kernel: Break out kernel primitives into separate files and move to separate dir.

No code changed, just shuffling stuff around. This should make it easier to
build only select parts kernel and use different implementations.

Change-Id: Ie1f00f93008833ce38419d760afd70062c5e22b5

1 files changed, 67 insertions, 0 deletions

diff --git a/firmware/kernel/include/tick.h b/firmware/kernel/include/tick.h
new file mode 100644
index 0000000000..9810f4a1e5
--- /dev/null
+++ b/firmware/kernel/include/tick.h
@@ -0,0 +1,67 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Björn Stenberg
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef TICK_H
+#define TICK_H
+
+#include "config.h"
+#include "system.h" /* for NULL */
+extern void init_tick(void);
+
+#define HZ      100 /* number of ticks per second */
+
+#define MAX_NUM_TICK_TASKS 8
+
+/* global tick variable */
+#if defined(CPU_PP) && defined(BOOTLOADER) && \
+    !defined(HAVE_BOOTLOADER_USB_MODE)
+/* We don't enable interrupts in the PP bootloader unless USB mode is
+   enabled for it, so we need to fake the current_tick variable */
+#define current_tick (signed)(USEC_TIMER/10000)
+
+static inline void call_tick_tasks(void)
+{
+}
+#else
+extern volatile long current_tick;
+
+/* inline helper for implementing target interrupt handler */
+static inline void call_tick_tasks(void)
+{
+    extern void (*tick_funcs[MAX_NUM_TICK_TASKS+1])(void);
+    void (**p)(void) = tick_funcs;
+    void (*fn)(void);
+
+    current_tick++;
+
+    for(fn = *p; fn != NULL; fn = *(++p))
+    {
+        fn();
+    }
+}
+#endif
+
+/* implemented in target tree */
+extern void tick_start(unsigned int interval_in_ms) INIT_ATTR;
+
+extern int tick_add_task(void (*f)(void));
+extern int tick_remove_task(void (*f)(void));
+
+#endif /* TICK_H */