (params->dflag || params->lflag)) ||
 204                 (params->lflag && (params->dflag || params->fflag));
 205 }
 206
 207 /*
 208  * omapimage parameters
 209  */
 210 static struct image_type_params omapimage_params = {
 211         .name           = "TI OMAP CH/GP Boot Image support",
 212         .header_size    = OMAP_FILE_HDR_SIZE,
 213         .hdr            = (void *)&omapimage_header,
 214         .check_image_type = omapimage_check_image_types,
 215         .verify_header  = omapimage_verify_header,
 216         .print_header   = omapimage_print_header,
 217         .set_header     = omapimage_set_header,
 218         .check_params   = omapimage_check_params,
 219 };
 220
 221 void init_omap_image_type(void)
 222 {
 223         mkimage_register(&omapimage_params);
 224 }