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,
36 #include <asm/arch/mem.h>
38 const char version_string[] =
39 "Texas Instruments X-Loader 1.5.0 (" __DATE__ " - " __TIME__ ")";
44 printf("\n\n%s\n", version_string);
49 /* !!! why is I2C dependent on MMC? */
52 #ifdef CONFIG_DRIVER_OMAP34XX_I2C
53 static int init_func_i2c (void)
55 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
61 typedef int (init_fnc_t) (void);
63 init_fnc_t *init_sequence[] = {
64 cpu_init, /* basic cpu dependent setup */
65 board_init, /* basic board dependent setup */
66 #ifdef CFG_NS16550_SERIAL
67 serial_init, /* serial communications setup */
70 nand_init, /* board specific nand init */
72 #ifdef CONFIG_DRIVER_OMAP34XX_I2C
79 void start_armboot (void)
81 init_fnc_t **init_fnc_ptr;
84 int *first_instruction;
85 #if defined(CFG_ONENAND) || defined(CFG_NAND_K9F1G08R0A)
89 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr)
90 if ((*init_fnc_ptr)())
95 buf = (uchar*) CFG_LOADADDR;
96 *(int *)buf = 0xffffffff;
101 size = file_fat_read("u-boot.bin", buf, 0);
104 printf("Loading u-boot.bin from mmc\n");
111 if (buf == (uchar *)CFG_LOADADDR) {
112 /* if no u-boot on mmc, try onenand or nand, depending upon sysboot */
113 if (get_mem_type() == GPMC_ONENAND){
116 printf("Loading u-boot.bin from onenand\n");
118 for (i = ONENAND_START_BLOCK; i < ONENAND_END_BLOCK; i++){
119 if (!onenand_read_block(buf, i))
120 buf += ONENAND_BLOCK_SIZE;
123 } else if (get_mem_type() == GPMC_NAND){
124 #ifdef CFG_NAND_K9F1G08R0A
126 printf("Loading u-boot.bin from nand\n");
128 for (i = NAND_UBOOT_START; i < NAND_UBOOT_END; i+= NAND_BLOCK_SIZE){
129 if (!nand_read_block(buf, i))
130 buf += NAND_BLOCK_SIZE; /* advance buf ptr */
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");