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zfs: Add ZFS filesystem support

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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:
e7b6ef3ac3

Signed-off-by: Jorgen Lundman <lundman@lundman.net>
This commit is contained in:
Jorgen Lundman 2012-07-19 20:48:25 +00:00 • committed by Wolfgang Denk
parent 753ac61088
commit 4d3c95f5ea
30 changed files with 4750 additions and 1 deletions
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70
include/zfs/vdev_impl.h Normal file
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/*
* 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 */