2 * Copyright (C) 2005 Texas Instruments.
5 * Jian Zhang, Texas Instruments, jzhang@ti.com.
8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
11 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
12 * Marius Groeger <mgroeger@sysgo.de>
14 * See file CREDITS for list of people who contributed to this
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
37 #include <asm/arch/mem.h>
39 #define END_MARK 0x646e65ff /* end */
41 const char version_string[] =
42 "Texas Instruments X-Loader 1.5.1 (" __DATE__ " - " __TIME__ ")";
47 printf("\n\n%s\n", version_string);
52 #ifdef CONFIG_DRIVER_OMAP34XX_I2C
53 static int init_func_i2c (void)
55 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
60 typedef int (init_fnc_t) (void);
62 init_fnc_t *init_sequence[] = {
63 cpu_init, /* basic cpu dependent setup */
64 #ifdef CONFIG_DRIVER_OMAP34XX_I2C
67 board_init, /* basic board dependent setup */
68 #ifdef CFG_NS16550_SERIAL
69 serial_init, /* serial communications setup */
72 nand_init, /* board specific nand init */
76 void start_armboot (void)
78 init_fnc_t **init_fnc_ptr;
81 int *first_instruction;
82 #if defined(CFG_ONENAND) || defined(CFG_NAND_K9F1G08R0A)
86 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr)
87 if ((*init_fnc_ptr)())
92 buf = (uchar*) CFG_LOADADDR;
93 *(int *)buf = 0xffffffff;
98 size = file_fat_read("u-boot.bin", buf, 0);
101 printf("Loading u-boot.bin from mmc\n");
108 if (buf == (uchar *)CFG_LOADADDR) {
109 /* if no u-boot on mmc, try onenand or nand, depending upon sysboot */
110 if (get_mem_type() == GPMC_ONENAND){
113 printf("Loading u-boot.bin from onenand\n");
115 for (i = ONENAND_START_BLOCK; i < ONENAND_END_BLOCK; i++){
116 if (!onenand_read_block(buf, i))
117 buf += ONENAND_BLOCK_SIZE;
120 } else if (get_mem_type() == GPMC_NAND){
121 #ifdef CFG_NAND_K9F1G08R0A
123 printf("Loading u-boot.bin from nand\n");
125 for (i = NAND_UBOOT_START; i < NAND_UBOOT_END; i+= NAND_BLOCK_SIZE){
126 if (!nand_read_block(buf, i)){
127 buf += NAND_BLOCK_SIZE; /* advance buf ptr */
128 if (*(int *)(buf - 8) == END_MARK && *(int *)(buf - 4) == END_MARK)
136 /* if u-boot not found on mmc or
137 * nand read result is erased data
140 first_instruction = (int *)CFG_LOADADDR;
141 if((buf == (uchar *)CFG_LOADADDR) || (*first_instruction == 0xffffffff)) {
142 printf("u-boot.bin not found or blank nand contents - attempting serial boot . . .\n");
143 do_load_serial_bin(CFG_LOADADDR, 115200);
146 /* go run U-Boot and never return */
147 ((init_fnc_t *)CFG_LOADADDR)();
149 /* should never come here */
154 /* call board specific hang function */
157 /* if board_hang() returns, hang here */
159 printf("X-Loader hangs\n");