MPC5xxxのトピックRe: MPC5748G Adding DCF record

MPC5748G Adding DCF record

rahulramakrishn — Thu, 28 Jun 2018 06:16:08 GMT

I am using S32DS to debug MPC5748G. I want to enable the HSM module in MPC5748G. I found that in order to activate the HSM module, I need to set the HSE bit via DCF record. But I didn't found a way to set the DCF record. How can I access the DCF record in order to enable the HSM module in MPC5748G?

Regards

Rahul Ramakrishnan

Re: MPC5748G Adding DCF record

petervlna — Thu, 28 Jun 2018 06:55:39 GMT

Hi,

This is quite simple and it is described in reference manual chapter 11. DCF records.

Few steps:

1. Construct the DCF record you like to program (according to chapter 11.3 DCF record structure)

2. simply program it to first free location in your UTEST DCF user records area. This area starts with DCF start record.

You can program it from code or via debugger (this is up to you). I recommend you to write debugger script for DCF records programming. Especially for HSM records.

3. restart the device

That's all.

Peter

Re: MPC5748G Adding DCF record

rahulramakrishn — Thu, 28 Jun 2018 10:58:50 GMT

I need to know the script for setting the DCF record. I can't able to found it.

Regards

Rahul Ramakrishnan

Re: MPC5748G Adding DCF record

petervlna — Thu, 28 Jun 2018 12:02:31 GMT

Hi,

You have to write it yourself. As for every application it is unique.

For example for Lauterbach debuggers I use following:

; CPU setup

SYStem.RESet
SYStem.BdmClock 4.0MHz
SYStem.DETECT.CPU
SYStem.Option.WATCHDOG OFF
SYStem.Up

; Initialize internal SRAM (only partially used)
Data.Set EA:0x40000000--0x4000FFFF %Quad 0

; ------------------------------------------------------------------------------
; UTEST address space
FLASH.Create 1. 0x00400000--0x00403FFF TARGET Quad 0x0500 /INFO "UTEST (OTP)"

FLASH.TARGET E:0x40000000 E:0x40002000 0x1000 ~~/demo/powerpc/flash/quad/c55fm5746m.bin /STACKSIZE 0x0200
; ------------------------------------------------------------------------------
DIALOG.YESNO "DCF records programming prepared. Program DCF records now? Click Yes to program UTEST FLASH. Click No for continue."
ENTRY &progflash
IF &progflash
(
FLASH.Program ALL
; here insert DCF records you want to program
data.set 0x00400370 %QUAD 0x00002EDE01000000 ;DCF_UTEST_Miscellaneous
data.set 0x00400378 %QUAD 0x0000D12101000000
data.set 0x00400380 %QUAD 0x8000176F01000000

FLASH.Program OFF
)

As you can see the address is unique for every project, however DCF record could be same.

All you have to do is just program 64bit DCF record (HSM if you like) to first available address in flash starting from 0x400300. In my case it was 0x400370.

If you don''t know how to construct DCF records have a look at guide in reference manual as I have already wrote:

Peter

Re: MPC5748G Adding DCF record

rahulramakrishn — Thu, 28 Jun 2018 13:27:13 GMT

Thank for your support. I am new to this field and this is the first time I

am working with a board. Thank for your time.

Regards

Rahul Ramakrishnan

Re: MPC5748G Adding DCF record

yashkhatri0291 — Fri, 29 Jun 2018 08:03:39 GMT

"0x00400370", how do you find this first free available address?

Re: MPC5748G Adding DCF record

petervlna — Fri, 29 Jun 2018 09:54:02 GMT

Hi,

I simply looked into memory dump of my micro in debugger.

Peter

Re: MPC5748G Adding DCF record

yashkhatri0291 — Tue, 03 Jul 2018 13:09:08 GMT

This is what my memory at the given address looks like, please tell me how and where I can write my HSM enable DCF client::

Re: MPC5748G Adding DCF record

rahulramakrishn — Tue, 03 Jul 2018 14:52:41 GMT

The first 64 bits that is not written. The location can be identified by

the sequence FFFFFFFF.

In your case 00400380.

If u able to update the DCF record please inform me.

On Jul 3, 2018 8:14 PM, "yashkhatri0291@gmail.com" <admin@community.nxp.com>

Re: MPC5748G Adding DCF record

yashkhatri0291 — Tue, 03 Jul 2018 18:37:20 GMT

I tried writing on 380, 390 and even 400 but there was no success.

It cannot be written over those records. Do we need to take some read/write permission in HSM or is it given to us automatically. I want some insights over the HSM_Control register(A3F8_0000), wherein 2 keys are mentioned. Where do we use those keys?

I insist your and Peter's help in this subject.

Re: MPC5748G Adding DCF record

rahulramakrishn — Wed, 04 Jul 2018 04:29:55 GMT

I also stuck in this problem. I didn't found any way to overcome this. If

you found anything please let me know.

On Jul 4, 2018 4:08 AM, "yashkhatri0291@gmail.com" <admin@community.nxp.com>

Re: MPC5748G Adding DCF record

yashkhatri0291 — Wed, 04 Jul 2018 05:46:08 GMT

sorry the address is 0xA3F84000.

Re: MPC5748G Adding DCF record

petervlna — Tue, 10 Jul 2018 07:32:20 GMT

Program your DCF records for HSM enable at address 0x400380.

0xFFFF_FFFF means stop record. No record after this pattern is processed.

Peter

Re: MPC5748G Adding DCF record

rahulramakrishn — Tue, 10 Jul 2018 11:16:39 GMT

I understood that. I need to know the way to update the DCF record.

Re: MPC5748G Adding DCF record

yashkhatri0291 — Tue, 10 Jul 2018 11:20:38 GMT

Why nothing has been mentioned about SHE functional specification in the reference manual or security reference manual? how are we suppose to procure it?

Re: MPC5748G Adding DCF record

petervlna — Tue, 10 Jul 2018 11:29:31 GMT

It is simple flash programing like in all other parts of flash. UTEST is programmed as normal flash.

1. from application code

2. via external tool (for example debugger, programming machine, etc... ) - I have already shared Lauterbach debugger programming script example.

Peter

Re: MPC5748G Adding DCF record

petervlna — Tue, 10 Jul 2018 11:31:44 GMT

SHE Functional Specification is a separate document owned by HIS members.

Re: MPC5748G Adding DCF record

陈简陈 — Fri, 20 Jul 2018 02:47:15 GMT

@Peter NOW，I have no Lauterbach debugger, how can I programme from application code? Can you give me an example?

Regards

Re: MPC5748G Adding DCF record

rahulramakrishn — Fri, 27 Jul 2018 05:05:46 GMT

Do you found any way to update DCF records without using Lauterbach debugger? If you found please help me to update the DCF record. I am using S32DS and working on MPC5748G LCEVB. What should I do to add DCF records using S32DS?

Is there any examples available to you?

Regards

Re: MPC5748G Adding DCF record

petervlna — Tue, 31 Jul 2018 14:44:13 GMT

Hi, Yes you can do it via S32DS.

Stanislav Sliva wrote a guide how to update DCF records:

HOWTO: Program DCF record into UTEST flash in S32 Design Studio for Power

Peter

PS: It took me 20 seconds to find it here on community.