the following patch was just integrated into master: commit 5218e616517ff5118080b01ce2f4305699f8b319 Author: Paul Menzel paulepanter@users.sourceforge.net Date: Mon Jun 16 09:28:36 2014 +0200
intel/lynxpoint: Allow building without IFD (descripter.bin)
On newer Intel systems, like Intel Lynx Point, the flash ROM is shared between the host processor (BIOS), its Management Engine (ME) and an integrated Ethernet controller (GbE). The layout of the flash ROM (and other information) is kept in the so called Intel Firmware Descriptor (IFD). If we only want to build coreboot to update the BIOS section, all we need is the flash layout.
So add the option to specify the flash layout in the mainboard’s Kconfig, and thus, to build without the real IFD. However, with such a build, one has to make sure that the IFD section on the flash ROM will not be written over (nor any other section that has not been included by coreboot). A patch to write selected sections of a flash ROM with IFD has been sent to the flashrom mailing list [2].
The same was done in commit a15cd66b [1] (sandybridge: Make build possible without descriptor.bin) for Intel Sandy Bridge (BD82x6x).
[1] http://www.flashrom.org/pipermail/flashrom/2013-June/011083.html [PATCH] Add option to read ROM layout from IFD [2] http://review.coreboot.org/3524
Change-Id: I26a604446cdf37a6bbcee2b14a107b7ccf417d5c Signed-off-by: Paul Menzel paulepanter@users.sourceforge.net Reviewed-on: http://review.coreboot.org/6046 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi patrick@georgi-clan.de
See http://review.coreboot.org/6046 for details.
-gerrit