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Add support for FSP ASPM and Clock PM configuration based on Kconfig
options: PCIEXP_ASPM, PCIEXP_CLK_PM and PCIEXP_L1_SUB_STATE. For some
use cases it may be desirable to disable ASPM and Clock PM to achieve
more deterministic and higher performance of PCIe devices.
TEST=Boot MSI PRO Z690-A DDR4 without ASPM and Clock PM. Confirm all
PCIe devices are still working and ASPM and Clock PM capabilities
are not present on the PCIe Root Ports.
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I6d9d11016bed89dcfee6909d0d3e3e2e56237a2f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69825
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Set all GPIOs to their target functions and do not depend on FSP to
configure them. The board support has stabilized and was tested with
many PCIe devices. There is no need to detect CLKREQ signals so we may
hardcode them.
TEST=Boot MSI PRO Z690-A DDR4 to Linux and check if all ASPM and Clock
PM features' state on PCIe root ports are the same before and after
the change.
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I01dc83ce23ca27525b8905665da942510f249824
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69823
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
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To be consistent with other occurrences, add a space around the bitwise
or operator.
Signed-off-by: Yuchen He <yuchenhe126@gmail.com>
Change-Id: I674311ae330789b75fe7d189ad0fddeae45efe02
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73865
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
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The NAF_VWE bit definition is already present in
src/soc/intel/common/block/include/intelblocks/gpio.h.
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I1fe713ee08438be49308f5e777cd466cdbc45d71
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65756
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
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Add the full PCIe root port configuration. Proper initialization of
the root ports depends on the correct GPIO programming including
virtual wires. Do not program the CLKREQ signals in coreboot to let FSP
detect and configure CLKREQ pads. Otherwise the CLKREQ pads are
reprogrammed by FSP despite having GpioOverride=1. The pads that
should not be touched by coreboot are left commented in the board GPIO
file. CLKREQ reprogramming caused undefined behavior when ASPM and
Clock PM was being enabled by coreboot on PCIe endpoints of CPU PCIe
x4 slot (coreboot printed a lot of exceptions and simply halted).
TEST=Boot the MSI PRO Z690-A DDR4 WiFi with all PCIe/M.2 slots
populated and check if they are detected and functional in Linux.
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I50199d2caf54509a72c5100acb770bf766327e7f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63656
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Based on the output of:
- inteltool from CB:63374
- intelp2m from CB:63403
TEST=Build coreboot binary for msi/ms7d5 and boot the board.
Change-Id: If37eaf875f8fcfc64299227744a8c40d304a0214
Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63490
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
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