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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
*/
/*
* To match the U-Boot user interface on ARM platforms to the U-Boot
* standard (as on PPC platforms), some messages with debug character
* are removed from the default U-Boot build.
*
* Define DEBUG here if you want additional info as shown below
* printed upon startup:
*
* U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
* IRQ Stack: 00ebff7c
* FIQ Stack: 00ebef7c
*/
#include <common.h>
#include <init.h>
#include <command.h>
#include <malloc.h>
#include <version.h>
#include <mem_malloc.h>
#include <debug_ll.h>
#include <fs.h>
#include <linux/stat.h>
ulong load_addr = 0; /* Default Load Address */
#ifndef CONFIG_IDENT_STRING
#define CONFIG_IDENT_STRING ""
#endif
const char version_string[] =
U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
/************************************************************************
* Init Utilities *
************************************************************************
* Some of this code should be moved into the core functions,
* or dropped completely,
* but let's get it working (again) first...
*/
static int display_banner (void)
{
printf ("\n\n%s\n\n", version_string);
// debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
// _armboot_start, _bss_start, _bss_end);
#ifdef CONFIG_USE_IRQ
debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
#endif
return (0);
}
/*
* Breathe some life into the board...
*
* Initialize a serial port as console, and carry out some hardware
* tests.
*
* The first part of initialization is running from Flash memory;
* its main purpose is to initialize the RAM so that we
* can relocate the monitor code to RAM.
*/
/*
* All attempts to come up with a "common" initialization sequence
* that works for all boards and architectures failed: some of the
* requirements are just _too_ different. To get rid of the resulting
* mess of board dependent #ifdef'ed code we now make the whole
* initialization sequence configurable to the user.
*
* The requirements for any new initalization function is simple: it
* receives a pointer to the "global data" structure as it's only
* argument, and returns an integer return code, where 0 means
* "continue" and != 0 means "fatal error, hang the system".
*/
extern initcall_t __u_boot_initcalls_start[], __u_boot_initcalls_end[];
void start_uboot (void)
{
initcall_t *initcall;
int result;
struct stat s;
/* compiler optimization barrier needed for GCC >= 3.4 */
// __asm__ __volatile__("": : :"memory");
for (initcall = __u_boot_initcalls_start; initcall < __u_boot_initcalls_end; initcall++) {
// PUTHEX_LL(*initcall);
// PUTC('\n');
result = (*initcall)();
if (result)
hang();
}
display_banner();
run_command("mount none ramfs /", 0);
run_command("mkdir /dev", 0);
run_command("mkdir /env", 0);
run_command("mount none devfs /dev", 0);
run_command("loadenv", 0);
if (!stat("/env/init", &s)) {
printf("running /env/init\n");
run_command("exec /env/init", 0);
}
/* main_loop() can return to retry autoboot, if so just run it again. */
for (;;) {
main_loop ();
}
/* NOTREACHED - no way out of command loop except booting */
}
void hang (void)
{
puts ("### ERROR ### Please RESET the board ###\n");
for (;;);
}
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