TDA4VM: SD flash EMMC

Hi Barry,

We already had a regress discussion on the booting from emmc did that not helped you?

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1351993/tda4vm-dfu-rootfs/5201907#5201907

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1346579/tda4vm-dfu-util/5158960#5158960

Above question are similar to what you have asked before .

I would suggest you to go through these older thread.

Regards
Diwakar

Hi Diwakar,

Thanks for your reply, it works fine when we use DFU.

But now we only have a serial port and no typec to use, so we boot from the SD card and then upgrade the EMMC.

After following this document, we switched to boot from emmc but nothing was printed:https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-jacinto7/latest/exports/docs/linux/How_to_Guides/Target/How_to_flash_emmc_device.html?highlight=mksdboot%20sh

What did we miss? Can you please send us a complete guide to upgrade EMMC after booting from SD card (like document or thread)? 

Thanks

Hi Diwakar,

Sorry for not solving my problem.

Our upgrade steps are:

1. Boot from sd card.

2. Execute the script for SD partition to partition EMMC (boot + rootfs), and then copy the contents of SD card boot and rootfs partitions accordingly;

We found that the boot partition created at this time is a partition created in EMMC UDA.

How to boot from the newly created boot partition of EMMC? What did we miss by upgrading this way?

Can you give a complete step-by-step guide?  thanks

Hi Barry,

These are the steps to be followed,

1. Boot from SD card.

2. Execute the mksdboot.sh script to partition EMMC (boot + rootfs), and then copy the contents of SD card boot and rootfs partitions accordingly.

3. Poweroff

4. Reboot

5. Go upto UBOOT and set the following bootparams:

6. mmc partconf 0 1 7 1

7. mmc bootbus 0 2 0 0

8. Poweroff

9. Change the boot switch to the following configuration :

SW8[1:8] : 1000_0000

SW9[1:8] : 0000_0000

10: Poweron the board