Hi Team,
Following the SDK documentation, uboot for DFU was recompiled and the appropriate DFU command was executed.
E:\TI_AM62X\DFU_flash\dfu-util\dfu-util.exe -R -a 0 -D tiboot3.bin E:\TI_AM62X\DFU_flash\dfu-util\dfu-util.exe -R -a 0 -D tispl.bin E:\TI_AM62X\DFU_flash\dfu-util\dfu-util.exe -R -a 1 -D u-boot.img
Now start DFU uboot normally and then proceed to the next command:
setenv dfu_alt_info ${dfu_alt_info_emmc}
dfu 0 mmc 0
After that, theoretically it can proceed to the next step of flashing the flash command to eMMC:
..\dfu-util\dfu-util.exe -a tiboot3.bin.raw -D E:\TI_AM62X\sd_uboot\tiboot3.bin --path "1-11" --device ,0451:* ..\dfu-util\dfu-util.exe -a tispl.bin.raw -D E:\TI_AM62X\sd_uboot\tispl.bin --path "1-11" --device ,0451:* ..\dfu-util\dfu-util.exe -a u-boot.img.raw -D E:\TI_AM62X\sd_uboot\u-boot.img --path "1-11" --device ,0451:* ..\dfu-util\dfu-util.exe -a u-env.raw -D E:\TI_AM62X\sd_uboot\uEnv.txt --path "1-11" --device ,0451:* ..\dfu-util\dfu-util.exe -e --device ,0451:* --path "1-11" --alt 0
EMMC fails to run after flashing (originally eMMC had a burned program), indicating that after eMMC has passed the above steps, the data has indeed been overwritten. And then in uboot cmd, you can see that the MMC part has partitions. For further testing, the customer erase all blocks of MMC. Recompiled uboot for DFU:
uboot_machine_R5=am62x_EVM_R5_usbdfu_defconfig
Uboot compilation of DFU successful. After eMMC is erase and then executing to dfu 0 MMC 0, the following prompt is given:
The reason is that the eMMC is indeed cleared.
Uboot is compiled using the ti-u-boot source code that comes with the SDK09(ti-processor-sdk-linux-am62xx-evm-09.00.00.03-Linux-x86-Install.bin).
The fix mentioned in the Boot Fix is shown in the following figure:
However, the file for uboot that comes with SDK09 is different from here and should be in the latest version of uboot git. Uboot needs to get the latest source code recompile, which means that the DFU feature in uboot of sdk09 is temporarily not working? Could you please help check this case? Thanks.
Best Regards,
Cherry
