Linux: Loading AM335x PRU firmware

somkiatup

Intellectual 335 points

Tool/software: Linux

how can i upload PRU without tool such as jtag?

i would like to compile PRO project on host computer then upload file to beaglebone black board via uart or ethernet.

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

See processors.wiki.ti.com/.../PRU-ICSS_Remoteproc_and_RPMsg

0 somkiatup over 7 years ago in reply to Biser Gatchev-XID

Intellectual 335 points

Dear Biser,

i have tried to loading new code into the PRUs and running but it will show this message

[ 99.493844] remoteproc remoteproc1: powering up 4a334000.pru0
[ 99.517271] remoteproc remoteproc1: Booting fw image am335x-pru0-fw, size 302
32
[ 99.532650] remoteproc remoteproc1: header-less resource table
[ 99.541016] remoteproc remoteproc1: Failed to find resource table
[ 99.552623] remoteproc remoteproc1: Boot failed: -22
-sh: echo: write error: Invalid argument

Best Regards

somkiat

0 Nick Saulnier over 7 years ago in reply to somkiatup

TI__Guru** 100740 points

Hello Somkiat,

1) Was your initial question addressed?

2) There needs to be a resource table in order for remoteproc to load the PRU firmware. Are you trying to load a TI example, or your own code?

You can find Linux examples in your Processor SDK at ti-processor-sdk-linux-am335x-evm-.../example-applications/pru-icss-5.1.0/examples/am335x that include resource tables. For example, PRU_Halt has an empty resource table, while PRU_RPMsg_Echo_Interrupt uses its resource table to define the vrings used to pass RemoteProc messages between the PRU and the ARM.

Regards,
Nick

0 Nick Saulnier over 7 years ago in reply to somkiatup

TI__Guru** 100740 points

Hello Somkiat,

I'm going to mark this as resolved. Please reply if we can offer further assistance.

Regards,
Nick

0 somkiatup over 7 years ago in reply to Nick Saulnier

Intellectual 335 points

Hi Nick,

sorry for late reply you, I already got to resolve initial question, next i will going to modify dts file on a linux kernel folder's ti-processor-sdk.

Do you have suggestion about configuration pin for PRU pin on dts file of am335x?

0 Nick Saulnier over 7 years ago in reply to somkiatup

TI__Guru** 100740 points

Hello Somkiat,

Are you asking about:

Pinmuxing a PRU signal to one of the AM335x pins?

Configuring the PRU to do something? If so, what do you want the PRU to do?

Something else? You may find helpful information at the PRU-ICSS wiki.

Regards,

Nick

0 somkiatup over 7 years ago in reply to Nick Saulnier

Intellectual 335 points

Dear nick,

i already modified my dts file that is work, thank you for your support.

best regards,

Somkiat

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Linux: Loading AM335x PRU firmware