+/*
+ * If there is no MAC address in the environment, then it will be initialized
+ * (silently) from the value in the OTP.
+ */
+static int setup_mac_address(void)
+{
+#if defined(CONFIG_NET)
+ int ret;
+ int i;
+ u32 otp[2];
+ uchar enetaddr[6];
+ struct udevice *dev;
+
+ /* MAC already in environment */
+ if (eth_env_get_enetaddr("ethaddr", enetaddr))
+ return 0;
+
+ ret = uclass_get_device_by_driver(UCLASS_MISC,
+ DM_GET_DRIVER(stm32mp_bsec),
+ &dev);
+ if (ret)
+ return ret;
+
+ ret = misc_read(dev, BSEC_OTP_MAC * 4 + STM32_BSEC_OTP_OFFSET,
+ otp, sizeof(otp));
+ if (ret)
+ return ret;
+
+ for (i = 0; i < 6; i++)
+ enetaddr[i] = ((uint8_t *)&otp)[i];
+
+ if (!is_valid_ethaddr(enetaddr)) {
+ pr_err("invalid MAC address in OTP %pM", enetaddr);
+ return -EINVAL;
+ }
+ pr_debug("OTP MAC address = %pM\n", enetaddr);
+ ret = !eth_env_set_enetaddr("ethaddr", enetaddr);
+ if (!ret)
+ pr_err("Failed to set mac address %pM from OTP: %d\n",
+ enetaddr, ret);
+#endif
+
+ return 0;
+}
+
+static int setup_serial_number(void)
+{
+ char serial_string[25];
+ u32 otp[3] = {0, 0, 0 };
+ struct udevice *dev;
+ int ret;
+
+ if (env_get("serial#"))
+ return 0;
+
+ ret = uclass_get_device_by_driver(UCLASS_MISC,
+ DM_GET_DRIVER(stm32mp_bsec),
+ &dev);
+ if (ret)
+ return ret;
+
+ ret = misc_read(dev, BSEC_OTP_SERIAL * 4 + STM32_BSEC_OTP_OFFSET,
+ otp, sizeof(otp));
+ if (ret)
+ return ret;
+
+ sprintf(serial_string, "%08x%08x%08x", otp[0], otp[1], otp[2]);
+ env_set("serial#", serial_string);
+
+ return 0;
+}
+