The EXT library has some unused code that
we can remove to help reduce the size and
to clean things up some more. Also add a
routine for dumping the group descriptor
table which can be helpful for debugging
issues.
Signed-off-by: James Gutbub <james.gutbub@intel.com>
EXT2/3 library has some limiatation to support
hardware block sizes larger than 512 (e.g. 4KB)
and also does not currently support the flag
INCOMPAT_64BIT which indicates larger group
descriptor sizes. This patch adds flexibility
to support 512 and 4KB block sizes as well as
64bit EXT file systems.
Signed-off-by: James Gutbub <james.gutbub@intel.com>
Currently, Ext23Lib accesses device index 0 only.
It must access proper hardware partition when reading blocks.
- Reproducible with QEMU which has SATA port 5
Signed-off-by: Aiden Park <aiden.park@intel.com>
When determining which extent node to fetch
the filesystem block address from for a file's
data we should count from block 0 of the file
and when we enter into a non-zero extent node
we need to subtract the starting block number
from the file block number we are looking for
so that we don't skip over any blocks.
Signed-off-by: James Gutbub <james.gutbub@intel.com>
The current EXT2/3 library does not support EXT4 partition
reading namely due to a limitation with handling extents
instead of block maps within an I_node's I_block data.
There is a todo currently to support 48-bit logical block
addressing, the code currently does not support reading
larger than 32-bit addresses; throw an ASSERT if upper
16-bits are non-zero.
Signed-off-by: James Gutbub <james.gutbub@intel.com>
Currently when providing a filepath with sub-directories
the EXT2/3 library is not able to locate the file. The
code for traversing sub-directories is already present
but was not enabled. This change enables this support.
Ex: 'boot/iasimage.bin'
Signed-off-by: James Gutbub <james.gutbub@intel.com>
FileSystemLib provides generic interfaces to access file system and
its files as a abstraction of FatLib/ExtLib.
- Added CloseFileSystem
If there are opened files in a specific filesystem, those files
will be de-allocated in CloseFileSystem.
- Added OpenFile/GetFileSize/ReadFile/CloseFile
The ReadFile() does not allocate any memory for the file content.
The caller of OpenFile() MUST allocate necessary memory before
calling ReadFile().
Signed-off-by: Aiden Park <aiden.park@intel.com>
This patch enabled DISABLE_NEW_DEPRECATED_INTERFACES build option by
default so that the deprecated APIs cannot be used in SBL source tree.
It is to enhance the coding for security.
Signed-off-by: Maurice Ma <maurice.ma@intel.com>
The patch gives the platform the configuration capability to only build
required file system into final image.
This helps to have a smaller image for fast boot.
Signed-off-by: Guo Dong <guo.dong@intel.com>
James Gutbub
Aiden Park
Maurice Ma
Guo Dong