On Thu, Jan 25, 2007 at 11:20:02PM -0500, Len Brown wrote:
> Alexey,
> Using pmtools-20061130 I get some warnings on a Tiger-2:
>
> [root@tiger lenb]# bin/acpidump >acpidump.out
> acpidump(4538): unaligned access to 0x6000000000008274, ip=0x4000000000002ab1
> acpidump(4538): unaligned access to 0x600000000000827c, ip=0x4000000000002ab1
>
> Bob,
> acpixtract also results in warnings when running,
> an error in the .dsl file, and inability to re-compile.
[...]
> [lenb@tiger ~]$ head -20 DSDT.dsl
> ACPI Error (nsaccess-0531): ACPI path has too many parent prefixes (^) - reached beyond root node [20061109]
No unaligned access here but I did see this error on another DSDT.
Basically disassembling a DSDT (to fix some errors), rebuilding it,
disassembling again added an External reference at the begininning of
the DSDT DefinitionBlock. If the first rebuild in the above sequence is
performed without optimizations (-oa) everithing is fine. Or eventually
remiving the external ref make re-re-building succeed.
This is the beginning of the diff of the original disassembled and the
optimized disassembled:
* Original Table Header:
* Signature "DSDT"
- * Length 0x0000F9A0 (63904)
+ * Length 0x0000ECCD (60621)
* Revision 0x01
* OEM ID "HP "
* OEM Table ID "nx7400"
* OEM Revision 0x00010000 (65536)
- * Creator ID "MSFT"
- * Creator Revision 0x0100000E (16777230)
+ * Creator ID "INTL"
+ * Creator Revision 0x20061109 (537268489)
*/
-DefinitionBlock ("../DSDT.aml", "DSDT", 1, "HP ", "nx7400", 0x00010000)
+DefinitionBlock ("DSDT.aml", "DSDT", 1, "HP ", "nx7400", 0x00010000)
{
- Name (C000, 0x00)
- Processor (\_PR.CPU0, 0x01, 0x00001010, 0x06)
+ External (^^^C003.C005.C19C)
+
+ Name (C000, Zero)
+ Processor (_PR.CPU0, 0x01, 0x080C5478, 0x06)
{
Full DSDT:
http://people.debian.org/~malattia/iasl/DSDT.dat
Some more info about the issue on Debian's BTS:
http://bugs.debian.org/407708
So here's maybe a more clear sequence:
# wget -q http://people.debian.org/~malattia/iasl/DSDT.dat
# wget -q http://people.debian.org/~malattia/iasl/dsdtF0A.patch
# iasl -d DSDT.dat
Intel ACPI Component Architecture
AML Disassembler version 20061109 [Jan 14 2007]
...
Disassembly completed, written to "DSDT.dsl"
# patch -p0 < dsdtF0A.patch
# iasl DSDT.dsl
...
Compilation complete. 0 Errors, 0 Warnings, 0 Remarks, 2153 Optimizations
# iasl -d DSDT.aml
...
Disassembly completed, written to "DSDT.dsl"
# iasl DSDT.dsl | head -n 20
Intel ACPI Component Architecture
ASL Optimizing Compiler version 20061109 [Jan 14 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a
ACPI Error (nsaccess-0531): ACPI path has too many parent prefixes (^) - reached beyond root node [20061109]
Maximum error count (200) exceeded
DSDT.dsl 20: External (^^^C003.C005.C19C)
Error 4014 - From ACPI CA Subsystem ^ (AE_NOT_FOUND Failure from lookup %s
)
DSDT.dsl 22: Name (C000, Zero)
Error 4062 - ^ Object does not exist (C000)
DSDT.dsl 23: Processor (_PR.CPU0, 0x01, 0x080C5478, 0x06)
Error 4063 - ^ Object not found or not accessible from scope (_PR.CPU0)
DSDT.dsl 25: Name (C001, Zero)
--
mattia
:wq!
-
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
