bsps: Move clock drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 89 insertions, 0 deletions

diff --git a/bsps/m68k/mvme162/clock/ckinit.c b/bsps/m68k/mvme162/clock/ckinit.c
new file mode 100644
index 0000000000..f4b680e170
--- /dev/null
+++ b/bsps/m68k/mvme162/clock/ckinit.c
@@ -0,0 +1,89 @@
+/*
+ *  This routine initializes the Tick Timer 2 on the MVME162 board.
+ *  The tick frequency is 1 millisecond.
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-1999.
+ *  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.org/license/LICENSE.
+ *
+ *  Modifications of respective RTEMS file: COPYRIGHT (c) 1994.
+ *  EISCAT Scientific Association. M.Savitski
+ *
+ *  This material is a part of the MVME162 Board Support Package
+ *  for the RTEMS executive. Its licensing policies are those of the
+ *  RTEMS above.
+ */
+
+#include <stdlib.h>
+
+#include <bsp.h>
+#include <rtems/clockdrv.h>
+
+#define MS_COUNT          1000            /* T2's countdown constant (1 ms) */
+#define CLOCK_INT_LEVEL   6               /* T2's interrupt level */
+
+uint32_t         Clock_isrs;                  /* ISRs until next tick */
+volatile uint32_t         Clock_driver_ticks; /* ticks since initialization */
+rtems_isr_entry  Old_ticker;
+
+void Clock_exit( void );
+
+#define CLOCK_VECTOR (VBR0 * 0x10 + 0x9)
+
+/*
+ *  ISR Handler
+ */
+static rtems_isr Clock_isr(rtems_vector_number vector)
+{
+  Clock_driver_ticks += 1;
+  lcsr->timer_cnt_2 = 0;            /* clear counter */
+  lcsr->intr_clear |= 0x02000000;
+
+  if ( Clock_isrs == 1 ) {
+    rtems_clock_tick();
+    Clock_isrs = rtems_configuration_get_microseconds_per_tick() / 1000;
+  }
+  else
+    Clock_isrs -= 1;
+}
+
+static void Install_clock(rtems_isr_entry clock_isr )
+{
+
+  Clock_driver_ticks = 0;
+  Clock_isrs = rtems_configuration_get_microseconds_per_tick() / 1000;
+
+  Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 );
+  lcsr->vector_base |= MASK_INT;   /* unmask VMEchip2 interrupts */
+  lcsr->to_ctl = 0xE7;             /* prescaler to 1 MHz (see Appendix A1) */
+  lcsr->timer_cmp_2 = MS_COUNT;
+  lcsr->timer_cnt_2 = 0;           /* clear counter */
+  lcsr->board_ctl |= 0x700;        /* increment, reset-on-compare, and */
+                                   /*   clear-overflow-cnt */
+
+  lcsr->intr_level[0] |= CLOCK_INT_LEVEL * 0x10;      /* set int level */
+  lcsr->intr_ena |= 0x02000000;       /* enable tick timer 2 interrupt */
+
+  atexit( Clock_exit );
+}
+
+void Clock_exit( void )
+{
+/* Dummy for now. See other m68k BSP's for code examples */
+}
+
+rtems_device_driver Clock_initialize(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void *pargp
+)
+{
+  Install_clock( Clock_isr );
+
+  return RTEMS_SUCCESSFUL;
+}