MCU-PLUS-SDK-AM243X: Cannot SBL_OSPI boot the hs_fs application image on my custom board.

Part Number: MCU-PLUS-SDK-AM243X
Other Parts Discussed in Thread: LP-AM243, UNIFLASH

Hello, 

I'm experiencing the same symptoms in url below.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1202676/processor-sdk-am64x-cannot-ospi-boot-the-hs_fs-application-image-on-am6442-a53-core

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1214401/am6442-sbl_ospi---------bootloader_parsemulticoreappimage-returns--1

I am developing a custom board with the AM2431ALX (HS-FS).

The built-in SPI flash memory is the S25HL512T, which is exactly the same as the evaluation board LP-AM243.

The initialization was confirmed to have been carried out normally, and the sample images of sbl_ospi_am243x and hello_world_am243x were flashed to flash memory through UART Uniflash, confirming that they were operating normally.

(I'm sure there's no problem here.)

I saved this file as a json file.

Also, I pressed 'automatically configure flash' - Load from JSON button in syscfg tool of sbl_ospi_am243x sample project.

I compared the parameters and confirmed that they were input normally.

Also, syscfg in the sbl_uart_uniflash_am243x sample project also loaded the JSON file in the same way as above.

I built these project without modifying anything. I completed the flash successfully through UART Uniflash, including hello_world_am243x sample image. ([STATUS] SUCCESS !!!)

The contents of the .cfg file used in UART Uniflash are as follows.

---

--flash-writer=custom_built/sbl_uart_uniflash.Release.hs_fs.tiimage

# '--operation=flash-phy-tuning-data' Even if I tried adding it, the result was the same.

--file=custom_built/sbl_ospi.Debug.hs_fs.tiimage --operation=flash --flash-offset=0x0      # Even if I tried "Release", the result was the same.

--file=custom_built/hello_world_am243x-evm_r5fss0-0_nortos_ti-arm-clang.appimage.hs_fs --operation=flash --flash-offset=0x80000      # Even if I tried "Release", the result was the same.

---

However, it showed the same symptoms as the URL that I had above linked.

To be more specific, (Debugged using loop_forever.)

sbl_ospi_am243x example code

ㄴ(main.c : 132) status = Bootloader_parsemultiCoreAppImage

    ㄴ(bootloader.c : 661) status = Bootloader_verifyMulticoreImage

        ㄴ(bootloader.c : 581) authStatus = Bootloader_socAuthImage

            ㄴ(bootloader_soc.c : 1244) status = Sciclient_procBootAuthAndStart

                 ㄴ(sciclient_procboot.c : 267) respParam.flags < This value is 2 when it is operating normally, and this value is 0 after SPI flash memory changes.

I thought it was an authentication problem, so I unchecked the BOOTLOADER-Disable Auth For Application Image from syscfg of the sbl_ospi_am243x project and rebuilt and flahs, and I was able to confirm that it booted normally and Hello world was also output normally.

Is there a way to boot normally without unchecking this?
And when you uncheck this check, what are the problems?

Please help me
Thank you.