1 // SPDX-License-Identifier: GPL-2.0+
8 * The "source" command allows to define "script images", i. e. files
9 * that contain command sequences that can be executed by the command
10 * interpreter. It returns the exit status of the last command
11 * executed from the script. This is very similar to running a shell
12 * script in a UNIX shell, hence the name for the command.
22 #include <asm/byteorder.h>
26 source (ulong addr, const char *fit_uname)
29 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
30 const image_header_t *hdr;
35 #if defined(CONFIG_FIT)
42 verify = env_get_yesno("verify");
44 buf = map_sysmem(addr, 0);
45 switch (genimg_get_format(buf)) {
46 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
47 case IMAGE_FORMAT_LEGACY:
50 if (!image_check_magic (hdr)) {
51 puts ("Bad magic number\n");
55 if (!image_check_hcrc (hdr)) {
56 puts ("Bad header crc\n");
61 if (!image_check_dcrc (hdr)) {
62 puts ("Bad data crc\n");
67 if (!image_check_type (hdr, IH_TYPE_SCRIPT)) {
68 puts ("Bad image type\n");
72 /* get length of script */
73 data = (u32 *)image_get_data (hdr);
75 if ((len = uimage_to_cpu (*data)) == 0) {
76 puts ("Empty Script\n");
81 * scripts are just multi-image files with one component, seek
82 * past the zero-terminated sequence of image lengths to get
83 * to the actual image data
88 #if defined(CONFIG_FIT)
89 case IMAGE_FORMAT_FIT:
90 if (fit_uname == NULL) {
91 puts ("No FIT subimage unit name\n");
96 if (!fit_check_format (fit_hdr)) {
97 puts ("Bad FIT image format\n");
101 /* get script component image node offset */
102 noffset = fit_image_get_node (fit_hdr, fit_uname);
104 printf ("Can't find '%s' FIT subimage\n", fit_uname);
108 if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) {
109 puts ("Not a image image\n");
113 /* verify integrity */
115 if (!fit_image_verify(fit_hdr, noffset)) {
116 puts ("Bad Data Hash\n");
121 /* get script subimage data address and length */
122 if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
123 puts ("Could not find script subimage data\n");
127 data = (u32 *)fit_data;
128 len = (ulong)fit_len;
132 puts ("Wrong image format for \"source\" command\n");
136 debug ("** Script length: %ld\n", len);
137 return run_command_list((char *)data, len, 0);
140 /**************************************************/
141 #if defined(CONFIG_CMD_SOURCE)
142 static int do_source(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
146 const char *fit_uname = NULL;
148 /* Find script image */
150 addr = CONFIG_SYS_LOAD_ADDR;
151 debug ("* source: default load address = 0x%08lx\n", addr);
152 #if defined(CONFIG_FIT)
153 } else if (fit_parse_subimage (argv[1], load_addr, &addr, &fit_uname)) {
154 debug ("* source: subimage '%s' from FIT image at 0x%08lx\n",
158 addr = simple_strtoul(argv[1], NULL, 16);
159 debug ("* source: cmdline image address = 0x%08lx\n", addr);
162 printf ("## Executing script at %08lx\n", addr);
163 rcode = source (addr, fit_uname);
167 #ifdef CONFIG_SYS_LONGHELP
168 static char source_help_text[] =
170 "\t- run script starting at addr\n"
171 "\t- A valid image header must be present"
172 #if defined(CONFIG_FIT)
174 "For FIT format uImage addr must include subimage\n"
175 "unit name in the form of addr:<subimg_uname>"
181 source, 2, 0, do_source,
182 "run script from memory", source_help_text