Memory and pmap

[Markus Ritzer]

Hello!

I try to port OpenBSD to the Microsoft Xbox (the old one). My OpenBSD Kernel 
boots until it crashes while handling memory related things. FreeBSD, which 
is already ported, has this code:

arch_i386_is_xbox tells if it is an Xbox and
arch_i386_xbox_memsize is set to 64 oder 128, depend how much memory you have.


#ifdef XBOX
        if (arch_i386_is_xbox) {
                /*
                 * We queried the memory size before, so chop off 4MB for
                 * the framebuffer and inform the OS of this.
                 */
                physmap[0] = 0;
                physmap[1] = (arch_i386_xbox_memsize * 1024 * 1024) - 
XBOX_FB_SIZE;
                physmap_idx = 0;
                goto physmap_done;
        }
#endif


It sets up the physmap. I looked for hours on the code of OpenBSD, but I 
cannot really find out how this is done here. The code belongs to the 
function init386() in machdep.c.

Is there an equivalent struct in OpenBSD to FreeBSD's physmap ?


Thank you in advance,

Markus Ritzer