1 /*- 2 * Copyright (c) 2015-2016 Landon Fuller <landonf@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 */ 29 30 #ifndef _BHND_NVRAM_BHND_NVRAM_BCMVAR_H_ 31 #define _BHND_NVRAM_BHND_NVRAM_BCMVAR_H_ 32 33 #define BCM_NVRAM_ENCODE_OPT_VERSION "bcm_version" 34 35 /** 36 * BCM NVRAM header value data. 37 */ 38 union bhnd_nvram_bcm_hvar_value { 39 uint16_t u16; 40 uint32_t u32; 41 }; 42 43 /** 44 * Internal representation of BCM NVRAM values that mirror (and must be 45 * vended as) NVRAM variables. 46 */ 47 struct bhnd_nvram_bcm_hvar { 48 const char *name; /**< variable name */ 49 bhnd_nvram_type type; /**< value type */ 50 size_t nelem; /**< value element count */ 51 size_t len; /**< value length */ 52 const char *envp; /**< Pointer to the NVRAM variable mirroring 53 this header value, or NULL. */ 54 bool stale; /**< header value does not match 55 mirrored NVRAM value */ 56 57 /** variable data */ 58 union bhnd_nvram_bcm_hvar_value value; 59 }; 60 61 /** BCM NVRAM header */ 62 struct bhnd_nvram_bcmhdr { 63 uint32_t magic; 64 uint32_t size; 65 uint32_t cfg0; /**< crc:8, version:8, sdram_init:16 */ 66 uint32_t cfg1; /**< sdram_config:16, sdram_refresh:16 */ 67 uint32_t sdram_ncdl; /**< sdram_ncdl */ 68 } __packed; 69 70 int bhnd_nvram_bcm_getvar_direct_common(struct bhnd_nvram_io *io, 71 const char *name, void *outp, size_t *olen, bhnd_nvram_type otype, 72 bool have_header); 73 74 #endif /* _BHND_NVRAM_BHND_NVRAM_BCMVAR_H_ */ 75