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-rw-r--r--src/mainboard/pcengines/apu1/mainboard.c14
-rw-r--r--src/mainboard/pcengines/apu2/mainboard.c17
2 files changed, 15 insertions, 16 deletions
diff --git a/src/mainboard/pcengines/apu1/mainboard.c b/src/mainboard/pcengines/apu1/mainboard.c
index e5e30e031c..088c839239 100644
--- a/src/mainboard/pcengines/apu1/mainboard.c
+++ b/src/mainboard/pcengines/apu1/mainboard.c
@@ -206,17 +206,23 @@ static void mainboard_enable(struct device *dev)
const char *smbios_mainboard_serial_number(void)
{
static char serial[10];
- struct device *nic_dev;
+ struct device *dev;
uintptr_t bar18;
u32 mac_addr = 0;
int i;
- nic_dev = dev_find_slot(1, PCI_DEVFN(0, 0));
- if ((serial[0] != 0) || !nic_dev)
+ /* Already initialized. */
+ if (serial[0] != 0)
+ return serial;
+
+ dev = pcidev_on_root(4, 0);
+ if (dev)
+ dev = pcidev_path_behind(dev->link_list, PCI_DEVFN(0, 0));
+ if (!dev)
return serial;
/* Read in the last 3 bytes of NIC's MAC address. */
- bar18 = pci_read_config32(nic_dev, 0x18);
+ bar18 = pci_read_config32(dev, 0x18);
bar18 &= 0xFFFFFC00;
for (i = 3; i < 6; i++) {
mac_addr <<= 8;
diff --git a/src/mainboard/pcengines/apu2/mainboard.c b/src/mainboard/pcengines/apu2/mainboard.c
index 5a19d20efc..682120bc65 100644
--- a/src/mainboard/pcengines/apu2/mainboard.c
+++ b/src/mainboard/pcengines/apu2/mainboard.c
@@ -197,22 +197,15 @@ const char *smbios_mainboard_serial_number(void)
struct device *dev;
uintptr_t bar10;
u32 mac_addr = 0;
- u32 bus_no;
int i;
- /*
- * 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 = pcidev_on_root(2, 2);
- if ((serial[0] != 0) || !dev)
+ /* Already initialized. */
+ if (serial[0] != 0)
return serial;
- bus_no = dev->link_list->secondary;
- dev = dev_find_slot(bus_no, PCI_DEVFN(0, 0));
+ dev = pcidev_on_root(2, 2);
+ if (dev)
+ dev = pcidev_path_behind(dev->link_list, PCI_DEVFN(0, 0));
if (!dev)
return serial;