1 files changed, 46 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon2/startup/bspstart.c b/c/src/lib/libbsp/sparc/leon2/startup/bspstart.c
new file mode 100644
index 0000000000..899c4dd8aa
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/leon2/startup/bspstart.c
@@ -0,0 +1,46 @@
+/*
+ *  LEON2 Cache Snooping Support
+ *
+ *
+ *  COPYRIGHT (c) 1989-2009.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  Ported to ERC32 implementation of the SPARC by On-Line Applications
+ *  Research Corporation (OAR) under contract to the European Space
+ *  Agency (ESA).
+ *
+ *  ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
+ *  European Space Agency.
+ *
+ *  $Id$
+ */
+
+#include <bsp.h>
+#include <bsp/bootcard.h>
+
+/*
+ * Tells us if data cache snooping is available
+ */ 
+int CPU_SPARC_HAS_SNOOPING;
+
+/*
+ * set_snooping
+ * 
+ * Read the data cache configuration register to determine if
+ * bus snooping is available. This is needed for some drivers so
+ * that they can select the most efficient copy routines.  
+ */
+static inline int set_snooping(void) 
+{
+  unsigned int tmp = *(unsigned int *)0x80000014; /* Cache control register */
+  return ((tmp>>23) & 1); /* Data cache snooping enabled */
+}
+
+void bsp_start( void )
+{
+  CPU_SPARC_HAS_SNOOPING = set_snooping();
+}