common/main.c

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /* #define      DEBUG   */
   9
  10 #include <common.h>
  11 #include <autoboot.h>
  12 #include <cli.h>
  13 #include <console.h>
  14 #include <version.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 /*
  19  * Board-specific Platform code can reimplement show_boot_progress () if needed
  20  */
  21 __weak void show_boot_progress(int val) {}
  22
  23 static void run_preboot_environment_command(void)
  24 {
  25 #ifdef CONFIG_PREBOOT
  26         char *p;
  27
  28         p = getenv("preboot");
  29         if (p != NULL) {
  30 # ifdef CONFIG_AUTOBOOT_KEYED
  31                 int prev = disable_ctrlc(1);    /* disable Control C checking */
  32 # endif
  33
  34                 run_command_list(p, -1, 0);
  35
  36 # ifdef CONFIG_AUTOBOOT_KEYED
  37                 disable_ctrlc(prev);    /* restore Control C checking */
  38 # endif
  39         }
  40 #endif /* CONFIG_PREBOOT */
  41 }
  42
  43 /* We come here after U-Boot is initialised and ready to process commands */
  44 void main_loop(void)
  45 {
  46         const char *s;
  47
  48         bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");
  49
  50 #ifndef CONFIG_SYS_GENERIC_BOARD
  51         puts("Warning: Your board does not use generic board. Please read\n");
  52         puts("doc/README.generic-board and take action. Boards not\n");
  53         puts("upgraded by the late 2014 may break or be removed.\n");
  54 #endif
  55
  56 #ifdef CONFIG_VERSION_VARIABLE
  57         setenv("ver", version_string);  /* set version variable */
  58 #endif /* CONFIG_VERSION_VARIABLE */
  59
  60         cli_init();
  61
  62         run_preboot_environment_command();
  63
  64 #if defined(CONFIG_UPDATE_TFTP)
  65         update_tftp(0UL, NULL, NULL);
  66 #endif /* CONFIG_UPDATE_TFTP */
  67
  68         s = bootdelay_process();
  69         if (cli_process_fdt(&s))
  70                 cli_secure_boot_cmd(s);
  71
  72         autoboot_command(s);
  73
  74         cli_loop();
  75 }