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Sourcecode: x-loader-omap4 version File versions  Download package

board.c

/*
 * 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 <mmc.h>

#ifdef CFG_PRINTF
int print_info(void)
{
      printf ("\n\nTexas Instruments X-Loader 1.41 ("
            __DATE__ " - " __TIME__ ")\n");
      return 0;
}
#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_PRINTF
      serial_init,            /* serial communications setup */
      print_info,
#endif
      //nand_init,            /* board specific nand init */
      NULL,
};

#ifdef CFG_CMD_FAT
extern char * strcpy(char * dest,const char *src);
#else
char * strcpy(char * dest,const char *src)
{
       char *tmp = dest;

       while ((*dest++ = *src++) != '\0')
               /* nothing */;
       return tmp;
}
#endif

#ifdef CFG_CMD_MMC
int mmc_read_bootloader(int dev, int part)
{
      unsigned char ret = 0;
      unsigned long offset = CFG_LOADADDR;

      ret = mmc_init(dev);
      if (ret != 0){
            printf("\n MMC init failed \n");
            return -1;
      }

#ifdef CFG_CMD_FAT
      long size;
      block_dev_desc_t *dev_desc = NULL;

      if (part) {
            dev_desc = mmc_get_dev(dev);
            fat_register_device(dev_desc, part);
            size = file_fat_read("u-boot.bin", (unsigned char *)offset, 0);
            if (size == -1)
                  return -1;
      } else {
            /* FIXME: OMAP4 specific */
             mmc_read(dev, 0x400, (unsigned char *)CFG_LOADADDR,
                                          0x00060000);
      }
#endif
      return 0;
}
#endif

extern int do_load_serial_bin(ulong offset, int baudrate);

#define __raw_readl(a)  (*(volatile unsigned int *)(a))

void start_armboot (void)
{
      init_fnc_t **init_fnc_ptr;
      int i;
      uchar *buf;
      char boot_dev_name[8];
      u32 boot_device = 0;
 
      for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
            if ((*init_fnc_ptr)() != 0) {
                  hang ();
            }
      }
#ifdef START_LOADB_DOWNLOAD
      strcpy(boot_dev_name, "UART");
      do_load_serial_bin (CFG_LOADADDR, 115200);
#else

      /* Read boot device from saved scratch pad */
      boot_device = __raw_readl(0x4A326000) & 0xff;
      buf = (uchar *) CFG_LOADADDR;

      switch(boot_device) {
      case 0x03:
            strcpy(boot_dev_name, "ONENAND");
#if defined(CFG_ONENAND)
            for (i = ONENAND_START_BLOCK; i < ONENAND_END_BLOCK; i++) {
                  if (!onenand_read_block(buf, i))
                        buf += ONENAND_BLOCK_SIZE;
                  else
                        goto error;
            }
#endif
            break;
      case 0x02:
      default:
            strcpy(boot_dev_name, "NAND");
#if defined(CFG_NAND)
            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
            break;
      case 0x05:
            strcpy(boot_dev_name, "MMC/SD1");
#if defined(CONFIG_MMC)
            if (mmc_read_bootloader(0, 1) != 0)
                  goto error;
#endif
            break;
      case 0x06:
            strcpy(boot_dev_name, "EMMC");
#if defined(CONFIG_MMC)
            if (mmc_read_bootloader(1, 0) != 0)
                  goto error;
#endif
            break;
      };
#endif
      /* go run U-Boot and never return */
      printf("Starting OS Bootloader from %s ...\n", boot_dev_name);
      ((init_fnc_t *)CFG_LOADADDR)();

      /* should never come here */
#if defined(CFG_ONENAND) || defined(CONFIG_MMC)
error:
#endif
      printf("Could not read bootloader!\n");
      hang();
}

void hang (void)
{
      /* call board specific hang function */
      board_hang();
      
      /* if board_hang() returns, hange here */
      printf("X-Loader hangs\n");
      for (;;);
}

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