[coreboot] Can not have IRQ from ethernet device connected to the PCIe #4 in legacy mode
benoit.sansoni at gmail.com
Wed Feb 10 22:00:39 CET 2016
I am facing a legacy IRQ under OS.
I am currently using Coreboot + FSP on baytrail.
My OS is running with IRQ in legacy using PIRQ described in
Under the OS USB, SATA, SMBus are working well using legacy interrupt.
Nevertheless I have an ethernet device connected on the PCIe root #4 and
no IRQs are received.
I tried to change the IRQ in the interrupt line register without success.
I can compare also with a Phoenix BIOS, and with the same OS binary the
ethernet is working.
I check out also the ilb registers + 0x4d0 and 0x4d1 registers (ECL).
Everything is correctly initalized.
Do I need to activate/deactivate something in the PCIe root #4 to
forward legacy interrupt to the 8259 PIC ?
Many thanks in advance
More information about the coreboot