Old powermacs have a number of differences from current machines:
- there is no interrupt tree in the device tree, just interrupt
or AAPL,interrupt properties
- the chosen node in the device tree is called /chosen@0
- the OF claim method doesn't map the memory, so we have to do
an explicit map call as well
- there is no /chosen/cpu property on SMP machines
- the NVRAM isn't structured as a set of partitions.
This adapts the merged powermac support code to cope with these
issues.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c to
arch/powerpc/platforms/powermac/*.c and makes various minor tweaks
elsewhere. On the powermac we now initialize ppc_md by copying
the whole pmac_md structure into it, which required some changes in
the ordering of initializations of individual fields of it.
Signed-off-by: Paul Mackerras <paulus@samba.org>
With ARCH=powerpc, a spurious ifdef in prom_init prevented the
seconday hold loop being correctly copied down on Maple. With this
patch, Maple boots with ARCH=powerpc
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
We were initializing the btext stuff from prom_init(), thus breaking
the rule that all communication between prom_init() and the rest of
the kernel has to be via the flattened device tree. This removes
the btext initialization calls from prom_init() and initializes it
instead after the device tree is unflattened. It would be nice to
do it earlier, but that needs some more infrastructure to find the
properties we need in the flattened device tree.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This was preventing us from recognizing that we did actually
instantiate RTAS successfully on pSeries.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Although both ppc32 and ppc64 have a reloc_offset function, the ppc64
one produced the opposite sign to the ppc32 one. This standardizes
on the ppc32 sign and fixes the merged 64-bit code to account for that.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This brings in the ppc64 version of prom_init.c, prom.c and btext.c
and makes them work for ppc32. This also brings in the new calling
convention, where the first entry to the kernel (with r5 != 0) goes
to the prom_init code, which then restarts from the beginning (with
r5 == 0) after it has done its stuff.
For now this also brings in the ppc32 version of setup.c. It also
merges lmb.h.
Signed-off-by: Paul Mackerras <paulus@samba.org>
