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/*
* Copyright (C) 2005 Texas Instruments.
*
* (C) Copyright 2004
* Jian Zhang, Texas Instruments, jzhang@ti.com.
*
* (C) Copyright 2002
* 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 <part.h>
#include <fat.h>
#include <asm/arch/mem.h>
const char version_string[] =
"Texas Instruments X-Loader 1.5.1 (" __DATE__ " - " __TIME__ ")";
int print_info(void)
{
#ifdef CFG_PRINTF
printf("\n\n%s\n", version_string);
#endif
return 0;
}
/* !!! why is I2C dependent on MMC? */
#ifdef CONFIG_MMC
#ifdef CONFIG_DRIVER_OMAP34XX_I2C
static int init_func_i2c (void)
{
i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
return 0;
}
#endif
#endif
typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] = {
cpu_init, /* basic cpu dependent setup */
board_init, /* basic board dependent setup */
#ifdef CFG_NS16550_SERIAL
serial_init, /* serial communications setup */
#endif
print_info,
nand_init, /* board specific nand init */
#ifdef CONFIG_MMC
#ifdef CONFIG_DRIVER_OMAP34XX_I2C
init_func_i2c,
#endif
#endif
NULL,
};
void start_armboot (void)
{
init_fnc_t **init_fnc_ptr;
int size;
uchar *buf;
int *first_instruction;
#if defined(CFG_ONENAND) || defined(CFG_NAND_K9F1G08R0A)
int i;
#endif
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr)
if ((*init_fnc_ptr)())
hang ();
misc_init_r();
buf = (uchar*) CFG_LOADADDR;
*(int *)buf = 0xffffffff;
#ifdef CONFIG_MMC
/* first try mmc */
if (mmc_init(1)) {
size = file_fat_read("u-boot.bin", buf, 0);
if (size > 0) {
#ifdef CFG_PRINTF
printf("Loading u-boot.bin from mmc\n");
#endif
buf += size;
}
}
#endif
if (buf == (uchar *)CFG_LOADADDR) {
/* if no u-boot on mmc, try onenand or nand, depending upon sysboot */
if (get_mem_type() == GPMC_ONENAND){
#ifdef CFG_ONENAND
#ifdef CFG_PRINTF
printf("Loading u-boot.bin from onenand\n");
#endif
for (i = ONENAND_START_BLOCK; i < ONENAND_END_BLOCK; i++){
if (!onenand_read_block(buf, i))
buf += ONENAND_BLOCK_SIZE;
}
#endif
} else if (get_mem_type() == GPMC_NAND){
#ifdef CFG_NAND_K9F1G08R0A
#ifdef CFG_PRINTF
printf("Loading u-boot.bin from nand\n");
#endif
for (i = NAND_UBOOT_START; i < NAND_UBOOT_END; i+= NAND_BLOCK_SIZE){
if (!nand_read_block(buf, i))
buf += NAND_BLOCK_SIZE; /* advance buf ptr */
}
#endif
}
}
/* if u-boot not found on mmc or
* nand read result is erased data
* then serial boot
*/
first_instruction = (int *)CFG_LOADADDR;
if((buf == (uchar *)CFG_LOADADDR) || (*first_instruction == 0xffffffff)) {
printf("u-boot.bin not found or blank nand contents - attempting serial boot . . .\n");
do_load_serial_bin(CFG_LOADADDR, 115200);
}
/* go run U-Boot and never return */
((init_fnc_t *)CFG_LOADADDR)();
/* should never come here */
}
void hang (void)
{
/* call board specific hang function */
board_hang();
/* if board_hang() returns, hang here */
#ifdef CFG_PRINTF
printf("X-Loader hangs\n");
#endif
for (;;);
}
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