TMS320F28388D: F28388D OTP program

Elker Cavina

Part Number: TMS320F28388D
Other Parts Discussed in Thread: C2000WARE, SYSCONFIG

In a F28388 app, we need to program the Z1-BOOTPINCONFIG and Z1-BOOTDEF in order to force boot of CPU1 from flash regardless of GPIO72/84.
Configuration is exactly what described into 5.4.3.1 for reference manual.

This translates to write OTP with following values:
0x78008 = 0x5AFF_FFFF (Z1-GPREG1 aka Z1-BOOTPINCONFIG)
0x7800A = 0xFFFF_FFFF (Z1-GPREG2)
0x7800C = 0x0303_0303 (Z1-GPREG3 aka Z1-BOOTDEFLOW)
0x7800E = 0xFFFF_FFFF (Z1-GPREG4 aka Z1-BOOTDEFHIGH)

So far I've tested the following approaches to write OTP:

a) With CCS10.2, in the debug configuration, set the following values in CPU1 / Flash Settings:
Zone1:
Z1-GPREG1..4 set as above
Z1-CSMPSWD0=0xFFFF_FFFF
Z1-CSMPSWD1=0x4D7F_FFFF
Z1-CSMPSWD2=0xFFFF_FFFF
Z1-CSMPSWD3=0xFFFF_FFFF
All other fields Z1/Z2 set to "--"

On debug settings OTP is not set, via memory browser otp is still all 0xFF

b) Included into the binary the image for Z1-GPREG1..4, in debug configuration set Z1-CSMPSWDx as a) and started debug.
CCS fails to program Cpu1 program OTP.

As none of the previous approach works, I'm going to write code for writing OTP via FlashAPI.
I cannot find in c2000ware 3.04 any example about programming OTP with:
- unlock DCSM for OTP write
- actually write OTP words

Is there a suggested approach for managing OTP program?

Best regards,
Elker

over 3 years ago

0 Joseph Casuga over 3 years ago

TI__Mastermind 38610 points

Hi Elker,

Have you tried using the dcsm security tool? This is available in C2000Ware version 4 or later. This would be another way to accomplish what you are describing above.

Regards,

Joseph

0 Elker Cavina over 3 years ago in reply to Joseph Casuga

Prodigy 65 points

Hello Joseph,
I've also tried with dcsm security tool, the steps followed were:

a) import DCSM tool project for F28388D

b) configure DCSM sysconfig for booting always from FLASH sector 0:

c) check generated asm (seems fine):

Here I also checked the output hex which contains data declared in the ASM file correctly.

d) create a debug configuration for programming CPU1

e) start debugging with CCS:

Code composer programming stucks at this point forever.
I've also repeated the programming procedure by setting default passwords in the flasher plugin, as in point a) of my first post but the result is the same.

---

Just for reference, I'm using CCS 10.2 with sysconfig 1.12 and C2000ware v4.01.

Do I miss some point?
How can I program this OTP?

Best regards,
Elker

0 Joseph Casuga over 3 years ago in reply to Elker Cavina

TI__Mastermind 38610 points

Hi Elker,

Steps seem fine but will defer you to our DCSM expert for better guidance.

Regards,

Joseph

0 Vivek Singh over 3 years ago in reply to Joseph Casuga

TI__Guru** 115831 points

Hi,

If you have not looked at this app note, I'll suggest to refer this on how to use the security tool. If you still have the issue, let us know.

https://www.ti.com/lit/pdf/spracp8

Regards,

Vivek Singh

0 Elker Cavina over 3 years ago in reply to Vivek Singh

Prodigy 65 points

Hello Vivek,
my last post was just following app note spracp8 for generating the OTP image and I've found it very useful: elf binary does contain OTP data in a loadable section with the correct data

Unfortunately the app note does not mention anything about actually programming the image into the controller by means of code composer flash via debugger.

Does the CCS debugger flasher have to the ability to unlock OTP security before flashing a properly generated image?
Is there any preliminary action to be performed in order to unlock OTP so the flasher can actually work?

Regards,
Elker

0 MatthewPate over 3 years ago in reply to Elker Cavina

TI__Guru* 81440 points

Elker,

We have holiday tomm in the US, please expect our next reply by end of day Monday.

Best,

Matthew

0 Elker Cavina over 3 years ago in reply to MatthewPate

Prodigy 65 points

Matthew,
we are going in Easter holyday too, no problem.

Regards,
Elker

0 Vivek Singh over 3 years ago in reply to Elker Cavina

TI__Guru** 115831 points

Hi Elker,

Elker Cavina said:
Does the CCS debugger flasher have to the ability to unlock OTP security before flashing a properly generated image?

Yes, you need to open the flash tool GUI in CCS (Tools -> On-Chip Flash) and enter correct passwords in password fields in GUI to perform flash operations.

Regards,

Vivek Singh

0 Elker Cavina over 3 years ago in reply to Vivek Singh

Prodigy 65 points

Hello Vivek,
I solved the problem in flashing the OTP updating to CCS 11.2: by setting the correct passwords in the Flash plugin now the OTP gets programmed properly. CCS 10.2 apparently does not work in programming F28388D OTP.

Thanks for your support.

Regards,
Elker

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TMS320F28388D: F28388D OTP program