/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2016 Nexenta Systems, Inc. All rights reserved.
 */

#ifndef _INSTALLGRUB_H
#define _INSTALLGRUB_H

#ifdef  __cplusplus
extern "C" {
#endif

#include <sys/multiboot.h>
#include "./../common/bblk_einfo.h"

#define SECTOR_SIZE     (512)

typedef struct _device_data {
        char            *path;
        char            *path_p0;
        uint8_t         type;
        int             part_fd;
        int             disk_fd;
        int             slice;
        int             partition;
        uint64_t        start_sector;
        char            boot_sector[SECTOR_SIZE];
} ig_device_t;

typedef struct _stage2_data {
        char                    *buf;
        char                    *file;
        char                    *extra;
        multiboot_header_t      *mboot;
        uint32_t                mboot_off;
        uint32_t                file_size;
        uint32_t                extra_size;
        uint32_t                buf_size;
        uint32_t                first_sector;
        uint32_t                pcfs_first_sectors[2];
} ig_stage2_t;

typedef struct _ig_data {
        char            stage1_buf[SECTOR_SIZE];
        ig_stage2_t     stage2;
        ig_device_t     device;
} ig_data_t;

enum ig_devtype_t {
        IG_DEV_X86BOOTPAR = 1,
        IG_DEV_SOLVTOC,
        IG_DEV_EFI
};

#define is_bootpar(type)        (type == IG_DEV_X86BOOTPAR)
#define is_efi(type)            (type == IG_DEV_EFI)

#define STAGE2_MEMADDR          (0x8000)        /* loading addr of stage2 */

#define STAGE1_BPB_OFFSET       (0x3)
#define STAGE1_BPB_SIZE         (0x3B)
#define STAGE1_BOOT_DRIVE       (0x40)
#define STAGE1_FORCE_LBA        (0x41)
#define STAGE1_STAGE2_ADDRESS   (0x42)
#define STAGE1_STAGE2_SECTOR    (0x44)
#define STAGE1_STAGE2_SEGMENT   (0x48)

#define STAGE2_BLOCKLIST        (SECTOR_SIZE - 0x8)
#define STAGE2_INSTALLPART      (SECTOR_SIZE + 0x8)
#define STAGE2_FORCE_LBA        (SECTOR_SIZE + 0x11)
#define STAGE2_BLKOFF(type)     \
        (is_efi(type) ? 1024 : 50)      /* offset from start of part */

/*
 * Maximum size of stage2 on EFI-labeled disks. Must not be larger than
 * VDEV_BOOT_SIZE, defined in usr/src/uts/common/fs/zfs/sys/vdev_impl.h
 */
#define STAGE2_MAXSIZE          (1ULL << 19)

#ifdef  __cplusplus
}
#endif

#endif /* _INSTALLGRUB_H */