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 15 DECLARE_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 22 static 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 35 static 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 */ 56 void 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); 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