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 <part.h>
  35 #include <fat.h>
  36 #include <asm/arch/mem.h>
  37
  38 const char version_string[] =
  39         "Texas Instruments X-Loader 1.4.2 (" __DATE__ " - " __TIME__ ")";
  40
  41 #ifdef CFG_PRINTF
  42 int print_info(void)
  43 {
  44         printf("\n\n%s\n", version_string);
  45         return 0;
  46 }
  47 #endif
  48
  49 static int init_func_i2c (void)
  50 {
  51 #ifdef CONFIG_MMC
  52         i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
  53 #endif
  54         return 0;
  55 }
  56
  57 typedef int (init_fnc_t) (void);
  58
  59 init_fnc_t *init_sequence[] = {
  60         cpu_init,               /* basic cpu dependent setup */
  61         board_init,             /* basic board dependent setup */
  62 #ifdef CFG_PRINTF
  63         serial_init,            /* serial communications setup */
  64         print_info,
  65 #endif
  66         nand_init,              /* board specific nand init */
  67 #ifdef CONFIG_MMC
  68         init_func_i2c,
  69 #endif
  70         NULL,
  71 };
  72
  73 void start_armboot (void)
  74 {
  75         init_fnc_t **init_fnc_ptr;
  76         int i, size;
  77         uchar *buf;
  78         block_dev_desc_t *dev_desc = NULL;
  79
  80         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
  81                 if ((*init_fnc_ptr)() != 0) {
  82                         hang ();
  83                 }
  84         }
  85
  86         misc_init_r();
  87
  88         buf =  (uchar*) CFG_LOADADDR;
  89
  90 #ifdef CONFIG_MMC
  91         /* first try mmc */
  92         if (mmc_init(1)) {
  93                 size = file_fat_read("u-boot.bin", buf, 0);
  94                 if (size > 0) {
  95 #ifdef CFG_PRINTF
  96                         printf("Loading u-boot.bin from mmc\n");
  97 #endif
  98                         buf += size;
  99                 }
 100         }
 101 #endif
 102
 103         if (buf == (uchar *)CFG_LOADADDR) {
 104                 /* if no u-boot on mmc, try onenand or nand, depending upon sysboot */
 105                 if (get_mem_type() == GPMC_ONENAND){
 106 #ifdef CFG_PRINTF
 107                         printf("Loading u-boot.bin from onenand\n");
 108 #endif
 109                         for (i = ONENAND_START_BLOCK; i < ONENAND_END_BLOCK; i++){
 110                                 if (!onenand_read_block(buf, i))
 111                                         buf += ONENAND_BLOCK_SIZE;
 112                         }
 113                 } else if (get_mem_type() == GPMC_NAND){
 114 #ifdef CFG_PRINTF
 115                         printf("Loading u-boot.bin from nand\n");
 116 #endif
 117                         for (i = NAND_UBOOT_START; i < NAND_UBOOT_END; i+= NAND_BLOCK_SIZE){
 118                                 if (!nand_read_block(buf, i))
 119                                         buf += NAND_BLOCK_SIZE; /* advance buf ptr */
 120                         }
 121                 }
 122         }
 123
 124
 125         if (buf == (uchar *)CFG_LOADADDR)
 126                 hang();
 127
 128         /* go run U-Boot and never return */
 129         ((init_fnc_t *)CFG_LOADADDR)();
 130
 131         /* should never come here */
 132 }
 133
 134 void hang (void)
 135 {
 136         /* call board specific hang function */
 137         board_hang();
 138
 139         /* if board_hang() returns, hange here */
 140 #ifdef CFG_PRINTF
 141         printf("X-Loader hangs\n");
 142 #endif
 143         for (;;);
 144 }