Add support for the JEDEC RES (Read Electronic Signature and Resume from
Powerdown) SPI command to identify older SPI chips which can't handle
JEDEC RDID.
Since RES gives a one-byte identifier which is shared among many
different vendors and even different sizes, we want to match RES as a
last resort if RDID returns 0xff 0xff 0xff.
Corresponding to flashrom svn r235 and coreboot v2 svn r3320.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
This is a heavily reworked version of a patch by Fredrik Tolf, which was
Signed-off-by: Fredrik Tolf <fredrik@dolda2000.com>
This patch has no code changes.
Corresponding to flashrom svn r228 and coreboot v2 svn r3302.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
