Damien Zammit has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/63318 )
Change subject: doc/mb/hp/z220_sff: Add flash override jumper info ......................................................................
doc/mb/hp/z220_sff: Add flash override jumper info
Change-Id: Ia23f73d97d2fab0c561b33656a09709d42cb2f73 Signed-off-by: Damien Zammit damien@zamaudio.com --- M Documentation/mainboard/hp/z220_sff.md 1 file changed, 4 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/18/63318/1
diff --git a/Documentation/mainboard/hp/z220_sff.md b/Documentation/mainboard/hp/z220_sff.md index 0dfa653..6084e96 100644 --- a/Documentation/mainboard/hp/z220_sff.md +++ b/Documentation/mainboard/hp/z220_sff.md @@ -39,6 +39,10 @@
The SPI flash can be accessed using [flashrom].
+The descriptor is read-only by default and the ME region is locked. +However, there is a jumper on the board marked `FDO` (flash descriptor override). +Setting the jumper gives you unrestricted r/w access to the whole flash internally. + ### External programming
External programming with an SPI adapter and [flashrom] does work, but it powers the