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Some serious changes to get qemu working with pci.

Browse source 
Also added comments. 

A big change is in the dts. In OFW trees, the hierarchy seems to be:
/root/cpu/northbridge 
          south
          other pci

note that the north is in the hierarchy under the south. This hierarchy
makes no sense on systems with a shared frontside bus, or at least I
don't see how it can. In those systems, it's easier to think about 
the CPUs AND northbridges as children of the front side bus. 

in LinuxBIOS, it has always been this:
/root/cpu/whatever
/root/northbridge/
                  south
                  other pci

There have been many discussions over how it ought to be, for 8 years
now, and we've always come back to how LB does it. So I have changed the 
dts for qemu for now to match LB's way of doing things. Note that the
new system is flexible enough that, on K8, we CAN do things as above:
/cpu@0/amd8knorthbridge/etc.
/cpu@1/amd8knorthbridge/etc.

But on qemu, for now, the root is the mainboard, and the CPU and
northbridge are siblings. 

I've added some informational printks, cleaned up pci_ops, and done
other things so that it builds and all seems to work -- until it hangs
hard in enumeration in i440bx ...

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@160 f3766cd6-281f-0410-b1cd-43a5c92072e9
This commit is contained in:
Ronald G. Minnich 2007-02-28 19:17:59 +00:00
commit b520f3201e
9 changed files with 68 additions and 11 deletions
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29
include/cpu/generic/x86/arch/pci_ops.h Normal file
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/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef ARCH_I386_PCI_OPS_H
#define ARCH_I386_PCI_OPS_H
const struct pci_bus_operations pci_cf8_conf1;
const struct pci_bus_operations pci_cf8_conf2;
#if MMCONF_SUPPORT==1
const struct pci_bus_operations pci_ops_mmconf;
#endif
void pci_set_method(struct device * dev);
#endif /* ARCH_I386_PCI_OPS_H */

16
include/cpu/generic/x86/arch/swab.h
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@ -1,3 +1,19 @@
/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _SWAB_H
#define _SWAB_H