Does current OPTEE OS code support RISC-V 32?

OP-TEE / optee_os

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Closed ddb2100 closed 4 days ago

ddb2100 commented 1 week ago

I am trying to build OPTEE OS for RISC-V 32. But it reports some error. For example,

core/arch/risc/kernel/spinlock.S uses "addiw" which is only valid for RV64
core/arch/riscv/kernel/asm-defines.c uses "offsetof(struct thread_ctx, kern_sp)" but kern_sp is member for thread_ctx only for RV64 as defined in core/include/kernel/thread_private.h.

Seems to me that current OPTEE OS only supports RISC-V 64, not RISC-V 32, is that the case? Thank you.

gagachang commented 1 week ago

Seems to me that current OPTEE OS only supports RISC-V 64, not RISC-V 32, is that the case?

Yes, currently only RV64 is supported.

May I know why you need RV32 OP-TEE OS ? Which non-secure OS do you use? RV32 Linux kernel ?