2003-02-20 Till Straumann <strauman@slac.stanford.edu>

	PR 349/bsps
	* startup/pgtbl_setup.c, startup/pgtbl_activate.c: New files
	* startup/Makefile.am, startup/bspstart.c, startup/linkcmds:
	Let the powerpc/shared (+derived) BSPs use pagetable support
   	from libcpu.

1 files changed, 34 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/shared/startup/pgtbl_activate.c b/c/src/lib/libbsp/powerpc/shared/startup/pgtbl_activate.c
new file mode 100644
index 0000000000..32059b927f
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/shared/startup/pgtbl_activate.c
@@ -0,0 +1,34 @@
+/* $Id$ */
+
+#include <rtems.h>
+#include <libcpu/pte121.h>
+#include <libcpu/bat.h>
+
+/* Default activation of the page tables. This is a weak
+ * alias, so applications may easily override this
+ * default activation procedure.
+ */
+
+/* Author: Till Straumann, <strauman@slac.stanford.edu>, 4/2002 */
+
+void
+BSP_pgtbl_activate(Triv121PgTbl) __attribute__ (( weak, alias("__BSP_default_pgtbl_activate") ));
+
+void
+__BSP_default_pgtbl_activate(Triv121PgTbl pt)
+{
+	if (!pt) return;
+
+	/* switch the text/ro sements to RO only after
+	 * initializing the interrupts because the irq_mng
+	 * installs some code...
+	 *
+	 * activate the page table; it is still masked by the
+	 * DBAT0, however
+	 */
+	triv121PgTblActivate(pt);
+
+	/* finally, switch off DBAT0 */
+	setdbat(0,0,0,0,0);
+	/* At this point, DBAT0 is available for other use... */
+}