Re: [coreboot] [PATCH] make I/O APIC IDs and processor APIC IDs unique (asus/m4a785-m)

[Peter Stuge]

Scott Duplichan wrote:
> Assigning a unique id to the SB ioapic is not as simple as choosing
> the next biggest available value, because the ioapic is
> traditionally a 4-bit value.

Did you look at how the K8 support does this? I think this may
already be handled there, maybe it's a useful reference.
> +++ src/southbridge/amd/sb700/sb700_sm.c	(working copy)
> #if (CONFIG_APIC_ID_OFFSET == 0 && CONFIG_MAX_CPUS * CONFIG_MAX_PHYSICAL_CPUS < 16)

..
> +++ src/mainboard/asus/m4a785-m/acpi_tables.c	(working copy)
> #if (CONFIG_APIC_ID_OFFSET == 0 && CONFIG_MAX_CPUS * CONFIG_MAX_PHYSICAL_CPUS < 16)
> #define IO_APIC_ID (CONFIG_MAX_CPUS * CONFIG_MAX_PHYSICAL_CPUS)
> #else
> #define IO_APIC_ID 0
> #endif

Is there a header file in north or southbridge that could be used to
store the logic?

//Peter