xref: /openbmc/u-boot/common/main.c (revision a9484aa7)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2000
4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5  */
6 
7 /* #define	DEBUG	*/
8 
9 #include <common.h>
10 #include <autoboot.h>
11 #include <cli.h>
12 #include <console.h>
13 #include <version.h>
14 
15 /*
16  * Board-specific Platform code can reimplement show_boot_progress () if needed
17  */
18 __weak void show_boot_progress(int val) {}
19 
20 static void run_preboot_environment_command(void)
21 {
22 #ifdef CONFIG_PREBOOT
23 	char *p;
24 
25 	p = env_get("preboot");
26 	if (p != NULL) {
27 		int prev = 0;
28 
29 		if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
30 			prev = disable_ctrlc(1); /* disable Ctrl-C checking */
31 
32 		run_command_list(p, -1, 0);
33 
34 		if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
35 			disable_ctrlc(prev);	/* restore Ctrl-C checking */
36 	}
37 #endif /* CONFIG_PREBOOT */
38 }
39 
40 /* We come here after U-Boot is initialised and ready to process commands */
41 void main_loop(void)
42 {
43 	const char *s;
44 
45 	bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");
46 
47 	if (IS_ENABLED(CONFIG_VERSION_VARIABLE))
48 		env_set("ver", version_string);  /* set version variable */
49 
50 	cli_init();
51 
52 	run_preboot_environment_command();
53 
54 	if (IS_ENABLED(CONFIG_UPDATE_TFTP))
55 		update_tftp(0UL, NULL, NULL);
56 
57 	s = bootdelay_process();
58 	if (cli_process_fdt(&s))
59 		cli_secure_boot_cmd(s);
60 
61 	autoboot_command(s);
62 
63 	cli_loop();
64 	panic("No CLI available");
65 }
66