[U-Boot] SST39VF1601 flash driver

[Stefan Roese <sr@denx.de>]

Hi Jerry,

On Tuesday 27 January 2009, Jerry Zhang wrote:
>   I am porting u-boot to my board. I found it is difficult for me to write
> the flash driver ( flash.c) of SST39VF1601 by myself. Has anyone ever
> written this driver? Would you please give me a guide?

Sure this device has been supported many times (e.g. 
board/esd/common/flash.c). But I suggest to support it now via the legacy 
infrastructure of the common CFI flash driver. Take a look at the board hcu4 
for example:

/* Use common CFI driver */
#define CONFIG_SYS_FLASH_CFI
#define CONFIG_FLASH_CFI_DRIVER
/* board provides its own flash_init code */
#define CONFIG_FLASH_CFI_LEGACY		1
...

You will need to add a definition for the 39VF1601 to 
drivers/mtd/jedec_flash.c though but this shouldn't be too hard.

Best regards,
Stefan

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