boot/installgrub/installgrub.h

/*
 * 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 */