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coreboot-kgpe-d16/Documentation/soc/intel/apollolake/index.md
Felix Singer 9b7e990d18 doc/mb/upsquared: Add documentation 
This patch adds documentation about the UP² mainboard
and the IFWI used by Apollolake platform.

Change-Id: Ic708ddbd2616eee4e5ec2740b3eac18b408bde38
Signed-off-by: Felix Singer <felix.singer@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32935
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2019-06-17 14:26:42 +00:00

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Apollolake

SPI flash layout

With Apollolake Intel invented another flash layout for x86 firmware called IFWI (Intel FirmWare Image).

Usually on x86 platforms the bootblock is stored at the end of the bios region and the Intel ME / TXE has its own IFD region. On Apollolake both have been moved into the IFWI region, which is a subregion of "BIOS", since it allows to store multiple firmware components.

The IFWI region can be manipulated by ifwitool.