Jerry Van Baren wrote:
Sam Song wrote:
Jerry Van Baren gerald.vanbaren@comcast.net wrote:
Put the version (and magic) after the HRCW. This puts it in a fixed location in flash, not at the
start
of flash but as close as we can get.
Nice effort. Space saving and better version check.
I guess the same change could apply for MPC8260/47/8.
Thanks,
Sam
Yes. Most boards have the version in the first bytes of flash, but this was not possible on the 82xx because of the HRCW, so it was put in .data. This set up was copied for the 83xx (which also has a HRCW). My change moves it back to .text just after the HRCW. I put also the u-boot magic number back in in honor of Wolfgang. ;-)
If you change the file names in the patch, it probably would apply. :-) I intend to do this (perhaps literally), but ran out of ambition tonight.
Best regards, gvb
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).
What we have works and has worked for several years. I don't have enough ambition and interest at this point to change this for the mpc8260.
Best regards, gvb