lib/board.c

   1 /*
   2  * Copyright (C) 2005 Texas Instruments.
   3  *
   4  * (C) Copyright 2004
   5  * Jian Zhang, Texas Instruments, jzhang@ti.com.
   6  *
   7  * (C) Copyright 2002
   8  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   9  *
  10  * (C) Copyright 2002
  11  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
  12  * Marius Groeger <mgroeger@sysgo.de>
  13  *
  14  * See file CREDITS for list of people who contributed to this
  15  * project.
  16  *
  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.
  21  *
  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.
  26  *
  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,
  30  * MA 02111-1307 USA
  31  */
  32
  33 #include <common.h>
  34 #include <asm/arch/mem.h>
  35
  36 #ifdef CFG_PRINTF
  37 int print_info(void)
  38 {
  39         printf("\n\nTexas Instruments X-Loader 1.41sms\n");
  40         return 0;
  41 }
  42 #endif
  43
  44 typedef int (init_fnc_t) (void);
  45
  46 init_fnc_t *init_sequence[] = {
  47         cpu_init,               /* basic cpu dependent setup */
  48         board_init,             /* basic board dependent setup */
  49 #ifdef CFG_PRINTF
  50         serial_init,            /* serial communications setup */
  51         print_info,
  52 #endif
  53         nand_init,              /* board specific nand init */
  54         NULL,
  55 };
  56
  57 void start_armboot (void)
  58 {
  59         init_fnc_t **init_fnc_ptr;
  60         int i;
  61         uchar *buf;
  62
  63         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
  64                 if ((*init_fnc_ptr)() != 0) {
  65                         hang ();
  66                 }
  67         }
  68
  69         buf =  (uchar*) CFG_LOADADDR;
  70
  71 #ifdef CONFIG_MMC
  72         /* first try mmc */
  73         buf += mmc_boot(buf);
  74 #endif
  75
  76         if (buf == (uchar *)CFG_LOADADDR) {
  77                 /* if no u-boot on mmc, try onenand and nand */
  78                 if (get_mem_type() == GPMC_ONENAND){
  79 #ifdef CFG_PRINTF
  80                         printf("Booting from onenand . . .\n");
  81 #endif
  82                         for (i = ONENAND_START_BLOCK; i < ONENAND_END_BLOCK; i++){
  83                                 if (!onenand_read_block(buf, i))
  84                                         buf += ONENAND_BLOCK_SIZE;
  85                         }
  86                 }
  87
  88                 if (get_mem_type() == GPMC_NAND){
  89 #ifdef CFG_PRINTF
  90                         printf("Booting from nand . . .\n");
  91 #endif
  92                         for (i = NAND_UBOOT_START; i < NAND_UBOOT_END; i+= NAND_BLOCK_SIZE){
  93                                 if (!nand_read_block(buf, i))
  94                                         buf += NAND_BLOCK_SIZE; /* advance buf ptr */
  95                         }
  96                 }
  97         }
  98
  99
 100         if (buf == (uchar *)CFG_LOADADDR)
 101                 hang();
 102
 103         /* go run U-Boot and never return */
 104         printf("Starting OS Bootloader...\n");
 105         ((init_fnc_t *)CFG_LOADADDR)();
 106
 107         /* should never come here */
 108 }
 109
 110 void hang (void)
 111 {
 112         /* call board specific hang function */
 113         board_hang();
 114
 115         /* if board_hang() returns, hange here */
 116         printf("X-Loader hangs\n");
 117         for (;;);
 118 }