From: Christian Kohlschütter Date: Tue, 27 Sep 2022 15:05:21 +0000 (+0000) Subject: rk3399: r4s: Derive local MAC address if EEPROM is missing X-Git-Url: http://git.dujemihanovic.xyz/html/index.html?a=commitdiff_plain;h=c2d5edff916379abd2da4590e8171c965d9a3e1d;p=u-boot.git rk3399: r4s: Derive local MAC address if EEPROM is missing Some RK3399 boards, such as newer revisions of NanoPi R4S, do not provide an EEPROM chip containing a globally unique MAC address. Currently, this means that a randomly generated temporary MAC address may be generated each time the device is rebooted, leading to ARP cache issues and other confusing bugs. Since RK3399 CPUs provide a built-in unique serial number, we can reliably derive a locally MAC address from it by reading the corresponding bits from the non-secure efuse block. Enable configuration options that allow deriving a local MAC address from the CPU serial number. --- diff --git a/configs/nanopi-r4s-rk3399_defconfig b/configs/nanopi-r4s-rk3399_defconfig index a41e774b0c..ad36f7ce67 100644 --- a/configs/nanopi-r4s-rk3399_defconfig +++ b/configs/nanopi-r4s-rk3399_defconfig @@ -78,3 +78,7 @@ CONFIG_VIDEO_ROCKCHIP=y CONFIG_DISPLAY_ROCKCHIP_HDMI=y CONFIG_SPL_TINY_MEMSET=y CONFIG_ERRNO_STR=y +CONFIG_MISC=y +CONFIG_MISC_INIT_R=y +CONFIG_ROCKCHIP_EFUSE=y +CONFIG_ROCKCHIP_OTP=y