[coreboot] AMD 690/SB600 ACPI bug?

[Stefan Reinauer]

Carl-Daniel Hailfinger wrote:
> Hi,
>
> I read through the AMD 690/SB600 ACPI code and saw that
> src/mainboard/amd/pistachio/acpi/dsdt.asl
> src/mainboard/amd/dbm690t/acpi/dsdt.asl
> src/mainboard/technexion/tim8690/acpi/dsdt.asl
> all read STB5 from PCIe config space and then use the result as address
> of the SATA BAR5 without any proper bitmasking. For non-prefetchable
> 32-bit memory BARs this is OK, but if the BAR is either 64-bit or
> prefetchable or not memory, accesses to BAR5 will be screwed up.
>
>   
Isn't the BAR always memory for the SB600 SATA device?

> Comments are appreciated. I think that SATA BAR5 is 32-bit no-prefetch
> memory, but since SATA does not work if I boot with 4 GB RAM, I'm pretty
> paranoid about everything related to 32/64 bit issues.
>
> Regards,
> Carl-Daniel
>
>   


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