Timur Tabi wrote:
Jerry Van Baren wrote:
Arrgh, I forgot about the 8260 master + 7 slaves mode, which fills the first 256 bytes with HRCWs. As a result, we cannot put the magic number and version at offset 0x40 like I did with the 8360 (well, we could do it, but only if the system doesn't have slaves). We could, however, put the magic number and version in a different vector area that has room (e.g. offset 0x240).
Or, you could tag the version string with a checksum and a signature, then have the application scan memory until it finds it. That way, you could put it wherever you want, even in different places on different systems, and it would still work.
Joakim asked me to ack or nack this patch, but at this point I can't tell who wants what. Can someone summarize the status of this patch for me?
Hi Timur,
The root post and patch is http://article.gmane.org/gmane.comp.boot-loaders.u-boot/25427 which is a patch for the 83xx and is what Joakim is interested in (tested on the MPC8360EMDS). The posting (above) was a followup. I intended to do an equivalent patch for the 8260, but decided not to due to the level of effort vs. reward.
The git repository with my patches is at: http://www.cideas.us/cgi-bin/gitweb.cgi Actual repository: http://www.cideas.us/cgi-bin/gitweb.cgi?p=u-boot/u-boot-mpc83xx;a=summary
Branches: * version-in-text - Put the version (and magic) after the HRCW. * lowboot - Add high/lowboot configuration to the Makefile, etc.
Thanks, gvb