Improve handling of Local Access Windows on MPC85xx systems:

- detect number of LAWs in run time and initalize accordingly
- introduce decode windows target IDs used in MPC8572
- other minor updates

Obtained from:	Freescale, Semihalf

1 files changed, 11 insertions, 0 deletions

diff --git a/sys/powerpc/include/cpufunc.h b/sys/powerpc/include/cpufunc.h
index f02ff3b..3eb0ac0 100644
--- a/sys/powerpc/include/cpufunc.h
+++ b/sys/powerpc/include/cpufunc.h
@@ -44,6 +44,7 @@ powerpc_mb(void)
 #include <sys/types.h>
 
 #include <machine/psl.h>
+#include <machine/spr.h>
 
 struct thread;
 
@@ -122,6 +123,16 @@ mfpvr(void)
 	return (value);
 }
 
+static __inline register_t
+mfsvr(void)
+{
+	register_t	value;
+
+	__asm __volatile ("mfspr %0, %1" : "=r"(value) : "K"(SPR_SVR));
+
+	return (value);
+}
+
 static __inline void
 eieio(void)
 {