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_PAD_SIZE (8 << 10) 28 /* 2 padding areas (vl_pad1 and vl_pad2) to skip */ 29 #define VDEV_SKIP_SIZE VDEV_PAD_SIZE * 2 30 #define VDEV_PHYS_SIZE (112 << 10) 31 #define VDEV_UBERBLOCK_RING (128 << 10) 32 33 typedef struct vdev_phys { 34 char vp_nvlist[VDEV_PHYS_SIZE - sizeof (zio_block_tail_t)]; 35 zio_block_tail_t vp_zbt; 36 } vdev_phys_t; 37 38 typedef struct vdev_label { 39 char vl_pad1[VDEV_PAD_SIZE]; /* 8K */ 40 char vl_pad2[VDEV_PAD_SIZE]; /* 8K */ 41 vdev_phys_t vl_vdev_phys; /* 112K */ 42 char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */ 43 } vdev_label_t; /* 256K total */ 44 45 /* 46 * Size and offset of embedded boot loader region on each label. 47 * The total size of the first two labels plus the boot area is 4MB. 48 */ 49 #define VDEV_BOOT_OFFSET (2 * sizeof (vdev_label_t)) 50 #define VDEV_BOOT_SIZE (7ULL << 19) /* 3.5M */ 51 52 /* 53 * Size of label regions at the start and end of each leaf device. 54 */ 55 #define VDEV_LABEL_START_SIZE (2 * sizeof (vdev_label_t) + VDEV_BOOT_SIZE) 56 #define VDEV_LABEL_END_SIZE (2 * sizeof (vdev_label_t)) 57 #define VDEV_LABELS 4 58 59 #endif /* _SYS_VDEV_IMPL_H */ 60