powermac_nvramvar.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 * $FreeBSD: stable/11/sys/dev/powermac_nvram/powermac_nvramvar.h 330897 2018-03-14 03:19:51Z eadler $
29 */
30
31#ifndef	_POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_
32#define	_POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_
33
34#define	NVRAM_SIZE		0x2000
35
36#define	CORE99_SIGNATURE	0x5a
37
38#define SM_FLASH_CMD_ERASE_CONFIRM	0xd0
39#define SM_FLASH_CMD_ERASE_SETUP	0x20
40#define SM_FLASH_CMD_RESET		0xff
41#define SM_FLASH_CMD_WRITE_SETUP	0x40
42#define SM_FLASH_CMD_CLEAR_STATUS	0x50
43#define SM_FLASH_CMD_READ_STATUS	0x70
44
45#define SM_FLASH_STATUS_DONE	0x80
46#define SM_FLASH_STATUS_ERR	0x38
47
48#ifdef _KERNEL
49
50struct powermac_nvram_softc {
51	device_t		sc_dev;
52	phandle_t		sc_node;
53	vm_offset_t		sc_bank;
54	vm_offset_t		sc_bank0;
55	vm_offset_t		sc_bank1;
56	uint8_t			sc_data[NVRAM_SIZE];
57
58	struct cdev *		sc_cdev;
59	int			sc_type;
60#define FLASH_TYPE_SM	0
61#define FLASH_TYPE_AMD	1
62	int			sc_isopen;
63	int			sc_rpos;
64	int			sc_wpos;
65};
66
67#endif /* _KERNEL */
68
69struct chrp_header {
70	uint8_t			signature;
71	uint8_t			chrp_checksum;
72	uint16_t		length;
73	char			name[12];
74};
75
76struct core99_header {
77	struct chrp_header	chrp_header;
78	uint32_t		adler_checksum;
79	uint32_t		generation;
80	uint32_t		reserved[2];
81};
82
83#endif  /* _POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_ */
84