cmd/source.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2001
   4  * Kyle Harris, kharris@nexus-tech.net
   5  */
   6
   7 /*
   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.
  13  */
  14
  15 /* #define DEBUG */
  16
  17 #include <command.h>
  18 #include <env.h>
  19 #include <image.h>
  20 #include <log.h>
  21 #include <malloc.h>
  22 #include <mapmem.h>
  23 #include <asm/byteorder.h>
  24 #include <asm/io.h>
  25
  26 static int do_source(struct cmd_tbl *cmdtp, int flag, int argc,
  27                      char *const argv[])
  28 {
  29         ulong addr;
  30         int rcode;
  31         const char *fit_uname = NULL, *confname = NULL;
  32
  33         /* Find script image */
  34         if (argc < 2) {
  35                 addr = CONFIG_SYS_LOAD_ADDR;
  36                 debug("*  source: default load address = 0x%08lx\n", addr);
  37 #if defined(CONFIG_FIT)
  38         } else if (fit_parse_subimage(argv[1], image_load_addr, &addr,
  39                                       &fit_uname)) {
  40                 debug("*  source: subimage '%s' from FIT image at 0x%08lx\n",
  41                       fit_uname, addr);
  42         } else if (fit_parse_conf(argv[1], image_load_addr, &addr, &confname)) {
  43                 debug("*  source: config '%s' from FIT image at 0x%08lx\n",
  44                       confname, addr);
  45 #endif
  46         } else {
  47                 addr = hextoul(argv[1], NULL);
  48                 debug("*  source: cmdline image address = 0x%08lx\n", addr);
  49         }
  50
  51         printf ("## Executing script at %08lx\n", addr);
  52         rcode = cmd_source_script(addr, fit_uname, confname);
  53         return rcode;
  54 }
  55
  56 U_BOOT_LONGHELP(source,
  57 #if defined(CONFIG_FIT)
  58         "[<addr>][:[<image>]|#[<config>]]\n"
  59         "\t- Run script starting at addr\n"
  60         "\t- A FIT config name or subimage name may be specified with : or #\n"
  61         "\t  (like bootm). If the image or config name is omitted, the\n"
  62         "\t  default is used."
  63 #else
  64         "[<addr>]\n"
  65         "\t- Run script starting at addr"
  66 #endif
  67         );
  68
  69 U_BOOT_CMD(
  70         source, 2, 0,   do_source,
  71         "run script from memory", source_help_text
  72 );