freebsd-nq/sys/sparc64/include/eeprom.h
Marius Strobl 2d86abb059 o Sync with the NetBSD mk48txx driver (the result simplyfies some changes
I have in mind for the genclock interface):
  - Recognize the MK48T18 as well (differs from the MK48T08 only in
    packaging options and voltages).
  - Allow MD code to provide functions for reading/writing NVRAM/RTC
    locations.
    If passed NULL, the old behaviour using bus_space_{read,write}_1() is
    used. Otherwise, all access to the chip goes via the MD functions.
    This is necessary for mvmeppc boards where the mk48txx NVRAM/RTC is
    not directly addressable.
  - Cleanup MI mk48txx(4) todclock driver:
    - Prepare mk48txxvar.h and leave only register definitions in
      mk48txxreg.h.
    - Define struct mk48txx_softc as usual devices and allocate necessary
      members in it.
    - Change mk48txx_attach() to only take a device_t.
o While converting the sparc64 eeprom driver to the above changes:
  - Remove some dead code and stale comments.
  - Use the NVRAM size provided by the mk48txx driver instead of hardcoding
    it as suggested by a comment.
  - Add a comment about why it doesn't make much sense to read the hostid
    directly from the NVRAM except for displaying it when attaching.
  - Don't print the hostid if it reads all zero because it's stored
    elsewhere.
2004-11-17 12:54:12 +00:00

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2.7 KiB
C

/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1994 Gordon W. Ross
* Copyright (c) 1993 Adam Glass
* Copyright (c) 1996 Paul Kranenburg
* Copyright (c) 1996
* The President and Fellows of Harvard College. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Harvard University.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* This product includes software developed by Harvard University.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* from: @(#)clock.c 8.1 (Berkeley) 6/11/93
* from: NetBSD: clock.c,v 1.41 2001/07/24 19:29:25 eeh Exp
*
* $FreeBSD$
*/
#ifndef _MACHINE_EEPROM_H_
#define _MACHINE_EEPROM_H_
extern devclass_t eeprom_devclass;
int eeprom_probe(device_t);
int eeprom_attach(device_t);
#endif /* _MACHINE_EEPROM_H_ */