tools/imximage.c

   1 /*
   2  * (C) Copyright 2009
   3  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
   4  *
   5  * (C) Copyright 2008
   6  * Marvell Semiconductor <www.marvell.com>
   7  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 /* Required to obtain the getline prototype from stdio.h */
  29 #define _GNU_SOURCE
  30
  31 #include "mkimage.h"
  32 #include <image.h>
  33 #include "imximage.h"
  34
  35 /*
  36  * Supported commands for configuration file
  37  */
  38 static table_entry_t imximage_cmds[] = {
  39         {CMD_BOOT_FROM,         "BOOT_FROM",            "boot command", },
  40         {CMD_DATA,              "DATA",                 "Reg Write Data", },
  41         {-1,            "",                     "",     },
  42 };
  43
  44 /*
  45  * Supported Boot options for configuration file
  46  * this is needed to set the correct flash offset
  47  */
  48 static table_entry_t imximage_bootops[] = {
  49         {FLASH_OFFSET_SPI,      "spi",          "SPI Flash",    },
  50         {FLASH_OFFSET_NAND,     "nand",         "NAND Flash",   },
  51         {FLASH_OFFSET_SD,       "sd",           "SD Card",      },
  52         {FLASH_OFFSET_ONENAND,  "onenand",      "OneNAND Flash",},
  53         {-1,                    "",             "Invalid",      },
  54 };
  55
  56
  57 static struct imx_header imximage_header;
  58
  59 static uint32_t get_cfg_value(char *token, char *name,  int linenr)
  60 {
  61         char *endptr;
  62         uint32_t value;
  63
  64         errno = 0;
  65         value = strtoul(token, &endptr, 16);
  66         if (errno || (token == endptr)) {
  67                 fprintf(stderr, "Error: %s[%d] - Invalid hex data(%s)\n",
  68                         name,  linenr, token);
  69                 exit(EXIT_FAILURE);
  70         }
  71         return value;
  72 }
  73
  74 static int imximage_check_image_types(uint8_t type)
  75 {
  76         if (type == IH_TYPE_IMXIMAGE)
  77                 return EXIT_SUCCESS;
  78         else
  79                 return EXIT_FAILURE;
  80 }
  81
  82 static int imximage_verify_header(unsigned char *ptr, int image_size,
  83                         struct mkimage_params *params)
  84 {
  85
  86         struct imx_header *imx_hdr = (struct imx_header *) ptr;
  87         flash_header_t *hdr = &imx_hdr->fhdr;
  88
  89         /* Only a few checks can be done: search for magic numbers */
  90         if (hdr->app_code_barker != APP_CODE_BARKER)
  91                 return -FDT_ERR_BADSTRUCTURE;
  92
  93         if (imx_hdr->dcd_table.preamble.barker != DCD_BARKER)
  94                 return -FDT_ERR_BADSTRUCTURE;
  95
  96         return 0;
  97 }
  98
  99 static void imximage_print_header(const void *ptr)
 100 {
 101         struct imx_header *imx_hdr = (struct imx_header *) ptr;
 102         flash_header_t *hdr = &imx_hdr->fhdr;
 103         uint32_t size;
 104         uint32_t length;
 105         dcd_t *dcd = &imx_hdr->dcd_table;
 106
 107         size = imx_hdr->dcd_table.preamble.length;
 108         if (size > (MAX_HW_CFG_SIZE * sizeof(dcd_type_addr_data_t))) {
 109                 fprintf(stderr,
 110                         "Error: Image corrupt DCD size %d exceed maximum %d\n",
 111                         (uint32_t)(size / sizeof(dcd_type_addr_data_t)),
 112                         MAX_HW_CFG_SIZE);
 113                 exit(EXIT_FAILURE);
 114         }
 115
 116         length =  dcd->preamble.length / sizeof(dcd_type_addr_data_t);
 117
 118         printf("Image Type:   Freescale IMX Boot Image\n");
 119         printf("Data Size:    ");
 120         genimg_print_size(dcd->addr_data[length].type);
 121         printf("Load Address: %08x\n", (unsigned int)hdr->app_dest_ptr);
 122         printf("Entry Point:  %08x\n", (unsigned int)hdr->app_code_jump_vector);
 123 }
 124
 125 static uint32_t imximage_parse_cfg_file(struct imx_header *imxhdr, char *name)
 126 {
 127         FILE *fd = NULL;
 128         char *line = NULL;
 129         char *token, *saveptr1, *saveptr2;
 130         int lineno = 0;
 131         int fld, value;
 132         size_t len;
 133         int dcd_len = 0;
 134         dcd_t *dcd = &imxhdr->dcd_table;
 135         int32_t cmd;
 136
 137         fd = fopen(name, "r");
 138         if (fd == 0) {
 139                 fprintf(stderr, "Error: %s - Can't open DCD file\n", name);
 140                 exit(EXIT_FAILURE);
 141         }
 142
 143         /* Very simple parsing, line starting with # are comments
 144          * and are dropped
 145          */
 146         while ((getline(&line, &len, fd)) > 0) {
 147                 lineno++;
 148
 149                 token = strtok_r(line, "\r\n", &saveptr1);
 150                 if (token == NULL)
 151                         continue;
 152
 153                 /* Check inside the single line */
 154                 for (fld = CFG_COMMAND, cmd = CMD_INVALID,
 155                                 line = token; ; line = NULL, fld++) {
 156                         token = strtok_r(line, " \t", &saveptr2);
 157                         if (token == NULL)
 158                                 break;
 159
 160                         /* Drop all text starting with '#' as comments */
 161                         if (token[0] == '#')
 162                                 break;
 163
 164                         /* parse all fields in a single line */
 165                         switch (fld) {
 166                         case CFG_COMMAND:
 167                                 cmd = get_table_entry_id(imximage_cmds,
 168                                         "imximage commands", token);
 169                                 if (cmd < 0) {
 170                                         fprintf(stderr,
 171                                                 "Error: %s[%d] - "
 172                                                 "Invalid command (%s)\n",
 173                                                 name, lineno, token);
 174                                         exit(EXIT_FAILURE);
 175                                 }
 176                                 break;
 177                         case CFG_REG_SIZE:
 178                                 switch (cmd) {
 179                                 case CMD_BOOT_FROM:
 180                                         /* Get flash header offset */
 181                                         imxhdr->flash_offset =
 182                                                 get_table_entry_id(
 183                                                         imximage_bootops,
 184                                                         "imximage boot option",
 185                                                         token);
 186                                         if (imxhdr->flash_offset == -1) {
 187                                                 fprintf(stderr,
 188                                                         "Error: %s[%d] -"
 189                                                         "Invalid boot device"
 190                                                         "(%s)\n",
 191                                                         name, lineno, token);
 192                                                 exit(EXIT_FAILURE);
 193                                         }
 194                                         break;
 195                                 case CMD_DATA:
 196                                         value = get_cfg_value(token,
 197                                                         name, lineno);
 198
 199                                         /* Byte, halfword, word */
 200                                         if ((value != 1) &&
 201                                                 (value != 2) && (value != 4)) {
 202                                                 fprintf(stderr,
 203                                                         "Error: %s[%d] - "
 204                                                         "Invalid register size "
 205                                                         "(%d)\n",
 206                                                         name, lineno, value);
 207                                                 exit(EXIT_FAILURE);
 208                                         }
 209                                         dcd->addr_data[dcd_len].type = value;
 210                                         break;
 211                                 }
 212
 213                         case CFG_REG_ADDRESS:
 214                                 if (cmd == CMD_DATA)
 215                                         dcd->addr_data[dcd_len].addr =
 216                                                 get_cfg_value(token,
 217                                                         name, lineno);
 218                                 break;
 219                         case CFG_REG_VALUE:
 220                                 if (cmd == CMD_DATA) {
 221                                         dcd->addr_data[dcd_len].value =
 222                                                 get_cfg_value(token,
 223                                                         name, lineno);
 224                                         dcd_len++;
 225                                 }
 226                                 break;
 227                         }
 228                 }
 229
 230                 if (dcd_len > MAX_HW_CFG_SIZE) {
 231                         fprintf(stderr,
 232                                 "Error: %s[%d] -"
 233                                 "DCD table exceeds maximum size(%d)\n",
 234                                 name, lineno, MAX_HW_CFG_SIZE);
 235                 }
 236         }
 237         dcd->preamble.barker = DCD_BARKER;
 238         dcd->preamble.length = dcd_len * sizeof(dcd_type_addr_data_t);
 239         fclose(fd);
 240
 241         return dcd_len;
 242 }
 243
 244 static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd,
 245                                 struct mkimage_params *params)
 246 {
 247         struct imx_header *hdr = (struct imx_header *)ptr;
 248         flash_header_t *fhdr = &hdr->fhdr;
 249         int dcd_len;
 250         dcd_t *dcd = &hdr->dcd_table;
 251         uint32_t base_offset;
 252
 253         /* Set default offset */
 254         hdr->flash_offset = FLASH_OFFSET_STANDARD;
 255
 256         /* Set magic number */
 257         fhdr->app_code_barker = APP_CODE_BARKER;
 258
 259         /* Parse dcd configuration file */
 260         dcd_len = imximage_parse_cfg_file(hdr, params->imagename);
 261
 262         fhdr->app_dest_ptr = params->addr;
 263         fhdr->app_dest_ptr = params->ep - hdr->flash_offset -
 264                 sizeof(struct imx_header);
 265         fhdr->app_code_jump_vector = params->ep;
 266
 267         base_offset = fhdr->app_dest_ptr + hdr->flash_offset ;
 268         fhdr->dcd_ptr_ptr = (uint32_t) (offsetof(flash_header_t, dcd_ptr) -
 269                 offsetof(flash_header_t, app_code_jump_vector) +
 270                 base_offset);
 271
 272         fhdr->dcd_ptr = base_offset +
 273                         offsetof(struct imx_header, dcd_table);
 274
 275         /* The external flash header must be at the end of the DCD table */
 276         dcd->addr_data[dcd_len].type = sbuf->st_size +
 277                                 hdr->flash_offset +
 278                                 sizeof(struct imx_header);
 279
 280         /* Security feature are not supported */
 281         fhdr->app_code_csf = 0;
 282         fhdr->super_root_key = 0;
 283
 284 }
 285
 286 int imximage_check_params(struct mkimage_params *params)
 287 {
 288         if (!params)
 289                 return CFG_INVALID;
 290         if (!strlen(params->imagename)) {
 291                 fprintf(stderr, "Error: %s - Configuration file not specified, "
 292                         "it is needed for imximage generation\n",
 293                         params->cmdname);
 294                 return CFG_INVALID;
 295         }
 296         /*
 297          * Check parameters:
 298          * XIP is not allowed and verify that incompatible
 299          * parameters are not sent at the same time
 300          * For example, if list is required a data image must not be provided
 301          */
 302         return  (params->dflag && (params->fflag || params->lflag)) ||
 303                 (params->fflag && (params->dflag || params->lflag)) ||
 304                 (params->lflag && (params->dflag || params->fflag)) ||
 305                 (params->xflag) || !(strlen(params->imagename));
 306 }
 307
 308 /*
 309  * imximage parameters
 310  */
 311 static struct image_type_params imximage_params = {
 312         .name           = "Freescale i.MX 51 Boot Image support",
 313         .header_size    = sizeof(struct imx_header),
 314         .hdr            = (void *)&imximage_header,
 315         .check_image_type = imximage_check_image_types,
 316         .verify_header  = imximage_verify_header,
 317         .print_header   = imximage_print_header,
 318         .set_header     = imximage_set_header,
 319         .check_params   = imximage_check_params,
 320 };
 321
 322 void init_imx_image_type(void)
 323 {
 324         mkimage_register(&imximage_params);
 325 }