Flash pages, which where excluded from updating using the exclude or the
layout option, as well as areas, whose flash contents already contain the
desired data, will be skipped.
These ensures absolute data security of critical areas (BIOS boot block),
e.g. against a sudden power off or a CPU hangup during flashing. As a
nice side effect, it speeds up the flash process, if the BIOS to be flashed
is very similar to the version in flash.
Signed-off-by: Claus Gindhart claus.gindhart@kontron.com
---
Some remarks:
I need this feature urgently, because data retention of the BIOS boot block
(and also some other data in some applications) is a mandatory requirement
for me.
This patch only adds this feature for the 82802ab type flashes.
I will add this feature to all flash modules of the flash devices, we are
using in our company; i have already running an improved jedec.c here, and
will provide this patch soon. Some SPI devices will follow in some weeks.
--
Mit freundlichen Grüßen / Best regards
Claus Gindhart
SW R&D
Kontron Modular Computers
phone :++49 (0)8341-803-374
mailto:claus.gindhart@kontron.com
http://www.kontron.com
Kontron Modular Computers GmbH
Geschaeftsfuehrer / Managing Directors: Ulrich Gehrmann, Thomas Sabisch
Sitz der Gesellschaft / Registered Office: Kaufbeuren, Rechtsform / Legal: GmbH
Amtsgericht / Local District Court Kempten, HRB Nr. / Trade Register No. 6195
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