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-rw-r--r--src/mainboard/pcengines/apu2/mainboard.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/src/mainboard/pcengines/apu2/mainboard.c b/src/mainboard/pcengines/apu2/mainboard.c
index 742135571a..d2ab63822b 100644
--- a/src/mainboard/pcengines/apu2/mainboard.c
+++ b/src/mainboard/pcengines/apu2/mainboard.c
@@ -191,6 +191,38 @@ static void mainboard_enable(device_t dev)
}
/*
+ * We will stuff a modified version of the first NICs (BDF 1:0.0) MAC address
+ * into the smbios serial number location.
+ */
+const char *smbios_mainboard_serial_number(void)
+{
+ static char serial[10];
+ device_t nic_dev;
+ uintptr_t bar10;
+ u32 mac_addr = 0;
+ int i;
+
+ nic_dev = dev_find_slot(1, PCI_DEVFN(0, 0));
+ if ((serial[0] != 0) || !nic_dev)
+ return serial;
+
+ /* Read in the last 3 bytes of NIC's MAC address. */
+ bar10 = pci_read_config32(nic_dev, 0x10);
+ bar10 &= 0xFFFE0000;
+ bar10 += 0x5400;
+ for (i = 3; i < 6; i++) {
+ mac_addr <<= 8;
+ mac_addr |= read8((u8 *)bar10 + i);
+ }
+ mac_addr &= 0x00FFFFFF;
+ mac_addr /= 4;
+ mac_addr -= 64;
+
+ snprintf(serial, sizeof(serial), "%d", mac_addr);
+ return serial;
+}
+
+/*
* We will stuff the memory size into the smbios sku location.
*/
const char *smbios_mainboard_sku(void)