Soemtimes when JTAG based debug is not available, it might be easier
to have Shell access in earlier stage to check lots of platform
settings. Today it is impossible because full Shell has lots of other
dependencies which might not satisfy in early stage. This patch added
a PCD PcdMiniShellEnabled to build a mini Shell with very few
dependencies. This mini Shell can be used in early debug phase for SBL.
To use it, add the following to override the PCD for a specific stage
in BootloaderCorePkg.dsc.
EX:
$(PLATFORM_PACKAGE)/Stage1B/Stage1B.inf {
<PcdsFeatureFlag>
gPlatformCommonLibTokenSpaceGuid.PcdMiniShellEnabled | TRUE
...
}
Then include ShellLib.h in stage C code and add ShellLib in related
stage INF file. If adding it into Stage1A, it needs to be after the
Stage1A banner print out.
Signed-off-by: Maurice Ma <maurice.ma@intel.com>
This patch removed global variable usages in ShellLib. It is
required when running Shell in early stage from flash. In this
case global variable is read-only. All memory should be allocated
from stack or heap.
Signed-off-by: Maurice Ma <maurice.ma@intel.com>
This will fully support PatchCheck.py.
- Remove all trailing whitespace
- Convert LF to CRLF by default
- Update EFI_D_* to DEBUG_*
- Re-enable CRLF check in PatchCheck.py
Signed-off-by: Aiden Park <aiden.park@intel.com>
This patch added command line history upport in SBL Shell. It makes
it easy to run a previous command using Up/Down arrow key.
Signed-off-by: Maurice Ma <maurice.ma@intel.com>
Maurice Ma
Aiden Park