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doc: Add build instructions for OP-TEE backed EFI variables

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Since that invlolves external projects and not only U-Boot, add guidance
for supported platforms

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Ilias Apalodimas 2021-04-01 13:35:38 +03:00 committed by Heinrich Schuchardt
parent 4bc4798f41
commit bfb5ce4edd
1 changed files with 57 additions and 1 deletions
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58
doc/develop/uefi/uefi.rst
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@ -219,7 +219,63 @@ non-volatile variables. When calling the variable services via the
OP-TEE API U-Boot's OP-TEE supplicant relays calls to the RPMB driver
which has to be enabled via CONFIG_SUPPORT_EMMC_RPMB=y.
[1] https://optee.readthedocs.io/ - OP-TEE documentation
EDK2 Build instructions
***********************
.. code-block:: bash
$ git clone https://github.com/tianocore/edk2.git
$ git clone https://github.com/tianocore/edk2-platforms.git
$ cd edk2
$ git submodule init && git submodule update --init --recursive
$ cd ..
$ export WORKSPACE=$(pwd)
$ export PACKAGES_PATH=$WORKSPACE/edk2:$WORKSPACE/edk2-platforms
$ export ACTIVE_PLATFORM="Platform/StandaloneMm/PlatformStandaloneMmPkg/PlatformStandaloneMmRpmb.dsc"
$ export GCC5_AARCH64_PREFIX=aarch64-linux-gnu-
$ source edk2/edksetup.sh
$ make -C edk2/BaseTools
$ build -p $ACTIVE_PLATFORM -b RELEASE -a AARCH64 -t GCC5 -n `nproc`
OP-TEE Build instructions
*************************
.. code-block:: bash
$ git clone https://github.com/OP-TEE/optee_os.git
$ cd optee_os
$ ln -s ../Build/MmStandaloneRpmb/RELEASE_GCC5/FV/BL32_AP_MM.fd
$ export ARCH=arm
$ CROSS_COMPILE32=arm-linux-gnueabihf- make -j32 CFG_ARM64_core=y \
PLATFORM=<myboard> CFG_STMM_PATH=BL32_AP_MM.fd CFG_RPMB_FS=y \
CFG_RPMB_FS_DEV_ID=0 CFG_CORE_HEAP_SIZE=524288 CFG_RPMB_WRITE_KEY=1 \
CFG_CORE_HEAP_SIZE=524288 CFG_CORE_DYN_SHM=y CFG_RPMB_TESTKEY=y \
CFG_REE_FS=n CFG_CORE_ARM64_PA_BITS=48 CFG_TEE_CORE_LOG_LEVEL=1 \
CFG_TEE_TA_LOG_LEVEL=1 CFG_SCTLR_ALIGNMENT_CHECK=n
U-Boot Build instructions
*************************
Although the StandAloneMM binary comes from EDK2, using and storing the
variables is currently available in U-Boot only.
.. code-block:: bash
$ git clone https://github.com/u-boot/u-boot.git
$ cd u-boot
$ export CROSS_COMPILE=aarch64-linux-gnu-
$ export ARCH=<arch>
$ make <myboard>_defconfig
$ make menuconfig
Enable ``CONFIG_OPTEE``, ``CONFIG_CMD_OPTEE_RPMB`` and ``CONFIG_EFI_MM_COMM_TEE``
.. warning::
- Your OP-TEE platform port must support Dynamic shared memory, since that's
the only kind of memory U-Boot supports for now.
[1] https://optee.readthedocs.io/en/latest/building/efi_vars/stmm.html
Executing the boot manager
~~~~~~~~~~~~~~~~~~~~~~~~~~