-/*
- * This file is part of the libpayload project.
- *
- * Copyright (C) 2008 Uwe Hermann <uwe@hermann-uwe.de>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * Datasheet:
- * - Name: MC146818: Real-time Clock Plus RAM (RTC)
- * - PDF: http://www.freescale.com/files/microcontrollers/doc/data_sheet/MC146818.pdf
- * - Order number: MC146818/D
- */
-
-/*
- * See also:
- * http://bochs.sourceforge.net/techspec/CMOS-reference.txt
- * http://www.bioscentral.com/misc/cmosmap.htm
- */
-
-#include <libpayload.h>
-
-#define RTC_PORT 0x70
-
-/**
- * Read a byte from the specified NVRAM address.
- *
- * @param addr The NVRAM address to read a byte from.
- * @return The byte at the given NVRAM address.
- */
-u8 nvram_read(u8 addr)
-{
- outb(addr, RTC_PORT);
- return inb(RTC_PORT + 1);
-}
-
-/**
- * Write a byte to the specified NVRAM address.
- *
- * @param val The byte to write to NVRAM.
- * @param addr The NVRAM address to write to.
- */
-void nvram_write(u8 val, u8 addr)
-{
- outb(addr, RTC_PORT);
- outb(val, RTC_PORT + 1);
-}