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Stanley Chang
aca5762eec
This patch fixes an issue that SBL fails to load a file in Ext4 partition,
when
1. the ext4 partition uses Extent
2. the inode's first extent block is an internal node
3. the node has only one entry (i.e., eh_entries = 1)
Under the above conditions, the data block may point to the child of
first ei_block when accessing the data within the range of child node.
Test method:
1. Install Ubuntu 20.04.5 LTS/(min install) in an eMMC disk
Note: this issue is only reproducible when loading a file
satisfying all conditions mentioned above (i.e., eh_entries = 1).
So far, the /boot/initrd.img after installing Ubuntu in an eMMC
(where part table: 500MB(FAT), 20GB (EXT4), 4GB (Swap)) satisfies
the conditions. However, for some reasons, when using USB SATA disk,
it will not generate a /boot/initr.rd meeting the conditions.
2. Boot to OSLoader
3. "fs init 2:0 0 1" the eMMC disk (assume the HW:SW-part is 0 1)
4. "fs load boot/initrd.img"
Expected result:
1. With this patch: successfully load the file.
2. Without this patch: ASSERT [OsLoader] ..
Verified: EHL CRB
Signed-off-by: Stanley Chang <stanley.chang@intel.com>