PROCESSOR-SDK-AM62X: [AM6231] How to load/boot binary from kernel file system using DFU-USB

Naresh Nakka

Hi Ti ,

in U-boot space , we can able to load /flash the images with the help of dfu-usb by issuing below 2 commands in uboot prompt.

Uboot# setenv dfu_alt_info ${dfu_alt_info_emmc} => this is to enable DFU
Uboot# dfu 0 mmc 0 => select eMMC 0

then after issuing theese 2 commands , we can able to access dfu-usb .

But how to flash /boot the binaries in kernel space ?

if suppose , if i want to load the keywritter binary from kernel prompt what are the commands are required ?

Thanks,

Naresh

over 2 years ago

0 Prashant Shivhare over 2 years ago

TI__Guru* 82731 points

Hi Naresh,

If U-Boot is working for you to load/flash the keywriter binary why there is a need to look for a solution from Linux Kernel.

0 Naresh Nakka over 2 years ago in reply to Prashant Shivhare

Expert 1040 points

Hi Prashanth ,

I totally understood .

But from uboot , i could not able to enable soc vpp for eFuse programming.

Suppose , if there is any chance to make load keywritter binary from kernel then i can enable SOC VPP pin through GPIO .

i am not sure how to enable SOC VPP pin through keywritter binary using board.c file for custom boards

Thanks,

Naresh

0 Prashant Shivhare over 2 years ago in reply to Naresh Nakka

TI__Guru* 82731 points

Hi Naresh,

As I already said here

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1339680/processor-sdk-am62x-am6231-hs-fs-varinant-otp-keywritter-support-for-convert-hs-fs-device-into-secure-device/5110355#5110355

The OTP Keywriter binary cannot be booted by Linux Kernel or anything except the ROM. According to your board schematics, you just need to use the MCU+ SDK drivers to modify the keywriter_setVpp.

Please continue the further discussion related to the OTP Keywriter on the other thread only.

Regards,

Prashant

0 Naresh Nakka over 2 years ago in reply to Prashant Shivhare

Expert 1040 points

Okay sure Prashant.

I will continue further discussions on OTP keywritter thread.

Thank you

0 Prashant Shivhare over 2 years ago in reply to Naresh Nakka

TI__Guru* 82731 points

Following response resolves the issue

e2e.ti.com/.../5127460

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PROCESSOR-SDK-AM62X: [AM6231] How to load/boot binary from kernel file system using DFU-USB