1 /* 2 * (C) Copyright 2008 Semihalf 3 * 4 * (C) Copyright 2000-2004 5 * DENX Software Engineering 6 * Wolfgang Denk, wd@denx.de 7 * 8 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com> 9 * FIT image specific code abstracted from mkimage.c 10 * some functions added to address abstraction 11 * 12 * All rights reserved. 13 * 14 * This program is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU General Public License as 16 * published by the Free Software Foundation; either version 2 of 17 * the License, or (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 27 * MA 02111-1307 USA 28 */ 29 30 #include "mkimage.h" 31 #include <image.h> 32 #include <u-boot/crc.h> 33 34 static image_header_t header; 35 36 static int fit_verify_header (unsigned char *ptr, int image_size, 37 struct mkimage_params *params) 38 { 39 return fdt_check_header ((void *)ptr); 40 } 41 42 static int fit_check_image_types (uint8_t type) 43 { 44 if (type == IH_TYPE_FLATDT) 45 return EXIT_SUCCESS; 46 else 47 return EXIT_FAILURE; 48 } 49 50 /** 51 * fit_handle_file - main FIT file processing function 52 * 53 * fit_handle_file() runs dtc to convert .its to .itb, includes 54 * binary data, updates timestamp property and calculates hashes. 55 * 56 * datafile - .its file 57 * imagefile - .itb file 58 * 59 * returns: 60 * only on success, otherwise calls exit (EXIT_FAILURE); 61 */ 62 static int fit_handle_file (struct mkimage_params *params) 63 { 64 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN]; 65 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN]; 66 int tfd; 67 struct stat sbuf; 68 unsigned char *ptr; 69 70 /* Flattened Image Tree (FIT) format handling */ 71 debug ("FIT format handling\n"); 72 73 /* call dtc to include binary properties into the tmp file */ 74 if (strlen (params->imagefile) + 75 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) { 76 fprintf (stderr, "%s: Image file name (%s) too long, " 77 "can't create tmpfile", 78 params->imagefile, params->cmdname); 79 return (EXIT_FAILURE); 80 } 81 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX); 82 83 /* dtc -I dts -O -p 200 datafile > tmpfile */ 84 sprintf (cmd, "%s %s %s > %s", 85 MKIMAGE_DTC, params->dtc, params->datafile, tmpfile); 86 debug ("Trying to execute \"%s\"\n", cmd); 87 if (system (cmd) == -1) { 88 fprintf (stderr, "%s: system(%s) failed: %s\n", 89 params->cmdname, cmd, strerror(errno)); 90 unlink (tmpfile); 91 return (EXIT_FAILURE); 92 } 93 94 /* load FIT blob into memory */ 95 tfd = open (tmpfile, O_RDWR|O_BINARY); 96 97 if (tfd < 0) { 98 fprintf (stderr, "%s: Can't open %s: %s\n", 99 params->cmdname, tmpfile, strerror(errno)); 100 unlink (tmpfile); 101 return (EXIT_FAILURE); 102 } 103 104 if (fstat (tfd, &sbuf) < 0) { 105 fprintf (stderr, "%s: Can't stat %s: %s\n", 106 params->cmdname, tmpfile, strerror(errno)); 107 unlink (tmpfile); 108 return (EXIT_FAILURE); 109 } 110 111 ptr = mmap (0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, 112 tfd, 0); 113 if (ptr == MAP_FAILED) { 114 fprintf (stderr, "%s: Can't read %s: %s\n", 115 params->cmdname, tmpfile, strerror(errno)); 116 unlink (tmpfile); 117 return (EXIT_FAILURE); 118 } 119 120 /* check if ptr has a valid blob */ 121 if (fdt_check_header (ptr)) { 122 fprintf (stderr, "%s: Invalid FIT blob\n", params->cmdname); 123 unlink (tmpfile); 124 return (EXIT_FAILURE); 125 } 126 127 /* set hashes for images in the blob */ 128 if (fit_set_hashes (ptr)) { 129 fprintf (stderr, "%s Can't add hashes to FIT blob", 130 params->cmdname); 131 unlink (tmpfile); 132 return (EXIT_FAILURE); 133 } 134 135 /* add a timestamp at offset 0 i.e., root */ 136 if (fit_set_timestamp (ptr, 0, sbuf.st_mtime)) { 137 fprintf (stderr, "%s: Can't add image timestamp\n", 138 params->cmdname); 139 unlink (tmpfile); 140 return (EXIT_FAILURE); 141 } 142 debug ("Added timestamp successfully\n"); 143 144 munmap ((void *)ptr, sbuf.st_size); 145 close (tfd); 146 147 if (rename (tmpfile, params->imagefile) == -1) { 148 fprintf (stderr, "%s: Can't rename %s to %s: %s\n", 149 params->cmdname, tmpfile, params->imagefile, 150 strerror (errno)); 151 unlink (tmpfile); 152 unlink (params->imagefile); 153 return (EXIT_FAILURE); 154 } 155 return (EXIT_SUCCESS); 156 } 157 158 static int fit_check_params (struct mkimage_params *params) 159 { 160 return ((params->dflag && (params->fflag || params->lflag)) || 161 (params->fflag && (params->dflag || params->lflag)) || 162 (params->lflag && (params->dflag || params->fflag))); 163 } 164 165 static struct image_type_params fitimage_params = { 166 .name = "FIT Image support", 167 .header_size = sizeof(image_header_t), 168 .hdr = (void*)&header, 169 .verify_header = fit_verify_header, 170 .print_header = fit_print_contents, 171 .check_image_type = fit_check_image_types, 172 .fflag_handle = fit_handle_file, 173 .set_header = NULL, /* FIT images use DTB header */ 174 .check_params = fit_check_params, 175 }; 176 177 void init_fit_image_type (void) 178 { 179 mkimage_register (&fitimage_params); 180 } 181