Frank <frannk_m1 <at> yahoo.com> writes:
I had the same problem. It turns the idiot hardware engineer decided he would do byte swapping in hardware without telling me. To get around it, I just made the byte swapping code a noop (no byte swaping) and it worked.
Doing an endian swap every place in cmd_ide.c where it is reading the data register seems to have fixed the problem. I can now see the partitions on the disk and load a file from it. I don't understand why the endianness is different from what the u-boot code expects though, given how the data bits are connected to the peripheral bus:
CF D0..D15 => PPC D15..D0
D15 is lsb on PPC 16-bit mode bus. It is as if the u-boot code expects
CF D0..D7 => PPC D7..D0 CF D8..D15 => PPC D15..D8
Thanks,
Gregg