From 4e43abf9c120b5a9ae4d920a71df1c7993e6a617 Mon Sep 17 00:00:00 2001 From: Bill XIE Date: Thu, 7 Jul 2022 16:18:57 +0800 Subject: mb/hp/z220_series: Improve the port for z220_sff_workstation - Move configs for PCIe ports not present on z220_sff_workstation from the devicetree.cb of base board to the overridetree.cb of z220_cmt_workstation. - Add a note for ME/AMT Flash Override jumper, for it is hard to flash from OEM firmware either internally or externally without closing this jumper. - Add a side note for similar HP Compaq Elite 8300 SFF. Signed-off-by: Bill XIE Change-Id: I35d8b97f52a83910a61c12b1f7367ee7a19a9ad7 Reviewed-on: https://review.coreboot.org/c/coreboot/+/65703 Reviewed-by: Arthur Heymans Reviewed-by: Paul Menzel Tested-by: build bot (Jenkins) --- Documentation/mainboard/hp/z220_sff.md | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'Documentation/mainboard') diff --git a/Documentation/mainboard/hp/z220_sff.md b/Documentation/mainboard/hp/z220_sff.md index 0dfa653937..11676208ac 100644 --- a/Documentation/mainboard/hp/z220_sff.md +++ b/Documentation/mainboard/hp/z220_sff.md @@ -44,8 +44,17 @@ The SPI flash can be accessed using [flashrom]. External programming with an SPI adapter and [flashrom] does work, but it powers the whole southbridge complex. You need to supply enough current through the programming adapter. -If you want to use a SOIC pomona test clip, you have to cut the 2nd DRAM DIMM holder, -as otherwise there's not enough space near the flash. +If you want to use a SOIC pomona test clip, you have to cut the 2nd DRAM DIMM holder, as +otherwise there's not enough space near the flash. + +In both case, if ME has not been completely disabled, ME/AMT Flash Override jumper had better +be temporary closed for flashing to disable the locking of regions, and prevent ME to run and +interfere. + +## Side note +The mainboard of [HP Compaq Elite 8300 SFF] is very similar to the one of Z220 SFF, except +that Compaq Elite 8300 uses Q77 instead of C216 for its PCH, and their boot firmwares are +even interchangeable, so should do coreboot images built for them. ## Technology @@ -66,5 +75,6 @@ as otherwise there's not enough space near the flash. ``` [HP Z220 SFF Workstation]: https://support.hp.com/za-en/document/c03386950 +[HP Compaq Elite 8300 SFF]: https://support.hp.com/us-en/document/c03345460 [HP]: https://www.hp.com/ [flashrom]: https://flashrom.org/Flashrom -- cgit v1.2.3