grub: add patch to support 256 byte inodes

This patch is originally from oe-classic, it seemed to
have been dropped in the transition for some reason.
However I needed this patch to boot a system with 256 byte
inodes.

(From OE-Core rev: f36fd55e8721559dee2e9b57930cd3962958ba9e)

Signed-off-by: Jack Mitchell <jmitchell@cbnl.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 107 insertions, 5 deletions

diff --git a/meta/recipes-bsp/grub/grub-0.97/grub-support-256byte-inode.patch b/meta/recipes-bsp/grub/grub-0.97/grub-support-256byte-inode.patch
new file mode 100644
index 0000000000..d225d13dce
--- /dev/null
+++ b/meta/recipes-bsp/grub/grub-0.97/grub-support-256byte-inode.patch
@@ -0,0 +1,101 @@
+Upstream-Status: Inappropriate [No Longer Maintained]
+
+diff -Naur grub-0.97-800/stage2/fsys_ext2fs.c grub-0.97-810/stage2/fsys_ext2fs.c
+--- grub-0.97-800/stage2/fsys_ext2fs.c  2008-07-21 00:40:21.668879475 -0600
++++ grub-0.97-810/stage2/fsys_ext2fs.c  2008-07-21 01:01:11.063953773 -0600
+@@ -79,7 +79,52 @@
+     __u32 s_rev_level;         /* Revision level */
+     __u16 s_def_resuid;                /* Default uid for reserved blocks */
+     __u16 s_def_resgid;                /* Default gid for reserved blocks */
+-    __u32 s_reserved[235];     /* Padding to the end of the block */
++    /*
++     * These fields are for EXT2_DYNAMIC_REV superblocks only.
++     *
++     * Note: the difference between the compatible feature set and
++     * the incompatible feature set is that if there is a bit set
++     * in the incompatible feature set that the kernel doesn't
++     * know about, it should refuse to mount the filesystem.
++     *
++     * e2fsck's requirements are more strict; if it doesn't know
++     * about a feature in either the compatible or incompatible
++     * feature set, it must abort and not try to meddle with
++     * things it doesn't understand...
++     */
++    __u32 s_first_ino;         /* First non-reserved inode */
++    __u16 s_inode_size;                /* size of inode structure */
++    __u16 s_block_group_nr;    /* block group # of this superblock */
++    __u32 s_feature_compat;    /* compatible feature set */
++    __u32 s_feature_incompat;  /* incompatible feature set */
++    __u32 s_feature_ro_compat; /* readonly-compatible feature set */
++    __u8  s_uuid[16];          /* 128-bit uuid for volume */
++    char  s_volume_name[16];   /* volume name */
++    char  s_last_mounted[64];  /* directory where last mounted */
++    __u32 s_algorithm_usage_bitmap; /* For compression */
++    /*
++     * Performance hints.  Directory preallocation should only
++     * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
++     */
++    __u8  s_prealloc_blocks;   /* Nr of blocks to try to preallocate*/
++    __u8  s_prealloc_dir_blocks;       /* Nr to preallocate for dirs */
++    __u16 s_reserved_gdt_blocks;/* Per group table for online growth */
++    /*
++     * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
++     */
++    __u8 s_journal_uuid[16];   /* uuid of journal superblock */
++    __u32 s_journal_inum;      /* inode number of journal file */
++    __u32 s_journal_dev;       /* device number of journal file */
++    __u32 s_last_orphan;       /* start of list of inodes to delete */
++    __u32 s_hash_seed[4];      /* HTREE hash seed */
++    __u8  s_def_hash_version;  /* Default hash version to use */
++    __u8  s_jnl_backup_type;   /* Default type of journal backup */
++    __u16 s_reserved_word_pad;
++    __u32 s_default_mount_opts;
++    __u32 s_first_meta_bg;     /* First metablock group */
++    __u32 s_mkfs_time;         /* When the filesystem was created */
++    __u32 s_jnl_blocks[17];    /* Backup of the journal inode */
++    __u32 s_reserved[172];     /* Padding to the end of the block */
+   };
+ 
+ struct ext2_group_desc
+@@ -218,6 +263,14 @@
+ #define EXT2_ADDR_PER_BLOCK(s)          (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
+ #define EXT2_ADDR_PER_BLOCK_BITS(s)            (log2(EXT2_ADDR_PER_BLOCK(s)))
+ 
++#define EXT2_GOOD_OLD_REV   0   /* The good old (original) format */
++#define EXT2_DYNAMIC_REV    1   /* V2 format w/ dynamic inode sizes */
++#define EXT2_GOOD_OLD_INODE_SIZE 128
++#define EXT2_INODE_SIZE(s)  (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
++                 EXT2_GOOD_OLD_INODE_SIZE : \
++                 (s)->s_inode_size)
++#define EXT2_INODES_PER_BLOCK(s)       (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s))
++
+ /* linux/ext2_fs.h */
+ #define EXT2_BLOCK_SIZE_BITS(s)        ((s)->s_log_block_size + 10)
+ /* kind of from ext2/super.c */
+@@ -553,7 +606,7 @@
+       gdp = GROUP_DESC;
+       ino_blk = gdp[desc].bg_inode_table +
+        (((current_ino - 1) % (SUPERBLOCK->s_inodes_per_group))
+-        >> log2 (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode)));
++        >> log2 (EXT2_INODES_PER_BLOCK (SUPERBLOCK)));
+ #ifdef E2DEBUG
+       printf ("inode table fsblock=%d\n", ino_blk);
+ #endif /* E2DEBUG */
+@@ -565,13 +618,12 @@
+       /* reset indirect blocks! */
+       mapblock2 = mapblock1 = -1;
+ 
+-      raw_inode = INODE +
+-       ((current_ino - 1)
+-        & (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode) - 1));
++      raw_inode = (struct ext2_inode *)((char *)INODE +
++       ((current_ino - 1) & (EXT2_INODES_PER_BLOCK (SUPERBLOCK) - 1)) *
++       EXT2_INODE_SIZE (SUPERBLOCK));
+ #ifdef E2DEBUG
+       printf ("ipb=%d, sizeof(inode)=%d\n",
+-             (EXT2_BLOCK_SIZE (SUPERBLOCK) / sizeof (struct ext2_inode)),
+-             sizeof (struct ext2_inode));
++             EXT2_INODES_PER_BLOCK (SUPERBLOCK), EXT2_INODE_SIZE (SUPERBLOCK));
+       printf ("inode=%x, raw_inode=%x\n", INODE, raw_inode);
+       printf ("offset into inode table block=%d\n", (int) raw_inode - (int) INODE);
+       for (i = (unsigned char *) INODE; i <= (unsigned char *) raw_inode;
diff --git a/meta/recipes-bsp/grub/grub_0.97.bb b/meta/recipes-bsp/grub/grub_0.97.bb
index 38f39121d6..376244e331 100644
--- a/meta/recipes-bsp/grub/grub_0.97.bb
+++ b/meta/recipes-bsp/grub/grub_0.97.bb
@@ -13,11 +13,12 @@ RDEPENDS_${PN} = "diffutils"
 PR = "r6"
 
 SRC_URI = "ftp://alpha.gnu.org/gnu/grub/grub-${PV}.tar.gz; \
-            file://no-reorder-functions.patch \
-            file://autohell.patch \
-            file://grub_fix_for_automake-1.12.patch \
-            file://objcopy-absolute.patch \
-            "
+           file://no-reorder-functions.patch \
+           file://autohell.patch \
+           file://grub_fix_for_automake-1.12.patch \
+           file://objcopy-absolute.patch \
+           file://grub-support-256byte-inode.patch \
+"
 
 SRC_URI[md5sum] = "cd3f3eb54446be6003156158d51f4884"
 SRC_URI[sha256sum] = "4e1d15d12dbd3e9208111d6b806ad5a9857ca8850c47877d36575b904559260b"