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