qemu target

Eric W. Biederman ebiederman at lnxi.com
Wed Jun 30 11:40:01 CEST 2004

Stefan Reinauer <stepan at openbios.org> writes:

> * Eric W. Biederman <ebiederman at lnxi.com> [040630 04:53]:
> > Try commenting out console_init();  It looks like something
> > bad is going on there.    The post codes seem to be working so
> > you can likely use those to narrow down what is going wrong.
> hm. commenting console_init() out does not change anything. But thanks
> for the direction. I'll look into this

Ok then most likely you have managed to get the debugging printk's
compiled out or something like that.  It should be possible to insert
a -g statement into the build and then to step through the code execution
with gdb.  qemu appears to have support for gdb stubs.

The real interesting part is what is the debug level set to.  And you can
get that with port 0x80.

Maybe we are attempting to use cmos options and that is not properly implemented?


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