BALATON Zoltan | 866fd2a | 2018-02-20 18:02:45 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2001 |
| 3 | * Kyle Harris, kharris@nexus-tech.net |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 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, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * The "source" command allows to define "script images", i. e. files |
| 26 | * that contain command sequences that can be executed by the command |
| 27 | * interpreter. It returns the exit status of the last command |
| 28 | * executed from the script. This is very similar to running a shell |
| 29 | * script in a UNIX shell, hence the name for the command. |
| 30 | */ |
| 31 | |
| 32 | /* #define DEBUG */ |
| 33 | |
| 34 | #include <common.h> |
| 35 | #include <command.h> |
| 36 | #include <image.h> |
| 37 | #include <malloc.h> |
| 38 | #include <asm/byteorder.h> |
| 39 | #if defined(CONFIG_8xx) |
| 40 | #include <mpc8xx.h> |
| 41 | #endif |
| 42 | #ifdef CONFIG_SYS_HUSH_PARSER |
| 43 | #include <hush.h> |
| 44 | #endif |
| 45 | |
| 46 | int |
| 47 | source (ulong addr, const char *fit_uname) |
| 48 | { |
| 49 | ulong len; |
| 50 | image_header_t *hdr; |
| 51 | ulong *data; |
| 52 | char *cmd; |
| 53 | int rcode = 0; |
| 54 | int verify; |
| 55 | #if defined(CONFIG_FIT) |
| 56 | const void* fit_hdr; |
| 57 | int noffset; |
| 58 | const void *fit_data; |
| 59 | size_t fit_len; |
| 60 | #endif |
| 61 | |
| 62 | verify = getenv_yesno ("verify"); |
| 63 | |
| 64 | switch (genimg_get_format ((void *)addr)) { |
| 65 | case IMAGE_FORMAT_LEGACY: |
| 66 | hdr = (image_header_t *)addr; |
| 67 | |
| 68 | if (!image_check_magic (hdr)) { |
| 69 | puts ("Bad magic number\n"); |
| 70 | return 1; |
| 71 | } |
| 72 | |
| 73 | if (!image_check_hcrc (hdr)) { |
| 74 | puts ("Bad header crc\n"); |
| 75 | return 1; |
| 76 | } |
| 77 | |
| 78 | if (verify) { |
| 79 | if (!image_check_dcrc (hdr)) { |
| 80 | puts ("Bad data crc\n"); |
| 81 | return 1; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | if (!image_check_type (hdr, IH_TYPE_SCRIPT)) { |
| 86 | puts ("Bad image type\n"); |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | /* get length of script */ |
| 91 | data = (ulong *)image_get_data (hdr); |
| 92 | |
| 93 | if ((len = uimage_to_cpu (*data)) == 0) { |
| 94 | puts ("Empty Script\n"); |
| 95 | return 1; |
| 96 | } |
| 97 | |
| 98 | /* |
| 99 | * scripts are just multi-image files with one component, seek |
| 100 | * past the zero-terminated sequence of image lengths to get |
| 101 | * to the actual image data |
| 102 | */ |
| 103 | while (*data++); |
| 104 | break; |
| 105 | #if defined(CONFIG_FIT) |
| 106 | case IMAGE_FORMAT_FIT: |
| 107 | if (fit_uname == NULL) { |
| 108 | puts ("No FIT subimage unit name\n"); |
| 109 | return 1; |
| 110 | } |
| 111 | |
| 112 | fit_hdr = (const void *)addr; |
| 113 | if (!fit_check_format (fit_hdr)) { |
| 114 | puts ("Bad FIT image format\n"); |
| 115 | return 1; |
| 116 | } |
| 117 | |
| 118 | /* get script component image node offset */ |
| 119 | noffset = fit_image_get_node (fit_hdr, fit_uname); |
| 120 | if (noffset < 0) { |
| 121 | printf ("Can't find '%s' FIT subimage\n", fit_uname); |
| 122 | return 1; |
| 123 | } |
| 124 | |
| 125 | if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) { |
| 126 | puts ("Not a image image\n"); |
| 127 | return 1; |
| 128 | } |
| 129 | |
| 130 | /* verify integrity */ |
| 131 | if (verify) { |
| 132 | if (!fit_image_check_hashes (fit_hdr, noffset)) { |
| 133 | puts ("Bad Data Hash\n"); |
| 134 | return 1; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | /* get script subimage data address and length */ |
| 139 | if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) { |
| 140 | puts ("Could not find script subimage data\n"); |
| 141 | return 1; |
| 142 | } |
| 143 | |
| 144 | data = (ulong *)fit_data; |
| 145 | len = (ulong)fit_len; |
| 146 | break; |
| 147 | #endif |
| 148 | default: |
| 149 | puts ("Wrong image format for \"source\" command\n"); |
| 150 | return 1; |
| 151 | } |
| 152 | |
| 153 | debug ("** Script length: %ld\n", len); |
| 154 | |
| 155 | if ((cmd = malloc (len + 1)) == NULL) { |
| 156 | return 1; |
| 157 | } |
| 158 | |
| 159 | /* make sure cmd is null terminated */ |
| 160 | memmove (cmd, (char *)data, len); |
| 161 | *(cmd + len) = 0; |
| 162 | |
| 163 | #ifdef CONFIG_SYS_HUSH_PARSER /*?? */ |
| 164 | rcode = parse_string_outer (cmd, FLAG_PARSE_SEMICOLON); |
| 165 | #else |
| 166 | { |
| 167 | char *line = cmd; |
| 168 | char *next = cmd; |
| 169 | |
| 170 | /* |
| 171 | * break into individual lines, |
| 172 | * and execute each line; |
| 173 | * terminate on error. |
| 174 | */ |
| 175 | while (*next) { |
| 176 | if (*next == '\n') { |
| 177 | *next = '\0'; |
| 178 | /* run only non-empty commands */ |
| 179 | if (*line) { |
| 180 | debug ("** exec: \"%s\"\n", |
| 181 | line); |
| 182 | if (run_command (line, 0) < 0) { |
| 183 | rcode = 1; |
| 184 | break; |
| 185 | } |
| 186 | } |
| 187 | line = next + 1; |
| 188 | } |
| 189 | ++next; |
| 190 | } |
| 191 | if (rcode == 0 && *line) |
| 192 | rcode = (run_command(line, 0) >= 0); |
| 193 | } |
| 194 | #endif |
| 195 | free (cmd); |
| 196 | return rcode; |
| 197 | } |
| 198 | |
| 199 | /**************************************************/ |
| 200 | #if defined(CONFIG_CMD_SOURCE) |
| 201 | int |
| 202 | do_source (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
| 203 | { |
| 204 | ulong addr; |
| 205 | int rcode; |
| 206 | const char *fit_uname = NULL; |
| 207 | |
| 208 | /* Find script image */ |
| 209 | if (argc < 2) { |
| 210 | addr = CONFIG_SYS_LOAD_ADDR; |
| 211 | debug ("* source: default load address = 0x%08lx\n", addr); |
| 212 | #if defined(CONFIG_FIT) |
| 213 | } else if (fit_parse_subimage (argv[1], load_addr, &addr, &fit_uname)) { |
| 214 | debug ("* source: subimage '%s' from FIT image at 0x%08lx\n", |
| 215 | fit_uname, addr); |
| 216 | #endif |
| 217 | } else { |
| 218 | addr = simple_strtoul(argv[1], NULL, 16); |
| 219 | debug ("* source: cmdline image address = 0x%08lx\n", addr); |
| 220 | } |
| 221 | |
| 222 | printf ("## Executing script at %08lx\n", addr); |
| 223 | rcode = source (addr, fit_uname); |
| 224 | return rcode; |
| 225 | } |
| 226 | |
| 227 | U_BOOT_CMD( |
| 228 | source, 2, 0, do_source, |
| 229 | "run script from memory", |
| 230 | "[addr]\n" |
| 231 | "\t- run script starting at addr\n" |
| 232 | "\t- A valid image header must be present" |
| 233 | #if defined(CONFIG_FIT) |
| 234 | "\n" |
| 235 | "For FIT format uImage addr must include subimage\n" |
| 236 | "unit name in the form of addr:<subimg_uname>" |
| 237 | #endif |
| 238 | ); |
| 239 | #endif |