Mike Loptien (mike.loptien@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2726
-gerrit
commit eb5a1458946b4d85e8b4246b4251edf2815a370b Author: Mike Loptien mike.loptien@se-eng.com Date: Thu Mar 14 16:07:09 2013 -0600
Persimmon 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
Change-Id: If8d86f959822d528c44ab011a851659d486289b5 Signed-off-by: Mike Loptien mike.loptien@se-eng.com --- src/mainboard/amd/persimmon/dsdt.asl | 8 -------- 1 file changed, 8 deletions(-)
diff --git a/src/mainboard/amd/persimmon/dsdt.asl b/src/mainboard/amd/persimmon/dsdt.asl index dff5917..acc85c6 100644 --- a/src/mainboard/amd/persimmon/dsdt.asl +++ b/src/mainboard/amd/persimmon/dsdt.asl @@ -1385,14 +1385,6 @@ 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) {