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>
Currently, all shell commands are statically defined in header file.
Add shell command registration API to allow include/exclude shell
commands dynamically.
Later, some debug shell commands will be added according to build
mode or debug mask.
- TBD: Sorting shell commands by name
Signed-off-by: Aiden Park <aiden.park@intel.com>
This patch adds a new shell command `dmesg` to print out the contents of
the boot log buffer.
Signed-off-by: Borgerson, Matthew A <matthew.a.borgerson@intel.com>
This patch simplifies the GraphicsLib code and adds an abstraction layer
for printing to a virtual "console," through the familier
ConsoleWrite(buffer, len) style function call.
ConsoleWrite can be configured to output to either the serial port, or
the display framebuffer, or both. This primarily enables the command
shell to be used with a display and keyboard.
Signed-off-by: Borgerson, Matthew A <matthew.a.borgerson@intel.com>
Maurice Ma
Aiden Park
Guo Dong
Borgerson, Matthew A