TDA4VM: How to check keywrite chip status without WAKEUP UART.

youngwoo lee

Intellectual 560 points

Part Number: TDA4VM

expert.

I wrote custom key into HSFS so I made HSSE with custom key.

I'd like to know HSSE chip's status without WAKEUP UART console.

Could you tell me about another way to check HSSE chip's status?

for example if I try to write custom key again, print out "custom key was written in this chip" in MCU UART console.

Now I can't know HSSE chip's status. I can read chip's status using WAKEUP UART only.

-----------------------
SoC ID Header Info:
-----------------------
NumBlocks : [2]
-----------------------
SoC ID Public ROM Info:
-----------------------
SubBlockId : 1
SubBlockSize : 26
DeviceName : j7es
DeviceType : HSSE
DMSC ROM Version : [0, 1, 1, 1]
R5 ROM Version : [0, 1, 1, 1]
-----------------------
SoC ID Secure ROM Info:
-----------------------
Sec SubBlockId : 2
Sec SubBlockSize : 166
Sec Prime : 0
Sec Key Revision : 1
Sec Key Count : 1

Sec TI MPK Hash : xxxx

Sec Cust MPK Hash : xxxx

Sec Unique ID : xxxx

Thank you.

over 2 years ago

0 Diwakar Dhyani over 2 years ago

TI__Guru 57065 points

You can use a dfu mode to get the device type

dfu-util -a SocId -U socid.bin

and parse the bin using parser script

./parse_soc_id.py --binary socid.bin

Regards
Diwkaar

0 youngwoo lee over 2 years ago in reply to Diwakar Dhyani

Intellectual 560 points

We can use only SD mode or OSPI mode in mass production process.

I want to know keywrite is well after keywriging without UART boot mode.

If I modify keywrite app code, is it possible to print out message that keywriting is done?

Thank you.

0 Diwakar Dhyani over 2 years ago in reply to youngwoo lee

TI__Guru 57065 points

In normal flow once you use the keywriter tool to write the values to the efuses you will get the pass and failure logs in the MCU UART as well .

After writing the keys into the efuses to see if the HS-FS device got converted to HS-SE you can boot any HS-SE images on the device signed with the proper keys.

Regards

Diwakar

0 youngwoo lee over 2 years ago in reply to Diwakar Dhyani

Intellectual 560 points

Yes, I know this process.

Can you tell me about a registor address that I can check HS-SE status in the SBl boot image?

Thank you.

0 Diwakar Dhyani over 2 years ago in reply to youngwoo lee

TI__Guru 57065 points

In SBL you can read K3_SEC_MGR_SYS_STATUS to get the device type Linux uses this register to get the detail of device type

in linux SDK see file <linux>/arch/arm/mach-k3/common.c for function get_device_type()

Regards
Diwakar

0 youngwoo lee over 2 years ago in reply to Diwakar Dhyani

Intellectual 560 points

I'm using QNX, SDK7_1.

I can't find "K3_SEC_MGR_SYS_STATUS" and "get_device_type()".

In QNX How can I use this function?

Thank you.

0 Diwakar Dhyani over 2 years ago in reply to youngwoo lee

TI__Guru 57065 points

In QNX also you can refer to the Linux implementation and do the same in QNX

Regards
Diwakar

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TDA4VM: How to check keywrite chip status without WAKEUP UART.