common/main.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  */
   6
   7 /* #define      DEBUG   */
   8
   9 #include <common.h>
  10 #include <autoboot.h>
  11 #include <cli.h>
  12 #include <console.h>
  13 #include <version.h>
  14
  15 /*
  16  * Board-specific Platform code can reimplement show_boot_progress () if needed
  17  */
  18 __weak void show_boot_progress(int val) {}
  19
  20 static void run_preboot_environment_command(void)
  21 {
  22 #ifdef CONFIG_PREBOOT
  23         char *p;
  24
  25         p = env_get("preboot");
  26         if (p != NULL) {
  27                 int prev = 0;
  28
  29                 if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
  30                         prev = disable_ctrlc(1); /* disable Ctrl-C checking */
  31
  32                 run_command_list(p, -1, 0);
  33
  34                 if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
  35                         disable_ctrlc(prev);    /* restore Ctrl-C checking */
  36         }
  37 #endif /* CONFIG_PREBOOT */
  38 }
  39
  40 /* We come here after U-Boot is initialised and ready to process commands */
  41 void main_loop(void)
  42 {
  43         const char *s;
  44
  45         bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");
  46
  47         if (IS_ENABLED(CONFIG_VERSION_VARIABLE))
  48                 env_set("ver", version_string);  /* set version variable */
  49
  50         cli_init();
  51
  52         run_preboot_environment_command();
  53
  54         if (IS_ENABLED(CONFIG_UPDATE_TFTP))
  55                 update_tftp(0UL, NULL, NULL);
  56
  57         s = bootdelay_process();
  58         if (cli_process_fdt(&s))
  59                 cli_secure_boot_cmd(s);
  60
  61         autoboot_command(s);
  62
  63         cli_loop();
  64         panic("No CLI available");
  65 }