/*
* Copyright (c) 2003 Ilpo Ruotsalainen
* All rights reserved.
*
* 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 ``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 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.
*
* <<Id: LICENSE_GC,v 1.1 2001/10/01 23:24:05 cgd Exp>>
*/
/*
* The GIO Product Identification Word is the first word (1 or 4 bytes)
* in each GIO device's address space. It is the same format for GIO32,
* GIO32-bis, and GIO64 devices. The macros below extract the following
* fields:
*
* Bits:
* 0-6 Product ID Code
* 7 Product Identification Word size (0: 8 bits, 1: 32 bits)
* 8-15 Product Revision
* 16 GIO Interface Size (0: 32, 1: 64; NB: GIO64 devices may be 32)
* 17 Rom Present (1: present)
* 18-31 Manufacturer-specific Code
*
* The upper three bytes containing the Product Revision, GIO Interface
* Size, Rom Presence indicator, and Manufacturer-specific Code are only
* valid if bit 7 is set in the Product ID Word. If it is not set, all
* values default to 0.
*
* If the Rom Present bit is set, the three words after the Product ID are
* reserved for three ROM registers:
* Board Serial Number Register (base_address + 0x4)
* ROM Index Register (base_address + 0x8)
* ROM Read Register (base_address + 0xc)
*
* The ROM Index Register is initialised by the CPU to 0 and incremented by
* 4 on each read from the ROM Read Register. The Board Serial Number
* Register contains a manufacturer-specific serial number.
*/
