Files
system76-edk2/ShellPkg
Laszlo Ersek 8989625304 ShellPkg: BcfgDisplayDump(): fix reporting of OptionalData
In this cleaned up form of BcfgDisplayDump(), it is easier to see that the

  OptionalDataOffset <= BufferSize

expression, used to report whether optional data are *absent*, is
incorrect. For any well-formed EFI_LOAD_OPTION, this inequality always
holds.

Optional data are present exactly if

  OptionalDataOffset < BufferSize

therefore the absence condition is the negation of the above,

  OptionalDataOffset >= BufferSize

This patch fixes the bug where BCFG always reports "Optional- N", even if
optional data exist.

Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Ryan Harkin <ryan.harkin@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19715 6f19259b-4bc3-4df7-8a09-765794883524
2016-01-21 18:40:30 +00:00
..
2012-04-24 06:49:39 +00:00
2011-12-13 18:45:44 +00:00

============================================================================
                                 OVERVIEW
============================================================================
The UEFI 2.0 shell provides a standard pre-boot command line processor.
It is similar to the EDK EFI Shell or a *nix command line parser.

============================================================================
                    HOW TO INCORPORATE THIS SHELL INTO NT32
============================================================================
The instructions below are included as a sample and template on how a 
developer may integrate this code into an existing platform:

1. Add this shell build to the NT32 build:
   Add the shell.inf to the [components] section as it is in the ShellPkg.dsc.

2. Update system PCDs to support this new module
   Update the PCD as follows using the Shell's PCD:
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdShellFile|{ 0x83, 0xA5, 0x04, 0x7C, 0x3E, 0x9E, 0x1C, 0x4F, 0xAD, 0x65, 0xE0, 0x52, 0x68, 0xD0, 0xB4, 0xD1 }

3. Remove the old shell from the NT32 Firmware list
   Remove the FILE APPLICATION section for the old shell.

4. Add this shell to the NT32 firmware list
   Add the Shell.INF to the end of the list of DXE modules.

5. Build NT32


============================================================================