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"Das U-Boot" Source Tree
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 <autoboot.h>
10#include <button.h>
11#include <bootstage.h>
12#include <bootstd.h>
13#include <cli.h>
14#include <command.h>
15#include <console.h>
16#include <env.h>
17#include <fdtdec.h>
18#include <init.h>
19#include <net.h>
20#include <version_string.h>
21#include <efi_loader.h>
22
23static void run_preboot_environment_command(void)
24{
25 char *p;
26
27 p = env_get("preboot");
28 if (p != NULL) {
29 int prev = 0;
30
31 if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
32 prev = disable_ctrlc(1); /* disable Ctrl-C checking */
33
34 run_command_list(p, -1, 0);
35
36 if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
37 disable_ctrlc(prev); /* restore Ctrl-C checking */
38 }
39}
40
41/* We come here after U-Boot is initialised and ready to process commands */
42void main_loop(void)
43{
44 const char *s;
45
46 bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");
47
48 if (IS_ENABLED(CONFIG_VERSION_VARIABLE))
49 env_set("ver", version_string); /* set version variable */
50
51 cli_init();
52
53 if (IS_ENABLED(CONFIG_USE_PREBOOT))
54 run_preboot_environment_command();
55
56 if (IS_ENABLED(CONFIG_UPDATE_TFTP))
57 update_tftp(0UL, NULL, NULL);
58
59 if (IS_ENABLED(CONFIG_EFI_CAPSULE_ON_DISK_EARLY)) {
60 /* efi_init_early() already called */
61 if (efi_init_obj_list() == EFI_SUCCESS)
62 efi_launch_capsules();
63 }
64
65 process_button_cmds();
66
67 s = bootdelay_process();
68 if (cli_process_fdt(&s))
69 cli_secure_boot_cmd(s);
70
71 autoboot_command(s);
72
73 /* if standard boot if enabled, assume that it will be able to boot */
74 if (IS_ENABLED(CONFIG_BOOTSTD_PROG)) {
75 int ret;
76
77 ret = bootstd_prog_boot();
78 printf("Standard boot failed (err=%dE)\n", ret);
79 panic("Failed to boot");
80 }
81
82 cli_loop();
83
84 panic("No CLI available");
85}