[U-Boot] [U-BOOT] cfi_flash.c fails to program NOR Flash SST39LF040

[Po-Yu Chuang]

Dear Stefan Roese,

2009/4/28 Po-Yu Chuang <ratbert.chuang at gmail.com>:
> Dear Stefan Roese,
>> Did you define CONFIG_FLASH_CFI_LEGACY (and CONFIG_SYS_FLASH_LEGACY_512Kx8)?
>> IIRC then the SST FLASH chips are not completely CFI compatible. So you need
>> to enable the JEDEC framework.
>
> Yes, I have defined the fallowing macros:
>
> #define CONFIG_SYS_FLASH_CFI
> #define CONFIG_FLASH_CFI_DRIVER
> #define CONFIG_FLASH_CFI_LEGACY
> #define CONFIG_SYS_FLASH_LEGACY_512Kx8
>
> SST39LF040 use addr1=0x5555 and addr2=0x2AAA, however, each sector is
> 0x1000 bytes.
>
> Thus, if we issue command to "sector base (0x41000) + offset(0x5555)",
> it sends to 0x46555 and the chip fails to recognize that address.
>
> I guess that SST39LF020 might suffer the same problem.

How do you think about this?
I can submit a patch for it.

regards,
Po-Yu Chuang