porting optee to alwinner h5

[Avani8]

I'm trying to port optee to allwinner h5 board and for that I've created nano.xml here, and makefile based on juno.mk called nano.mk

I am able to compile the framwork and create bootable sd card but when I boot up I am getting following screenshot result :

some notes:
art-tf : I've ported support for allwinner h5 board called sun50iw2p1 here
optee_os: I've made changes for h5 board support here
linux: I'm using frendlyarm core linux as seen here

I'm thinking do I have to use linaro-swg/linux ?
if so I don't see support for all winner h5 board

appreciate any advice

Thanks

Avani

[jforissier]

Hi @Avani8,

Is tee-supplicant running?

[Avani8]

how go I check that ?

[jforissier]

ps -ef | grep supplicant

[Avani8]

TEE test application started with device [(null)]
Failed to open TEE context: 0xffff0008
# tee-supplicant &
# ERR [633] TSUP:main:663: failed to find an OP-TEE supplicant device

I think yes :

C
# ^C
# ps -ef | grep supplicant
  644 root     grep supplicant
[1]+  Done(1)                    tee-supplicant
# 

[jforissier]

OK, so the TEE device is missing in /dev. tee-supplicant fails to start. What does dmesg | grep optee say?

[Avani8]

[1]+ Done(1) tee-supplicant

dmesg | grep optee

nothing

[jforissier]

Your kernel is lacking the OP-TEE driver. You need to enable CONFIG_TEE=y and CONFIG_OPTEE=y in the kernel config (and re-build the kernel).

[Avani8]

sure ...doing it now..thanks ..will post the results

[Avani8]

after adding CONFIG_TEE=y and CONFIG_OPTEE=y in config file and recompiling

[jenswi-linaro]

What about the DTB, does it contain an optee node?

[Avani8]

So I used sudo dtc -I dtb -O dts sun50i-h5-nanopi-neo-plus2.dtb > a.txt
and attache dis the result of it. not seeing optee in it
a.txt

[jenswi-linaro]

That's needed too:

        firmware {
                optee {
                        compatible = "linaro,optee-tz";
                        method = "smc";
                };
        };

[Avani8]

ohh I see... how hard is to add support for h5 board on swg-linux ?
I mean i have dts info and Friendly source code

[jenswi-linaro]

That's easy just add something like 14e21cb ("arm64: dt: hikey: Add optee node") for the dts in question

[Avani8]

So I've added code as 14e21cb in dts but getting the same result.

can some one please look at the buildroot part of the code here and suggest am I doing something wrong in building the image ?

steps I followed are as follow
1)after sudo make all I take rootfs.cpio.gz from out-br/images and copy to rootfs of sd card
2) copy u-boot.itb and u-boot-spl.bin into sdcard
3) copy all the files which are commented in flash code in nano.mk to boot partition on sd card
#$(FTP-UPLOAD) $(ARM_TF_PATH)/build/sun50i_h5/release/bl31.bin
#$(FTP-UPLOAD) $(ARM_TF_PATH)/build/sun50i_h5/release/fip.bin
#$(FTP-UPLOAD) $(ROOT)/linux/arch/arm64/boot/Image
#$(FTP-UPLOAD) $(ROOT)/linux/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi*.dtb
#$(FTP-UPLOAD) $(ROOT)/out-br/images/rootfs.cpio.gz
and lastly sunxi boards are required boot.scr to load the files from sc card which I generate from boot.cmd as shown here.

then plug the card into device and getting attached screenshot result.