You meand the FRAMBUFFER_CONSOLE?
I took the kernel-power sources, changed the rc51_defconfig fiel (i think in the debian subdir) and rebuild the kernel acoording to the instructions in the readme (again in the debian subtree).
boolog is working fine, but it boots to fat to really see anything. And once the graphic device initialised the bootlog is gone.
Most of it can be reviewed when you look at the dmesg command, or by installing the sysklog package. Unfortunately the output of pre-init/init is not captured.