am437x-pru*-prueth-fw.elf source codes

Tomas Marek

Hello,

I am experimenting with Linux PRU-ICSS Ethernet driver on AM437x IDK. I build the custom Linux distribution using Yocto + meta-ti layer and everything works well. I have just one question regarding the PRU-ICSS FW source codes. I noticed the PRU-ICSS ETH FW (am437x-pru0-prueth-fw.elf, am437x-pru1-prueth-fw.elf) is downloaded from git://git.ti.com/processor-firmware/ti-linux-firmware.git repository but I cannot find source files there (just a binaries). I did not find the source files neither in the current Linux processor SDK (git://git.ti.com/processor-sdk/processor-sdk-linux.git, branch processor-sdk-linux-rt-02.00.02, revision 4415f52a). I can only found source files in RTOS SDK (ti-processor-sdk-rtos-am437x-evm-02.00.01.07, pdk_am437x_1_0_1\packages\ti\transport\ndk\nimu_icss\src).

So, my questions are:

1) Are the source codes for PRU ETH FW same for Linux and RTOS operating systems?

2) If not, are the PRU ETH FW source codes used by Linux available and where can I found them?

Thanks a lot

Best regards

Tomas

over 9 years ago

0 Yordan Kovachev over 9 years ago

TI__Guru**** 161600 points

Hi Tomas,

Could you please post in the RTOS forum: e2e.ti.com/.../ ? You will get a better answer for the RTOS part of your qeustion.
This section of the e2e deals with Linux SDK.

Sources for linux sdk are located here: http://www.ti.com/tool/PROCESSOR-SDK-AM437X

You need to install them, by running the ti-processor-sdk-linux-am437x-evm-02.00.02.11-Linux-x86-Install.bin

Here is the Linux SDK software developers guide: http://processors.wiki.ti.com/index.php/Processor_SDK_Linux_Software_Developer%E2%80%99s_Guide

Best Regards,
Yordan

0 Yordan Kovachev over 9 years ago in reply to Yordan Kovachev

TI__Guru**** 161600 points

An addition to my post above. PRU sources are located inside the Linux SDK, in example-applications/pru-icss-4.0.2

You can build them by executing the following steps:
cd ~/ti-processor-sdk-linux-am335x-evm-02.00.02.11
make pru-icss_clean
make pru-icss
pru-icss_install

Or follow the steps described in the README file in example-applications/pru-icss-4.0.2

Best Regards,
Yordan

0 Tomas Marek over 9 years ago in reply to Yordan Kovachev

Prodigy 70 points

Hi Yordan,

thank you for the reply. I can post it to RTOS forum, but I am not sure the RTOS guys will know if the PRU FW they use is used also by the Linux driver. I believed the Linux SDK is the right forum because I would like to find which PRU EMAC FW source codes are used by Linux drivers. The information about RTOS SDK was just to notice there are PRU FW source codes in RTOS SDK but I am not sure if the same are used also by the Linux drivers.

Thanks

Best regards

Tomas

0 Tomas Marek over 9 years ago in reply to Tomas Marek

Prodigy 70 points

Hi again,

thanks, the example-applications/pru-icss-4.0.2 inside the Linux SDK is exactly what I am looking for. But I am missing there the EMAC (prueth-fw) FW, I can see PRU_access_const_table, PRU_ARMtoPRU_Interrupt, PRU_Direct_Connect[01], PRU_edmaConfig, PRU_gpioToggle, PRU_Halt, PRU_Hardware_UART, PRU_IEP, PRU_MAC_Multiply_Accum, PRU_PRUtoARM_Interrupt, PRU_RPMsg_Echo_Interrupt[01]_[01], and PRU_RPMsg_Echo_Polling[01]_[01] examples.

But, none of them seems to implement the EMAC (prueth-fw) FW. So, did I overlook something and is one of these examples implementing this FW? If not, where can I found such example with EMAC (prueth-fw) FW?

Thanks

Best regards

Tomas

0 Yordan Kovachev over 9 years ago in reply to Tomas Marek

TI__Guru**** 161600 points

Hi Tomas,

Based on what is available in example-applications/pru-icss-4.0.2, I don't think that the PRU EMAC is utilized. See the sources in the pointed directory.
The module is just enabled in the kernel & the examples-applications are a simple domos, and an exmple of a remoteproc/rpmsg communicaition between arm & pru. Anything beyond that you'll need to develop yourself or use RTOS/Starterware.

Best Regards,
Yordan

0 Tomas Marek over 9 years ago in reply to Yordan Kovachev

Prodigy 70 points

OK, thanks. I am sure the PRU EMAC FW exists since I use it – see above mentioned files am437x-pru0-prueth-fw.elf, am437x-pru1-prueth-fw.elf which can be found here git://git.ti.com/processor-firmware/ti-linux-firmware.git. But I am missing the source codes for this FW. So, these source codes are not available if they are not inside the Linux SDK example-applications/pru-icss-4.0.2?

Thanks

Tomas