mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 11:00:15 +00:00
36cc8cbb33
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
243 lines
5.6 KiB
C
243 lines
5.6 KiB
C
/*
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* (C) Copyright 2001
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* Kyle Harris, kharris@nexus-tech.net
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* autoscript allows a remote host to download a command file and,
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* optionally, binary data for automatically updating the target. For
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* example, you create a new kernel image and want the user to be
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* able to simply download the image and the machine does the rest.
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* The kernel image is postprocessed with mkimage, which creates an
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* image with a script file prepended. If enabled, autoscript will
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* verify the script and contents of the download and execute the
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* script portion. This would be responsible for erasing flash,
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* copying the new image, and rebooting the machine.
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*/
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/* #define DEBUG */
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#include <common.h>
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#include <command.h>
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#include <image.h>
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#include <malloc.h>
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#include <asm/byteorder.h>
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#if defined(CONFIG_8xx)
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#include <mpc8xx.h>
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#endif
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#ifdef CFG_HUSH_PARSER
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#include <hush.h>
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#endif
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#if defined(CONFIG_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT)
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int
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autoscript (ulong addr, const char *fit_uname)
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{
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ulong len;
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image_header_t *hdr;
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ulong *data;
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char *cmd;
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int rcode = 0;
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int verify;
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#if defined(CONFIG_FIT)
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const void* fit_hdr;
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int noffset;
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const void *fit_data;
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size_t fit_len;
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#endif
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verify = getenv_verify ();
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switch (genimg_get_format ((void *)addr)) {
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case IMAGE_FORMAT_LEGACY:
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hdr = (image_header_t *)addr;
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if (!image_check_magic (hdr)) {
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puts ("Bad magic number\n");
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return 1;
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}
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if (!image_check_hcrc (hdr)) {
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puts ("Bad header crc\n");
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return 1;
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}
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if (verify) {
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if (!image_check_dcrc (hdr)) {
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puts ("Bad data crc\n");
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return 1;
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}
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}
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if (!image_check_type (hdr, IH_TYPE_SCRIPT)) {
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puts ("Bad image type\n");
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return 1;
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}
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/* get length of script */
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data = (ulong *)image_get_data (hdr);
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if ((len = uimage_to_cpu (*data)) == 0) {
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puts ("Empty Script\n");
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return 1;
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}
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/*
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* scripts are just multi-image files with one component, seek
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* past the zero-terminated sequence of image lengths to get
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* to the actual image data
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*/
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while (*data++);
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break;
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#if defined(CONFIG_FIT)
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case IMAGE_FORMAT_FIT:
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if (fit_uname == NULL) {
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puts ("No FIT subimage unit name\n");
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return 1;
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}
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fit_hdr = (const void *)addr;
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if (!fit_check_format (fit_hdr)) {
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puts ("Bad FIT image format\n");
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return 1;
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}
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/* get script component image node offset */
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noffset = fit_image_get_node (fit_hdr, fit_uname);
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if (noffset < 0) {
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printf ("Can't find '%s' FIT subimage\n", fit_uname);
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return 1;
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}
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if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) {
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puts ("Not a image image\n");
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return 1;
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}
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/* verify integrity */
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if (verify) {
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if (!fit_image_check_hashes (fit_hdr, noffset)) {
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puts ("Bad Data Hash\n");
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return 1;
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}
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}
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/* get script subimage data address and length */
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if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
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puts ("Could not find script subimage data\n");
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return 1;
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}
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data = (ulong *)fit_data;
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len = (ulong)fit_len;
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break;
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#endif
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default:
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puts ("Wrong image format for autoscript\n");
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return 1;
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}
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debug ("** Script length: %ld\n", len);
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if ((cmd = malloc (len + 1)) == NULL) {
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return 1;
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}
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/* make sure cmd is null terminated */
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memmove (cmd, (char *)data, len);
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*(cmd + len) = 0;
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#ifdef CFG_HUSH_PARSER /*?? */
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rcode = parse_string_outer (cmd, FLAG_PARSE_SEMICOLON);
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#else
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{
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char *line = cmd;
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char *next = cmd;
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/*
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* break into individual lines,
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* and execute each line;
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* terminate on error.
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*/
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while (*next) {
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if (*next == '\n') {
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*next = '\0';
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/* run only non-empty commands */
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if ((next - line) > 1) {
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debug ("** exec: \"%s\"\n",
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line);
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if (run_command (line, 0) < 0) {
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rcode = 1;
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break;
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}
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}
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line = next + 1;
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}
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++next;
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}
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}
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#endif
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free (cmd);
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return rcode;
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}
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#endif
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/**************************************************/
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#if defined(CONFIG_CMD_AUTOSCRIPT)
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int
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do_autoscript (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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ulong addr;
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int rcode;
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const char *fit_uname = NULL;
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/* Find script image */
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if (argc < 2) {
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addr = CFG_LOAD_ADDR;
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debug ("* autoscr: default load address = 0x%08lx\n", addr);
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#if defined(CONFIG_FIT)
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} else if (fit_parse_subimage (argv[1], load_addr, &addr, &fit_uname)) {
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debug ("* autoscr: subimage '%s' from FIT image at 0x%08lx\n",
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fit_uname, addr);
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#endif
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} else {
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addr = simple_strtoul(argv[1], NULL, 16);
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debug ("* autoscr: cmdline image address = 0x%08lx\n", addr);
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}
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printf ("## Executing script at %08lx\n", addr);
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rcode = autoscript (addr, fit_uname);
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return rcode;
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}
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U_BOOT_CMD(
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autoscr, 2, 0, do_autoscript,
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"autoscr - run script from memory\n",
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"[addr] - run script starting at addr"
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" - A valid autoscr header must be present\n"
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#if defined(CONFIG_FIT)
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"For FIT format uImage addr must include subimage\n"
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"unit name in the form of addr:<subimg_uname>\n"
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#endif
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);
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#endif
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