[coreboot-gerrit] Patch merged into coreboot/master: 4b213a8 Intel i945: ACPI: Add _OSC method

gerrit at coreboot.org gerrit at coreboot.org
Thu Apr 18 02:48:05 CEST 2013

the following patch was just integrated into master:
commit 4b213a8d1fd02061c1e879ff98167bcb47f13bd2
Author: Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
Date:   Thu Mar 28 14:24:39 2013 +0100

    Intel i945: ACPI: Add _OSC method
    Add the ACPI Operating System Capabilities Method and let the
    operation system control everything.
    Commit »AMD Fam14 DSDT: Add OSC method« (00a0e76b) [1] is used as
    a template.
    The Lenovo X60 [2] running the Parabola GNU/Linux distribution [3] is
    used for testing.
    Before that change:
        $ dmesg | egrep -e OSC -e ASPM
        [    0.108036] pci_root PNP0A08:00: ACPI _OSC support notification failed, disabling PCIe ASPM
        [    0.108040] pci_root PNP0A08:00: Unable to request _OSC control (_OSC support mask: 0x08)
        [    0.118089] ACPI _OSC control for PCIe not granted, disabling ASPM
        [   16.874569] e1000e 0000:01:00.0: Disabling ASPM L0s L1
    With that change:
        $ dmesg | egrep -e OSC -e ASPM
        [    0.107962] pci_root PNP0A08:00: Requesting ACPI _OSC control (0x1d)
        [    0.108003] pci_root PNP0A08:00: ACPI _OSC control (0x1d) granted
        [    0.111052] pci 0000:01:00.0: disabling ASPM on pre-1.1 PCIe device.  You can enable it with 'pcie_aspm=force'
        [   17.537970] e1000e 0000:01:00.0: Disabling ASPM L0s L1
    [1] http://review.coreboot.org/2738
    [2] http://www.coreboot.org/Lenovo_x60x
    [3] https://parabolagnulinux.org/
    Change-Id: I1caffa44eea447d553c01caaf431f2db241ea5ea
    Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
    Signed-off-by: Paul Menzel <paulepanter at users.sourceforge.net>
    Reviewed-on: http://review.coreboot.org/2938
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich <rminnich at gmail.com>

Build-Tested: build bot (Jenkins) at Wed Apr 10 13:48:07 2013, giving +1
Reviewed-By: Ronald G. Minnich <rminnich at gmail.com> at Thu Apr 18 02:48:01 2013, giving +2
See http://review.coreboot.org/2938 for details.


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