From c7de829c796978e519984df2f1c8cfcf921a39a4 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Tue, 19 Nov 2002 11:04:11 +0000
Subject: * Patch by Thomas Frieden, 13 Nov 2002:   Add code for AmigaOne board
   (preliminary merge to U-Boot, still WIP)

* Patch by Jon Diekema, 12 Nov 2002:
  - Adding URL for IEEE OUI lookup
  - Making the autoboot #defines dependent on CONFIG_AUTOBOOT_KEYED
    being defined.
  - In the CONFIG_EXTRA_ENV_SETTINGS #define, the root-on-initrd and
    root-on-nfs macros are designed to switch how the default boot
    method gets defined.
---
 .../MAI/bios_emulator/scitech/src/pm/dos/ztimer.c  | 111 +++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 board/MAI/bios_emulator/scitech/src/pm/dos/ztimer.c

(limited to 'board/MAI/bios_emulator/scitech/src/pm/dos/ztimer.c')

diff --git a/board/MAI/bios_emulator/scitech/src/pm/dos/ztimer.c b/board/MAI/bios_emulator/scitech/src/pm/dos/ztimer.c
new file mode 100644
index 0000000000..960ed06cd7
--- /dev/null
+++ b/board/MAI/bios_emulator/scitech/src/pm/dos/ztimer.c
@@ -0,0 +1,111 @@
+/****************************************************************************
+*
+*                         Ultra Long Period Timer
+*
+*  ========================================================================
+*
+*    The contents of this file are subject to the SciTech MGL Public
+*    License Version 1.0 (the "License"); you may not use this file
+*    except in compliance with the License. You may obtain a copy of
+*    the License at http://www.scitechsoft.com/mgl-license.txt
+*
+*    Software distributed under the License is distributed on an
+*    "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+*    implied. See the License for the specific language governing
+*    rights and limitations under the License.
+*
+*    The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
+*
+*    The Initial Developer of the Original Code is SciTech Software, Inc.
+*    All Rights Reserved.
+*
+*  ========================================================================
+*
+* Language:     ANSI C
+* Environment:  MSDOS
+*
+* Description:  OS specific implementation for the Zen Timer functions.
+*
+****************************************************************************/
+
+
+/*---------------------------- Global variables ---------------------------*/
+
+uchar * _VARAPI _ZTimerBIOSPtr;
+
+/*----------------------------- Implementation ----------------------------*/
+
+/* External assembler functions */
+
+void    _ASMAPI LZ_timerOn(void);
+ulong   _ASMAPI LZ_timerLap(void);
+void    _ASMAPI LZ_timerOff(void);
+ulong   _ASMAPI LZ_timerCount(void);
+void    _ASMAPI LZ_disable(void);
+void    _ASMAPI LZ_enable(void);
+
+/****************************************************************************
+REMARKS:
+Initialise the Zen Timer module internals.
+****************************************************************************/
+void __ZTimerInit(void)
+{
+    _ZTimerBIOSPtr = PM_getBIOSPointer();
+}
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerOn(tm)     LZ_timerOn()
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerLap(tm)        LZ_timerLap()
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerOff(tm)        LZ_timerOff()
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerCount(tm)  LZ_timerCount()
+
+/****************************************************************************
+REMARKS:
+Define the resolution of the long period timer as microseconds per timer tick.
+****************************************************************************/
+#define ULZTIMER_RESOLUTION     54925
+
+/****************************************************************************
+REMARKS:
+Read the Long Period timer value from the BIOS timer tick.
+****************************************************************************/
+static ulong __ULZReadTime(void)
+{
+    ulong   ticks;
+    LZ_disable();            /* Turn of interrupts               */
+    ticks = PM_getLong(_ZTimerBIOSPtr+0x6C);
+    LZ_enable();             /* Turn on interrupts again         */
+    return ticks;
+}
+
+/****************************************************************************
+REMARKS:
+Compute the elapsed time from the BIOS timer tick. Note that we check to see
+whether a midnight boundary has passed, and if so adjust the finish time to
+account for this. We cannot detect if more that one midnight boundary has
+passed, so if this happens we will be generating erronous results.
+****************************************************************************/
+ulong __ULZElapsedTime(ulong start,ulong finish)
+{
+    if (finish < start)
+        finish += 1573040L;         /* Number of ticks in 24 hours      */
+    return finish - start;
+}
-- 
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