[U-Boot] [PATCH] for JEDEC flash, command of word programing should be issued relatvie to base
Stefan Roese
sr at denx.de
Wed Jul 8 11:26:25 CEST 2009
On Tuesday 07 July 2009 07:27:35 Po-Yu Chuang wrote:
> For JEDEC flash, we should issue word programming command relative to
> base address rather than sector base address. Original source makes
> SST Flash fails to program sectors which are not on the 0x10000 boundaries.
>
> e.g.
> SST39LF040 uses 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.
>
> This patch is tested with SST39LF040.
>
> Signed-off-by: Po-Yu Chuang <ratbert at faraday-tech.com>
This patch is line wrapped and can't be applied. Please fix and resubmit. And
while at it please use a somewhat shorted subject.
Thanks.
Best regards,
Stefan
=====================================================================
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
=====================================================================
More information about the U-Boot
mailing list