AM2434: SA2UL fails to work on a HS-FS device - error when trying to open UDMA channels

Mark Orkenyi

Part Number: AM2434

Hi,

I have an issue with using the SA2UL on a HS-FS device, however it works with a GP device.

I'm trying to use the provided example in the SDK (crypto_aes_cbc_256_am243x-evm_r5fss0-0_nortos_ti-arm-clang), and I understand this is for a GP device, however I have not found any HS-FS example.

Originally in our project I tried to use SA2UL with the 8.06 SDK, but the same error happens with 9.0.

It fails when it's trying to pair the PSI-L source thread and destination threads in Sciclient_rmPsilPair (line 430)

In the below code, the return value "r" is SystemP_SUCCESS, however the required flag in the response is not set, so it fails.

    r = Sciclient_service(&sciReq, &sciResp);
    if ((r != SystemP_SUCCESS) || ((sciResp.flags & TISCI_MSG_FLAG_ACK) != TISCI_MSG_FLAG_ACK))
    {
        r = SystemP_FAILURE;
    }

I did try flashing the example as it is, and I receive the following error:

[MAIN_Cortex_R5_0_0] [CRYPTO] AES CBC-256 example started ...
ERROR: SA2UL_setupTxChannel:1492: error in Tx Udma_chOpen()
ERROR: SA2UL_dmaInit:1527: error in creating the dma tx channel
ERROR: SA2UL_setupRxChannel:1370: error in Rx-1 Udma_chOpen()
ERROR: SA2UL_setupRxChannel:1410: error in Rx-0 Udma_chOpen()
ERROR: SA2UL_dmaInit:1535: error in creating the dma Rx channel

Is it possible to the SA2UL on a HS-FS device, and if yes, what should we modify in the provided example?

Thanks for you support,

Mark

over 1 year ago

0 Aakash Kedia over 1 year ago

TI__Mastermind 26145 points

Hi Mark Orkenyi,

Yes the example is functional and tested on HS-FS device. Which boot mode are you using ? Can you try post flashing the SBL NULL in xSPI Boot Mode ?

Best Regards,
Aakash

0 Mark Orkenyi over 1 year ago in reply to Aakash Kedia

Prodigy 60 points

Hi Aakash,

We managed to make it work by modifying the udma_ch.c of the UDMA driver in the SDK on line 181:

    if(UDMA_SOK == retVal)
    {
        /* Pair channels */
        retVal = Udma_chPair(chHandleInt);
        if(UDMA_SOK != retVal)
        {
            retVal = Udma_chUnpair(chHandleInt);
            if(UDMA_SOK == retVal)
            {
                retVal = Udma_chPair(chHandleInt);
            }
        }
    }

With this modification the channels gets paired successfully and the SA2UL seems to be working.

Probably you could provide more info on why the UDMA channels needs to be un-paired or what's the underlying issue?

Thanks, Mark

0 Aakash Kedia over 1 year ago in reply to Mark Orkenyi

TI__Mastermind 26145 points

Hi Mark Orkenyi,

Let me raise an internal ticket for the same. Can you share more information on how to replicate the issue you were observing ?

Best Regards,
Aakash

0 Mark Orkenyi over 1 year ago in reply to Aakash Kedia

Prodigy 60 points

Hi,

Very sorry for the late reply, I was not available.

Not sure I can provide more information on how to replicate the issue. I simply used the code from the example on a hs-fs device, without any modifcation.
After changing the udma_ch.c as mentioned above, it is now working as intended.

What other information would you require?

Mark

0 Aakash Kedia over 1 year ago in reply to Mark Orkenyi

TI__Mastermind 26145 points

Hi Mark,

Which boot mode did you try ? Was it OSPI BOOT MODE or DEV BOOT MODE ?

Best Regards,
Aakash

0 Mark Orkenyi over 1 year ago in reply to Aakash Kedia

Prodigy 60 points

Hi Aakash,

We are using the OSPI Boot mode.

Mark

0 Aakash Kedia over 1 year ago in reply to Mark Orkenyi

TI__Mastermind 26145 points

Hi Mark Orkenyi,

I will let internal teams to come up with their verification for this issue.

Best Regards,
Aakash

0 Mark Orkenyi over 1 year ago

Prodigy 60 points

Hi Aakash,

Any update on a verification & longterm solution for this issue?

Mark

0 Aakash Kedia over 1 year ago in reply to Mark Orkenyi

TI__Mastermind 26145 points

Hi Mark Orkenyi,

We were unable to replicate the issue. We need to understand, which exact example was problematic and in which boot mode to root cause this problem.

Best Regards,
Aakash

0 Mark Orkenyi over 1 year ago in reply to Aakash Kedia

Prodigy 60 points

Hi Aakash,

I've already wrote these.

Example is: crypto_aes_cbc_256_am243x-evm_r5fss0-0_nortos_ti-arm-clang
Boot mode is: OSPI

The issue happened on a Sitara HS-FS device, with this example (and also integrating the example contents into our own project), with the latest SDK version.
After modifying udma_ch.c as i mentioned above, the issue is gone. However we don't think this is a long-term fix.

What other info would you need to reproduce? Should I create a video of the issue? Or screenshots?

Mark

0 Aakash Kedia over 1 year ago in reply to Mark Orkenyi

TI__Mastermind 26145 points

Hi Mark Orkenyi,

So you have observed this issue with OOB example - crypto_aes_cbc_256_am243x-evm_r5fss0-0_nortos_ti-arm-clang on an HSFS device ? Let me raise this concern internally

Best Regards,
Aakash

0 Ankur Baranwal over 1 year ago in reply to Aakash Kedia

TI__Mastermind 26205 points

Hi Mark,

We have verified this as part of our 9.1 and this is working for us.

Regards,

Ankur

0 Mark Orkenyi over 1 year ago in reply to Ankur Baranwal

Prodigy 60 points

Hi,

Verified means you have verified the issue, or you have checked the issue, but you are not able to reproduce?

As i mentioned I used 9.0. Is there a fix for this in 9.1 then?

Mark

0 Ankur Baranwal over 1 year ago in reply to Mark Orkenyi

TI__Mastermind 26205 points

Hi Mark,

We have verified by downloading the 9.0 SDK and not able to reproduce the issue. Did you make any changes or by default example is failing for you?

Regards,

Ankur

0 Mark Orkenyi over 1 year ago in reply to Ankur Baranwal

Prodigy 60 points

It was failing for us with the example straight from the sdk 9.0, without any changes.

Anyway, we implemented the workaround mentioned above, and this is not an issue for us anymore, but i'm positive it was not working.

From our side this ticket can be closed.

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AM2434: SA2UL fails to work on a HS-FS device - error when trying to open UDMA channels