On Sat, Mar 01, 2008 at 07:13:15AM -0600, Josh Boyer wrote: > On Fri, 29 Feb 2008 23:02:50 -0600 > Olof Johansson <[EMAIL PROTECTED]> wrote: > > > On Fri, Feb 29, 2008 at 08:30:15PM -0600, Josh Boyer wrote: > > > > > > poor man's debugging works fine if a serial port is available, but my > > > > Sequoia platform doesn't get that far! I use u-boot to download and > > > > boot my image, and I don't get any serial output after the boot > > > > completes: > > > > > > By "poking characters out the serial port" I meant I literally coded up > > > assembly functions to setup MMU translations and poke hex values at hard > > > coded addresses. That's why it's "poor man's". If you had a working > > > serial port out of the box, that would be a luxury ;). > > > > Does 4xx have support for udbg and xmon? That would be a good first step > > in getting an in-kernel debugger facility going. > > Yes. Or at least it did as of a few kernel releases ago when I last > tested it. It's helpful for a number of thing, but debugging extremely > early stuff isn't possible with it.
Right, most in-kernel debuggers will be useless for that, so I doubt kgdb will help in those cases either. -Olof _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
