SoCs from Skylake on have many settings as so called private con-
figuration registers (PCRs). These are organized as 256 ports with
a 64KiB space each. We use the Primary to Sideband (P2SB) bridge's
BAR to access them.
Change-Id: Iede4ac601355e2be377bc986d62d20098980ec35
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/19593
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The Primary to Sideband Bridge (P2SB) is the interface to Private Con-
figuration Registers (PCR) including GPIO configuration. Of course,
access is restricted to Intel partners and criminals, so the PCI device
is hidden from the OS. Probably we only need to fetch the SBREG_BAR
address and can hide the PCI device again after that.
Change-Id: Ic121a09f021708aab82ae4b9d76d6c3c6fb884fa
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/19588
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Youness Alaoui