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Texas Instruments K3
Trusted Firmware-A (TF-A) implements the EL3 firmware layer for Texas Instruments K3 SoCs.
Boot Flow
R5(U-Boot) --> TF-A BL31 --> BL32(OP-TEE) --> TF-A BL31 --> BL33(U-Boot) --> Linux
Optional direct to Linux boot
--> BL33(Linux)
Texas Instruments K3 SoCs contain an R5 processor used as the boot master, it
loads the needed images for A53 startup, because of this we do not need BL1 or
BL2 TF-A stages.
Build Instructions
.. code:: shell
make CROSS_COMPILE=aarch64-linux-gnu- PLAT=k3 SPD=opteed all
.. code:: shell
make ARCH=arm CROSS_COMPILE64=aarch64-linux-gnu- PLATFORM=k3 CFG_ARM64_core=y all
R5 U-Boot:
.. code:: shell
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am65x_evm_r5_defconfig
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- SYSFW=<path to SYSFW>
A53 U-Boot:
.. code:: shell
make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- am65x_evm_a53_defconfig
make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- ATF=<path> TEE=<path>
Deploy Images
.. code:: shell
cp tiboot3.bin tispl.bin u-boot.img /sdcard/boot/