Alan's ATA code, or what's left of it after I have laid my grubby little hands

on it. :-) It compiles, but it probably doesn't work...
Also, a stub for future kernel code. A sleep() and a dummy yield(), just so we
can start to use them in other code.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@163 a1c6a512-1295-4272-9138-f99709370657

firmware/kernel.h

@@ -0,0 +1,36 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Björn Stenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef _KERNEL_H_
+#define _KERNEL_H_
+
+/* wrap-safe macros for tick comparison */
+#define TIME_AFTER(a,b)         ((long)(b) - (long)(a) < 0)
+#define TIME_BEFORE(a,b)        TIME_AFTER(b,a)
+
+#define HZ      100 /* number of ticks per second */
+
+/* global tick variable */
+extern long current_tick;
+
+/* kernel functions */
+extern void yield(void);
+extern void sleep(int ticks);
+
+
+#endif