[PATCH]Build mptable bus entries from device tree

[Patrick Georgi]

Hi,

attached patch adds code to create bus entries in the mptable from the
device tree instead of the hardcodes we do right now.

It also changes kontron/986lcd-m to use the new function, where its
advantage is starting to show:
As we support a given riser card (with pci bridge and bus), we currently
have to look for the card and add a bus and interrupt sources to the
mptable. With this patch, the bus is automatically added to the table.
Once interrupt sources are handled the same way, that special case could
be dropped completely (and such plug-in cards that add buses will be
properly supported on all boards)

I didn't adapt all the mptable.c files in the tree, as I feel the code
should be tested on a more diverse set of boards. Our table generation
code sometimes differs only so slightly, and I don't know in all cases
if the automatic handling would pick up those differences, or if they
actually matter (or are correct in the first place).

Signed-off-by: Patrick Georgi

[Peter Stuge]

Patrick Georgi wrote:
> attached patch adds code to create bus entries in the mptable from
> the device tree instead of the hardcodes we do right now.

\o/
> Signed-off-by: Patrick Georgi

Acked-by: Peter Stuge

I think it would be great to write a few lines about what changes
need to be made for boards to use this. Maybe on the wiki?

//Peter

[Patrick Georgi]

Am 25.06.2010 15:23, schrieb Peter Stuge:
> Acked-by: Peter Stuge

Committed as r5647
> I think it would be great to write a few lines about what changes
> need to be made for boards to use this. Maybe on the wiki?

I was thinking of adding this to http://www.coreboot.org/Flag_Days
The main difference to the existing documentation on that page is that
it is about changes that were implemented across the entire tree.
This change only affects a single board so far.

I'll do it this way:
A Flag_Days entry now, documenting the new function and how to migrate
boards.
Another Flag_Days entry once all upstream boards are migrated, while
making smp_write_bus (the "plumbing" function used for this) static (ie.
private)

Patrick