Andreas Färber wrote:
I've dropped the above patch in favor of a more readable ppc-only one:
diff --git a/arch/ppc/qemu/ofmem.c b/arch/ppc/qemu/ofmem.c index 7631a1c..2a5eca2 100644 --- a/arch/ppc/qemu/ofmem.c +++ b/arch/ppc/qemu/ofmem.c @@ -431,4 +431,5 @@ ofmem_init( void )
ofmem_map( 0, 0, get_ram_bottom(), 0 ); ofmem_map( get_ram_top(), get_ram_top(), ofmem->ramsize -get_ram_top(), 0);
- ofmem_claim(get_ram_top(), ofmem->ramsize - get_ram_top(), 0);
}
ofmem_common.c:is_free considers 0x07f00000 free because it only sees one range in ofmem->phys_range, 0x80000000 size 962560. Thus, I simply claim the reserved part of RAM - no idea what side effects this may have...
On sparc64, instead of ofmem_map, opmem_map_page_range is called, but no ofmem_claim either.
On SPARC64 I think ofmem_walk_boot_map/ofmem_map_page_range are used to set up the translations to cover the regions of memory used to hold OpenBIOS and beyond. According to the spec, a standard claim should NOT automatically generate a mapping IIRC as I had to fix this to get SPARC64 to boot further under OpenSolaris.
Either way Haiku then hangs while trying to set the first segment register (mtsrin): http://dev.haiku-os.org/browser/haiku/trunk/src/system/boot/platform/openfir...
Interesting. It's great to see you making progress with this :)
ATB,
Mark.