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 #define AUTOSCRIPT_MAGIC 0x09011962
51 #if defined(CONFIG_AUTOSCRIPT) || \
52 (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT )
54 extern image_header_t header; /* from cmd_bootm.c */
56 autoscript (ulong addr)
59 image_header_t *hdr = &header;
65 cmd = getenv ("verify");
66 verify = (cmd && (*cmd == 'n')) ? 0 : 1;
69 memmove (hdr, (char *)addr, sizeof(image_header_t));
71 if (ntohl(hdr->ih_magic) != IH_MAGIC) {
72 printf ("Bad magic number\n");
76 crc = ntohl(hdr->ih_hcrc);
78 len = sizeof (image_header_t);
80 if (crc32(0, (char *)data, len) != crc) {
81 printf ("Bad header crc\n");
85 data = addr + sizeof(image_header_t);
86 len = ntohl(hdr->ih_size);
89 if (crc32(0, (char *)data, len) != ntohl(hdr->ih_dcrc)) {
90 printf ("Bad data crc\n");
95 if (hdr->ih_type != IH_TYPE_SCRIPT) {
96 printf ("Bad image type\n");
100 /* get length of script */
101 len_ptr = (ulong *)data;
103 if ((len = ntohl(*len_ptr)) == 0) {
104 printf ("Empty Script\n");
108 debug ("** Script length: %ld\n", len);
110 if ((cmd = malloc (len + 1)) == NULL) {
116 /* make sure cmd is null terminated */
117 memmove (cmd, (char *)len_ptr, len);
120 #ifdef CFG_HUSH_PARSER /*?? */
121 rcode = parse_string_outer (cmd, FLAG_PARSE_SEMICOLON);
128 * break into individual lines,
129 * and execute each line;
130 * terminate on error.
135 /* run only non-empty commands */
136 if ((next - line) > 1) {
137 debug ("** exec: \"%s\"\n",
139 if (run_command (line, 0) < 0) {
154 #endif /* CONFIG_AUTOSCRIPT || CFG_CMD_AUTOSCRIPT */
155 /**************************************************/
156 #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT)
158 do_autoscript (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
164 addr = CFG_LOAD_ADDR;
166 addr = simple_strtoul (argv[1],0,16);
169 printf ("## Executing script at %08lx\n",addr);
170 rcode = autoscript (addr);
174 #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT)
175 cmd_tbl_t U_BOOT_CMD(AUTOSCRIPT) = MK_CMD_ENTRY(
176 "autoscr", 2, 0, do_autoscript,
177 "autoscr - run script from memory\n",
178 "[addr] - run script starting at addr"
179 " - A valid autoscr header must be present\n"
181 #endif /* CFG_CMD_AUTOSCRIPT */
183 #endif /* CONFIG_AUTOSCRIPT || CFG_CMD_AUTOSCRIPT */