Index: sys/powerpc/powerpc/machdep.c
===================================================================
--- sys/powerpc/powerpc/machdep.c	(revision 361555)
+++ sys/powerpc/powerpc/machdep.c	(working copy)
@@ -405,6 +405,12 @@
 #else
 	__asm __volatile("mr 2,%0" :: "r"(&thread0));
 #endif
+	/*
+	 * Do some initial pcpu setup on the boot processor.
+	 * This will be overwritten later with the correct one.
+	 */
+	pc = &__pcpu[0];
+        __asm __volatile("mtsprg 0, %0" :: "r"(pc));
 
 	/*
 	 * Init mutexes, which we use heavily in PMAP