From 7632906fc290b652416ab59eb5fb49356c064ed6 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Thu, 19 Apr 2018 06:35:52 +0200
Subject: bsps: Move clock drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.
---
 bsps/no_cpu/no_bsp/clock/ckinit.c | 127 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 bsps/no_cpu/no_bsp/clock/ckinit.c

(limited to 'bsps/no_cpu/no_bsp/clock/ckinit.c')

diff --git a/bsps/no_cpu/no_bsp/clock/ckinit.c b/bsps/no_cpu/no_bsp/clock/ckinit.c
new file mode 100644
index 0000000000..eb0867a895
--- /dev/null
+++ b/bsps/no_cpu/no_bsp/clock/ckinit.c
@@ -0,0 +1,127 @@
+/*
+ *  This file provides a template for the clock device driver initialization.
+ *
+ *  If possible, please use the dev/clock/clockimpl.h method for instantiating
+ *  a clock driver.
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-2014.
+ *  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.
+ */
+
+#include <stdlib.h>
+
+#include <rtems.h>
+#include <bsp.h>
+
+void Clock_exit( void );
+rtems_isr Clock_isr( rtems_vector_number vector );
+
+/*
+ *  The interrupt vector number associated with the clock tick device
+ *  driver.
+ */
+#define CLOCK_VECTOR    4
+
+/*
+ *  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 );
+
+/*
+ *  Isr Handler
+ */
+static 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
+   */
+}
+
+/*
+ *  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_microseconds_per_tick() / 1000;
+
+  Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 );
+  /*
+   *  Hardware specific initialize goes here
+   */
+
+  /* XXX */
+
+  /*
+   *  Schedule the clock cleanup routine to execute if the application exits.
+   */
+
+  atexit( Clock_exit );
+}
+
+/*
+ *  Clean up before the application exits
+ */
+
+void Clock_exit( void )
+{
+  /* XXX: turn off the timer interrupts */
+
+  /* XXX: If necessary, restore the old vector */
+}
+
+/*
+ *  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;
+}
+
-- 
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