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 modem_init(void) 24 { 25 #ifdef CONFIG_MODEM_SUPPORT 26 debug("DEBUG: main_loop: gd->do_mdm_init=%lu\n", gd->do_mdm_init); 27 if (gd->do_mdm_init) { 28 char *str = getenv("mdm_cmd"); 29 30 setenv("preboot", str); /* set or delete definition */ 31 mdm_init(); /* wait for modem connection */ 32 } 33 #endif /* CONFIG_MODEM_SUPPORT */ 34 } 35 36 static void run_preboot_environment_command(void) 37 { 38 #ifdef CONFIG_PREBOOT 39 char *p; 40 41 p = getenv("preboot"); 42 if (p != NULL) { 43 # ifdef CONFIG_AUTOBOOT_KEYED 44 int prev = disable_ctrlc(1); /* disable Control C checking */ 45 # endif 46 47 run_command_list(p, -1, 0); 48 49 # ifdef CONFIG_AUTOBOOT_KEYED 50 disable_ctrlc(prev); /* restore Control C checking */ 51 # endif 52 } 53 #endif /* CONFIG_PREBOOT */ 54 } 55 56 /* We come here after U-Boot is initialised and ready to process commands */ 57 void main_loop(void) 58 { 59 const char *s; 60 61 bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop"); 62 63 #ifndef CONFIG_SYS_GENERIC_BOARD 64 puts("Warning: Your board does not use generic board. Please read\n"); 65 puts("doc/README.generic-board and take action. Boards not\n"); 66 puts("upgraded by the late 2014 may break or be removed.\n"); 67 #endif 68 69 modem_init(); 70 #ifdef CONFIG_VERSION_VARIABLE 71 setenv("ver", version_string); /* set version variable */ 72 #endif /* CONFIG_VERSION_VARIABLE */ 73 74 cli_init(); 75 76 run_preboot_environment_command(); 77 78 #if defined(CONFIG_UPDATE_TFTP) 79 update_tftp(0UL, NULL, NULL); 80 #endif /* CONFIG_UPDATE_TFTP */ 81 82 s = bootdelay_process(); 83 if (cli_process_fdt(&s)) 84 cli_secure_boot_cmd(s); 85 86 autoboot_command(s); 87 88 cli_loop(); 89 } 90