TDA4VM: How to signed boot image ?

I have read this thread before.

my question is

1. "How to signed u-boot.img with TI dummy key".

2. "How to signed kernel.img with TI dummy key".

it could be a command is PDK.

Thanks

Gibbs

Hi Gibbs,

Are you relying on SBL (PDK bootloader) or SPL (Linux U-Boot/SPL)? 

regards

Suman

Hi, Suman

Both, 

SBL for TI-Keywriter, SD Card boot failure, because I do not see any key writing message from MCU R5 uart 0 or uart 1.

reference this quide

https://www.ti.com/lit/an/sprad04/sprad04.pdf?ts=1650605584641&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTDA4VM%253FkeyMatch%253D%2526tisearch%253Dsearch-everything%2526usecase%253Dpartmatches

so, we can assume key writing failure, and I try to swap SPL SD-Card boot (Linux/u-boot),

 https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1061584/faq-tda4vm-hs-building-booting-on-hs-devices-on-latest-linux-sdk

It still fail boot, no message dump from main uart or mcu uart.

Gibbs

Hi Gibbs,

Can you clarify if you are using a HS-SE TIDK (High Security-Security Enforced TI Dummy Key) sample or a HS-FS (High Security-Field Securable)?

If it is the former, the TI keys are also already fused into the Customer Key area, and you don't need to use the KeyWriter. If latter, you need to first ensure the keys are programmed properly using the KeyWriter binary, before you can try to use regular boot binaries (either SBL or SPL).

regards

Suman

Hi, Suman 

Our TDA4 chip part number is "XJ721E5BALF (HS-FS)", it should be blank customer keys.

but, I am not sure what's mean as below?

>> before you can try to use regular boot binaries (either SBL or SPL).

Does it mean HS-FS can boot without stuff key in e-fuse?

Does regular boot files mean no sign. SBL/SPL?

Thanks

Gibbs