Hi Christoph,

The SPL_OPTEE_IMAGE is suppose to use like ATF for armv7:

TPL->SPL->BL31/ATF/OPTEE->U-Boot.

But not for OPTEE use as a BL32 after BL31.

BL31 and U-Boot is package as a itb file, so it's easy to add a BL32, but you may need to

study how BL31 get entry to BL32 and then add support for it.

Thanks,

- Kever

On 2023/2/22 04:16, Christoph Fritz wrote:

Hello,

my goal is to load OP-TEE after BL31 and before u-boot, so I enabled CONFIG_SPL_OPTEE_IMAGE.

But it fails to build (tested current master):

$ make -j$(nproc) CROSS_COMPILE=aarch64-linux-gnu- rock-pi-4-rk3399_defconfig all

./arch/arm/include/asm/unified.h: Assembler messages: ./arch/arm/include/asm/unified.h:12: Error: unknown pseudo-op: `.syntax' common/spl/spl_optee.S:11: Error: operand 1 must be an integer register -- `mov pc,r3' make[3]: *** [scripts/Makefile.build:292: spl/common/spl/spl_optee.o] Error 1 make[2]: *** [scripts/Makefile.spl:533: spl/common/spl] Error 2 make[2]: *** Waiting for unfinished jobs....

Without CONFIG_SPL_OPTEE_IMAGE the board starts like this: TPL -> SPL -> BL31 -> u-boot

What's the correct way to start OP-TEE on rk3399?

Any ideas?

Thanks -- Christoph