PERFORCE change 227630 for review

[Bjoern A. Zeeb]

http://p4web.freebsd.org/@@227630?ac=10

Change 227630 by bz at bz_zenith on 2013/04/12 08:50:27

	Implement soft reset setting sr in sr and just in case loop
	endlessly afterwards.
	
	X-TODO: revisit for cheri2/SMP.

Affected files ...

.. //depot/projects/ctsrd/beribsd/src/sys/mips/beri/beri_machdep.c#11 edit

Differences ...

==== //depot/projects/ctsrd/beribsd/src/sys/mips/beri/beri_machdep.c#11 (text+ko) ====

@@ -116,14 +116,19 @@
 
 /*
  * Perform a board-level soft-reset.
- *
- * XXXRW: BERI doesn't yet have a board-level soft-reset.
  */
 void
 platform_reset(void)
 {
 
-	panic("%s: not yet", __func__);
+	/* XXX SMP will likely require us to do more. */
+	__asm__ __volatile__(
+		"mfc0 $k0, $12\n\t"
+		"li $k1, 0x00100000\n\t"
+		"or $k0, $k0, $k1\n\t"
+		"mtc0 $k0, $12\n");
+	for( ; ; )
+		__asm__ __volatile("wait");
 }
 
 void