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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 <version.h>
#include <watchdog.h>
#include <stdio_dev.h>
#include <serial.h>
#include <net.h>
#include <linux/compiler.h>
#include <asm/processor.h>
#include <asm/microblaze_intc.h>
#include <fdtdec.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* 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,
#ifdef CONFIG_OF_CONTROL
fdtdec_check_fdt,
#endif
serial_init,
console_init_f,
interrupts_init,
#ifdef CONFIG_XILINX_TB_WATCHDOG
hw_watchdog_init,
#endif
timer_init,
NULL,
};
unsigned long monitor_flash_len;
void board_init_f(ulong not_used)
{
bd_t *bd;
init_fnc_t **init_fnc_ptr;
gd = (gd_t *) (CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET);
bd = (bd_t *) (CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET \
- GENERATED_BD_INFO_SIZE);
#if defined(CONFIG_CMD_FLASH)
ulong flash_size = 0;
#endif
asm ("nop"); /* FIXME gd is not initialize - wait */
memset ((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
memset ((void *)bd, 0, GENERATED_BD_INFO_SIZE);
gd->bd = bd;
gd->baudrate = CONFIG_BAUDRATE;
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 */
monitor_flash_len = __end - __text_start;
#ifdef CONFIG_OF_EMBED
/* Get a pointer to the FDT */
gd->fdt_blob = _binary_dt_dtb_start;
#elif defined CONFIG_OF_SEPARATE
/* FDT is at end of image */
gd->fdt_blob = (void *)__end;
#endif
/* Allow the early environment to override the fdt address */
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
(uintptr_t)gd->fdt_blob);
/*
* 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
*/
mem_malloc_init (CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
serial_initialize();
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
WATCHDOG_RESET ();
if ((*init_fnc_ptr) () != 0) {
hang ();
}
}
#ifdef CONFIG_OF_CONTROL
/* For now, put this check after the console is ready */
if (fdtdec_prepare_fdt()) {
panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
"doc/README.fdt-control");
} else
printf("DTB: 0x%x\n", (u32)gd->fdt_blob);
#endif
puts ("SDRAM :\n");
printf ("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF");
printf ("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF");
printf ("\tU-Boot Start:0x%08x\n", CONFIG_SYS_TEXT_BASE);
#if defined(CONFIG_CMD_FLASH)
puts ("Flash: ");
bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
flash_size = flash_init();
if (bd->bi_flashstart && flash_size > 0) {
# 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
*/
if (getenv_yesno("flashchecksum") == 1) {
printf (" CRC: %08X",
crc32(0, (const u8 *)bd->bi_flashstart,
flash_size)
);
}
putc ('\n');
# else /* !CONFIG_SYS_FLASH_CHECKSUM */
print_size (flash_size, "\n");
# endif /* CONFIG_SYS_FLASH_CHECKSUM */
bd->bi_flashsize = flash_size;
bd->bi_flashoffset = bd->bi_flashstart + flash_size;
} else {
puts ("Flash init FAILED");
bd->bi_flashstart = 0;
bd->bi_flashsize = 0;
bd->bi_flashoffset = 0;
}
#endif
/* relocate environment function pointers etc. */
env_relocate ();
/* Initialize stdio devices */
stdio_init ();
/* Initialize the jump table for applications */
jumptable_init();
/* Initialize the console (after the relocation and devices init) */
console_init_r();
board_init();
/* Initialize from environment */
load_addr = getenv_ulong("loadaddr", 16, load_addr);
#if defined(CONFIG_CMD_NET)
printf("Net: ");
eth_initialize(gd->bd);
uchar enetaddr[6];
eth_getenv_enetaddr("ethaddr", enetaddr);
printf("MAC: %pM\n", enetaddr);
#endif
/* main_loop */
for (;;) {
WATCHDOG_RESET ();
main_loop ();
}
}
void hang (void)
{
puts ("### ERROR ### Please RESET the board ###\n");
for (;;) ;
}
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