xref: /onnv-gate/usr/src/uts/sun4/sys/eeprom.h (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright (c) 1991-1998 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate  * All rights reserved.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate #ifndef _SYS_EEPROM_H
28*0Sstevel@tonic-gate #define	_SYS_EEPROM_H
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
31*0Sstevel@tonic-gate 
32*0Sstevel@tonic-gate #ifdef	__cplusplus
33*0Sstevel@tonic-gate extern "C" {
34*0Sstevel@tonic-gate #endif
35*0Sstevel@tonic-gate 
36*0Sstevel@tonic-gate /*
37*0Sstevel@tonic-gate  * The EEPROM is part of the Mostek MK48T02 clock chip. The EEPROM
38*0Sstevel@tonic-gate  * is 2K, but the last 8 bytes are used as the clock, and the 32 bytes
39*0Sstevel@tonic-gate  * before that emulate the ID prom. There is no
40*0Sstevel@tonic-gate  * recovery time necessary after writes to the chip.
41*0Sstevel@tonic-gate  */
42*0Sstevel@tonic-gate #ifndef _ASM
43*0Sstevel@tonic-gate #include <sys/types.h>
44*0Sstevel@tonic-gate struct ee_soft {
45*0Sstevel@tonic-gate 	ushort_t ees_wrcnt[3];		/* write count (3 copies) */
46*0Sstevel@tonic-gate 	ushort_t ees_nu1;		/* not used */
47*0Sstevel@tonic-gate 	uchar_t	ees_chksum[3];		/* software area checksum (3 copies) */
48*0Sstevel@tonic-gate 	uchar_t	ees_nu2;		/* not used */
49*0Sstevel@tonic-gate 	uchar_t	ees_resv[0xd8-0xc];	/* XXX - figure this out sometime */
50*0Sstevel@tonic-gate };
51*0Sstevel@tonic-gate 
52*0Sstevel@tonic-gate extern caddr_t v_eeprom_addr;
53*0Sstevel@tonic-gate #define	EEPROM		((struct eeprom *)v_eeprom_addr)
54*0Sstevel@tonic-gate #define	IDPROM_ADDR	(v_eeprom_addr+EEPROM_SIZE) /* virt addr of idprom */
55*0Sstevel@tonic-gate #endif /* !_ASM */
56*0Sstevel@tonic-gate 
57*0Sstevel@tonic-gate #define	EEPROM_SIZE	0x1fd8		/* size of eeprom in bytes */
58*0Sstevel@tonic-gate 
59*0Sstevel@tonic-gate /*
60*0Sstevel@tonic-gate  * ID prom constants. They are included here because the ID prom is
61*0Sstevel@tonic-gate  * emulated by stealing 20 bytes of the eeprom.
62*0Sstevel@tonic-gate  */
63*0Sstevel@tonic-gate #define	IDPROMSIZE	0x20			/* size of ID prom, in bytes */
64*0Sstevel@tonic-gate 
65*0Sstevel@tonic-gate #ifdef	__cplusplus
66*0Sstevel@tonic-gate }
67*0Sstevel@tonic-gate #endif
68*0Sstevel@tonic-gate 
69*0Sstevel@tonic-gate #endif	/* _SYS_EEPROM_H */
70