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>
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 */