Comments (6)
Hi @Fizbanoide,
right, you need to use UART (you can buy the chipest USB-TTL adapter for a couple bucks, it should work) to be able to receive SW output (from OPTEE OS core and TAs)
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Hi @Fizbanoide ,
Glad to hear that you got that working. Regarding USB, what I have is a normal USB to UART cable. With that connected to the pins according to section 6.1, you should be able to get the debug prints by just open /dev/ttyUSB0
(or so) on PC connected to the Pi.
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Thanks @igoropaniuk and @jbech-linaro , I wasn't sure about it ! Any chance otherwise I can write in a log file that I can access from the Rpi3 ?
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@Fizbanoide ,
I'm not sure if it's a good advice from my side, but if an setup with UART doesn't currently work for you, you can try to follow this discussion OP-TEE/optee_os#954 and as temporary solution apply/rework patches from RFC pull requests OP-TEE/optee_os#810 OP-TEE/optee_client#51 by @jforissier (unfortunately they weren't merged).
These patches introduce a possibility to forward debug output to linux syslog (I guess that's what you asked for)
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@igoropaniuk I'll check those, thanks !
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Hi guys,
Just received the UART cable, and it's working perfectly with Busybox. Thanks again for your help @igoropaniuk @jbech-linaro !
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