1Rebuilding u-boot for Cyrus 2 3The Cyrus defconfigs are Cyrus_P5020_defconfig and Cyrus_P5040_defconfig. 4 5They currently disable size optimization in order to avoid a relocation 6bug in some versions of GCC. As the output size is a constant, the size 7optimization is not currently important. 8 9Cyrus boots off a microSD card in a slot on the motherboard. This requires 10that the u-boot is built for the Pre-Boot Loader on the P5020/P5040. 11In order to reflash u-boot, you must download u-boot.pbl, then write it 12onto the card. To do that from u-boot: 13 14> tftp 1000000 u-boot.pbl 15> mmc write 1000000 8 672 16 17If you want to do this via a card reader in linux: 18 19> dd if=u-boot.pbl of=/dev/sdX bs=512 oseek=8 20