AM2434: Impact of differences in API for SCI between versions of MCU+ SDK

Daisuke Maeda

Guru 20285 points

Part Number: AM2434

Our customer is concerned about the impact of differences in API for SCI between versions of MCU+ SDK.

The definitions in tisci_devices.h between 08.04.00.17 and 08.05.00.24 are different as follows:

C:\ti\mcu_plus_sdk_am243x_08_04_00_17\source\drivers\sciclient\include\tisci\am64x_am243x\tisci_devices.h
software-dl.ti.com/.../group__tisci__devices.html

C:\ti\mcu_plus_sdk_am243x_08_05_00_24\source\drivers\sciclient\include\tisci\am64x_am243x\tisci_devices.h
software-dl.ti.com/.../group__tisci__devices.html

+ #define TISCI_DEV_MCU_M4FSS0_CBASS_0 8

- #define TISCI_DEV_DMASS0_PSILCFG_0 31
- #define TISCI_DEV_DMASS0_PSILSS_0 32

- #define TISCI_DEV_MSRAM_256K0 108
- #define TISCI_DEV_MSRAM_256K1 109
- #define TISCI_DEV_MSRAM_256K2 110
- #define TISCI_DEV_MSRAM_256K3 111
- #define TISCI_DEV_MSRAM_256K4 112
- #define TISCI_DEV_MSRAM_256K5 113

- #define TISCI_DEV_POSTDIV1_16FFT1 115
- #define TISCI_DEV_POSTDIV4_16FF0 116
- #define TISCI_DEV_POSTDIV4_16FF2 117
- #define TISCI_DEV_PSRAMECC0 118

Why were the definitions changed?

Is there any impact from removed definitions?

Are the resources corresponding to the removed definitions not supported for AM243x?

Best regards,

Daisuke

over 2 years ago

0 Aakash Kedia over 2 years ago

TI__Mastermind 26145 points

Hi Daisuke-san,

Let me get back to you on this with more details.

Best Regards,
Aakash

0 Daisuke Maeda over 2 years ago in reply to Aakash Kedia

Guru 20285 points

Hi Aakash-san,

Thank you for your reply.

Please give me an answer as soon as possible. Your prompt reply would be appreciated.

Best regards,

Daisuke

0 Aakash Kedia over 2 years ago in reply to Daisuke Maeda

TI__Mastermind 26145 points

Hi Daisuke-san,

The change you see in device ID was part of SYSFW release v08.03.xx and later. The device IDs removed are usually skipped from being exposed. Were you using these device IDs ?

Best Regards,
Aakash

0 Daisuke Maeda over 2 years ago in reply to Aakash Kedia

Guru 20285 points

Hi Aakash-san,

Thank you for your reply.

Our customer uses the following IDs with the previous SDK (08.04).

#define TISCI_DEV_DMASS0_PSILCFG_0 31
#define TISCI_DEV_DMASS0_PSILSS_0 32

Best regards,

Daisuke

0 Aakash Kedia over 2 years ago in reply to Daisuke Maeda

TI__Mastermind 26145 points

Hi Daisuke-san,

Can you share the use of these IDs in customer's code ? Maybe we can suggest the better option.

Best Regards,
Aakash

0 Daisuke Maeda over 2 years ago in reply to Aakash Kedia

Guru 20285 points

Hi Aakash-san,

Thank you for your reply. Sorry for the late reply.

Aakash Kedia said:
Can you share the use of these IDs in customer's code ? Maybe we can suggest the better option.

I have requested our customer to share the use of the IDs in customer's code.

The IDs seem to be used to configure PSI-L (access the DMASS_PSILCFG_0 or DMASS_PSILSS_0 Registers).

Must SYSFW be used via API with the IDs to configure PSI-L?

Why were the IDs removed? Is it because they are no longer needed?

Best regards,

Daisuke

0 Aakash Kedia over 2 years ago in reply to Daisuke Maeda

TI__Mastermind 26145 points

Hi Daisuke Maeda,

It was predicted to be a very small security problem to expose these IDs in public domain.

Daisuke Maeda said:
Must SYSFW be used via API with the IDs to configure PSI-L?

We are waiting for the response from the customer to understand their exact use case so we can provide a better alternative.

Best Regards,
Aakash

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AM2434: Impact of differences in API for SCI between versions of MCU+ SDK