u-boot2009，norflash移植

1. 开发板的配置文件fl2440.h（/include/configs/fl2440.h)修改配置

   /*-------------------------------------------------------------------

   * FLASH and environment organization

   */

   #define CONFIG_SYS_MONITOR_BASE TEXT_BASE

   #define FLASH_BASE0_PRELIM PHYS_FLASH_1

   #define CONFIG_SYS_FLASH_PROTECTION 1

   #define CFG_MAX_FLASH_BANKS 1

   #define CONFIG_SYS_FLASH_SIZE 0x00400000

   #define CONFIG_SYS_MAX_FLASH_SECT 32

    

   #if 0

   #define CONFIG_AMD_LV400 1 /* uncomment this if you have a LV400 flash */

   #define CONFIG_AMD_LV800 1 /* uncomment this if you have a LV800 flash */

   #endif

    

   #define CONFIG_ENV_IS_IN_FLASH 1

   #define CONFIG_ENV_SIZE 0x20000

   #define CONFIG_ENV_OFFSET 0x40000

   /*----------------------------------------------------------------*/

    

2. 把开发板目录下flash.c文件替换成下面的/board/cmi/下面的flash.c文件，然后删除这个write_short函数的申明和定义、删除write_buff函数。替换成下面的两个函数

    

   /*

   * Copy memory to flash, returns:

   * 0 - OK

   * 1 - write timeout

   * 2 - Flash not erased

   * 4 - Flash not identified

   */

   int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)

   {

   ulong cp, wp;

   ushort data;

   int l;

   int i, rc;

   wp = (addr & ~1);

    

   if ((l = addr - wp) != 0)

   {

   data = 0;

   for (i=0, cp=wp; i<l; ++i, ++cp) {

   data = (data >> 8) | (*(uchar *)cp << 8);

   }

   for (; i<2 && cnt>0; ++i) {

   data = (data >> 8) | (*src++ << 8);

   --cnt;

   ++cp;

   }

   for (; cnt==0 && i<2; ++i, ++cp) {

   data = (data >> 8) | (*(uchar *)cp << 8);

   }

   if ((rc = write_word(info, wp, data)) != 0) {

   return (rc);

   }

   wp += 2;

   }

    

   while (cnt >= 2) {

   data = *((vu_short*)src);

   if ((rc = write_word(info, wp, data)) != 0) {

   return (rc);

   }

   src += 2;

   wp += 2;

   cnt -= 2;

   }

   if (cnt == 0) {

   return ERR_OK;

   }

    

   data = 0;

   for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {

   data = (data >> 8) | (*src++ << 8);

   --cnt;

   }

   for (; i<2; ++i, ++cp) {

   data = (data >> 8) | (*(uchar *)cp << 8);

   }

   return write_word(info, wp, data);

   }

   /*

   * Write 16 bit (short) to flash

   */

    

   static int write_word (flash_info_t *info, ulong dest, ushort data)

   {

   vu_short *addr = (vu_short *)dest, val;

   int rc = ERR_OK;

   int flag;

    

    

   if ((*addr & data) != data)

   return ERR_NOT_ERASED;

    

   flag = disable_interrupts();

   *addr = 0x50;

   *addr = 0x40;

   *addr = data;

   reset_timer_masked();

   while(((val = *addr) & 0x80) != 0x80)

   {

   if (get_timer_masked() > CONFIG_SYS_FLASH_WRITE_TOUT) {

   rc = ERR_TIMOUT;

    

   *addr = 0xB0;

   goto outahere;

   }

   }

   if(val & 0x1A) {

   printf("nFlash write error x at address lxn",

   (int)val, (unsigned long)dest);

   if(val & (1<<3)) {

   printf("Voltage range error.n");

   rc = ERR_PROG_ERROR;

   goto outahere;

   }

   if(val & (1<<1)) {

   printf("Device protect error.n");

   rc = ERR_PROTECTED;

   goto outahere;

   }

   if(val & (1<<4)) {

   printf("Programming error.n");

   rc = ERR_PROG_ERROR;

   goto outahere;

   }

   rc = ERR_PROG_ERROR;

   goto outahere;

   }

   outahere:

    

   *addr = 0xFF;

   if (flag)

   enable_interrupts();

   return rc;

   }

    

   1. 修改board/fl2440/flash.c中函数申明：
      
      static ulong flash_get_size (vu_short *addr, flash_info_t *info);
      
      //static int write_short (flash_info_t *info, ulong dest, ushort data);
      
      static int write_word (flash_info_t *info, ulong dest, ushort data);
      
      static void flash_get_offsets (ulong base, flash_info_t *info);
      1. 开发板的配置文件flash.h（/include/flash.h)修改配置

    

   #define FLASH_28F320J3D 0x00C0        /* INTEL 28F320J3A ( 32M = 128K x 32)    */

   #define FLASH_28F640J3D 0x00C2        /* INTEL 28F640J3A ( 64M = 128K x 64)    */

   #define FLASH_28F128J3D 0x00C4        /* INTEL 28F128J3A (128M = 128K x 128)    */

   #define FLASH_28F256J3D 0x00C6        /* INTEL 28F256J3A (256M = 128K x 256)    */

   （原来是a）

    

   #define INTEL_ID_28F320J3D 0x00160016    /* 32M = 128K x 32    */

   #define INTEL_ID_28F640J3D 0x00170017    /* 64M = 128K x 64    */

   #define INTEL_ID_28F128J3D 0x00180018    /* 128M = 128K x 128    */

    

   以及将/board/fl2440/flash.c 中涉及的这两项修改。

       

3. 修改flash.c文件中的一个宏定义：
   把：
   #define FLASH_BLOCK_SIZE        0x00010000
   改为：
   #define FLASH_BLOCK_SIZE        0x00020000