On Tue, Apr 20, 2010 at 04:03:01PM -0600, Chris Rigg wrote: > Thanks guys. I'll take a look at this in more depth. It sounds like this > would be the suggested solution to my problem. > > Is there an example somewhere that you could point me towards? >
As this is a bit off-topic on this list, I'll reply to you with the patches attached. If anyone else wants the code, please ask me. Linux is seriously lacking a general purpose solution here. I've made some attempts at writing one, but haven't had the time to complete them. I'm happy to test a general solution anyone comes up with. I've been suggested that virtio would be a good choice here, since they have a highly optimized network driver. Ira > On Tue, Apr 20, 2010 at 3:37 PM, Scott McNutt <smcn...@psyent.com> wrote: > > > Hi Chris, > > > > Ira W. Snyder wrote: > > > >> My problem: > >>> If I have an in-memory filesystem on my board (the ramdisk), and I have > >>> the > >>> entire 256MB of memory accessible to the host over the PCI bus, you'd > >>> think > >>> I could write a tool (or find a tool) that I could point at a block of > >>> physical memory and have it recognize it as an ext2 filesystem and read > >>> it > >>> as such. Unfortunately, there doesn't appear to be a precedent for doing > >>> this. Is there a better way to accomplish my goal of getting my logs off > >>> the > >>> ramdisk on the board from the host? > >>> > >>> > >> I've solved a relatively similar problem here. I have a > >> mpc8349emds-based board that is a PCI target. I've written a couple of > >> smallish drivers for U-Boot and Linux that make the board seem like an > >> ethernet interface. > >> > > > > Ditto. Ira's suggestion is a very elegant and useful technique ... and > > has been used successfully for many applications. > > > > > > We tftp our kernel and boot our board over NFS using the "ethernet" > >> interface. > >> > > > > As Ira suggests, once your target appears as an addressable host, the > > sky's the limit. You can telnet/ssh into your target, run tftpd, > > run a web server for configuration/status, etc. Cool stuff! > > > > Regards, > > --Scott > > > > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
