Mike Loptien (mike.loptien@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2741
-gerrit
commit af97ac3d5964115595e0922f372207a80b0c6750 Author: Mike Loptien mike.loptien@se-eng.com Date: Fri Mar 15 13:31:20 2013 -0600
AMD Fam14 DSDT: Remove INI method from AZHD device
I am removing the _INI method from the AZHD device because it does not seem to do anything and causes errors in the FWTS[1] (Firmware Test Suite) test 'method'. The INI method performs device specific initialization and is run when OSPM loads a description table. It must only access OperationRegions that have been indicated as available by the _REG (Region) method. We do not have a _REG method and during my testing, I added a REG method but it did not seem to make a difference in the PCI register space. The bit fields defined as NSDI (Disable No Snoop), NSDO (Disable No Snoop Override), and NSEN (Enable No Snoop Request) do not ever get written from their default values. And writing to these bit fields does not seem to be necessary because I did not notice any change in audio functionality.
In an effort to clean up as many FWTS errors as possible, I propose removing this method altogether. I have seen no change in operation (audio works with and without this method) and there does not seem to be any change in lspci or dmesg.
FWTS information can be found here: [1]: https://wiki.ubuntu.com/Kernel/Reference/fwts
This is the same chagne as made to Persimmon in Change-ID If8d86f: http://review.coreboot.org/#/c/2726/
Change-Id: Id560ea85a38f73aaba2c35447bbce46bd9c0d0dd Signed-off-by: Mike Loptien mike.loptien@se-eng.com --- src/mainboard/amd/inagua/dsdt.asl | 8 -------- src/mainboard/amd/south_station/dsdt.asl | 8 -------- src/mainboard/amd/union_station/dsdt.asl | 8 -------- 3 files changed, 24 deletions(-)
diff --git a/src/mainboard/amd/inagua/dsdt.asl b/src/mainboard/amd/inagua/dsdt.asl index 148d7b0..68cce17 100644 --- a/src/mainboard/amd/inagua/dsdt.asl +++ b/src/mainboard/amd/inagua/dsdt.asl @@ -1373,14 +1373,6 @@ DefinitionBlock ( offset (0x6C), MMDT, 16, } - - Method(_INI) { - If(LEqual(OSTP,3)){ /* If we are running Linux */ - Store(zero, NSEN) - Store(one, NSDO) - Store(one, NSDI) - } - } } /* end AZHD */
Device(LIBR) { diff --git a/src/mainboard/amd/south_station/dsdt.asl b/src/mainboard/amd/south_station/dsdt.asl index 148d7b0..68cce17 100644 --- a/src/mainboard/amd/south_station/dsdt.asl +++ b/src/mainboard/amd/south_station/dsdt.asl @@ -1373,14 +1373,6 @@ DefinitionBlock ( offset (0x6C), MMDT, 16, } - - Method(_INI) { - If(LEqual(OSTP,3)){ /* If we are running Linux */ - Store(zero, NSEN) - Store(one, NSDO) - Store(one, NSDI) - } - } } /* end AZHD */
Device(LIBR) { diff --git a/src/mainboard/amd/union_station/dsdt.asl b/src/mainboard/amd/union_station/dsdt.asl index 1d2435c..e3381e9 100644 --- a/src/mainboard/amd/union_station/dsdt.asl +++ b/src/mainboard/amd/union_station/dsdt.asl @@ -1374,14 +1374,6 @@ DefinitionBlock ( offset (0x6C), MMDT, 16, } - - Method(_INI) { - If(LEqual(OSTP,3)){ /* If we are running Linux */ - Store(zero, NSEN) - Store(one, NSDO) - Store(one, NSDI) - } - } } /* end AZHD */
Device(LIBR) {