1/*-
 2 * SPDX-License-Identifier: BSD-2-Clause
 3 *
 4 * Copyright (c) 2006 Maxim Sobolev <sobomax@FreeBSD.org>
 5 * All rights reserved.
 6 *
 7 * Redistribution and use in source and binary forms, with or without
 8 * modification, are permitted provided that the following conditions
 9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef	_POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_
30#define	_POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_
31
32#define	NVRAM_SIZE		0x2000
33
34#define	CORE99_SIGNATURE	0x5a
35
36#define SM_FLASH_CMD_ERASE_CONFIRM	0xd0
37#define SM_FLASH_CMD_ERASE_SETUP	0x20
38#define SM_FLASH_CMD_RESET		0xff
39#define SM_FLASH_CMD_WRITE_SETUP	0x40
40#define SM_FLASH_CMD_CLEAR_STATUS	0x50
41#define SM_FLASH_CMD_READ_STATUS	0x70
42
43#define SM_FLASH_STATUS_DONE	0x80
44#define SM_FLASH_STATUS_ERR	0x38
45
46#ifdef _KERNEL
47
48struct powermac_nvram_softc {
49	device_t		sc_dev;
50	struct sx		sc_lock;
51	phandle_t		sc_node;
52	void *			sc_bank;
53	void *			sc_bank0;
54	void *			sc_bank1;
55	uint8_t			sc_data[NVRAM_SIZE];
56
57	struct cdev *		sc_cdev;
58	int			sc_type;
59#define FLASH_TYPE_SM	0
60#define FLASH_TYPE_AMD	1
61	int			sc_isopen;
62	int			sc_rpos;
63	int			sc_wpos;
64};
65
66#endif /* _KERNEL */
67
68struct chrp_header {
69	uint8_t			signature;
70	uint8_t			chrp_checksum;
71	uint16_t		length;
72	char			name[12];
73};
74
75struct core99_header {
76	struct chrp_header	chrp_header;
77	uint32_t		adler_checksum;
78	uint32_t		generation;
79	uint32_t		reserved[2];
80};
81
82#endif  /* _POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_ */