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/*
* (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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/**
* @file
* @brief Main entry into the C part of barebox
*/
#include <common.h>
#include <init.h>
#include <command.h>
#include <malloc.h>
#include <memory.h>
#include <debug_ll.h>
#include <fs.h>
#include <linux/stat.h>
#include <environment.h>
#include <asm-generic/memory_layout.h>
#include <asm/sections.h>
extern initcall_t __barebox_initcalls_start[], __barebox_early_initcalls_end[],
__barebox_initcalls_end[];
static void display_meminfo(void)
{
ulong mstart = mem_malloc_start();
ulong mend = mem_malloc_end();
ulong msize = mend - mstart + 1;
debug("barebox code: 0x%p -> 0x%p\n", _stext, _etext);
debug("bss segment: 0x%p -> 0x%p\n", __bss_start, __bss_stop);
printf("Malloc space: 0x%08lx -> 0x%08lx (size %s)\n",
mstart, mend, size_human_readable(msize));
#ifdef CONFIG_ARM
printf("Stack space : 0x%08x -> 0x%08x (size %s)\n",
STACK_BASE, STACK_BASE + STACK_SIZE,
size_human_readable(STACK_SIZE));
#endif
}
#ifdef CONFIG_DEFAULT_ENVIRONMENT
#include <generated/barebox_default_env.h>
#ifdef CONFIG_DEFAULT_ENVIRONMENT_COMPRESSED
#include <uncompress.h>
void *defaultenv;
#else
#define defaultenv default_environment
#endif
static int register_default_env(void)
{
#ifdef CONFIG_DEFAULT_ENVIRONMENT_COMPRESSED
int ret;
void *tmp;
tmp = xzalloc(default_environment_size);
memcpy(tmp, default_environment, default_environment_size);
defaultenv = xzalloc(default_environment_uncompress_size);
ret = uncompress(tmp, default_environment_size, NULL, NULL,
defaultenv, NULL, uncompress_err_stdout);
free(tmp);
if (ret)
return ret;
#endif
add_mem_device("defaultenv", (unsigned long)defaultenv,
default_environment_uncompress_size,
IORESOURCE_MEM_WRITEABLE);
return 0;
}
device_initcall(register_default_env);
#endif
#if defined CONFIG_FS_RAMFS && defined CONFIG_FS_DEVFS
static int mount_root(void)
{
mount("none", "ramfs", "/");
mkdir("/dev", 0);
mount("none", "devfs", "/dev");
return 0;
}
fs_initcall(mount_root);
#endif
void start_barebox (void)
{
initcall_t *initcall;
int result;
#ifdef CONFIG_COMMAND_SUPPORT
struct stat s;
#endif
for (initcall = __barebox_initcalls_start;
initcall < __barebox_initcalls_end; initcall++) {
debug("initcall-> %pS\n", *initcall);
result = (*initcall)();
debug("initcall<- %pS (%d)\n", *initcall, result);
}
debug("initcalls done\n");
display_meminfo();
#ifdef CONFIG_ENV_HANDLING
if (envfs_load(default_environment_path, "/env")) {
#ifdef CONFIG_DEFAULT_ENVIRONMENT
printf("no valid environment found on %s. "
"Using default environment\n",
default_environment_path);
envfs_load("/dev/defaultenv", "/env");
#endif
}
#endif
#ifdef CONFIG_COMMAND_SUPPORT
printf("running /env/bin/init...\n");
if (!stat("/env/bin/init", &s)) {
run_command("source /env/bin/init", 0);
} else {
printf("not found\n");
}
#endif
/* main_loop() can return to retry autoboot, if so just run it again. */
for (;;)
run_shell();
/* 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)
{
devices_shutdown();
#ifdef ARCH_SHUTDOWN
arch_shutdown();
#endif
}
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