TDA4VE-Q1: ospi flash

zhangjun1

Part Number: TDA4VE-Q1

Tool/software:

Hi,

I have some questions about OSPF flash in SBL and would like to consult with experts from TI.

As shown in the figure below, in function SBL_ReadSysfwImage , reading sysfw is obtained through "SBL_SysFwLoad (void *) (* pBuffer), (void *) (ospi_cfg.dataAddr+SBL_OSPI-OFFSET_SYSFW), num-bytes);"? Where is the address data for ospi_cfg.dataAddr provided?

I read ospi_cfg.dataAddr + SBL_OSPI_OFFSET_SYSFW The data at this address did not change. I read ospi_cfg.dataAddr + SBL_OSPI_OFFSET_SYSFW The data at this address did not change. And ospi_cfg.xipEnable = 0.

LOG as follows: and ospi_cfg.xipEnable = 0.

LOG as follows:

111111111111111111 line = 205,ospi_cfg.dataAddr = 90068230.
111111111111111111 ospi_cfg.xipEnable = 0.
111111111111111111 line = 235,ospi_cfg.dataAddr = 90068230.
111111111111111111 line = 238,ospi_cfg.dataAddr = 90068230.
111111111111111111 line = 270,ospi_cfg.dataAddr = 90068230.
111111111111111111 line = 272.

...

9 months ago

0 zhangjun1 9 months ago

Intellectual 270 points

Soc:J721S2

SDK:ti-processor-sdk-rtos-j721s2-evm-10_00_00_05

0 zhangjun1 9 months ago

Intellectual 270 points

May I ask if there are any TI experts who can assist me?

0 Brijesh Jadav 9 months ago in reply to zhangjun1

TI__Guru**** 478595 points

Hi,

Sorry, did not get your question, TIFS address in OSPI is fixed location, isn't it? So this offset won't change on multiple boots..

Regards,

Brijesh

0 zhangjun1 9 months ago in reply to Brijesh Jadav

Intellectual 270 points

Hi,

Thank you very much for your reply.Yes, TIFS is a fixed address and it is stored in flash. My question is: how does the data in flash get to the address ospi_cfg.dataAddr?

0 Brijesh Jadav 9 months ago in reply to zhangjun1

TI__Guru**** 478595 points

Do you mean how it is read into this location? Usually it is just done using memcpy.

Regards,

Brijesh

0 zhangjun1 9 months ago in reply to Brijesh Jadav

Intellectual 270 points

Hi,

Yes, I want to know through what operation the data was read to address ospi_cfg.dataAddr? Can you indicate which function the specific code is implemented in?

0 Brijesh Jadav 9 months ago in reply to zhangjun1

TI__Guru**** 478595 points

Please check SBL_ReadSysfwImage API in sbl_ospi.c file.

Regards,

Brijesh

0 zhangjun1 9 months ago in reply to Brijesh Jadav

Intellectual 270 points

Hi，

I was wondering where the data for the address ospi_cfg.dataAddr comes from?

I only see the ospi_cfg.dataAddr address given to * pBuffer in the SBL_ReadSysfwImage API.
As follows：

 /* Set up ROM to load system firmware */
 *pBuffer = (void *)(ospi_cfg.dataAddr + SBL_OSPI_OFFSET_SYSFW);

0 Brijesh Jadav 9 months ago in reply to zhangjun1

TI__Guru**** 478595 points

Hi,

This comes from macro CSL_MCU_FSS0_DAT_REG1_BASE, in the initialization in ospiInitCfg in packages\ti\drv\spi\soc\j721s2\SPI_soc.c file.

Regards,

Brijesh

0 zhangjun1 9 months ago in reply to Brijesh Jadav

Intellectual 270 points

Hi,

Thank you very much for your reply.
Based on your response, I understand that 'ospi_cfg.dataAddr is assigned by the macro definition CSL_MCU_FSS0_DAT_REG1_BASE'.
I may not have expressed my question clearly earlier, I also want to ask you: ospi_cfg.dataAddr, also known as CSL_MCU_FSS0_DAT_REG1_BASE. How is the data obtained at this address? What operation is used to transfer the data in OSPI flash to the address CSL_MCU_FSS0_DAT_REG1_BASE?

I don't know if I have expressed my problem clearly?Thank you again for your reply.

0 Brijesh Jadav 9 months ago in reply to zhangjun1

TI__Guru**** 478595 points

Hi,

In the OSPI DAC mode, the OSPI region is mapped to this location (CSL_MCU_FSS0_DAT_REG1_BASE). That's how we can access OSPI flash here.

For the details on DAC mode, please refer to OSPI JEDEC specs.

Regards,

Brijesh

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TDA4VE-Q1: ospi flash