H8QGI board has 2 IO-APICS with 56 IRQ’s:
IOAPIC[0]: GSI 0-23 - SB700 southbridge
IOAPIC[1]: GSI 24-55 - RD890 northbridge
`gDefaultApicDeviceInfoTable[]` structure in northbridge code
vendorcode/amd/cimx/rd890/nbIoApic.c
has IO-APIC interrupt mapping for HT and IOMMU set to last 31
IRQ pin (24+31=55).
CONST APIC_DEVICE_INFO gDefaultApicDeviceInfoTable[] = {
// Group Swizzling Port Int Pin
{0, 0, 31}, //HT
{0, 0, 31}, //IOMMU
[…]
Also the same value (55) can be found in original Supermicro BIOS ACPI DSDT.
Change-Id: Ie26da1f773716d1b7f5f5f884050ae799afc0b7e
Signed-off-by: Aladyshev Konstantin <aladyshev@nicevt.ru>
Reviewed-on: http://review.coreboot.org/2047
Tested-by: build bot (Jenkins)
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
ec3daf7e08