Makefile changes for symbols
Eric W. Biederman
ebiederman at lnxi.com
Wed Nov 3 13:40:01 CET 2004
Stefan Reinauer <stepan at openbios.org> writes:
> * Eric W. Biederman <ebiederman at lnxi.com> [041026 12:50]:
> > Stefan Reinauer <stepan at openbios.org> writes:
> > > Now that A stepping CPUs start dying out, could we not switch the reset
> > > mechanism to use LDTSTOP instead of a complete reset?
> > > It's more solid and a lot faster.
> > Solid? There are several errata with using LDTSTOP and you can not use it
> > memory is initialized.
> We don't do this anyways, do we?
Yes. We avoid it but the generic code is run after memory is initialized.
> In situations with marginal timing for RESET#, there is less chance of
> something going wrong. Hardware is rarely perfect, and LDTSTOP# affects
> less of it, so it is a little more robust.
Possibly. At the same time reset# must be implemented and work correctly, as reset# is used
to during board power on. Whereas it is not fatal if LDTSTOP# is implemented incorrectly.
I think you can tweak the calls to reset in the romcc compiled code to use LDTSTOP# on a per
motherboard basis so it may be worth trying to use LDTSTOP#.
More information about the coreboot