3 * Kyle Harris, kharris@nexus-tech.net
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * autoscript allows a remote host to download a command file and,
26 * optionally, binary data for automatically updating the target. For
27 * example, you create a new kernel image and want the user to be
28 * able to simply download the image and the machine does the rest.
29 * The kernel image is postprocessed with mkimage, which creates an
30 * image with a script file prepended. If enabled, autoscript will
31 * verify the script and contents of the download and execute the
32 * script portion. This would be responsible for erasing flash,
33 * copying the new image, and rebooting the machine.
42 #include <asm/byteorder.h>
43 #if defined(CONFIG_8xx)
46 #ifdef CFG_HUSH_PARSER
50 #if defined(CONFIG_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT)
53 autoscript (ulong addr, const char *fit_uname)
61 #if defined(CONFIG_FIT)
68 verify = getenv_verify ();
70 switch (genimg_get_format ((void *)addr)) {
71 case IMAGE_FORMAT_LEGACY:
72 hdr = (image_header_t *)addr;
74 if (!image_check_magic (hdr)) {
75 puts ("Bad magic number\n");
79 if (!image_check_hcrc (hdr)) {
80 puts ("Bad header crc\n");
85 if (!image_check_dcrc (hdr)) {
86 puts ("Bad data crc\n");
91 if (!image_check_type (hdr, IH_TYPE_SCRIPT)) {
92 puts ("Bad image type\n");
96 /* get length of script */
97 data = (ulong *)image_get_data (hdr);
99 if ((len = uimage_to_cpu (*data)) == 0) {
100 puts ("Empty Script\n");
104 #if defined(CONFIG_FIT)
105 case IMAGE_FORMAT_FIT:
106 if (fit_uname == NULL) {
107 puts ("No FIT subimage unit name\n");
111 fit_hdr = (const void *)addr;
112 if (!fit_check_format (fit_hdr)) {
113 puts ("Bad FIT image format\n");
117 /* get script component image node offset */
118 noffset = fit_image_get_node (fit_hdr, fit_uname);
120 printf ("Can't find '%s' FIT subimage\n", fit_uname);
124 if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) {
125 puts ("Not a image image\n");
129 /* verify integrity */
131 if (!fit_image_check_hashes (fit_hdr, noffset)) {
132 puts ("Bad Data Hash\n");
137 /* get script subimage data address and length */
138 if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
139 puts ("Could not find script subimage data\n");
143 data = (ulong *)fit_data;
144 len = (ulong)fit_len;
148 puts ("Wrong image format for autoscript\n");
152 debug ("** Script length: %ld\n", len);
154 if ((cmd = malloc (len + 1)) == NULL) {
160 /* make sure cmd is null terminated */
161 memmove (cmd, (char *)data, len);
164 #ifdef CFG_HUSH_PARSER /*?? */
165 rcode = parse_string_outer (cmd, FLAG_PARSE_SEMICOLON);
172 * break into individual lines,
173 * and execute each line;
174 * terminate on error.
179 /* run only non-empty commands */
180 if ((next - line) > 1) {
181 debug ("** exec: \"%s\"\n",
183 if (run_command (line, 0) < 0) {
200 /**************************************************/
201 #if defined(CONFIG_CMD_AUTOSCRIPT)
203 do_autoscript (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
207 const char *fit_uname = NULL;
209 /* Find script image */
211 addr = CFG_LOAD_ADDR;
212 debug ("* autoscr: default load address = 0x%08lx\n", addr);
213 #if defined(CONFIG_FIT)
214 } else if (fit_parse_subimage (argv[1], load_addr, &addr, &fit_uname)) {
215 debug ("* autoscr: subimage '%s' from FIT image at 0x%08lx\n",
219 addr = simple_strtoul(argv[1], NULL, 16);
220 debug ("* autoscr: cmdline image address = 0x%08lx\n", addr);
223 printf ("## Executing script at %08lx\n", addr);
224 rcode = autoscript (addr, fit_uname);
229 autoscr, 2, 0, do_autoscript,
230 "autoscr - run script from memory\n",
231 "[addr] - run script starting at addr"
232 " - A valid autoscr header must be present\n"
233 #if defined(CONFIG_FIT)
234 "For FIT format uImage addr must include subimage\n"
235 "unit name in the form of addr:<subimg_uname>\n"