1/*- 2 * Copyright (c) 2010 Aleksandr Rybalko. 3 * Copyright (c) 2016 Michael Zhilin. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 31#ifndef NVRAM2ENV_NVRAM2ENV_H_ 32#define NVRAM2ENV_NVRAM2ENV_H_ 33 34#define nvram2env_read_1(sc, reg) \ 35 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh,(reg)) 36 37#define nvram2env_read_2(sc, reg) \ 38 bus_space_read_2((sc)->sc_bt, (sc)->sc_bh,(reg)) 39 40#define nvram2env_read_4(sc, reg) \ 41 bus_space_read_4((sc)->sc_bt, (sc)->sc_bh,(reg)) 42 43#define nvram2env_write_1(sc, reg, val) \ 44 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, \ 45 (reg), (val)) 46 47#define nvram2env_write_2(sc, reg, val) \ 48 bus_space_write_2((sc)->sc_bt, (sc)->sc_bh, \ 49 (reg), (val)) 50 51#define nvram2env_write_4(sc, reg, val) \ 52 bus_space_write_4((sc)->sc_bt, (sc)->sc_bh, \ 53 (reg), (val)) 54 55struct nvram2env_softc { 56 bus_space_tag_t bst; 57 bus_space_handle_t bsh; 58 bus_addr_t addr; 59 int need_swap; 60 uint32_t sig; 61 uint32_t flags; 62#define NVRAM_FLAGS_NOCHECK 0x0001 /* Do not check(CRC or somthing else)*/ 63#define NVRAM_FLAGS_GENERIC 0x0002 /* Format Generic, skip 4b and read */ 64#define NVRAM_FLAGS_BROADCOM 0x0004 /* Format Broadcom, use struct nvram */ 65#define NVRAM_FLAGS_UBOOT 0x0008 /* Format Generic, skip 4b of CRC and read */ 66 uint32_t maxsize; 67 uint32_t crc; 68}; 69 70#define NVRAM_MAX_SIZE 0x10000 71#define CFE_NVRAM_SIGNATURE 0x48534c46 72 73struct nvram { 74 u_int32_t sig; 75 u_int32_t size; 76 u_int32_t unknown1; 77 u_int32_t unknown2; 78 u_int32_t unknown3; 79 char data[]; 80}; 81 82int nvram2env_attach(device_t); 83int nvram2env_probe(device_t); 84 85extern devclass_t nvram2env_devclass; 86extern driver_t nvram2env_driver; 87 88#endif /* SYS_DEV_NVRAM2ENV_NVRAM2ENV_H_ */ 89