/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2006 Maxim Sobolev <sobomax@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.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, 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 DAMAGE.
 */

#ifndef _POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_
#define _POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_

#define NVRAM_SIZE              0x2000

#define CORE99_SIGNATURE        0x5a

#define SM_FLASH_CMD_ERASE_CONFIRM      0xd0
#define SM_FLASH_CMD_ERASE_SETUP        0x20
#define SM_FLASH_CMD_RESET              0xff
#define SM_FLASH_CMD_WRITE_SETUP        0x40
#define SM_FLASH_CMD_CLEAR_STATUS       0x50
#define SM_FLASH_CMD_READ_STATUS        0x70

#define SM_FLASH_STATUS_DONE    0x80
#define SM_FLASH_STATUS_ERR     0x38

#ifdef _KERNEL

struct powermac_nvram_softc {
        device_t                sc_dev;
        struct sx               sc_lock;
        phandle_t               sc_node;
        void *                  sc_bank;
        void *                  sc_bank0;
        void *                  sc_bank1;
        uint8_t                 sc_data[NVRAM_SIZE];

        struct cdev *           sc_cdev;
        int                     sc_type;
#define FLASH_TYPE_SM   0
#define FLASH_TYPE_AMD  1
        int                     sc_isopen;
        int                     sc_rpos;
        int                     sc_wpos;
};

#endif /* _KERNEL */

struct chrp_header {
        uint8_t                 signature;
        uint8_t                 chrp_checksum;
        uint16_t                length;
        char                    name[12];
};

struct core99_header {
        struct chrp_header      chrp_header;
        uint32_t                adler_checksum;
        uint32_t                generation;
        uint32_t                reserved[2];
};

#endif  /* _POWERPC_POWERMAC_POWERMAC_NVRAMVAR_H_ */