Hello all - I have completed the initial port of U-Boot to a custom PPC405/VirtexII Pro FPGA board and I am starting to look at ways to store the U-Boot environment in the CF card used for FPGA configuration by the Xilinx SystemAce. As it stands now, there is DOS FAT read support in U-Boot but no write support, so that would have to be added if the environment was to be stored as a DOS file on the CF card. Another option might be to partition the CF card so as to leave a few sectors unused and use low-level sector read/write routines to store the environment directly to the CF card. This solution seems straightforward, but seems somehow inelegant. I am leaning toward the approach of adding DOS FAT write support and adjusting the initial U-Boot environment to provide sufficient stack space to run the DOS filesystem code during initial boot. Does this seem reasonable? Does anyone know where the original DOS filesystem code came from?
Keith