AM625-Q1: Mixed bootmode on am625 is having delayed boot

Hi Pawan,

Can you share the boot log with timings enabled on minicom/picocom?

Also, whats the behaviour with SD card as the primary boot media? Are you using the default SDK image? What SDK version are you testing it?

Best Regards,

Suren

Hi Suren,

Unfortunately,We cannot do that , since the first line of U-Boot itself is happening  10 to 11seconds  after power on.

Sdcard boots immediately as it's In primary mode. But we require emmc as secondary one .

We are using SDK of 10.01 with Uboot 2024 and linux kernel 6.6 ,and our custom board can not run on default SDK image.

Kindly do the needful 

Regards 

Pawan 

Hi Pawan,

Pawan S said:

Sdcard boots immediately as it's In primary mode.

Whats the timing you are seeing in the above case? 

Are you seeing the first u-boot log after 10sec in the case of EMMC? 

Are you using SPL or SBL boot flow to boot linux?

Best Regards,

Suren

Hi Suren,
For Sdcard its instant boot,
for Secondary Emmc, 10-11 seconds

Suren Porwar said:

Are you seeing the first u-boot log after 10sec in the case of EMMC?

yes

We are using SPL, 
below is our initial log for reference

U-Boot SPL 2024.04-ti-ged80f7ff26db (May 16 2025 - 14:26:16 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.7--v11.00.07 (Fancy Rat)')
SPL initial stack usage: 13392 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE: BL31: v2.12.0(release):11.00.12-dirty
NOTICE: BL31: Built : 14:26:16, May 16 2025

U-Boot SPL 2024.04-ti-ged80f7ff26db (May 16 2025 - 14:26:16 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.7--v11.00.07 (Fancy Rat)')
SPL initial stack usage: 1904 bytes



Regards,
Pawan

Hi Pawan,

Can you let me know how did you flash the u-boot images to EMMC?

Are you following the instructions provided here.

Best Regards,

Suren

Hi Suren,

We flashed the emmc by Sdcard with wic bmapped to /dec/mmcblk0 directly,

Which creates proper p1 partitions with required boot files (tiboot3,tispl,Uboot)

But after removing sdcard ,we get 10 seconds delay to boot

We even tried flashing with the below procedure , but result were same.

Note: for the below procedure we consciously copied emmc boot files to sdcard folder and flashed to boot0, hence proper images were flashed, even after that same result in this mixed bootmode FYI

Suren Porwar said:

provided here

Regards 

Pawan

Hi Pawan,

Sent you an email. Please respond back.

Best Regards,

Suren