Hi Prakash,
On Friday 09 April 2010 09:22:21 prakash bedge wrote:
> Thanks for details. But I didn't get it clearly.
>
> Does it mean I have to CFI_MTD ot common CFI_DRIVER will works?
I don't understand this question.
> Which c source file I need to check the support for this chip?
>
> I am using below settings.
> *-----------------------------------------------------------------------
> * FLASH related
> *----------------------------------------------------------------------*/
> #define CONFIG_SYS_FLASH_CFI
> #define CONFIG_FLASH_CFI_DRIVER
> #define CONFIG_SYS_FLASH_EMPTY_INFO /* print 'E' for empty sector on
> flinfo */
>
> #define CONFIG_SYS_FLASH_BANKS_LIST {CONFIG_SYS_FLASH_BASE}
> #define CONFIG_SYS_MAX_FLASH_BANKS 1 /* number of banks */
> #define CONFIG_SYS_MAX_FLASH_SECT 512 /* sectors per device */
> #define CONFIG_FLASH_SHOW_PROGRESS 1
>
> #define CONFIG_SYS_FLASH_ERASE_TOUT 220000 /* Timeout for Flash Erase (in
> ms) */
> #define CONFIG_SYS_FLASH_WRITE_TOUT 100 /* Timeout for Flash Write (in
> ms) */
>
> #define CONFIG_ENV_SECT_SIZE 0x20000 /* size of one complete sector */
> #define CONFIG_ENV_ADDR (CONFIG_SYS_MONITOR_BASE-CONFIG_ENV_SECT_SIZE)
> #define CONFIG_ENV_SIZE 0x4000 /* Total Size of Environment Sector */
This looks good. With these defines the CFI driver should work. You might want
to add CONFIG_SYS_FLASH_USE_BUFFER_WRITE for write speedup. And you need to
configure your access timing for the chip select to the NOR Chip correctly of
course.
Cheers,
Stefan
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