usr/src/cmd/boot/installgrub/installgrub.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright 2016 Nexenta Systems, Inc. All rights reserved.
  24  */
  25
  26 #ifndef _INSTALLGRUB_H
  27 #define _INSTALLGRUB_H
  28
  29 #ifdef  __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 #include <sys/multiboot.h>
  34 #include "./../common/bblk_einfo.h"
  35
  36 #define SECTOR_SIZE     (512)
  37
  38 typedef struct _device_data {
  39         char            *path;
  40         char            *path_p0;
  41         uint8_t         type;
  42         int             part_fd;
  43         int             disk_fd;
  44         int             slice;
  45         int             partition;
  46         uint64_t        start_sector;
  47         char            boot_sector[SECTOR_SIZE];
  48 } ig_device_t;
  49
  50 typedef struct _stage2_data {
  51         char                    *buf;
  52         char                    *file;
  53         char                    *extra;
  54         multiboot_header_t      *mboot;
  55         uint32_t                mboot_off;
  56         uint32_t                file_size;
  57         uint32_t                extra_size;
  58         uint32_t                buf_size;
  59         uint32_t                first_sector;
  60         uint32_t                pcfs_first_sectors[2];
  61 } ig_stage2_t;
  62
  63 typedef struct _ig_data {
  64         char            stage1_buf[SECTOR_SIZE];
  65         ig_stage2_t     stage2;
  66         ig_device_t     device;
  67 } ig_data_t;
  68
  69 enum ig_devtype_t {
  70         IG_DEV_X86BOOTPAR = 1,
  71         IG_DEV_SOLVTOC,
  72         IG_DEV_EFI
  73 };
  74
  75 #define is_bootpar(type)        (type == IG_DEV_X86BOOTPAR)
  76 #define is_efi(type)            (type == IG_DEV_EFI)
  77
  78 #define STAGE2_MEMADDR          (0x8000)        /* loading addr of stage2 */
  79
  80 #define STAGE1_BPB_OFFSET       (0x3)
  81 #define STAGE1_BPB_SIZE         (0x3B)
  82 #define STAGE1_BOOT_DRIVE       (0x40)
  83 #define STAGE1_FORCE_LBA        (0x41)
  84 #define STAGE1_STAGE2_ADDRESS   (0x42)
  85 #define STAGE1_STAGE2_SECTOR    (0x44)
  86 #define STAGE1_STAGE2_SEGMENT   (0x48)
  87
  88 #define STAGE2_BLOCKLIST        (SECTOR_SIZE - 0x8)
  89 #define STAGE2_INSTALLPART      (SECTOR_SIZE + 0x8)
  90 #define STAGE2_FORCE_LBA        (SECTOR_SIZE + 0x11)
  91 #define STAGE2_BLKOFF(type)     \
  92         (is_efi(type) ? 1024 : 50)      /* offset from start of part */
  93
  94 /*
  95  * Maximum size of stage2 on EFI-labeled disks. Must not be larger than
  96  * VDEV_BOOT_SIZE, defined in usr/src/uts/common/fs/zfs/sys/vdev_impl.h
  97  */
  98 #define STAGE2_MAXSIZE          (1ULL << 19)
  99
 100 #ifdef  __cplusplus
 101 }
 102 #endif
 103
 104 #endif /* _INSTALLGRUB_H */