SK-AM62B-P1: AM62x

Hi, 

You can set the U-boot env variables in uEnv.txt file.

This file is present in boot partition of you eMMC/SD card

Regards,
Aparna

Hi Aparna

    How aboutI define the value of mmcdev in the following path/file so that I don't have to set it before booting?

      board-support/u-boot-build/a53/include/generated/env.txt

Thanks

Oliver

Hi, 

You can make changes in the env file in U-boot source code. 
An example code for AM62A is provided below. Please make the same change in relevant AM62x files.

--- a/board/ti/am62ax/am62ax.env
+++ b/board/ti/am62ax/am62ax.env
@@ -17,8 +17,8 @@ args_all=setenv optargs ${optargs} earlycon=ns16550a,mmio32,0x02800000
run_kern=booti ${loadaddr} ${rd_spec} ${fdtaddr}
boot=mmc
-mmcdev=1
-bootpart=1:2
+mmcdev=0
+bootpart=0:1
bootdir=/boot
rd_spec=-
rproc_fw_binaries= 0 /lib/firmware/am62a-mcu-r5f0_0-fw 1 /lib/firmware/am62a-c71_0-fw

Regards,
Aparna

HI Aparna Patra

"Can I set the environment variable and execute the command during the code compilation, like setenv dfu_alt_info ${dfu_alt_info_emmc}; dfu 0 mmc 0?"

Hi,

When do you need to execute these commands?

You can either add it to your U-boot source code, or execute at the U-boot prompt.

Steps on how to flash eMMC using DFU: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1127618/faq-sk-am62-how-to-flash-emmc-using-usb-dfu-on-am62x-sk-e2

Please refer to the following guide which discusses DFU based flash writer tool automating the flashing procedure: https://software-dl.ti.com/processor-sdk-linux/esd/AM62AX/09_02_00/exports/docs/linux/Foundational_Components/Tools/Flash_via_DFU.html

Regards,
Aparna

HI Aparna

  I d modified this file,but after burning in EMMC DFU mode still showing mmcdev=1
-bootpart=1:2

 I don;t know why

--ti-am62xx-sdk/board-support/ti-u-boot-2023.04+gitAUTOINC+f9b966c674/board/ti/am62x/am62x.env 

Thanks

Hi,

Are the U-boot binaries correctly built and replaced after you change in u-boot source code?

Regards,
Aparna