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1 | /* | |
2 | * (C) Copyright 2001 | |
3 | * Kyle Harris, kharris@nexus-tech.net | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | /* | |
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. | |
14 | */ | |
15 | ||
16 | /* #define DEBUG */ | |
17 | ||
18 | #include <common.h> | |
19 | #include <command.h> | |
20 | #include <image.h> | |
21 | #include <malloc.h> | |
22 | #include <mapmem.h> | |
23 | #include <asm/byteorder.h> | |
24 | #include <asm/io.h> | |
25 | ||
26 | int | |
27 | source (ulong addr, const char *fit_uname) | |
28 | { | |
29 | ulong len; | |
30 | #if defined(CONFIG_IMAGE_FORMAT_LEGACY) | |
31 | const image_header_t *hdr; | |
32 | #endif | |
33 | u32 *data; | |
34 | int verify; | |
35 | void *buf; | |
36 | #if defined(CONFIG_FIT) | |
37 | const void* fit_hdr; | |
38 | int noffset; | |
39 | const void *fit_data; | |
40 | size_t fit_len; | |
41 | #endif | |
42 | ||
43 | verify = env_get_yesno("verify"); | |
44 | ||
45 | buf = map_sysmem(addr, 0); | |
46 | switch (genimg_get_format(buf)) { | |
47 | #if defined(CONFIG_IMAGE_FORMAT_LEGACY) | |
48 | case IMAGE_FORMAT_LEGACY: | |
49 | hdr = buf; | |
50 | ||
51 | if (!image_check_magic (hdr)) { | |
52 | puts ("Bad magic number\n"); | |
53 | return 1; | |
54 | } | |
55 | ||
56 | if (!image_check_hcrc (hdr)) { | |
57 | puts ("Bad header crc\n"); | |
58 | return 1; | |
59 | } | |
60 | ||
61 | if (verify) { | |
62 | if (!image_check_dcrc (hdr)) { | |
63 | puts ("Bad data crc\n"); | |
64 | return 1; | |
65 | } | |
66 | } | |
67 | ||
68 | if (!image_check_type (hdr, IH_TYPE_SCRIPT)) { | |
69 | puts ("Bad image type\n"); | |
70 | return 1; | |
71 | } | |
72 | ||
73 | /* get length of script */ | |
74 | data = (u32 *)image_get_data (hdr); | |
75 | ||
76 | if ((len = uimage_to_cpu (*data)) == 0) { | |
77 | puts ("Empty Script\n"); | |
78 | return 1; | |
79 | } | |
80 | ||
81 | /* | |
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 | |
85 | */ | |
86 | while (*data++); | |
87 | break; | |
88 | #endif | |
89 | #if defined(CONFIG_FIT) | |
90 | case IMAGE_FORMAT_FIT: | |
91 | if (fit_uname == NULL) { | |
92 | puts ("No FIT subimage unit name\n"); | |
93 | return 1; | |
94 | } | |
95 | ||
96 | fit_hdr = buf; | |
97 | if (!fit_check_format (fit_hdr)) { | |
98 | puts ("Bad FIT image format\n"); | |
99 | return 1; | |
100 | } | |
101 | ||
102 | /* get script component image node offset */ | |
103 | noffset = fit_image_get_node (fit_hdr, fit_uname); | |
104 | if (noffset < 0) { | |
105 | printf ("Can't find '%s' FIT subimage\n", fit_uname); | |
106 | return 1; | |
107 | } | |
108 | ||
109 | if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) { | |
110 | puts ("Not a image image\n"); | |
111 | return 1; | |
112 | } | |
113 | ||
114 | /* verify integrity */ | |
115 | if (verify) { | |
116 | if (!fit_image_verify(fit_hdr, noffset)) { | |
117 | puts ("Bad Data Hash\n"); | |
118 | return 1; | |
119 | } | |
120 | } | |
121 | ||
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"); | |
125 | return 1; | |
126 | } | |
127 | ||
128 | data = (u32 *)fit_data; | |
129 | len = (ulong)fit_len; | |
130 | break; | |
131 | #endif | |
132 | default: | |
133 | puts ("Wrong image format for \"source\" command\n"); | |
134 | return 1; | |
135 | } | |
136 | ||
137 | debug ("** Script length: %ld\n", len); | |
138 | return run_command_list((char *)data, len, 0); | |
139 | } | |
140 | ||
141 | /**************************************************/ | |
142 | #if defined(CONFIG_CMD_SOURCE) | |
143 | static int do_source(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
144 | { | |
145 | ulong addr; | |
146 | int rcode; | |
147 | const char *fit_uname = NULL; | |
148 | ||
149 | /* Find script image */ | |
150 | if (argc < 2) { | |
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", | |
156 | fit_uname, addr); | |
157 | #endif | |
158 | } else { | |
159 | addr = simple_strtoul(argv[1], NULL, 16); | |
160 | debug ("* source: cmdline image address = 0x%08lx\n", addr); | |
161 | } | |
162 | ||
163 | printf ("## Executing script at %08lx\n", addr); | |
164 | rcode = source (addr, fit_uname); | |
165 | return rcode; | |
166 | } | |
167 | ||
168 | #ifdef CONFIG_SYS_LONGHELP | |
169 | static char source_help_text[] = | |
170 | "[addr]\n" | |
171 | "\t- run script starting at addr\n" | |
172 | "\t- A valid image header must be present" | |
173 | #if defined(CONFIG_FIT) | |
174 | "\n" | |
175 | "For FIT format uImage addr must include subimage\n" | |
176 | "unit name in the form of addr:<subimg_uname>" | |
177 | #endif | |
178 | ""; | |
179 | #endif | |
180 | ||
181 | U_BOOT_CMD( | |
182 | source, 2, 0, do_source, | |
183 | "run script from memory", source_help_text | |
184 | ); | |
185 | #endif |