LXR uboot/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 <version.h>
  14
  15DECLARE_GLOBAL_DATA_PTR;
  16
  17/*
  18 * Board-specific Platform code can reimplement show_boot_progress () if needed
  19 */
  20__weak void show_boot_progress(int val) {}
  21
  22static void modem_init(void)
  23{
  24#ifdef CONFIG_MODEM_SUPPORT
  25        debug("DEBUG: main_loop:   gd->do_mdm_init=%lu\n", gd->do_mdm_init);
  26        if (gd->do_mdm_init) {
  27                char *str = getenv("mdm_cmd");
  28
  29                setenv("preboot", str);  /* set or delete definition */
  30                mdm_init(); /* wait for modem connection */
  31        }
  32#endif  /* CONFIG_MODEM_SUPPORT */
  33}
  34
  35static void run_preboot_environment_command(void)
  36{
  37#ifdef CONFIG_PREBOOT
  38        char *p;
  39
  40        p = getenv("preboot");
  41        if (p != NULL) {
  42# ifdef CONFIG_AUTOBOOT_KEYED
  43                int prev = disable_ctrlc(1);    /* disable Control C checking */
  44# endif
  45
  46                run_command_list(p, -1, 0);
  47
  48# ifdef CONFIG_AUTOBOOT_KEYED
  49                disable_ctrlc(prev);    /* restore Control C checking */
  50# endif
  51        }
  52#endif /* CONFIG_PREBOOT */
  53}
  54
  55/* We come here after U-Boot is initialised and ready to process commands */
  56void main_loop(void)
  57{
  58        const char *s;
  59
  60        bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");
  61
  62#ifndef CONFIG_SYS_GENERIC_BOARD
  63        puts("Warning: Your board does not use generic board. Please read\n");
  64        puts("doc/README.generic-board and take action. Boards not\n");
  65        puts("upgraded by the late 2014 may break or be removed.\n");
  66#endif
  67
  68        modem_init();
  69#ifdef CONFIG_VERSION_VARIABLE
  70        setenv("ver", version_string);  /* set version variable */
  71#endif /* CONFIG_VERSION_VARIABLE */
  72
  73        cli_init();
  74
  75        run_preboot_environment_command();
  76
  77#if defined(CONFIG_UPDATE_TFTP)
  78        update_tftp(0UL, NULL, NULL);
  79#endif /* CONFIG_UPDATE_TFTP */
  80
  81        s = bootdelay_process();
  82        if (cli_process_fdt(&s))
  83                cli_secure_boot_cmd(s);
  84
  85        autoboot_command(s);
  86
  87        cli_loop();
  88}
  89