* OF tree flattening.
@ 2006-03-15 15:10 David Updegraff
0 siblings, 0 replies; only message in thread
From: David Updegraff @ 2006-03-15 15:10 UTC (permalink / raw)
To: linuxppc-embedded
Hi.
When OF device tree is flattened, the resultant struct has pointers into
the 'initial_boot_params' area.
I think that area needs 'reserving', since the text of various
properties are contained therein.
One could perhaps argue that the BootRom should do that, in the provided
OF-tree reserve maps... but if we're gonna keep pointers into the area,
seems we should protect it. Adding a
--------
lmb_reserve(__pa(initial_boot_params), initial_boot_params->totalsize);
------------
to early_init_devtree() worked for me.
There is of course then the problem alluded to in
kdump_move_device_tree(), that then this old DT should be un-reserved..
I don't have a suggestion for that problem; hope some of you do?
thnx.
-dbu.
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