154 lines
3.8 KiB
C
154 lines
3.8 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.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <init.h>
|
|
#include <command.h>
|
|
#include <malloc.h>
|
|
#include <mem_malloc.h>
|
|
#include <debug_ll.h>
|
|
#include <fs.h>
|
|
#include <linux/stat.h>
|
|
#include <environment.h>
|
|
#include <reloc.h>
|
|
|
|
extern initcall_t __u_boot_initcalls_start[], __u_boot_early_initcalls_end[],
|
|
__u_boot_initcalls_end[];
|
|
|
|
static void display_meminfo(void)
|
|
{
|
|
ulong mstart = mem_malloc_start();
|
|
ulong mend = mem_malloc_end();
|
|
ulong msize = mend - mstart + 1;
|
|
|
|
debug ("U-Boot code: 0x%08lX -> 0x%08lX BSS: -> 0x%08lX\n",
|
|
_u_boot_start, _bss_start, _bss_end);
|
|
printf("Malloc Space: 0x%08lx -> 0x%08lx (size %s)\n",
|
|
mstart, mend, size_human_readable(msize));
|
|
}
|
|
|
|
#ifdef CONFIG_HAS_EARLY_INIT
|
|
|
|
#define EARLY_INITDATA (CFG_INIT_RAM_ADDR + CFG_INIT_RAM_SIZE \
|
|
- CONFIG_EARLY_INITDATA_SIZE)
|
|
|
|
void *init_data_ptr = (void *)EARLY_INITDATA;
|
|
|
|
void early_init (void)
|
|
{
|
|
/* copy the early initdata segment to early init RAM */
|
|
memcpy((void *)EARLY_INITDATA, RELOC(&__early_init_data_begin),
|
|
(ulong)&__early_init_data_end -
|
|
(ulong)&__early_init_data_begin);
|
|
early_console_start(RELOC("psc3"), 115200);
|
|
}
|
|
|
|
#endif /* CONFIG_HAS_EARLY_INIT */
|
|
|
|
#ifdef CONFIG_DEFAULT_ENVIRONMENT
|
|
#include <uboot_default_env.h>
|
|
|
|
static struct device_d default_env_dev = {
|
|
.name = "rom",
|
|
.id = "defaultenv",
|
|
};
|
|
|
|
static void register_default_env(void)
|
|
{
|
|
default_env_dev.map_base = (unsigned long)default_environment;
|
|
default_env_dev.size = sizeof(default_environment);
|
|
register_device(&default_env_dev);
|
|
}
|
|
#else
|
|
static void register_default_env(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
void start_uboot (void)
|
|
{
|
|
initcall_t *initcall;
|
|
int result;
|
|
struct stat s;
|
|
|
|
#ifdef CONFIG_HAS_EARLY_INIT
|
|
/* We are running from RAM now, copy early initdata from
|
|
* early RAM to RAM
|
|
*/
|
|
memcpy(&__early_init_data_begin, init_data_ptr,
|
|
(ulong)&__early_init_data_end -
|
|
(ulong)&__early_init_data_begin);
|
|
init_data_ptr = &__early_init_data_begin;
|
|
#endif /* CONFIG_HAS_EARLY_INIT */
|
|
|
|
for (initcall = __u_boot_initcalls_start;
|
|
initcall < __u_boot_initcalls_end; initcall++) {
|
|
PUTHEX_LL(*initcall);
|
|
PUTC_LL('\n');
|
|
result = (*initcall)();
|
|
if (result)
|
|
hang();
|
|
}
|
|
|
|
display_meminfo();
|
|
|
|
register_default_env();
|
|
|
|
mount("none", "ramfs", "/");
|
|
mkdir("/dev", 0);
|
|
mount("none", "devfs", "/dev");
|
|
|
|
#ifdef CONFIG_ENV_HANDLING
|
|
if (envfs_load("/dev/env0", "/env")) {
|
|
#ifdef CONFIG_DEFAULT_ENVIRONMENT
|
|
printf("no valid environment found on /dev/env0. "
|
|
"Using default environment\n");
|
|
envfs_load("/dev/defaultenv", "/env");
|
|
#endif
|
|
}
|
|
#endif
|
|
printf("running /env/bin/init...\n");
|
|
|
|
if (!stat("/env/bin/init", &s)) {
|
|
run_command("source /env/bin/init", 0);
|
|
} else {
|
|
printf("not found\n");
|
|
}
|
|
|
|
/* 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 hang (void)
|
|
{
|
|
puts ("### ERROR ### Please RESET the board ###\n");
|
|
for (;;);
|
|
}
|