tree 9f74ae012637bb920c84014f66446d79aaec1e84
parent 47c94a5d48eb1143c26f9819ee70452860fc834b
author Claus Gindhart <claus.gindhart@kontron.com> 1209028077 +0000
committer Stefan Reinauer <stefan.reinauer@coreboot.org> 1209028077 +0000

82802ab: touch only blocks that need updating

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.

Corresponding to flashrom svn r217 and coreboot v2 svn r3260.

Signed-off-by: Claus Gindhart <claus.gindhart@kontron.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>