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Diffstat (limited to 'board/varisys/cyrus/README')
| -rw-r--r-- | board/varisys/cyrus/README | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/board/varisys/cyrus/README b/board/varisys/cyrus/README new file mode 100644 index 00000000000..9595dcb7cc3 --- /dev/null +++ b/board/varisys/cyrus/README @@ -0,0 +1,19 @@ +Rebuilding u-boot for Cyrus + +The Cyrus defconfigs are Cyrus_P5020_defconfig and Cyrus_P5040_defconfig. + +They currently disable size optimization in order to avoid a relocation +bug in some versions of GCC. As the output size is a constant, the size +optimization is not currently important. + +Cyrus boots off a microSD card in a slot on the motherboard. This requires +that the u-boot is built for the Pre-Boot Loader on the P5020/P5040. +In order to reflash u-boot, you must download u-boot.pbl, then write it +onto the card. To do that from u-boot: + +> tftp 1000000 u-boot.pbl +> mmc write 1000000 8 672 + +If you want to do this via a card reader in linux: + +> dd if=u-boot.pbl of=/dev/sdX bs=512 oseek=8 |