[coreboot] ACPI strangeness on Asus M2A-VM
Carl-Daniel Hailfinger
c-d.hailfinger.devel.2006 at gmx.net
Tue Mar 17 13:48:22 CET 2009
Hi,
I believe I should not getting the following ACPI debug message (and
similar messages) with only 2 GB RAM installed:
evregion-0398 [00] ev_address_space_dispa: Handler ffff8800773c9ae0
(@ffffffff803a9598) Address 0000000100000128 [SystemMemory]
evregion-0398 [00] ev_address_space_dispa: Handler ffff8800773c9ae0
(@ffffffff803a9598) Address 0000000100000131 [SystemMemory]
The address in that message is 128/131 bytes above the 4 GB boundary.
/proc/iomem says no device lives there. AFAICS that means ACPI tries to
access nonexisting memory.
The machine boots fine, but once I plug in 4 GB RAM, ACPI still tries to
access the address above although real memory lives at that location and
booting fails with the following messages:
ACPI Error (exregion-0164): Could not map memory at 0000000100000128,
size ED7 [20070126]
ACPI Exception (evregion-0420): AE_NO_MEMORY, Returned by Handler for
[SystemMemory] [20070126]
ACPI Exception (dswexec-0462): AE_NO_MEMORY, While resolving operands
for [LGreater] [20070126]
ACPI Error (psparse-0537): Method parse/execution failed
[\_SB_.PCI0.STCR.PMRY.PMST._STA] (Node ffff81013fa524f0), AE_NO_MEMORY
ACPI Error (uteval-0233): Method execution failed
[\_SB_.PCI0.STCR.PMRY.PMST._STA] (Node ffff81013fa524f0), AE_NO_MEMORY
[...]
ACPI Error (exregion-0164): Could not map memory at 0000000100000131,
size ECE [20070126]
ACPI Exception (evregion-0420): AE_NO_MEMORY, Returned by Handler for
[SystemMemory] [20070126]
ACPI Error (psparse-0537): Method parse/execution failed [\_GPE._L1F]
(Node ffff81013fa52330), AE_NO_MEMORY
ACPI Exception (evgpe-0577): AE_NO_MEMORY, while evaluating GPE method
[_L1F] [20070126]
The factory BIOS does not exhibit this behaviour.
Interesting is that the addresses above 4 GB look like they are offsets
to 0xffffffff, i.e. they all seem to be 4G-1+offset.
Attached are:
minicom_2009-03-17T053516.cap (coreboot+Linux, 2 GB)
minicom_2009-03-17T054446.cap (BIOS+Linux, 2 GB)
The following kernel parameters were used to improve debugging:
mminit_loglevel=4 acpi.debug_level=0x10807
Possibly interesting excerpts from the ACPI code:
Device(STCR) {
Name(_ADR, 0x00120000)
Device(PMRY)
{
Name(_ADR, 0)
Method(_GTM, 0x0, NotSerialized) {
Return(STTM)
}
Method(_STM, 0x3, NotSerialized) {}
Device(PMST) {
Name(_ADR, 0)
Method(_STA,0) {
if (LGreater(P0IS,0)) {
return (0x0F) /* sata is visible */
}
else {
return (0x00) /* sata is missing */
}
}
}/* end of PMST */
...
} /* end STCR */
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