AM572x IPUMM firmware fails

Hi Ramprasad ,
I have flashed the SD with prebuilt binaries from ti-processor-sdk-linux-am57xx-evm-03.01.00.06. So by default these are the firmwares in /lib/firmware.

drwxr-xr-x 6 root root 4096 Oct 3 21:08 .
drwxr-xr-x 9 root root 4096 Oct 3 2016 ..
lrwxrwxrwx 1 root root 49 Oct 4 2016 am57xx-pru1_0-fw -> /lib/firmware/pru/PRU_RPMsg_Echo_Interrupt1_0.out
lrwxrwxrwx 1 root root 49 Oct 4 2016 am57xx-pru1_1-fw -> /lib/firmware/pru/PRU_RPMsg_Echo_Interrupt1_1.out
lrwxrwxrwx 1 root root 49 Oct 4 2016 am57xx-pru2_0-fw -> /lib/firmware/pru/PRU_RPMsg_Echo_Interrupt2_0.out
lrwxrwxrwx 1 root root 49 Oct 4 2016 am57xx-pru2_1-fw -> /lib/firmware/pru/PRU_RPMsg_Echo_Interrupt2_1.out
lrwxrwxrwx 1 root root 46 Oct 4 2016 dra7-dsp1-fw.xe66 -> /lib/firmware/dra7-dsp1-fw.xe66.opencl-monitor
-rw-r--r-- 1 root root 863728 Oct 4 2016 dra7-dsp1-fw.xe66.dspdce-fw
-rw-r--r-- 1 root root 22037092 Oct 4 2016 dra7-dsp1-fw.xe66.opencl-monitor
lrwxrwxrwx 1 root root 46 Oct 4 2016 dra7-dsp2-fw.xe66 -> /lib/firmware/dra7-dsp2-fw.xe66.opencl-monitor
-rw-r--r-- 1 root root 22037092 Oct 4 2016 dra7-dsp2-fw.xe66.opencl-monitor
lrwxrwxrwx 1 root root 55 Oct 4 2016 dra7-ipu1-fw.xem4 -> ipc/ti_platforms_evmDRA7XX_ipu1/test_omx_ipu1_vayu.xem4
lrwxrwxrwx 1 root root 40 Oct 3 21:08 dra7-ipu2-fw.xem4 -> /lib/firmware/dra7-ipu2-fw.xem4.ipumm-fw
-rw-r--r-- 1 root root 3480776 Dec 13 2016 dra7-ipu2-fw.xem4.ipumm-fw
-rw-r--r-- 1 root root 3497308 Oct 3 21:17 dra7-ipu2-fw.xem4.ipumm-fw_old
-rw-r--r-- 1 root root 568225 Oct 4 2016 dra7-ipu2-fw.xem4.map
drwxr-xr-x 6 root root 4096 Oct 4 2016 ipc
drwxr-xr-x 2 root root 4096 Oct 4 2016 pru
drwxr-xr-x 2 root root 4096 Oct 4 2016 ti-connectivity
drwxr-xr-x 2 root root 4096 Oct 3 2016 ti-pruss
-rw-r--r-- 1 root root 4002 Oct 3 2016 vpdma-1b8.bin

After rebuilding i copied the dra7-ipu2-fw.xem4 to /lib/firmware and then replaced it to dra7-ipu2-fw.xem4.ipumm-fw as dra7-ipu2-fw.xem4 is a soft link and have also executed sync command.

Regards,
Sriraksha

You just need to copy dra7-ipu2-fw.xem4 to /lib/firmware and sync
No need to do softlink

The size of dra7-ipu2-fw.xem4.ipumm-fw will show the size of copied xem4

Hi Margarita,

I have made some changes in dce.c so when I build the firmware using MACHINE=am57xx-evm bitbake --force -c compile ipumm-fw and MACHINE=am57xx-evm bitbake , i dint face any problem but my dce.c was not build. So I am trying to rebuild the ipumm separately using the link mentioned above. And I have also followed the Changing the remotecore binary at runtime chapter from the link.

Regards,
Sriraksha

Hi Ramprasad,

I will do the same. I also wanted to know how to get logs from dce which is present in ipumm-fw?

Regards,
Sriraksha

Thanks Ramprasad. It worked for us.

Could you please tell us if there is any way to send messages from one IPU to another IPU without involving the Host processor A15 on AM57x?

Regards,
Karthick

Hi Karthick,
IPC mechanisms MessageQ, Notify, SharedRegion etc are supported for communication between processors. I am not sure if there are examples.
If you have access to DVR-RDK, IPNC-RDK, refer these how IPC is used here. That can give you a hint.

Thanks Ramprasad. We just wanted to make sure that the communication between IPU is feasible without the involvement of the host processor similar to the way we do in IPNC RDK and DVR RDK.

Basically we don't want to run the multimedia pipeline with Gstreamer. We would like to have the multimedia pipeline similar to what we have in IPNC/DVR RDK. I hope such framework is currently not available in Processor SDK for AM57x. Please let us know if we have such a framework on Processor SDK for AM57x.

Regards, Karthick

Processor SDK for AM57x won't support this. BIOS SDK should support this but not sure if such SDK exists for AM5x

Thanks Ramprasad for your reply.

I am assuming this use case is with IPU/DSP running TI RTOS communicating with each other through IPC.
IPC packages included in Processor SDK RTOS for AM57x should cover this.
Here are some pages of interest.
processors.wiki.ti.com/.../AM572x
processors.wiki.ti.com/.../Processor_SDK_IPC_Quick_Start_Guide
processors.wiki.ti.com/.../Processor_SDK_RTOS_Setup_CCS

Thank you, ramprasad.it worked for us.

I am having another query which is as follows:

When am trying to load symbols on IPU2 core using CCStudio, it is not loaded properly. The steps I followed are as follows:

target $ cd /sys/bus/platform/drivers/omap-rproc/
target $ echo 55020000.ipu > unbind
target $ cp /home/root/new-binary.xem4 /lib/firmware/dra7-ipu2-fw.xem4
target $ echo 55020000.ipu > bind

In CCStudio,
As host is already connected ,i connect to ipu2 and then load symbols from the same updated xem4.
when i check address of few functions in disassembly window,it seems like symbols are not loaded properly. 

So i would like to know the correct procedure to load symbols on IPU2 core.

Regards,
Sriraksha 

Hi Ramprasad,

If we follow the below steps, will A15 load the IPU2 firmware?

target $ cd /sys/bus/platform/drivers/omap-rproc/
target $ echo 55020000.ipu > unbind
target $ cp /home/root/new-binary.xem4 /lib/firmware/dra7-ipu2-fw.xem4
target $ echo 55020000.ipu > bind

Often we get "CPU is held in reset" error message. Do you have any idea?
Could you please explain what that unbind and bind actually do?

Thanks & Regards, Karthick

Ok. Thanks for your reply.

We will try this and update you.

Thank you ramprasad, it worked for us.

I have another query when i execute this i get -

root@am57xx-evm:~# omapconf write 0x4AE06700 0x3FF0F07
omapconf: powerdm_deinit(): cpu not supported!!!
omapconf: clockdm_deinit(): cpu not supported!!!

what are these 0x4AE06700 and 0x3FF0F07 addresses??

Regards,
Sriraksha

omapconf is writing to a register to bring IPU2 from low power state.
First execute omapconf read 0x4AE06700
to get the default settings.

cpu not supported message is not an issue

thank you ramprasad, omapconf worked for us.

hi Ramprasad,

I would also like to know how to bring DSP1 from low power state?

Regards,
Sriraksha

hi ramprasad,
After loading symbols to IPU2 core in ccs console i get
Cortex_M4_IPU2_C0: GEL Output: Core Reset has occurred.
can i know why there is core reset?

Hi Ramprasad,

I also want to how to run IPU2 standalone ie without running a GStreamer pipeline and DSP1 standalone without running copycodectest application on AM57xx.

Regards,

Sriraksha Nayak

Hi Sriraksha,
I didn't get your question. What do you mean by stand-alone here?

hi Ramprasad,

I mean after loading IPUMM firmware, if I want to verify it how do i do that? ie I don't want IPC communication with other cores nor verify it through a gstreamer pipeline. Similarly for DSPDCE where u run copycodectest to verify it.Are there any other ways to verify it without communicating with other cores?

and also if I trying to load symbols to IPU2 core in ccs console everytime I get
Cortex_M4_IPU2_C0: GEL Output: Core Reset has occurred.
can i know why there is core reset?

Regards,
Sriraksha

Hi Ramprasad,

Any update on how to verify IPU2 through command line on AM57xx without using gstreamer pipeline?

Regards,
Sriraksha

It should be possible to invoke CE APIs from dce.c itself.

What you can try is to call create, control and process from IPU2 itslef by initializing params and buffers(allocate and initialize)  in dce.c

Refer how it is done for version_buffer.

I didn't get what are trying with this approcach.

Hi Ramprasad,

As all the IPC communication is happening between different cores(IPU, DSP) through A15. Our goal is to write a transcoding pipeline, at present it can be done by using Gstreamer fw, but the inter-processor communication is happening by interacting with a host(A15), but our interest is to avoid communication with a host and also not to use the GStreamer framework. Initial communication via host is known but as per our understanding after the initial setup, inter-processor communication between the cores is via Host so if we have to avoid that How should we go about it?

In order to do this, we are also trying to load IPU2 and DSP through the command line, we need your help to get the pipeline in working condition.

Regards,
Sriraksha

hi Ramprasad,

I would like to know whether you are talking about version buffer which is present as string buffer in dce.c or something else? and videnc2 and viddec3 create,control and process calls are present so which one should i call ?. Could you explain this in detail..and also how to verify it in command line after making the changes?

Regards,
Sriraksha

Yes, vesion_buffer in dce.c
What I am recommending is in dce.c create a dummy function which calls engine_open-->codec_create--->codec_delete-->engine_close.
See if this works.
You can allocate Params structure for codec_create the same way as version_buffer

Refer few examples in packages/ti/ipc/tests/ of ipc package.
There are few examples of messageq between cores.
You can try using the xem4 generated in this package as dra7-ipu2-fw.xem4