Andrew Lunn wrote: > On Fri, Jun 08, 2007 at 04:51:23PM +0300, Sergei Gavrikov wrote: > > Hello, > > > > Does exist a way (like FLASH_P2V macro) to manage flash banking using > > _generic_PIO_? I have 1 part of the solid 2M Intel 28fxxx flash, but I > > cannot use A20 line in a address mode. That line is a generic PIO line. > > Should I copy a generic 28fxxx driver code in my hal/devs/flash and > > tweak that source or there is more elegant way in eCos flash devices > > world? > > There is no existing solution to this that i know of. > > The flash_v2 branch has some interesting possibilities. It supports > multiple flash drivers in a flexible way. It also supports a form of > virtual addresses. So with the V2 branch you could have the 28fxxx > driver at the physical address of the flash, and it would drive which
Andrew, I am a bit confused about a joining 'flash_v2' branch with the latest anon CVS tree. When I do cvs -z3 up -j flash_v2 io/flash ... I get the reports about collisions, and if I use 'flash_v2' cvs -z3 up -r flash_v2 io/flash ... it seems for me that I fullfil some downgrades against anon CVS sources. Should that occur? Where am I wrong? It's possible I have to specify some DATE mark with 'tag. Please, tip me how to merge 'flash_v2' branch with latest sources properly? Thank you. Kind regards, -- Sergei > ever bank is currently mapped in. On top of that you have a virtual > driver which implements the full 2M address range but at a different > address. It would set the GPIO line as appropriate and then pass > requests onto the physical driver, mapping the addresses as > appropriate. > > If you do decide to implement this, it would be great to have it > contributed back. It should be possible to make the virtual driver > generic with a hardware specific package which implements the bank > manipulation function. I can help with the design and testing. It is > something i thought about doing a while ago, but never got around to. > > Andrew -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
