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                 return EXIT_FAILURE;
  53         }
  54 }
  55
  56 /*
  57  * Only the simplest image type is currently supported:
  58  * TOC pointing to CHSETTINGS
  59  * TOC terminator
  60  * CHSETTINGS
  61  *
  62  * padding to OMAP_CH_HDR_SIZE bytes
  63  *
  64  * gp header
  65  *   size
  66  *   load_addr
  67  */
  68 static int valid_gph_size(uint32_t size)
  69 {
  70         return size;
  71 }
  72
  73 static int valid_gph_load_addr(uint32_t load_addr)
  74 {
  75         return load_addr;
  76 }
  77
  78 static int omapimage_verify_header(unsigned char *ptr, int image_size,
  79                         struct mkimage_params *params)
  80 {
  81         struct ch_toc *toc = (struct ch_toc *)ptr;
  82         struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
  83         uint32_t offset, size;
  84
  85         while (toc->section_offset != 0xffffffff
  86                         && toc->section_size != 0xffffffff) {
  87                 offset = toc->section_offset;
  88                 size = toc->section_size;
  89                 if (!offset || !size)
  90                         return -1;
  91                 if (offset >= OMAP_CH_HDR_SIZE ||
  92                     offset+size >= OMAP_CH_HDR_SIZE)
  93                         return -1;
  94                 toc++;
  95         }
  96         if (!valid_gph_size(gph->size))
  97                 return -1;
  98         if (!valid_gph_load_addr(gph->load_addr))
  99                 return -1;
 100
 101         return 0;
 102 }
 103
 104 static void omapimage_print_section(struct ch_settings *chs)
 105 {
 106         const char *section_name;
 107
 108         if (chs->section_key)
 109                 section_name = "CHSETTINGS";
 110         else
 111                 section_name = "UNKNOWNKEY";
 112
 113         printf("%s (%x) "
 114                 "valid:%x "
 115                 "version:%x "
 116                 "reserved:%x "
 117                 "flags:%x\n",
 118                 section_name,
 119                 chs->section_key,
 120                 chs->valid,
 121                 chs->version,
 122                 chs->reserved,
 123                 chs->flags);
 124 }
 125
 126 static void omapimage_print_header(const void *ptr)
 127 {
 128         const struct ch_toc *toc = (struct ch_toc *)ptr;
 129         const struct gp_header *gph =
 130                         (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
 131         uint32_t offset, size;
 132
 133         while (toc->section_offset != 0xffffffff
 134                         && toc->section_size != 0xffffffff) {
 135                 offset = toc->section_offset;
 136                 size = toc->section_size;
 137
 138                 if (offset >= OMAP_CH_HDR_SIZE ||
 139                     offset+size >= OMAP_CH_HDR_SIZE)
 140                         exit(EXIT_FAILURE);
 141
 142                 printf("Section %s offset %x length %x\n",
 143                         toc->section_name,
 144                         toc->section_offset,
 145                         toc->section_size);
 146
 147                 omapimage_print_section((struct ch_settings *)(ptr+offset));
 148                 toc++;
 149         }
 150
 151         if (!valid_gph_size(gph->size)) {
 152                 fprintf(stderr,
 153                         "Error: invalid image size %x\n",
 154                         gph->size);
 155                 exit(EXIT_FAILURE);
 156         }
 157
 158         if (!valid_gph_load_addr(gph->load_addr)) {
 159                 fprintf(stderr,
 160                         "Error: invalid image load address %x\n",
 161                         gph->size);
 162                 exit(EXIT_FAILURE);
 163         }
 164
 165         printf("GP Header: Size %x LoadAddr %x\n",
 166                 gph->size, gph->load_addr);
 167 }
 168
 169 static int toc_offset(void *hdr, void *member)
 170 {
 171         return member - hdr;
 172 }
 173
 174 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 175                                 struct mkimage_params *params)
 176 {
 177         struct ch_toc *toc = (struct ch_toc *)ptr;
 178         struct ch_settings *chs = (struct ch_settings *)
 179                                         (ptr + 2 * sizeof(*toc));
 180         struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
 181
 182         toc->section_offset = toc_offset(ptr, chs);
 183         toc->section_size = sizeof(struct ch_settings);
 184         strcpy((char *)toc->section_name, "CHSETTINGS");
 185
 186         chs->section_key = KEY_CHSETTINGS;
 187         chs->valid = 0;
 188         chs->version = 1;
 189         chs->reserved = 0;
 190         chs->flags = 0;
 191
 192         toc++;
 193         memset(toc, 0xff, sizeof(*toc));
 194
 195         gph->size = sbuf->st_size - OMAP_FILE_HDR_SIZE;
 196         gph->load_addr = params->addr;
 197 }
 198
 199 int omapimage_check_params(struct mkimage_params *params)
 200 {
 201         return  (params->dflag && (params->fflag || params->lflag)) ||
 202                 (params->fflag && (params->dflag || params->lflag)) ||
 203                 (params->lflag && (params->dflag || params->fflag));
 204 }
 205
 206 /*
 207  * omapimage parameters
 208  */
 209 static struct image_type_params omapimage_params = {
 210         .name           = "TI OMAP CH/GP Boot Image support",
 211         .header_size    = OMAP_FILE_HDR_SIZE,
 212         .hdr            = (void *)&omapimage_header,
 213         .check_image_type = omapimage_check_image_types,
 214         .verify_header  = omapimage_verify_header,
 215         .print_header   = omapimage_print_header,
 216         .set_header     = omapimage_set_header,
 217         .check_params   = omapimage_check_params,
 218 };
 219
 220 void init_omap_image_type(void)
 221 {
 222         mkimage_register(&omapimage_params);
 223 }