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.
22 #include <asm/byteorder.h>
24 #if defined(CONFIG_8xx)
29 source (ulong addr, const char *fit_uname)
32 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
33 const image_header_t *hdr;
38 #if defined(CONFIG_FIT)
45 verify = getenv_yesno ("verify");
47 buf = map_sysmem(addr, 0);
48 switch (genimg_get_format(buf)) {
49 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
50 case IMAGE_FORMAT_LEGACY:
53 if (!image_check_magic (hdr)) {
54 puts ("Bad magic number\n");
58 if (!image_check_hcrc (hdr)) {
59 puts ("Bad header crc\n");
64 if (!image_check_dcrc (hdr)) {
65 puts ("Bad data crc\n");
70 if (!image_check_type (hdr, IH_TYPE_SCRIPT)) {
71 puts ("Bad image type\n");
75 /* get length of script */
76 data = (ulong *)image_get_data (hdr);
78 if ((len = uimage_to_cpu (*data)) == 0) {
79 puts ("Empty Script\n");
84 * scripts are just multi-image files with one component, seek
85 * past the zero-terminated sequence of image lengths to get
86 * to the actual image data
91 #if defined(CONFIG_FIT)
92 case IMAGE_FORMAT_FIT:
93 if (fit_uname == NULL) {
94 puts ("No FIT subimage unit name\n");
99 if (!fit_check_format (fit_hdr)) {
100 puts ("Bad FIT image format\n");
104 /* get script component image node offset */
105 noffset = fit_image_get_node (fit_hdr, fit_uname);
107 printf ("Can't find '%s' FIT subimage\n", fit_uname);
111 if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) {
112 puts ("Not a image image\n");
116 /* verify integrity */
118 if (!fit_image_verify(fit_hdr, noffset)) {
119 puts ("Bad Data Hash\n");
124 /* get script subimage data address and length */
125 if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
126 puts ("Could not find script subimage data\n");
130 data = (ulong *)fit_data;
131 len = (ulong)fit_len;
135 puts ("Wrong image format for \"source\" command\n");
139 debug ("** Script length: %ld\n", len);
140 return run_command_list((char *)data, len, 0);
143 /**************************************************/
144 #if defined(CONFIG_CMD_SOURCE)
145 static int do_source(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
149 const char *fit_uname = NULL;
151 /* Find script image */
153 addr = CONFIG_SYS_LOAD_ADDR;
154 debug ("* source: default load address = 0x%08lx\n", addr);
155 #if defined(CONFIG_FIT)
156 } else if (fit_parse_subimage (argv[1], load_addr, &addr, &fit_uname)) {
157 debug ("* source: subimage '%s' from FIT image at 0x%08lx\n",
161 addr = simple_strtoul(argv[1], NULL, 16);
162 debug ("* source: cmdline image address = 0x%08lx\n", addr);
165 printf ("## Executing script at %08lx\n", addr);
166 rcode = source (addr, fit_uname);
170 #ifdef CONFIG_SYS_LONGHELP
171 static char source_help_text[] =
173 "\t- run script starting at addr\n"
174 "\t- A valid image header must be present"
175 #if defined(CONFIG_FIT)
177 "For FIT format uImage addr must include subimage\n"
178 "unit name in the form of addr:<subimg_uname>"
184 source, 2, 0, do_source,
185 "run script from memory", source_help_text