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 <malloc.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 void inline __show_boot_progress (int val) {} 22 void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress"))); 23 24 static void modem_init(void) 25 { 26 #ifdef CONFIG_MODEM_SUPPORT 27 debug("DEBUG: main_loop: gd->do_mdm_init=%lu\n", gd->do_mdm_init); 28 if (gd->do_mdm_init) { 29 char *str = strdup(getenv("mdm_cmd")); 30 setenv("preboot", str); /* set or delete definition */ 31 if (str != NULL) 32 free(str); 33 mdm_init(); /* wait for modem connection */ 34 } 35 #endif /* CONFIG_MODEM_SUPPORT */ 36 } 37 38 static void run_preboot_environment_command(void) 39 { 40 #ifdef CONFIG_PREBOOT 41 char *p; 42 43 p = getenv("preboot"); 44 if (p != NULL) { 45 # ifdef CONFIG_AUTOBOOT_KEYED 46 int prev = disable_ctrlc(1); /* disable Control C checking */ 47 # endif 48 49 run_command_list(p, -1, 0); 50 51 # ifdef CONFIG_AUTOBOOT_KEYED 52 disable_ctrlc(prev); /* restore Control C checking */ 53 # endif 54 } 55 #endif /* CONFIG_PREBOOT */ 56 } 57 58 /* We come here after U-Boot is initialised and ready to process commands */ 59 void main_loop(void) 60 { 61 const char *s; 62 63 bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop"); 64 65 #ifndef CONFIG_SYS_GENERIC_BOARD 66 puts("Warning: Your board does not use generic board. Please read\n"); 67 puts("doc/README.generic-board and take action. Boards not\n"); 68 puts("upgraded by the late 2014 may break or be removed.\n"); 69 #endif 70 71 modem_init(); 72 #ifdef CONFIG_VERSION_VARIABLE 73 setenv("ver", version_string); /* set version variable */ 74 #endif /* CONFIG_VERSION_VARIABLE */ 75 76 cli_init(); 77 78 run_preboot_environment_command(); 79 80 #if defined(CONFIG_UPDATE_TFTP) 81 update_tftp(0UL); 82 #endif /* CONFIG_UPDATE_TFTP */ 83 84 s = bootdelay_process(); 85 if (cli_process_fdt(&s)) 86 cli_secure_boot_cmd(s); 87 88 autoboot_command(s); 89 90 cli_loop(); 91 } 92