u-boot-jump-cmd.patch

   1 diff --git a/common/cmd_boot.c b/common/cmd_boot.c
   2 index d83f5af..0c34572 100644
   3 --- a/common/cmd_boot.c
   4 +++ b/common/cmd_boot.c
   5 @@ -34,8 +34,14 @@ unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
   6  {
   7         return entry (argc, argv);
   8  }
   9 +__attribute__((weak))
  10 +unsigned long do_jump_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
  11 +{
  12 +       return entry (argc, argv);
  13 +}
  14
  15 -int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  16 +int do_it (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
  17 +       unsigned long (*exec_hook)(ulong (*entry)(int, char *[]), int argc, char *argv[]))
  18  {
  19         ulong   addr, rc;
  20         int     rcode = 0;
  21 @@ -53,13 +59,22 @@ int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  22          * pass address parameter as argv[0] (aka command name),
  23          * and all remaining args
  24          */
  25 -       rc = do_go_exec ((void *)addr, argc - 1, argv + 1);
  26 +       rc = exec_hook ((void *)addr, argc - 1, argv + 1);
  27         if (rc != 0) rcode = 1;
  28
  29         printf ("## Application terminated, rc = 0x%lX\n", rc);
  30         return rcode;
  31  }
  32
  33 +int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  34 +{
  35 +       return do_it (cmdtp, flag, argc, argv, do_go_exec);
  36 +}
  37 +int do_jump (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  38 +{
  39 +       return do_it (cmdtp, flag, argc, argv, do_jump_exec);
  40 +}
  41 +
  42  /* -------------------------------------------------------------------- */
  43
  44  U_BOOT_CMD(
  45 @@ -69,6 +84,13 @@ U_BOOT_CMD(
  46         "      passing 'arg' as arguments\n"
  47  );
  48
  49 +U_BOOT_CMD(
  50 +       jump, CFG_MAXARGS, 1,   do_jump,
  51 +       "jump    - start executing code at address 'addr' and never return\n",
  52 +       "addr [arg ...]\n    - jump to address 'addr'\n"
  53 +       "      passing 'arg' as arguments\n"
  54 +);
  55 +
  56  extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  57
  58  U_BOOT_CMD(