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");
105 * scripts are just multi-image files with one component, seek
106 * past the zero-terminated sequence of image lengths to get
107 * to the actual image data
111 #if defined(CONFIG_FIT)
112 case IMAGE_FORMAT_FIT
:
113 if (fit_uname
== NULL
) {
114 puts ("No FIT subimage unit name\n");
118 fit_hdr
= (const void *)addr
;
119 if (!fit_check_format (fit_hdr
)) {
120 puts ("Bad FIT image format\n");
124 /* get script component image node offset */
125 noffset
= fit_image_get_node (fit_hdr
, fit_uname
);
127 printf ("Can't find '%s' FIT subimage\n", fit_uname
);
131 if (!fit_image_check_type (fit_hdr
, noffset
, IH_TYPE_SCRIPT
)) {
132 puts ("Not a image image\n");
136 /* verify integrity */
138 if (!fit_image_check_hashes (fit_hdr
, noffset
)) {
139 puts ("Bad Data Hash\n");
144 /* get script subimage data address and length */
145 if (fit_image_get_data (fit_hdr
, noffset
, &fit_data
, &fit_len
)) {
146 puts ("Could not find script subimage data\n");
150 data
= (ulong
*)fit_data
;
151 len
= (ulong
)fit_len
;
155 puts ("Wrong image format for autoscript\n");
159 debug ("** Script length: %ld\n", len
);
161 if ((cmd
= malloc (len
+ 1)) == NULL
) {
165 /* make sure cmd is null terminated */
166 memmove (cmd
, (char *)data
, len
);
169 #ifdef CFG_HUSH_PARSER /*?? */
170 rcode
= parse_string_outer (cmd
, FLAG_PARSE_SEMICOLON
);
177 * break into individual lines,
178 * and execute each line;
179 * terminate on error.
184 /* run only non-empty commands */
185 if ((next
- line
) > 1) {
186 debug ("** exec: \"%s\"\n",
188 if (run_command (line
, 0) < 0) {
205 /**************************************************/
206 #if defined(CONFIG_CMD_AUTOSCRIPT)
208 do_autoscript (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
212 const char *fit_uname
= NULL
;
214 /* Find script image */
216 addr
= CFG_LOAD_ADDR
;
217 debug ("* autoscr: default load address = 0x%08lx\n", addr
);
218 #if defined(CONFIG_FIT)
219 } else if (fit_parse_subimage (argv
[1], load_addr
, &addr
, &fit_uname
)) {
220 debug ("* autoscr: subimage '%s' from FIT image at 0x%08lx\n",
224 addr
= simple_strtoul(argv
[1], NULL
, 16);
225 debug ("* autoscr: cmdline image address = 0x%08lx\n", addr
);
228 printf ("## Executing script at %08lx\n", addr
);
229 rcode
= autoscript (addr
, fit_uname
);
234 autoscr
, 2, 0, do_autoscript
,
235 "autoscr - run script from memory\n",
236 "[addr] - run script starting at addr"
237 " - A valid autoscr header must be present\n"
238 #if defined(CONFIG_FIT)
239 "For FIT format uImage addr must include subimage\n"
240 "unit name in the form of addr:<subimg_uname>\n"