diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/pcengines/apu2/mainboard.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/src/mainboard/pcengines/apu2/mainboard.c b/src/mainboard/pcengines/apu2/mainboard.c index 35385c20ce..6a01a8b015 100644 --- a/src/mainboard/pcengines/apu2/mainboard.c +++ b/src/mainboard/pcengines/apu2/mainboard.c @@ -194,17 +194,30 @@ static void mainboard_final(void *chip_info) const char *smbios_mainboard_serial_number(void) { static char serial[10]; - struct device *nic_dev; + struct device *dev; uintptr_t bar10; u32 mac_addr = 0; + u32 bus_no; int i; - nic_dev = dev_find_slot(1, PCI_DEVFN(0, 0)); - if ((serial[0] != 0) || !nic_dev) + /* + * In case we have PCIe module connected to mPCIe2 slot, BDF 1:0.0 may + * not be a NIC, because mPCIe2 slot is routed to the very first PCIe + * bridge and the first NIC is connected to the second PCIe bridge. + * Read secondary bus number from the PCIe bridge where the first NIC is + * connected. + */ + dev = dev_find_slot(0, PCI_DEVFN(2, 2)); + if ((serial[0] != 0) || !dev) + return serial; + + bus_no = dev->link_list->secondary; + dev = dev_find_slot(bus_no, PCI_DEVFN(0, 0)); + if (!dev) return serial; /* Read in the last 3 bytes of NIC's MAC address. */ - bar10 = pci_read_config32(nic_dev, 0x10); + bar10 = pci_read_config32(dev, 0x10); bar10 &= 0xFFFE0000; bar10 += 0x5400; for (i = 3; i < 6; i++) { |