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>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3260 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

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