（三） 支持Nor Flash

修改include/configs/mini2440.h 头文件

/*-----------------------------------------------------------------------
* FLASH and environment organization
*/
#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_AMD_LV160 1

 第175行添加如下代码：

#ifdef CONFIG_AMD_LV160
#define PHYS_FLASH_SIZE 0x00200000 /* 2MB */
#define CONFIG_SYS_MAX_FLASH_SECT (35) /* max number of sectors on one chip */
#define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) /* addr of environment */
#endif

 

修改board/samsung/mini2440/flash.c 文件 

 第74行左右添加如下代码：

#elif defined(CONFIG_AMD_LV800)
	(AMD_MANUFACT & FLASH_VENDMASK) |
	(AMD_ID_LV800B & FLASH_TYPEMASK);
#elif defined(CONFIG_AMD_LV160)
      (AMD_MANUFACT & FLASH_VENDMASK) |
      (AMD_ID_LV160B & FLASH_TYPEMASK);

 第152行左右添加如下代码：

case (AMD_ID_LV800B & FLASH_TYPEMASK):
    printf ("1x Amd29LV800BB (8Mbit)
");
    break;
case (AMD_ID_LV160B & FLASH_TYPEMASK):
    printf ("1x Amd29LV160B (2M)
");
    break;

 可以看出，uboot自带的Flash文件是用来支持Nor Flash的