With large SDHC cards, the ext2/3 filesystem put on large partitions by mkfs.ext2/3 is not how it used to be, it has a dynamic multiplier for its block addressing. Without these changes, based on a patch by Ryan Chen
http://lists.denx.de/pipermail/u-boot/2008-July/037786.html we cannot parse large ext3 filesystem. Signed-off-by: Andy Green <[EMAIL PROTECTED]> --- src/fs/ext2.c | 19 +++++++++++++++---- 1 files changed, 15 insertions(+), 4 deletions(-) diff --git a/src/fs/ext2.c b/src/fs/ext2.c index ffbffa0..bd35b51 100644 --- a/src/fs/ext2.c +++ b/src/fs/ext2.c @@ -65,6 +65,12 @@ extern int ext2fs_devread(int sector, int byte_offset, int byte_len, /* The size of an ext2 block in bytes. */ #define EXT2_BLOCK_SIZE(data) (1 << LOG2_BLOCK_SIZE(data)) +#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 +uint32_t ext2_inode_size = EXT2_GOOD_OLD_INODE_SIZE; + /* The ext2 superblock. */ struct ext2_sblock { uint32_t total_inodes; @@ -216,7 +222,7 @@ static int ext2fs_read_inode if (status == 0) return 0; - inodes_per_block = EXT2_BLOCK_SIZE(data) / 128; + inodes_per_block = EXT2_BLOCK_SIZE(data) / ext2_inode_size; blkno =(ino % __le32_to_cpu(sblock->inodes_per_group)) / inodes_per_block; blkoff =(ino % __le32_to_cpu(sblock->inodes_per_group)) % @@ -225,9 +231,9 @@ static int ext2fs_read_inode puts("ext2fs read inode blkno %d blkoff %d\n", blkno, blkoff); #endif /* Read the inode. */ - status = ext2fs_devread(((__le32_to_cpu(blkgrp.inode_table_id) + - blkno) << LOG2_EXT2_BLOCK_SIZE(data)), - sizeof(struct ext2_inode) * blkoff, + status = ext2fs_devread((__le32_to_cpu(blkgrp.inode_table_id) + + blkno) << LOG2_EXT2_BLOCK_SIZE(data), + ext2_inode_size * blkoff, sizeof(struct ext2_inode),(char *) inode); return !!status; @@ -867,6 +873,11 @@ int ext2fs_mount(void) { if (__le16_to_cpu(data->sblock.magic) != EXT2_MAGIC) goto fail; + if (__le32_to_cpu(data->sblock.revision_level) == EXT2_GOOD_OLD_REV) + ext2_inode_size = EXT2_GOOD_OLD_INODE_SIZE; + else + ext2_inode_size = __le16_to_cpu (data->sblock.inode_size); + data->diropen.data = data; data->diropen.ino = 2; data->diropen.inode_read = 1;
