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/*
* (C) Copyright 2007 Michal Simek
* (C) Copyright 2004 Atmark Techno, Inc.
*
* Michal SIMEK <monstr@monstr.eu>
* Yasushi SHOJI <yashi@atmark-techno.com>
*
* 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 <command.h>
#include <malloc.h>
#include <timestamp.h>
#include <version.h>
#include <watchdog.h>
DECLARE_GLOBAL_DATA_PTR;
const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
#ifdef CONFIG_SYS_GPIO_0
extern int gpio_init (void);
#endif
#ifdef CONFIG_SYS_INTC_0
extern int interrupts_init (void);
#endif
#if defined(CONFIG_CMD_NET)
extern int eth_init (bd_t * bis);
extern int getenv_IPaddr (char *);
#endif
/*
* The Malloc area is immediately below the monitor copy in DRAM
* aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
* as our monitory code is run from SDRAM
*/
static void mem_malloc_init (void)
{
mem_malloc_end = (CONFIG_SYS_MALLOC_BASE + CONFIG_SYS_MALLOC_LEN);
mem_malloc_start = CONFIG_SYS_MALLOC_BASE;
mem_malloc_brk = mem_malloc_start;
memset ((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
}
/*
* 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 dependend #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".
*/
typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] = {
env_init,
serial_init,
#ifdef CONFIG_SYS_GPIO_0
gpio_init,
#endif
#ifdef CONFIG_SYS_INTC_0
interrupts_init,
#endif
NULL,
};
void board_init (void)
{
bd_t *bd;
init_fnc_t **init_fnc_ptr;
gd = (gd_t *) CONFIG_SYS_GBL_DATA_OFFSET;
#if defined(CONFIG_CMD_FLASH)
ulong flash_size = 0;
#endif
asm ("nop"); /* FIXME gd is not initialize - wait */
memset ((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
gd->bd = (bd_t *) (gd + 1); /* At end of global data */
gd->baudrate = CONFIG_BAUDRATE;
bd = gd->bd;
bd->bi_baudrate = CONFIG_BAUDRATE;
bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
/* Initialise malloc() area */
mem_malloc_init ();
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
WATCHDOG_RESET ();
if ((*init_fnc_ptr) () != 0) {
hang ();
}
}
puts ("SDRAM :\n");
printf ("\t\tIcache:%s\n", icache_status() ? "OK" : "FAIL");
printf ("\t\tDcache:%s\n", dcache_status() ? "OK" : "FAIL");
printf ("\tU-Boot Start:0x%08x\n", TEXT_BASE);
#if defined(CONFIG_CMD_FLASH)
puts ("FLASH: ");
bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
if (0 < (flash_size = flash_init ())) {
bd->bi_flashsize = flash_size;
bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + flash_size;
# ifdef CONFIG_SYS_FLASH_CHECKSUM
print_size (flash_size, "");
/*
* Compute and print flash CRC if flashchecksum is set to 'y'
*
* NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
*/
s = getenv ("flashchecksum");
if (s && (*s == 'y')) {
printf (" CRC: %08X",
crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
);
}
putc ('\n');
# else /* !CONFIG_SYS_FLASH_CHECKSUM */
print_size (flash_size, "\n");
# endif /* CONFIG_SYS_FLASH_CHECKSUM */
} else {
puts ("Flash init FAILED");
bd->bi_flashstart = 0;
bd->bi_flashsize = 0;
bd->bi_flashoffset = 0;
}
#endif
#if defined(CONFIG_CMD_NET)
/* IP Address */
bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
eth_init (bd);
#endif
/* relocate environment function pointers etc. */
env_relocate ();
/* main_loop */
for (;;) {
WATCHDOG_RESET ();
main_loop ();
}
}
void hang (void)
{
puts ("### ERROR ### Please RESET the board ###\n");
for (;;) ;
}
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