Compilation of Optee-os (Trusted Execution Environment):
1. Pre-requisite
2. Initialize cross-compilation via SDK
3. Prepare optee-os source code
4. Manage optee-os source code
5. Compile optee-os source code
6. Update software on board
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1. Pre-requisite
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OpenSTLinux SDK must be installed.
If you have never configured you git configuration:
$ git config --global user.name "your_name"
$ git config --global user.email "your_email@example.com"
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2. Initialize cross-compilation via SDK
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Source SDK environment:
$ source <path to SDK>/environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi
To verify if your cross-compilation environment have put in place:
$ set | grep CROSS
CROSS_COMPILE=arm-ostl-linux-gnueabi-
Warning: the environment are valid only on the shell session where you have
sourced the sdk environment.
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3. Prepare optee-os source
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If not already done, extract the sources from Developer Package tarball, for example:
$ tar xfJ en.SOURCES-stm32mp1-*.tar.xz
In the optee-os source directory (sources/*/##BP##-##PR##),
you have one optee-os source tarball, the patches and one Makefile:
- ##BP##-##PR##.tar.xz
- 00*.patch
- Makefile.sdk
If you would like to have a git management for the source code move to
to section 4 [Management of optee-os source code with GIT].
Otherwise, to manage optee-os source code without git, you must extract the
tarball now and apply the patch:
$> tar xf ##BP##-##PR##.tar.xz
$> cd ##BP##
$> tar xfz ../fonts.tar.gz
$> for p in `ls -1 ../*.patch`; do patch -p1 < $p; done
You can now move to section 5 [Compile optee-os source code].
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4. Manage optee-os source code with GIT
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If you like to have a better management of change made on optee-os source,
you have 3 solutions to use git
4.1 Get STMicroelectronics optee-os source from GitHub
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URL: https://github.com/STMicroelectronics/optee_os.git
Branch: ##ARCHIVER_ST_BRANCH##
Revision: ##ARCHIVER_ST_REVISION##
$ git clone https://github.com/STMicroelectronics/optee_os.git
$ git checkout -b WORKING ##ARCHIVER_ST_REVISION##
4.2 Create Git from tarball
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$ cd <optee-os source>
$ test -d .git || git init . && git add . && git commit -m "optee-os source code" && git gc
$ git checkout -b WORKING
$ tar xfz ../fonts.tar.gz
$ for p in `ls -1 ../*.patch`; do git am $p; done
MANDATORY: You must update sources
$ cd <directory to optee-os source code>
$ chmod 755 scripts/bin_to_c.py
4.3 Get Git from community and apply STMicroelectronics patches
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* With the optee-os source code from the OP-TEE git repositories:
URL: git://github.com/OP-TEE/optee_os.git
Branch: ##ARCHIVER_COMMUNITY_BRANCH##
Revision: ##ARCHIVER_COMMUNITY_REVISION##
$ git clone git://github.com/OP-TEE/optee_os.git
$ cd optee_os
$ git checkout -b WORKING ##ARCHIVER_COMMUNITY_REVISION##
$ tar xfz <path to patch>/fonts.tar.gz
$ for p in `ls -1 <path to patch>/*.patch`; do git am $p; done
MANDATORY: You must update sources
$ cd <directory to optee-os source code>
$ chmod 755 scripts/bin_to_c.py
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5. Compile optee-os source code
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Since OpenSTLinux activates FIP by default, FIP_artifacts directory path must be specified before launching compilation
- In case of using SOURCES-xxxx.tar.gz of Developer package the FIP_DEPLOYDIR_ROOT must be set as below:
$> export FIP_DEPLOYDIR_ROOT=$PWD/../../FIP_artifacts
To compile optee-os source code with default embedded config:
$> make -f $PWD/../Makefile.sdk all
You can check the configuration throught 'help' target:
$ make -f $PWD/../Makefile.sdk help
To compile only one of the provided devicetree:
$ make -f $PWD/../Makefile.sdk CFG_EMBED_DTB_SOURCE_FILE=stm32mp157f-ev1 all
For a specific devicetree file you need to force not only the devicetree but also the DRAM size settings:
$ make -f $PWD/../Makefile.sdk CFG_EMBED_DTB_SOURCE_FILE=<your_devicetree> OPTEE_DRAMSIZE=<dram_size_value_in_hexadecimal> all
By default, the build results for this component are available in $PWD/../deploy directory.
If needed, this deploy directory can be specified by added "DEPLOYDIR=<your_deploy_dir_path>" compilation option to the build command line above.
In case DEPLOYDIR=$FIP_DEPLOYDIR_ROOT/optee it overwrites files directly in FIP artifacts directory.
The generated FIP images are available in $FIP_DEPLOYDIR_ROOT/fip
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6. Update software on board
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Please use STM32CubeProgrammer and only tick the ssbl-boot and fip partitions (more informations on the wiki website http://wiki.st.com/stm32mpu)
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