Flash driver for MSys DOC2000

[Iztok Zupet <iz at vsr dot si>]

Hello:

  Last Year I.ve written myself a DOC2000 flash driver for the PC target. It 
works fine with RedBoot and the application. I partitioned the flash disk 
into two partitions (one for RedBoot and one for application). The system 
BIOS boots the RedBoot flash image form the first partition (disk like boot).

 There's one crucial problem using such flash devices in Ecos. The Ecos 
expects the device to be memory mapped for read access. So my driver 
maintains a phisycal memory image of the flash disk ( on behalf of 
application memory).

 Up to now, it seems to me there's only one solution, namely to use virtual 
memory (and page fault exeptions), to bring the required flash disk region 
into memory on memory read reqest. But unfortunately the exeption handling 
for the PC target isn't done yet, the only exeption handler there is GDB.

Any purposals You might have are welcome.

Thanks
iz