3 * Kyle Harris, kharris@nexus-tech.net
5 * SPDX-License-Identifier: GPL-2.0+
9 * The "source" command allows to define "script images", i. e. files
10 * that contain command sequences that can be executed by the command
11 * interpreter. It returns the exit status of the last command
12 * executed from the script. This is very similar to running a shell
13 * script in a UNIX shell, hence the name for the command.
23 #include <asm/byteorder.h>
27 source (ulong addr, const char *fit_uname)
30 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
31 const image_header_t *hdr;
36 #if defined(CONFIG_FIT)
43 verify = env_get_yesno("verify");
45 buf = map_sysmem(addr, 0);
46 switch (genimg_get_format(buf)) {
47 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
48 case IMAGE_FORMAT_LEGACY:
51 if (!image_check_magic (hdr)) {
52 puts ("Bad magic number\n");
56 if (!image_check_hcrc (hdr)) {
57 puts ("Bad header crc\n");
62 if (!image_check_dcrc (hdr)) {
63 puts ("Bad data crc\n");
68 if (!image_check_type (hdr, IH_TYPE_SCRIPT)) {
69 puts ("Bad image type\n");
73 /* get length of script */
74 data = (u32 *)image_get_data (hdr);
76 if ((len = uimage_to_cpu (*data)) == 0) {
77 puts ("Empty Script\n");
82 * scripts are just multi-image files with one component, seek
83 * past the zero-terminated sequence of image lengths to get
84 * to the actual image data
89 #if defined(CONFIG_FIT)
90 case IMAGE_FORMAT_FIT:
91 if (fit_uname == NULL) {
92 puts ("No FIT subimage unit name\n");
97 if (!fit_check_format (fit_hdr)) {
98 puts ("Bad FIT image format\n");
102 /* get script component image node offset */
103 noffset = fit_image_get_node (fit_hdr, fit_uname);
105 printf ("Can't find '%s' FIT subimage\n", fit_uname);
109 if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) {
110 puts ("Not a image image\n");
114 /* verify integrity */
116 if (!fit_image_verify(fit_hdr, noffset)) {
117 puts ("Bad Data Hash\n");
122 /* get script subimage data address and length */
123 if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
124 puts ("Could not find script subimage data\n");
128 data = (u32 *)fit_data;
129 len = (ulong)fit_len;
133 puts ("Wrong image format for \"source\" command\n");
137 debug ("** Script length: %ld\n", len);
138 return run_command_list((char *)data, len, 0);
141 /**************************************************/
142 #if defined(CONFIG_CMD_SOURCE)
143 static int do_source(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
147 const char *fit_uname = NULL;
149 /* Find script image */
151 addr = CONFIG_SYS_LOAD_ADDR;
152 debug ("* source: default load address = 0x%08lx\n", addr);
153 #if defined(CONFIG_FIT)
154 } else if (fit_parse_subimage (argv[1], load_addr, &addr, &fit_uname)) {
155 debug ("* source: subimage '%s' from FIT image at 0x%08lx\n",
159 addr = simple_strtoul(argv[1], NULL, 16);
160 debug ("* source: cmdline image address = 0x%08lx\n", addr);
163 printf ("## Executing script at %08lx\n", addr);
164 rcode = source (addr, fit_uname);
168 #ifdef CONFIG_SYS_LONGHELP
169 static char source_help_text[] =
171 "\t- run script starting at addr\n"
172 "\t- A valid image header must be present"
173 #if defined(CONFIG_FIT)
175 "For FIT format uImage addr must include subimage\n"
176 "unit name in the form of addr:<subimg_uname>"
182 source, 2, 0, do_source,
183 "run script from memory", source_help_text