1 /* 2 * GRUB -- GRand Unified Bootloader 3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 */ 19 /* 20 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 21 * Use is subject to license terms. 22 */ 23 24 #ifndef _SYS_VDEV_IMPL_H 25 #define _SYS_VDEV_IMPL_H 26 27 #define VDEV_SKIP_SIZE (16 << 10) 28 #define VDEV_PHYS_SIZE (112 << 10) 29 #define VDEV_UBERBLOCK_RING (128 << 10) 30 31 typedef struct vdev_phys { 32 char vp_nvlist[VDEV_PHYS_SIZE - sizeof (zio_block_tail_t)]; 33 zio_block_tail_t vp_zbt; 34 } vdev_phys_t; 35 36 typedef struct vdev_label { 37 char vl_pad[VDEV_SKIP_SIZE]; /* 16K */ 38 vdev_phys_t vl_vdev_phys; /* 112K */ 39 char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */ 40 } vdev_label_t; /* 256K total */ 41 42 /* 43 * Size and offset of embedded boot loader region on each label. 44 * The total size of the first two labels plus the boot area is 4MB. 45 */ 46 #define VDEV_BOOT_OFFSET (2 * sizeof (vdev_label_t)) 47 #define VDEV_BOOT_SIZE (7ULL << 19) /* 3.5M */ 48 49 /* 50 * Size of label regions at the start and end of each leaf device. 51 */ 52 #define VDEV_LABEL_START_SIZE (2 * sizeof (vdev_label_t) + VDEV_BOOT_SIZE) 53 #define VDEV_LABEL_END_SIZE (2 * sizeof (vdev_label_t)) 54 #define VDEV_LABELS 4 55 56 #endif /* _SYS_VDEV_IMPL_H */ 57