CVS commit: src/sys/arch/powerpc

Module Name:	src
Committed By:	rkujawa
Date:		Tue Jun 30 23:59:47 UTC 2026

Modified Files:
	src/sys/arch/powerpc/conf: files.ofw
	src/sys/arch/powerpc/oea: ofw_subr.S

Log Message:
Introduce EFIKA_OFW_WORKAROUNDS - patch OFW trampoline for EFIKA.

Long story short, is that SmartFirmware (EFIKA's OpenFirmware) misbehaves
on every OF call from the kernel by zeroing SDR1 and messing with BATs.

In the olden days, these problems were worked around with FIRMWORKSBUGS
option. However, that option does not work currently on EFIKA. Presumaly,
something has changed between 2012 and now, which causes FIRMWORKSBUGS
to hang on SmartFirmware very early (before NetBSD copyright banner is
printed).

So we get this kludge, which only does the bare minimum to let OFW
call succeed, and the kernel continue after the call.


To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/powerpc/conf/files.ofw
cvs rdiff -u -r1.20 -r1.21 src/sys/arch/powerpc/oea/ofw_subr.S

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.