EmbeddedPkg Fdt - lersek/edk2 GitHub Wiki

Device Tree (DT) is a format used to describe the hardware resources of a specific platform. Lbfdt library (dual license - BSD/GPL) is often used to read or modify the information of the FDT (Flat Device Tree).

The current version of EDK2 used libdft from Wednesday 16th January 2014. 

    Tag Version 1.4.0
    
    Signed-off-by: Jon Loeliger <[email protected]>
  • Here are the instructions to update the version of libfdt:
1. Clone the dtc into a temporary directory: 
cd $(EDK2_ROOT)/EmbeddedPkg/Library
git clone git://git.jdl.com/software/dtc.git

2. Copy the content of 'libfdt' into EmbeddedPkg/Library/FdtLib/ 

cd dtc
cp -a libfdt/* ../FdtLib/

3. Copy the libfdt headers: 

mv ../FdtLib/libfdt.h ../../Include/
mv ../FdtLib/fdt.h ../../Include/
rm ../FdtLib/libfdt_env.h
  • To add libfdt support to your EDK2 firmware, add the following line to your platform DSC file (required by BdsLib):
FdtLib|EmbeddedPkg/Library/FdtLib/FdtLib.inf

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