optee solution for RISC-V

[aousherovitch-tt]

Hello,
My name is Alex Ousherovitch and I am a software engineer at Tenstorrent (https://tenstorrent.com).
I came across OP-TEE/optee_os#6173 looking for an optee solution for RISC-V. I am wondering if the optee_5.10 branch (https://github.com/Nuclei-Software/nuclei-linux-sdk/blob/feature/optee_5.10/optee/README_en.md) is still the latest and greatest you have for this?
Also, are you sharing the qemu sources or only the binaries?
I have tried your qemu binaries (that I could find) with this branch - qemu-2022.12 and qemu-2023.07.19 but with both of them, QEMU hangs as follows, before starting the SM:

qemu-system-riscv64 -M nuclei_u,download=flashxip -smp 8 -m 256M -cpu nuclei-ux900fd,ext= -bios /path/to/nuclei-linux-sdk/work/demosoc/freeloader/freeloader.elf -nographic -drive file=/path/to/nuclei-linux-sdk/work/demosoc/disk.img,if=sd,format=raw

OpenSBI v0.9
   ____                    _____ ____ _____
  / __ \                  / ____|  _ \_   _|
 | |  | |_ __   ___ _ __ | (___ | |_) || |
 | |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
 | |__| | |_) |  __/ | | |____) | |_) || |_
  \____/| .__/ \___|_| |_|_____/|____/_____|
        | |
        |_|

Platform Name             : Nuclei Demo SoC
Platform Features         : timer,mfdeleg
Platform HART Count       : 8
Firmware Base             : 0xa0000000
Firmware Size             : 184 KB
Runtime SBI Version       : 0.2

Domain0 Name              : root
Domain0 Boot HART         : 6
Domain0 HARTs             : 0*,1*,2*,3*,4*,5*,6*,7*
Domain0 Region00          : 0x00000000a0000000-0x00000000a003ffff ()
Domain0 Region01          : 0x0000000000000000-0xffffffffffffffff (R,W,X)
Domain0 Next Address      : 0x00000000a0200000
Domain0 Next Arg1         : 0x00000000a8000000
Domain0 Next Mode         : S-mode
Domain0 SysReset          : yes

Boot HART ID              : 6
Boot HART Domain          : root
Boot HART ISA             : rv64imafdcsu
Boot HART Features        : scounteren,mcounteren
Boot HART PMP Count       : 16
Boot HART PMP Granularity : 4
Boot HART PMP Address Bits: 54
Boot HART MHPM Count      : 0
Boot HART MHPM Count      : 0
Boot HART MIDELEG         : 0x0000000000000222
Boot HART MEDELEG         : 0x000000000000b109

Any ideas? is that a known issue?
Thank you very much for your time!
Alex

[fanghuaqi]

Hi @aousherovitch-tt , please check this guide #13 to take a try, make sure switch to feature/optee_5.10 branch, we shared a prebuilt qemu binary in it, you need to follow steps to run it.

For the qemu source code, please check https://github.com/riscv-mcu/qemu/commits/nuclei/8.0 branch