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/*-
* Copyright (c) 2015-2016 Landon Fuller <landonf@FreeBSD.org>
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*
* $FreeBSD$
*/
#ifndef _BHND_NVRAM_BHND_NVRAM_PARSER_H_
#define _BHND_NVRAM_BHND_NVRAM_PARSER_H_
#include <sys/param.h>
#include <sys/bus.h>
#include "bhnd_nvram_common.h"
union bhnd_nvram_ident;
struct bhnd_nvram_idx;
struct bhnd_nvram_ops;
struct bhnd_nvram_devpath;
struct bhnd_nvram;
LIST_HEAD(bhnd_nvram_devpaths, bhnd_nvram_devpath);
int bhnd_nvram_parser_identify(const union bhnd_nvram_ident *ident,
bhnd_nvram_format expected);
int bhnd_nvram_parser_init(struct bhnd_nvram *sc, device_t owner,
const void *data, size_t len, bhnd_nvram_format fmt);
void bhnd_nvram_parser_fini(struct bhnd_nvram *sc);
int bhnd_nvram_parser_getvar(struct bhnd_nvram *sc, const char *name,
void *buf, size_t *len, bhnd_nvram_type type);
int bhnd_nvram_parser_setvar(struct bhnd_nvram *sc, const char *name,
const void *buf, size_t len, bhnd_nvram_type type);
/** BCM NVRAM header */
struct bhnd_nvram_header {
uint32_t magic;
uint32_t size;
uint32_t cfg0; /**< crc:8, version:8, sdram_init:16 */
uint32_t cfg1; /**< sdram_config:16, sdram_refresh:16 */
uint32_t sdram_ncdl; /**< sdram_ncdl */
} __packed;
/**
* NVRAM format identification.
*
* To perform identification of the NVRAM format using bhnd_nvram_identify(),
* read `sizeof(bhnd_nvram_indent)` bytes from the head of the NVRAM data.
*/
union bhnd_nvram_ident {
struct bhnd_nvram_header bcm;
char btxt[4];
struct bhnd_tlv_ident {
uint8_t tag;
uint8_t size[2];
uint8_t flags;
} __packed tlv;
};
/** bhnd nvram parser instance state */
struct bhnd_nvram {
device_t dev; /**< parent device, or NULL */
const struct bhnd_nvram_ops *ops;
uint8_t *buf; /**< nvram data */
size_t buf_size;
size_t num_buf_vars; /**< number of records in @p buf (0 if not yet calculated) */
struct bhnd_nvram_idx *idx; /**< key index */
struct bhnd_nvram_devpaths devpaths; /**< device paths */
struct bhnd_nvram_varmap defaults; /**< default values */
struct bhnd_nvram_varmap pending; /**< uncommitted writes */
};
#endif /* _BHND_NVRAM_BHND_NVRAM_PARSER_H_ */
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