TDA4VEN-Q1: sbl quick start display avm

Hi Bing,

bing zhu said:

the app is already 32+MB and my nor flash only uses 32M

Could you please let me know the app you're referred and how long it will take for it to load?

Regards,

Karthik

Hi Karthik,

[2025/2/6 13:48:14.694] DMSC Firmware Version 10.0.8--v10.00.08 (Fiery Fox)
[2025/2/6 13:48:14.697] DMSC Firmware revision 0xa
[2025/2/6 13:48:14.698] DMSC ABI revision 4.0
[2025/2/6 13:48:14.698] 
[2025/2/6 13:48:18.926] [BOOTLOADER_PROFILE] Boot Media       : SD Card 
[2025/2/6 13:48:18.930] [BOOTLOADER_PROFILE] Boot Image Size  : 32087 KB 
[2025/2/6 13:48:18.936] [BOOTLOADER_PROFILE] Cores present    : 
[2025/2/6 13:48:18.937] mcu-r5f0-0
[2025/2/6 13:48:18.937] wkup-r5f0-0
[2025/2/6 13:48:18.939] main-r5f0-0
[2025/2/6 13:48:18.939] c75ss0
[2025/2/6 13:48:18.939] c75ss1
[2025/2/6 13:48:18.939] a530-0
[2025/2/6 13:48:18.945] [BOOTLOADER PROFILE] System_init                      :      24838us 
[2025/2/6 13:48:18.952] [BOOTLOADER PROFILE] Drivers_open                     :      16377us 
[2025/2/6 13:48:18.958] [BOOTLOADER PROFILE] Board_driversOpen                :          0us 
[2025/2/6 13:48:18.969] [BOOTLOADER PROFILE] Sciclient Get Version            :       9769us 
[2025/2/6 13:48:18.971] [BOOTLOADER_PROFILE] SBL Total Time Taken             :      50986us 
[2025/2/6 13:48:18.972] 
[2025/2/6 13:48:18.976] Image loading done, switching to application ...
[2025/2/6 13:48:18.980] Starting linux and RTOS/Baremetal applications
[2025/2/6 13:48:19.003] Sciserver Testapp Built On: Oct 23 2024 14:48:18
[2025/2/6 13:48:19.008] Sciserver Version: v2024.07.0.0REL.MCUSDK.10.00.00.13+
[2025/2/6 13:48:19.011] RM_PM_HAL Version: v10.00.07
[2025/2/6 13:48:19.014] Starting Sciserver..... PASSED
[2025/2/6 13:48:19.021] [IPC RPMSG ECHO] Version: REL.MCUSDK.09.00.00.16 (Oct 21 2024 10:17:13):  
[2025/2/6 13:48:23.355] [IPC RPMSG ECHO] Remote Core waiting for messages at end point 13 ... !!!
[2025/2/6 13:48:23.361] [IPC RPMSG ECHO] Remote Core waiting for messages at end point 14 ... !!!

As you can see from the startup log above loading the app took 4.2s, I think it would be best if it didn't take more than 1s to load the app.

Best Regards,

Bing

Hi Bing,

SBL is just the boot loader, it just loads the firmwares after some initialization. Firmware needs to be optimized for the early display. We have an FAQ which explains different techniques to optimize the bootflow for TDA4VM. I think many of these techniques can still be applicable here also. So can you please refer to below link?

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1110814/faq-tda4vm-how-to-optimize-surround-view-use-case-to-2-3-seconds-from-power-on

Regards,

Brijesh

Hi Brijesh，

This link has been referenced before and implemented on tda4vl and was able to save some time. The current method is still too slow for us to start.

Previously the boot method was sbl->app->ubootspl->uboot->kernel, so the app firmware was small enough to burn the app into the nor flash. Now it is sbl->app->kernel, so the app firmware is bigger and can't be burned into the nor flash.

Is there any way to split the app into two parts, one in nor flash and one in eMMC. Or put the app firmware all in eMMC, but speed up the app loading.

Best Regards,

Bing

Hi Bing,

Sorry, did not get your boot flow. In both the cases, app (i guess this means firmwares), are loaded by SBL, so is the change in "app"'s  size? 

and when you want to store firmwares in eMMC, you want again SBL to load these firmwares? 

SBL does support eMMC and so it can read it from the raw/uda partition, but it may not be as fast as nor flash.  

Regards,

Brijesh  

Hi Brijesh，

Brijesh Jadav said:

SBL does support eMMC and so it can read it from the raw/uda partition

I refer to that link J722S MCU+ SDK: SBL EMMC HLOS as booting from boot0, is there an example of a reference from the uda partition?

Best Regards,

Bing

Hi Bing,

uda partition is not supported in the MCU+ SDK. Confirmed with the team.

Regards,

Brijesh

Hi Brijesh,

Can you please provide the patch for uda partition boot? Because my boot0 partition is also only 32M not enough.

Best Regards,

Bing

Hi Bing,

unfortunately, no, we dont currently have patch to enable this feature. I can raise requirement, but not sure when this can be available. 

Regards,

Brijesh

Hi Brijesh,

Thank you. I'll be waiting for your good news.

Best Regards,

Bing

Hi Bing,

I have raised this requirement, but not sure when it would be implemented. 

https://jira.itg.ti.com/browse/JACINTOREQ-8521

Regards,

Brijesh

Hi Brijesh,

Brijesh Jadav said:

jira.itg.ti.com/.../quote]

Thank you. I can't access the link you gave

Best Regards,

Bing

Hi Bing,

This is internal jira link, that i have put here for the reference. 

Regards,

Brijesh