xref: /openbmc/u-boot/common/main.c (revision a2e3b05e)
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 run_preboot_environment_command(void)
24 {
25 #ifdef CONFIG_PREBOOT
26 	char *p;
27 
28 	p = getenv("preboot");
29 	if (p != NULL) {
30 # ifdef CONFIG_AUTOBOOT_KEYED
31 		int prev = disable_ctrlc(1);	/* disable Control C checking */
32 # endif
33 
34 		run_command_list(p, -1, 0);
35 
36 # ifdef CONFIG_AUTOBOOT_KEYED
37 		disable_ctrlc(prev);	/* restore Control C checking */
38 # endif
39 	}
40 #endif /* CONFIG_PREBOOT */
41 }
42 
43 /* We come here after U-Boot is initialised and ready to process commands */
44 void main_loop(void)
45 {
46 	const char *s;
47 
48 	bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");
49 
50 #ifndef CONFIG_SYS_GENERIC_BOARD
51 	puts("Warning: Your board does not use generic board. Please read\n");
52 	puts("doc/README.generic-board and take action. Boards not\n");
53 	puts("upgraded by the late 2014 may break or be removed.\n");
54 #endif
55 
56 #ifdef CONFIG_VERSION_VARIABLE
57 	setenv("ver", version_string);  /* set version variable */
58 #endif /* CONFIG_VERSION_VARIABLE */
59 
60 	cli_init();
61 
62 	run_preboot_environment_command();
63 
64 #if defined(CONFIG_UPDATE_TFTP)
65 	update_tftp(0UL, NULL, NULL);
66 #endif /* CONFIG_UPDATE_TFTP */
67 
68 	s = bootdelay_process();
69 	if (cli_process_fdt(&s))
70 		cli_secure_boot_cmd(s);
71 
72 	autoboot_command(s);
73 
74 	cli_loop();
75 }
76