1 files changed, 63 insertions, 0 deletions
diff --git a/bsps/powerpc/ss555/clock/p_clock.c b/bsps/powerpc/ss555/clock/p_clock.c
new file mode 100644
index 0000000000..25785b083f
--- /dev/null
+++ b/bsps/powerpc/ss555/clock/p_clock.c
@@ -0,0 +1,63 @@
+/*
+ *  Clock Tick interrupt conexion code.
+ *
+ *  COPYRIGHT (c) 1989-1997.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may in
+ *  the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ *
+ *  SS555 port sponsored by Defence Research and Development Canada - Suffield
+ *  Copyright (C) 2004, Real-Time Systems Inc. (querbach@realtime.bc.ca)
+ *
+ *  Derived from c/src/lib/libbsp/powerpc/mbx8xx/clock/p_clock.c:
+ *
+ *  Modified to support the MPC750.
+ *  Modifications Copyright (c) 1999 Eric Valette valette@crf.canon.fr
+ */
+
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <rtems/bspIo.h>
+#include <mpc5xx.h>
+
+static rtems_irq_connect_data clockIrqData = {
+  CPU_PERIODIC_TIMER,
+  (rtems_irq_hdl)Clock_isr,
+  NULL,
+  (rtems_irq_enable)clockOn,
+  (rtems_irq_disable)clockOff,
+  (rtems_irq_is_enabled)clockIsOn
+};
+
+int BSP_disconnect_clock_handler (void)
+{
+  if (!BSP_get_current_rtems_irq_handler(&clockIrqData)) {
+     printk("Unable to stop system clock\n");
+    rtems_fatal_error_occurred(1);
+  }
+  return BSP_remove_rtems_irq_handler (&clockIrqData);
+}
+
+int BSP_connect_clock_handler (rtems_irq_hdl hdl)
+{
+  if (!BSP_get_current_rtems_irq_handler(&clockIrqData)) {
+     printk("Unable to get system clock handler\n");
+    rtems_fatal_error_occurred(1);
+  }
+  if (!BSP_remove_rtems_irq_handler (&clockIrqData)) {
+   printk("Unable to remove current system clock handler\n");
+    rtems_fatal_error_occurred(1);
+  }
+  /*
+   * Reinit structure
+   */
+  clockIrqData.name = CPU_PERIODIC_TIMER;
+  clockIrqData.hdl = (rtems_irq_hdl) hdl;
+  clockIrqData.on = (rtems_irq_enable)clockOn;
+  clockIrqData.off = (rtems_irq_enable)clockOff;
+  clockIrqData.isOn = (rtems_irq_is_enabled)clockIsOn;
+
+  return BSP_install_rtems_irq_handler (&clockIrqData);
+}