[coreboot] Patch set updated for coreboot: 583280c Persimmon DSDT: Remove INI method from AZHD device
Mike Loptien (mike.loptien@se-eng.com)
gerrit at coreboot.org
Thu Mar 14 23:35:50 CET 2013
Mike Loptien (mike.loptien at se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2726
-gerrit
commit 583280c34cdb2ef182c45e0124494e81921f2ad1
Author: Mike Loptien <mike.loptien at 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. Comparing to AMI bios,
they setup these same bit fields in an OperatingRegion
but never write to them.
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 at 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) {
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