1 files changed, 219 insertions, 0 deletions
diff --git a/bsps/mips/hurricane/clock/ckinit.c b/bsps/mips/hurricane/clock/ckinit.c
new file mode 100644
index 0000000000..c0d2a38269
--- /dev/null
+++ b/bsps/mips/hurricane/clock/ckinit.c
@@ -0,0 +1,219 @@
+/**
+ *  @file
+ *  
+ *  This file contains the clock driver initialization for the Hurricane BSP.
+ */
+
+/*
+ *  Author:     Craig Lebakken <craigl@transition.com>
+ *
+ *  COPYRIGHT (c) 1996 by Transition Networks Inc.
+ *
+ *  To anyone who acknowledges that this file is provided "AS IS"
+ *  without any express or implied warranty:
+ *      permission to use, copy, modify, and distribute this file
+ *      for any purpose is hereby granted without fee, provided that
+ *      the above copyright notice and this notice appears in all
+ *      copies, and that the name of Transition Networks not be used in
+ *      advertising or publicity pertaining to distribution of the
+ *      software without specific, written prior permission.
+ *      Transition Networks makes no representations about the suitability
+ *      of this software for any purpose.
+ *
+ *  Derived from c/src/lib/libbsp/no_cpu/no_bsp/clock/ckinit.c
+ *
+ *  COPYRIGHT (c) 1989-2012.
+ *  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.
+ */
+
+/*
+ *  Rather than deleting this, it is commented out to (hopefully) help
+ *  the submitter send updates.
+ *
+ *  static char _sccsid[] = "@(#)ckinit.c 08/20/96     1.3\n";
+ */
+
+
+#include <stdlib.h>
+
+#include <rtems.h>
+#include <bsp.h>
+#include <bsp/irq.h>
+#include <rtems/clockdrv.h>
+
+extern uint32_t bsp_clicks_per_microsecond;
+
+#define EXT_INT1    0x800  /* external interrupt 5 */
+
+#include "clock.h"
+
+rtems_isr USC_isr(void *unused);
+
+void reset_wdt(void);
+void enable_wdi(void);
+void init_hbt(void);
+void enable_hbi(void);
+void disable_hbi(void);
+
+void Clock_exit(void);
+rtems_isr Clock_isr(rtems_vector_number vector);
+rtems_isr User_Clock_isr(rtems_vector_number vector);
+void Install_clock(rtems_isr_entry clock_isr);
+
+
+/*
+ *  The interrupt vector number associated with the clock tick device
+ *  driver.
+ */
+
+#define CLOCK_VECTOR_MASK    EXT_INT1
+#define CLOCK_VECTOR         MIPS_INTERRUPT_BASE + 0x3
+
+/*
+ *  Clock_driver_ticks is a monotonically increasing counter of the
+ *  number of clock ticks since the driver was initialized.
+ */
+
+volatile uint32_t Clock_driver_ticks;
+
+/*
+ *  Clock_isrs is the number of clock ISRs until the next invocation of
+ *  the RTEMS clock tick routine.  The clock tick device driver
+ *  gets an interrupt once a millisecond and counts down until the
+ *  length of time between the user configured microseconds per tick
+ *  has passed.
+ */
+
+uint32_t Clock_isrs;              /* ISRs until next tick */
+
+/*
+ *  The previous ISR on this clock tick interrupt vector.
+ */
+
+rtems_isr_entry  Old_ticker;
+
+void Clock_exit( void );
+
+static uint32_t mips_timer_rate = 0;
+
+/*
+ *  Isr Handler
+ */
+
+rtems_isr Clock_isr(
+  rtems_vector_number vector
+)
+{
+/*
+ * bump the number of clock driver ticks since initialization
+ *
+ * determine if it is time to announce the passing of tick as configured
+ * to RTEMS through the rtems_clock_tick directive
+ *
+ * perform any timer dependent tasks
+ */
+
+  reset_wdt();    /* Reset hardware watchdog timer */
+
+  Clock_driver_ticks += 1;
+
+  rtems_clock_tick();
+}
+
+/* User callback shell (set from Clock_Control) */
+static void (*user_callback)(void);
+
+rtems_isr User_Clock_isr(
+  rtems_vector_number vector
+)
+{
+   if (user_callback)
+      user_callback();
+}
+
+/*
+ *  Install_clock
+ *
+ *  Install a clock tick handleR and reprograms the chip.  This
+ *  is used to initially establish the clock tick.
+ */
+
+void Install_clock(
+  rtems_isr_entry clock_isr
+)
+{
+  /*
+  *  Initialize the clock tick device driver variables
+  */
+
+  Clock_driver_ticks = 0;
+  Clock_isrs = rtems_configuration_get_milliseconds_per_tick();
+
+  mips_timer_rate = rtems_configuration_get_microseconds_per_tick() *
+           bsp_clicks_per_microsecond;
+
+  /*
+  *  Hardware specific initialize goes here
+  */
+
+  /* Set up USC heartbeat timer to generate interrupts */
+  disable_hbi();      /* Disable heartbeat interrupt in USC */
+
+  /* Install interrupt handler */
+  rtems_interrupt_handler_install( 
+    CLOCK_VECTOR,
+    "clock",
+    0,
+    USC_isr,
+    NULL
+  );
+
+  init_hbt();        /* Initialize heartbeat timer */
+
+  reset_wdt();      /* Reset watchdog timer */
+
+  enable_wdi();      /* Enable watchdog interrupt in USC */
+
+  enable_hbi();      /* Enable heartbeat interrupt in USC */
+
+              /* Enable USC interrupt in MIPS processor */
+  mips_enable_in_interrupt_mask(CLOCK_VECTOR_MASK);
+
+  /*
+  *  Schedule the clock cleanup routine to execute if the application exits.
+  */
+
+  atexit( Clock_exit );
+}
+
+/*
+ *  Clean up before the application exits
+ */
+
+void Clock_exit( void )
+{
+  /* mips: turn off the timer interrupts */
+  mips_disable_in_interrupt_mask(~CLOCK_VECTOR_MASK);
+}
+
+/*
+ *  Clock_initialize
+ *
+ *  Device driver entry point for clock tick driver initialization.
+ */
+
+rtems_device_driver Clock_initialize(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void *pargp
+)
+{
+  Install_clock( Clock_isr );
+
+  return RTEMS_SUCCESSFUL;
+}
+