155 lines
3.5 KiB
C
155 lines
3.5 KiB
C
/*
|
|
* (C) Copyright 2002-2006
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#ifdef CONFIG_DEBUG_INITCALLS
|
|
#define DEBUG
|
|
#endif
|
|
|
|
/**
|
|
* @file
|
|
* @brief Main entry into the C part of barebox
|
|
*/
|
|
#include <common.h>
|
|
#include <shell.h>
|
|
#include <init.h>
|
|
#include <command.h>
|
|
#include <malloc.h>
|
|
#include <debug_ll.h>
|
|
#include <fs.h>
|
|
#include <errno.h>
|
|
#include <linux/stat.h>
|
|
#include <envfs.h>
|
|
#include <asm/sections.h>
|
|
#include <uncompress.h>
|
|
#include <globalvar.h>
|
|
|
|
extern initcall_t __barebox_initcalls_start[], __barebox_early_initcalls_end[],
|
|
__barebox_initcalls_end[];
|
|
|
|
extern exitcall_t __barebox_exitcalls_start[], __barebox_exitcalls_end[];
|
|
|
|
|
|
#if defined CONFIG_FS_RAMFS && defined CONFIG_FS_DEVFS
|
|
static int mount_root(void)
|
|
{
|
|
mount("none", "ramfs", "/", NULL);
|
|
mkdir("/dev", 0);
|
|
mount("none", "devfs", "/dev", NULL);
|
|
|
|
if (IS_ENABLED(CONFIG_FS_EFIVARFS)) {
|
|
mkdir("/efivars", 0);
|
|
mount("none", "efivarfs", "/efivars", NULL);
|
|
}
|
|
|
|
if (IS_ENABLED(CONFIG_FS_PSTORE)) {
|
|
mkdir("/pstore", 0);
|
|
mount("none", "pstore", "/pstore", NULL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
fs_initcall(mount_root);
|
|
#endif
|
|
|
|
#ifdef CONFIG_ENV_HANDLING
|
|
static int load_environment(void)
|
|
{
|
|
const char *default_environment_path;
|
|
|
|
default_environment_path = default_environment_path_get();
|
|
|
|
if (IS_ENABLED(CONFIG_DEFAULT_ENVIRONMENT))
|
|
defaultenv_load("/env", 0);
|
|
|
|
envfs_load(default_environment_path, "/env", 0);
|
|
nvvar_load();
|
|
|
|
return 0;
|
|
}
|
|
environment_initcall(load_environment);
|
|
#endif
|
|
|
|
int (*barebox_main)(void);
|
|
|
|
void __noreturn start_barebox(void)
|
|
{
|
|
initcall_t *initcall;
|
|
int result;
|
|
struct stat s;
|
|
|
|
if (!IS_ENABLED(CONFIG_SHELL_NONE))
|
|
barebox_main = run_shell;
|
|
|
|
for (initcall = __barebox_initcalls_start;
|
|
initcall < __barebox_initcalls_end; initcall++) {
|
|
pr_debug("initcall-> %pS\n", *initcall);
|
|
result = (*initcall)();
|
|
if (result)
|
|
pr_err("initcall %pS failed: %s\n", *initcall,
|
|
strerror(-result));
|
|
}
|
|
|
|
pr_debug("initcalls done\n");
|
|
|
|
if (IS_ENABLED(CONFIG_COMMAND_SUPPORT)) {
|
|
pr_info("running /env/bin/init...\n");
|
|
|
|
if (!stat("/env/bin/init", &s))
|
|
run_command("source /env/bin/init");
|
|
else
|
|
pr_err("/env/bin/init not found\n");
|
|
}
|
|
|
|
if (!barebox_main) {
|
|
pr_err("No main function! aborting.\n");
|
|
hang();
|
|
}
|
|
|
|
/* main_loop() can return to retry autoboot, if so just run it again. */
|
|
for (;;)
|
|
barebox_main();
|
|
|
|
/* NOTREACHED - no way out of command loop except booting */
|
|
}
|
|
|
|
void __noreturn hang (void)
|
|
{
|
|
puts ("### ERROR ### Please RESET the board ###\n");
|
|
for (;;);
|
|
}
|
|
|
|
/* Everything needed to cleanly shutdown barebox.
|
|
* Should be called before starting an OS to get
|
|
* the devices into a clean state
|
|
*/
|
|
void shutdown_barebox(void)
|
|
{
|
|
exitcall_t *exitcall;
|
|
|
|
for (exitcall = __barebox_exitcalls_start;
|
|
exitcall < __barebox_exitcalls_end; exitcall++) {
|
|
pr_debug("exitcall-> %pS\n", *exitcall);
|
|
(*exitcall)();
|
|
}
|
|
}
|