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author | Jorgen Lundman <lundman@lundman.net> | 2012-07-19 20:48:25 (GMT) |
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committer | Wolfgang Denk <wd@denx.de> | 2012-08-09 21:42:20 (GMT) |
commit | 4d3c95f5ea7c737a21cd6b9c59435ee693b3f127 (patch) | |
tree | d11c09245a46d3b0a55c0937874fb2debcb96490 /include/zfs/vdev_impl.h | |
parent | 753ac610880e6e563d0384bb114f8b41df89e520 (diff) | |
download | u-boot-4d3c95f5ea7c737a21cd6b9c59435ee693b3f127.tar.xz |
zfs: Add ZFS filesystem support
U-Boot port is based on sources forked from GRUB-0.97 by Sun in 2004,
which can be found here:
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/grub/grub-0.97/stage2/zfs-include/zfs.h
Released by Sun for GRUB under the license:
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
GRUB official releases include ZFS in version:
ftp://alpha.gnu.org/gnu/grub/grub-1.99~rc1.tar.gz
And patched against GRUB Bazaar repository for ashift fixes (4KB HDDs)
more conveniently found at github:
https://github.com/pendor/grub-zfs/commit/e7b6ef3ac3b9685ac4c394c897b1d4221b7381f1
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
Diffstat (limited to 'include/zfs/vdev_impl.h')
-rw-r--r-- | include/zfs/vdev_impl.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/include/zfs/vdev_impl.h b/include/zfs/vdev_impl.h new file mode 100644 index 0000000..3aa646e --- /dev/null +++ b/include/zfs/vdev_impl.h @@ -0,0 +1,70 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +/* + * Copyright 2010 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _SYS_VDEV_IMPL_H +#define _SYS_VDEV_IMPL_H + +#define VDEV_SKIP_SIZE (8 << 10) +#define VDEV_BOOT_HEADER_SIZE (8 << 10) +#define VDEV_PHYS_SIZE (112 << 10) +#define VDEV_UBERBLOCK_RING (128 << 10) + +/* ZFS boot block */ +#define VDEV_BOOT_MAGIC 0x2f5b007b10cULL +#define VDEV_BOOT_VERSION 1 /* version number */ + +typedef struct vdev_boot_header { + uint64_t vb_magic; /* VDEV_BOOT_MAGIC */ + uint64_t vb_version; /* VDEV_BOOT_VERSION */ + uint64_t vb_offset; /* start offset (bytes) */ + uint64_t vb_size; /* size (bytes) */ + char vb_pad[VDEV_BOOT_HEADER_SIZE - 4 * sizeof(uint64_t)]; +} vdev_boot_header_t; + +typedef struct vdev_phys { + char vp_nvlist[VDEV_PHYS_SIZE - sizeof(zio_eck_t)]; + zio_eck_t vp_zbt; +} vdev_phys_t; + +typedef struct vdev_label { + char vl_pad[VDEV_SKIP_SIZE]; /* 8K */ + vdev_boot_header_t vl_boot_header; /* 8K */ + vdev_phys_t vl_vdev_phys; /* 112K */ + char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */ +} vdev_label_t; /* 256K total */ + +/* + * Size and offset of embedded boot loader region on each label. + * The total size of the first two labels plus the boot area is 4MB. + */ +#define VDEV_BOOT_OFFSET (2 * sizeof(vdev_label_t)) +#define VDEV_BOOT_SIZE (7ULL << 19) /* 3.5M */ + +/* + * Size of label regions at the start and end of each leaf device. + */ +#define VDEV_LABEL_START_SIZE (2 * sizeof(vdev_label_t) + VDEV_BOOT_SIZE) +#define VDEV_LABEL_END_SIZE (2 * sizeof(vdev_label_t)) +#define VDEV_LABELS 4 + +#endif /* _SYS_VDEV_IMPL_H */ |