TDA4VE-Q1: rblExecutionTime

zhangjun1

Intellectual 270 points

Part Number: TDA4VE-Q1

Tool/software:

Hi，

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

Soc:J721S2

Flash:MT35XU512ABA1G12

I printed the rblExecutionTime in the following figure as 13965585 in the SBL main function, according to the calculation method in the sbl_mcu_0_boot_perf_benchmark.c routine: Time = rblExecutionTime/convertToMilli; (convertToMilli = 250,000)

It is calculated that：time = 13965585/250000；time = 55ms.

However, I can see the following figure in 6.2.J721S2 SBL 6.2.1. Introduction in PDK document:

RBL Execution time : 8.052ms
The two RBL execution times described above differ too much, may I ask TI experts know why this is?

my log as follows:

SBL Revision: 01.00.10.01 (Dec 10 2024 - 19:22:55)
rblExecutionTime = 13965585 time: 55 ms

over 1 year ago

0 Karthikeyan S over 1 year ago

TI__Genius 15920 points

Hi,

zhangjun1 said:
However, I can see the following figure in 6.2.J721S2 SBL 6.2.1. Introduction in PDK document:

Could you please tell me if you are using a custom board or TI EVM?

Regards,

Karthik

0 zhangjun1 over 1 year ago in reply to Karthikeyan S

Intellectual 270 points

Hi,

I am using custom board.

0 zhangjun1 over 1 year ago

Intellectual 270 points

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

0 Karthikeyan S over 1 year ago in reply to zhangjun1

TI__Genius 15920 points

Hi,

zhangjun1 said:
RBL Execution time : 8.052ms

Does this number come from the TI EVM test? If so, you can use your custom board to do the same test rather than figuring out RBL Execution time by manually.

Regards,

Karthik

0 zhangjun1 over 1 year ago in reply to Karthikeyan S

Intellectual 270 points

Hi，

‘RBL Execution time : 8.052ms‘This log is sourced from TI's documentation.
My question is that the time on TI's document does not match what I actually executed. What could be the reason?

0 zhangjun1 over 1 year ago in reply to zhangjun1

Intellectual 270 points

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

0 Karthikeyan S over 1 year ago in reply to zhangjun1

TI__Genius 15920 points

Hi,

Boot media determines execution time. Would you please use OSPI Boot Mode to test the sbl_boot_perf_test example?

Regards,

Karthik

0 zhangjun1 over 1 year ago in reply to Karthikeyan S

Intellectual 270 points

Hi，

Below is a screenshot of the log of running sbl_boot_perf_test example via OSPI Boot Mode.

RBL Execution time is 15.803ms

...

0 Karthikeyan S over 1 year ago in reply to zhangjun1

TI__Genius 15920 points

Hi,

zhangjun1 said:
Below is a screenshot of the log of running sbl_boot_perf_test example via OSPI Boot Mode.

When we test with TI EVM, which has a Cypress flash, we are able to obtain 9.167 ms. The Cypress Hyper Flash is specifically designed for low-latency booting,So there is chances which makes it faster than the Micron MT35XU512ABA1G12 NOR flash.

sbl_boot_perf_test_using_ospi_BootMode.zip

Regards,

Karthik

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TDA4VE-Q1: rblExecutionTime