diff options
Diffstat (limited to 'tools/fit_image.c')
| -rw-r--r-- | tools/fit_image.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/tools/fit_image.c b/tools/fit_image.c new file mode 100644 index 0000000..d1e612f --- /dev/null +++ b/tools/fit_image.c @@ -0,0 +1,212 @@ +/* + * (C) Copyright 2008 Semihalf + * + * (C) Copyright 2000-2004 + * DENX Software Engineering + * Wolfgang Denk, wd@denx.de + * + * Updated-by: Prafulla Wadaskar <prafulla@marvell.com> + * FIT image specific code abstracted from mkimage.c + * some functions added to address abstraction + * + * All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include "mkimage.h" +#include <image.h> +#include <u-boot/crc.h> + +static image_header_t header; + +static int fit_verify_header (unsigned char *ptr, int image_size, + struct mkimage_params *params) +{ + return fdt_check_header ((void *)ptr); +} + +static int fit_check_image_types (uint8_t type) +{ + if (type == IH_TYPE_FLATDT) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +/** + * fit_handle_file - main FIT file processing function + * + * fit_handle_file() runs dtc to convert .its to .itb, includes + * binary data, updates timestamp property and calculates hashes. + * + * datafile - .its file + * imagefile - .itb file + * + * returns: + * only on success, otherwise calls exit (EXIT_FAILURE); + */ +static int fit_handle_file (struct mkimage_params *params) +{ + char tmpfile[MKIMAGE_MAX_TMPFILE_LEN]; + char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN]; + int tfd; + struct stat sbuf; + unsigned char *ptr; + + /* Flattened Image Tree (FIT) format handling */ + debug ("FIT format handling\n"); + + /* call dtc to include binary properties into the tmp file */ + if (strlen (params->imagefile) + + strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) { + fprintf (stderr, "%s: Image file name (%s) too long, " + "can't create tmpfile", + params->imagefile, params->cmdname); + return (EXIT_FAILURE); + } + sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX); + + /* dtc -I dts -O -p 200 datafile > tmpfile */ + sprintf (cmd, "%s %s %s > %s", + MKIMAGE_DTC, params->dtc, params->datafile, tmpfile); + debug ("Trying to execute \"%s\"\n", cmd); + if (system (cmd) == -1) { + fprintf (stderr, "%s: system(%s) failed: %s\n", + params->cmdname, cmd, strerror(errno)); + unlink (tmpfile); + return (EXIT_FAILURE); + } + + /* load FIT blob into memory */ + tfd = open (tmpfile, O_RDWR|O_BINARY); + + if (tfd < 0) { + fprintf (stderr, "%s: Can't open %s: %s\n", + params->cmdname, tmpfile, strerror(errno)); + unlink (tmpfile); + return (EXIT_FAILURE); + } + + if (fstat (tfd, &sbuf) < 0) { + fprintf (stderr, "%s: Can't stat %s: %s\n", + params->cmdname, tmpfile, strerror(errno)); + unlink (tmpfile); + return (EXIT_FAILURE); + } + + ptr = mmap (0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, + tfd, 0); + if (ptr == MAP_FAILED) { + fprintf (stderr, "%s: Can't read %s: %s\n", + params->cmdname, tmpfile, strerror(errno)); + unlink (tmpfile); + return (EXIT_FAILURE); + } + + /* check if ptr has a valid blob */ + if (fdt_check_header (ptr)) { + fprintf (stderr, "%s: Invalid FIT blob\n", params->cmdname); + unlink (tmpfile); + return (EXIT_FAILURE); + } + + /* set hashes for images in the blob */ + if (fit_set_hashes (ptr)) { + fprintf (stderr, "%s Can't add hashes to FIT blob", + params->cmdname); + unlink (tmpfile); + return (EXIT_FAILURE); + } + + /* add a timestamp at offset 0 i.e., root */ + if (fit_set_timestamp (ptr, 0, sbuf.st_mtime)) { + fprintf (stderr, "%s: Can't add image timestamp\n", + params->cmdname); + unlink (tmpfile); + return (EXIT_FAILURE); + } + debug ("Added timestamp successfully\n"); + + munmap ((void *)ptr, sbuf.st_size); + close (tfd); + + if (rename (tmpfile, params->imagefile) == -1) { + fprintf (stderr, "%s: Can't rename %s to %s: %s\n", + params->cmdname, tmpfile, params->imagefile, + strerror (errno)); + unlink (tmpfile); + unlink (params->imagefile); + return (EXIT_FAILURE); + } + return (EXIT_SUCCESS); +} + +static void fit_set_header (void *ptr, struct stat *sbuf, int ifd, + struct mkimage_params *params) +{ + uint32_t checksum; + + image_header_t * hdr = (image_header_t *)ptr; + + checksum = crc32 (0, + (const unsigned char *)(ptr + + sizeof(image_header_t)), + sbuf->st_size - sizeof(image_header_t)); + + /* Build new header */ + image_set_magic (hdr, IH_MAGIC); + image_set_time (hdr, sbuf->st_mtime); + image_set_size (hdr, sbuf->st_size - sizeof(image_header_t)); + image_set_load (hdr, params->addr); + image_set_ep (hdr, params->ep); + image_set_dcrc (hdr, checksum); + image_set_os (hdr, params->os); + image_set_arch (hdr, params->arch); + image_set_type (hdr, params->type); + image_set_comp (hdr, params->comp); + + image_set_name (hdr, params->imagename); + + checksum = crc32 (0, (const unsigned char *)hdr, + sizeof(image_header_t)); + + image_set_hcrc (hdr, checksum); +} + +static int fit_check_params (struct mkimage_params *params) +{ + return ((params->dflag && (params->fflag || params->lflag)) || + (params->fflag && (params->dflag || params->lflag)) || + (params->lflag && (params->dflag || params->fflag))); +} + +static struct image_type_params fitimage_params = { + .name = "FIT Image support", + .header_size = sizeof(image_header_t), + .hdr = (void*)&header, + .verify_header = fit_verify_header, + .print_header = fit_print_contents, + .check_image_type = fit_check_image_types, + .fflag_handle = fit_handle_file, + .set_header = fit_set_header, + .check_params = fit_check_params, +}; + +void init_fit_image_type (void) +{ + mkimage_register (&fitimage_params); +} |