I have used coreboot and successfully boot ubuntu 14.04 (only console mode). But kernel couldn't find proper MAC address and only ff:ff:ff:ff:ff:ff is printed.
When kernel is booted, r8169 module is successfully loaded but it failed to find proper MAC address with following messages.
[ 1.165748] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded [ 1.165850] r8169 0000:04:00.0: can't disable ASPM; OS doesn't have ASPM control [ 1.166010] r8169 0000:04:00.0 (unregistered net_device): unknown MAC, using family default [ 1.176236] r8169 0000:04:00.0 (unregistered net_device): rtl_chipcmd_cond == 1 (loop: 100, delay: 100). [ 1.176448] r8169 0000:04:00.0: irq 43 for MSI/MSI-X [ 1.176609] r8169 0000:04:00.0 eth0: RTL8168b/8111b at 0xffffc900003ac000, ff:ff:ff:ff:ff:ff, XID 9cf0f8ff IRQ 43 [ 1.176732] r8169 0000:04:00.0 eth0: jumbo features [frames: 4080 bytes, tx checksumming: ko]
I found that, with normal BIOS, MAC address are located within PCI I/O memory space pointed by 2nd base address register of ethernet PCI device. But with coreboot, memory space pointed by 2nd BAR of ethernet device only contains 0xff.
I tried to figure out how PCI I/O memory space is initialized and allocated, but i'm stuck now and need some helps. I only found some hints in kernel log that following messages are only shown with coreboot booting for ethernet pci device. ... [ 0.120164] pci 0000:04:00.0: no compatible bridge window for [mem 0xc8010000-0xc8010fff 64bit pref] [ 0.120164] pci 0000:04:00.0: no compatible bridge window for [mem 0xc8000000-0xc800ffff 64bit pref] ... [ 0.271531] pci 0000:04:00.0: BAR 4: can't assign mem pref (size 0x10000) [ 0.271620] pci 0000:04:00.0: BAR 4: trying firmware assignment [mem 0xc8000000-0xc800ffff 64bit pref] [ 0.271724] pci 0000:04:00.0: BAR 4: assigned [mem 0xc8000000-0xc800ffff 64bit pref] ...
Is there anyone who knows how to handle this situation? It's okay for me to update kernel source (e.g. r8169 module) instead of coreboot source code. I just want to know what the problem is and any possible way to resolve it.
I'm using GIGABYTE GA-MA785GMT-UD2H (rev 1.1) with external graphic card (nvida GTS 250). I have uploaded detailed information using board_status.sh Following is link for the information. http://review.coreboot.org/gitweb?p=board-status.git;a=commit;h=dedf456d2574...
Thank you.
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YongGon Kim