Run program from xTc with switched-on OTP security module

[ffomich]

Hi,
I burned OTP of my XE216-512-TQ128 based board with command

Code: Select all

xburn --target-file my_target.xn --lock my_keys.dat --serial-number 0002 --mac-address 00:22:97:80:03:30 --mac-address 00:22:97:80:03:31 --enable-jtag --disable-master-lock

Then I downloaded encrypted factory + update firmware images to FLASH.

Code: Select all

xflash --factory %1 0x10000 --loader loader.xc --boot-partition-size 0x40000 --target-file my_target.xn --upgrade 1 %2 --key my_keys.dat -o flash_image.bin --noinq

xflash --target-file my_target.xn --write-all flash_image.bin

My board powered up correctly.

I try to start my program from xTIMEcomposer using "Run" button but it fails with error:

Code: Select all

xrun: First stage multi-node boot failed, please check XN file and XMOS link connectivity

My program starts correctly from xTIMEcomposer only if FLASH memory is empty (erased).

Is it normal behavior?

[ffomich]

I setup new empty QSPI FLASH chip on my board.

As I mentioned in previous post OTP memory has data:

Code: Select all

>xburn --target-file my_target.xn --lock my_keys.dat --serial-number 0002 --mac-address 00:22:97:80:03:30 --mac-address 00:22:97:80:03:31 --enable-jtag --disable-master-lock

I can run my program from xTc successfully.

After that I create FLASH image and download it in FLASH:

Code: Select all

>xflash --factory factory_fw.xe 0x10000 --loader loader.xc --boot-partition-size 0x40000 --target-file my_target.xn --upgrade 1 upgrade_fw.xe --key my_keys.dat -o flash_image.bin --noinq

>xflash --target-file my_target.xn --write-all flash_image.bin

After that board starts after power up correctly.

But all these commands fails:
1. Rewrite FLASH image

Code: Select all

>xflash --target-file my_target.xn --write-all flash_image.bin
Error: F03075 Failed to correctly execute flash writing app.

2. Read FLASH memory

Code: Select all

>xflash --target-file "my_target.xn"  --read-all -o flash_data.txt"
xrun: First stage multi-node boot failed, please check XN file and Xmos link con
nectivity
Error: F03075 Failed to correctly execute flash reading app.

3. Erase FLASH memory

Code: Select all

>xflash --target-file "my_target.xn" --erase-all"
xrun: Program received signal ET_ILLEGAL_RESOURCE, Resource exception.
      [Switching to tile[0] core[2]]
      0x000405ec in __lock_recursive_acquire ()

Error: F03075 Failed to correctly execute flash erasing app.

4. Read OTP memory

Code: Select all

>xburn  --target-file "my_target.xn" --read
xrun: First stage multi-node boot failed, please check XN file and Xmos link connectivity
xburn: error: reading device failed

I don't understand why is it so.
May be one of my command set security flags --disable-jtag and/or --enable-master-lock in OTP?

[larry]

What is the tools version used to write the OTP?

[ffomich]

14.1.0

[huw]

This is related to xTIMEcomposer v14.0.x and v14.1.x. The problem should be fixed in v14.2.1. I've published an advisory on the issue at:

http://www.xmos.com/published/tools-adv ... programmed

Huw