xref: /openbmc/u-boot/common/main.c (revision 39cb4f3c)
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 # ifdef CONFIG_AUTOBOOT_KEYED
28 		int prev = disable_ctrlc(1);	/* disable Control C checking */
29 # endif
30 
31 		run_command_list(p, -1, 0);
32 
33 # ifdef CONFIG_AUTOBOOT_KEYED
34 		disable_ctrlc(prev);	/* restore Control C checking */
35 # endif
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 #ifdef CONFIG_VERSION_VARIABLE
48 	env_set("ver", version_string);  /* set version variable */
49 #endif /* CONFIG_VERSION_VARIABLE */
50 
51 	cli_init();
52 
53 	run_preboot_environment_command();
54 
55 #if defined(CONFIG_UPDATE_TFTP)
56 	update_tftp(0UL, NULL, NULL);
57 #endif /* CONFIG_UPDATE_TFTP */
58 
59 	s = bootdelay_process();
60 	if (cli_process_fdt(&s))
61 		cli_secure_boot_cmd(s);
62 
63 	autoboot_command(s);
64 
65 	cli_loop();
66 	panic("No CLI available");
67 }
68