From 9b7e990d18d5f6212df6ea967428c28b802e1b64 Mon Sep 17 00:00:00 2001 From: Felix Singer Date: Wed, 22 May 2019 18:32:46 +0200 Subject: doc/mb/upsquared: Add documentation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds documentation about the UP² mainboard and the IFWI used by Apollolake platform. Change-Id: Ic708ddbd2616eee4e5ec2740b3eac18b408bde38 Signed-off-by: Felix Singer Reviewed-on: https://review.coreboot.org/c/coreboot/+/32935 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Rudolph --- Documentation/soc/intel/apollolake/index.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 Documentation/soc/intel/apollolake/index.md (limited to 'Documentation/soc/intel/apollolake/index.md') diff --git a/Documentation/soc/intel/apollolake/index.md b/Documentation/soc/intel/apollolake/index.md new file mode 100644 index 0000000000..d4a5ee51ae --- /dev/null +++ b/Documentation/soc/intel/apollolake/index.md @@ -0,0 +1,17 @@ +# Apollolake +## SPI flash layout + +![][apl_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`. + +[apl_flash_layout]: flash_layout.svg + + -- cgit v1.2.3