libupgrade/hmx_upgrade_flash.c

/* Copyright (C) 2011-2012 Humax Co., Ltd. All rights reserved.
 *
 * Humax Co., Ltd. ("Humax") hereby provides permission, free of charge, to any
 * person obtaining a copy of this source code, to use and redistribute this
 * source code with or without modification subject to the following conditions:
 *
 * 1. Redistributions of this source code must retain the above copyright
 * notice, permission notice, this list of conditions and the following
 * disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * permission notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY HUMAX "AS IS" WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ACCURACY, COMPLETENESS,
 * CURRENCY, AVAILABILITY, TITLE OR NON-INFRINGEMENT. IN NO EVENT HUMAX OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF OR OTHER DEALINGS IN THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusion contained in the software and documentation are
 * those of the authors and should not be interpreted as representing official
 * policies, either expressed or implied, of Humax.
 *
 * Notwithstanding the above, under no circumstances may you combine this
 * software in any way with any other Humax¿s software provided under a license
 * other than the above license, without Humax's express prior written consent.
 */
/*******************************************************************/
/************************* File Description ************************/
/*******************************************************************/
/* File Name:           $Workfile:   hmx_uprade_flash.c  $
 * Version:             $Revision:   1.0  $
 * Original Author:     Yang Hyun Uk $
 * Current Author:      $Author: huyang@humaxdigital.com $
 * Date:                $Date: 2011.09.30
 * File Description:    Humax Upgrade APIs
 * Module:
 * Remarks:
 */

/**
 * @defgroup UPGRADE_FLASH Flashing APIs for Upgrade Module
 * @ingroup UPGRADE
 *
 */

/**
 * @author Hyunuk Yang(huyang@humaxdigital.com)
 * @date 30 Sept 2011
 */

 /*@{*/

/**
 * @file hmx_upgrade_flash.c
 */

/*******************************************************************/
/**************************** Header Files *************************/
/*******************************************************************/
/* Start Including Header Files */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <mtd/mtd-user.h>
/* End Including Headers */


/*******************************************************************/
/****************************** define *****************************/
/*******************************************************************/
/* Start #define */
/* this is for test */
#define TARGET_NVRAM_MTD        "/dev/mtdblock1"
#define TARGET_NVRAM_MTDC       "/dev/mtd1"
/* End #define */

/*******************************************************************/
/****************************** typedef ****************************/
/*******************************************************************/
/* Start typedef */
/* End typedef */


/*******************************************************************/
/************************ global variables *************************/
/*******************************************************************/
/* Start global variable */
int libupgrade_verbose = 1;
/* End global variable */


/*******************************************************************/
/************************ static variables *************************/
/*******************************************************************/
/* Start static variable */
int fd_nvram = 0;
int fd_nvram_c = -1;

static unsigned long    s_FlashTotalSize;
static unsigned long    s_FlashBlockSize;
static unsigned char *s_BlockBuff;
/* End static variable */

/*******************************************************************/
/************************ static funtions **************************/
/*******************************************************************/
int HMX_UPGRADE_NVRAM_Write(unsigned long offset, unsigned char * data,
                            unsigned int size )
{
  int ret;
  struct mtd_info_user info;
  unsigned long block_size, write_size;
  unsigned long mov_offset, remain_size;

  if (libupgrade_verbose) printf("[%s] offset %08x, size %d, data = %02x\n",
                                 __FUNCTION__, offset, size, data[0] );

  /* */
  if ( fd_nvram == 0 ) {
    fd_nvram = open(TARGET_NVRAM_MTD, (O_RDWR | O_SYNC) );
    if( fd_nvram < 0 ) {
      printf( "Failed to open!\n" );
      return -1;
    }
  }

  if ( fd_nvram_c < 0 ) {
    fd_nvram_c = open(TARGET_NVRAM_MTDC, (O_RDWR | O_SYNC) );
    if( fd_nvram_c < 0 ) {
      printf( "Failed to open!\n" );
      return -1;
    }
  }

  ret = ioctl(fd_nvram_c, MEMGETINFO,(void *)&info);
  if(ret < 0) {
    printf("can't get info data! (%d)\n", ret);
    return -1;
  }

  remain_size = size;
  mov_offset = offset;

  while(remain_size > 0) {
    /* offsetÀÌ block ³Ñ¾î¼­¸é ¾ÈµÈ´Ù.. */
    write_size = info.erasesize;
    write_size -= ((mov_offset + info.erasesize)%info.erasesize);

    /* ¸¶Áö¸·Àº ³ª¸ÓÁö ¸¸Å­.. */
    if( remain_size < write_size) {
      write_size = remain_size;
    }

    if (libupgrade_verbose) {
      printf(" write : offset - 0x%x, size %d\n", mov_offset, write_size);
    }

    ret = lseek(fd_nvram, mov_offset, SEEK_SET);
    if(ret < 0) {
      printf("can't seek position! (%d)\n", ret);
      return -1;
    }

    ret = write(fd_nvram, data+(mov_offset-offset), write_size);
    if(ret < 0) {
      printf("can't write data! (%d)\n", ret);
      return -1;
    }

    mov_offset += write_size;
    remain_size -= write_size;
  }

  return 0;
}

int HMX_UPGRADE_NVRAM_Read(unsigned long offset, unsigned char * data,
                           unsigned int size )
{
  int ret;
  struct mtd_info_user info;
  unsigned long block_size, write_size;
  unsigned long mov_offset, remain_size;

  if (libupgrade_verbose) printf("[%s] offset %08x, size %d, data = %02x\n",
                                 __FUNCTION__, offset, size, data[0] );

  /* */
  if ( fd_nvram == 0 ) {
    fd_nvram = open(TARGET_NVRAM_MTD, (O_RDWR | O_SYNC) );
    if( fd_nvram < 0 ) {
      printf( "Failed to open!\n" );
      return -1;
    }
  }


  ret = lseek(fd_nvram, offset, SEEK_SET);
  if(ret < 0) {
    printf("can't seek position! (%d)\n", ret);
    return -1;
  }

  ret = read(fd_nvram, data, size);
  if(ret < 0) {
    printf("can't read data! (%d)\n", ret);
    return ret;
  }

  return 0;
}


/*@}*/