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How to copy the F2803x Flash API to RAM?

Matthew S
Prodigy 210 points
Other Parts Discussed in Thread: CONTROLSUITE

I need to use the Flash API in combination with a CSM lock. I've read that this is possible but that the Flash API must run from secured memory. I thought I followed all the necessary steps to copy the API to L0 SARAM but it seems the code still runs from the Boot ROM. It works fine when the CSM is unlocked and fails when de CSM is locked.

 I’ve tried to run several versions of the Example_Flash28035_API but all failed to build due to unresolved symbols or libraries.

 I’ve read the document “TMS320F2803x PiccoloTM Flash API using CCS4.0v” and on page 16 it says :

 

This group section defines symbols that the linker will assign to the load start, load end, and run start addresses of the section.

For the example shown, the linker will assign the following symbols:

- Load address start: RamfuncsLoadStart

- Load address end: RamfuncsLoadEnd

- Run address start: RamfuncsRunStart

These symbols are already declared in the main library include file, Flash2803x_API_Library.h

 

But the “Flash2803x_API_Library.h” used in the examples had the symbols :

 

extern Uint16 Flash28_API_LoadStart;

extern Uint16 Flash28_API_LoadEnd;

extern Uint16 Flash28_API_RunStart;

 

declared.  Defining a new section in the command file didn’t work.

 

Flash28_API :

{

            -lFlash2802x_API_V100a.lib(.text)

}                      

LOAD = FLASHD,

RUN = PRAML0, 

LOAD_START(_Flash28_API_LoadStart),

LOAD_END(_Flash28_API_LoadEnd),

RUN_START(_Flash28_API_RunStart),

PAGE = 0

Would someone please help me through this process?

  • 0
    TI__Mastermind 22025 points

    Matthew,

    The FlashAPI libraries we release publicly in controlSUITE are simply symbol maps which point you to the actual functions in bootROM.  The functions in bootROM cannot be copied into RAM because they are linked to run from the bootROM address space.  What you need is the actual FlashAPI library so you can place it in flash, but copy it to RAM at runtime.  I'm not certain, but I believe you have to jump through some hoops to get this (I'll check).

    FYI, you are doing things correctly in the last snippet of linker code you posted.  This is exactly how I would have done it.

    Regards,

    Trey

  • 0 in reply to Trey German289
    Prodigy 210 points

    Trey,

    Thank you for your answer.

    I would very much like to have the actual flash API code. It would be great if you can help me get it, or point me in the right direction?

    We've spent many many hours on our custom bootloader to receive the firmware encrypted and decrypt it. It works perfectly but only on an unlocked device. We need the highest possible level of code security so temporarily unlocking the device during bootloading is not an option for us.

    Regards,

    Matthew

  • 0 in reply to Matthew S
    TI__Mastermind 22025 points

    Matthew,

    I completely understand...in fact I did a bootloader very similar to what you've done for the F2806x.  Because of some security concerns we don't release the lib publicly, but we can get you a copy of it if we can get your firm to sign an agreement.  Go ahead and send an email to c2000_marketing@list.ti.com  explaining that you need the full FlashAPI library so you can do a secure re-flash.  They are already aware of you and ought to be able to get you setup pretty quickly.

    Regards,

    Trey

  • 0 in reply to Trey German289
    Prodigy 210 points

    Trey,

    Thank you very much for your help. I've sent the e-mail.

    Regards,

    Matthew

  • 0 in reply to Matthew S
    Prodigy 210 points

    Trey,

    It's been a few days. I've sent two e-mails to the above address but no reply. Our production is halted for a week now waiting for this issue to be solved. Customers begin complaining.

    Calling TI doesn't help really since we're continuously told to fill in the online form or send an e-mail.

    Maybe you can pull some strings?

    Thanks in advance.

    Regards,

    Matthew

  • 0 in reply to Matthew S
    TI__Mastermind 22025 points

    Matthew,

    Sorry to hear they haven't replied.  I will personally talk to them and get this straightened out for you.

    Regards,

    Trey

  • 0 in reply to Trey German289
    TI__Intellectual 830 points

    Matthew,

    Please try again to the c2000_mktg@list.ti.com email. I haven't seen your message regarding this, so let's try one more time. From there we can go over the details as necessary.

    Regards,

    Patrick

  • 0 in reply to Patrick Carner
    Prodigy 210 points

    Patrick,

    I tried to send an e-mail to the address you mentioned but got the following (auto-) reply :

    The message you sent to the mailing list c2000_mktg, with the subject line:

     

       FlashAPI library source code

     

    was not sent to the list subscribers because you do not have permission to send messages to this mailing list.

     

    If you did not send a message to the mailing list named above, be aware that the named list may be subscribed to a list to which you did send a message. In that case, only the subscribers of the named list did NOT receive your message.

     

    If you want to request permission to send messages to the named list, please contact the list owner.

    Regards,

    Matthew

  • 0 in reply to Matthew S
    Prodigy 210 points

    Got the lib and the bootloader works perfectly on a locked device now. Thank you all for your help.

    Regards,

    Matthew.

  • 0 in reply to Matthew S
    TI__Mastermind 22025 points

    Glad to hear everything is working for you Matthew!

    Trey

  • 0 in reply to Trey German289
    Intellectual 675 points

    Is this Lib available?

    I am working on the exact same problem!

    regards,

    Jason

  • 0 in reply to jason wiseman
    TI__Mastermind 22025 points

    Jason,

    Yes the library is available, but must be requested through our marketing channel.  Please send an email to c2000_mtkg@list.ti.com and tell them you need the full flashAPI library (not just the symbols).  They should be able to get you squared away.

    Regards,

    Trey

  • 0 in reply to Trey German289
    Intellectual 675 points

    Thanks Trey,

    I had some help from my local FAE to speed things along.

    BTW, the email is c2000_mktg@list.ti.com.  (t and k swapped). 

  • 0 in reply to Matthew S
    Prodigy 10 points

    I would also like the full flash library, except for the 28069.  However, I'm running into the same issue that Matthew S did:  When I try to email c2000_mktg@list.ti.com, I get a replay that says

    you do not have permission to send messages to this mailing list.

    Can anyone tell me how I can get permissions to send to that list, or another way I can get in contact with the right people?

    Thanks,

    ..Dustin

  • 0 in reply to Dustin Johnson
    TI__Intellectual 830 points

    Dustin,

    Please message me your e-mail address and I will get you setup with the Flash API.

    Thanks,
    Patrick

  • 0 in reply to Patrick Carner
    Prodigy 135 points

    Hi friend,

    Even I have to implement a secure bootloader for my TMS320F2803x device and I need the Flash28035_API_V100.lib for doing it. I request this library to c2000_mktg@list.ti.com but I received the same reply of other people: I don't have permission to send messages to this mailing list. How can I get this library ?

    Regards

    Marcello

  • 0 in reply to Patrick Carner
    Prodigy 20 points

    Trey,

    I have the same problem as well. Can you please arrange for me to get the Flash API?

    Best Regards,

    Thanos

  • 0 in reply to Thanos Kontos
    Guru 14640 points

    Trey:

    I too need access to the source code for flashAPI and bootloader libraries. Can you arrange for me to have access to the c2000_mktg@list.ti.com,  so I can ask for the source?

     

  • 0 in reply to Todd Anderson78572
    TI__Mastermind 22025 points

    Thanos and Todd,

    I've sent your request to the person that handles these.  He should be contacting each of you shortly.

    Regards,

    Trey

  • 0 in reply to Trey German289
    TI__Intellectual 830 points

    Thanos and Todd,

    Please send me a private message with your e-mails and I will work with you.

    Thank you,

    Patrick

  • 0 in reply to Patrick Carner
    Guru 14640 points

    Patrick:

    I sent you my email via "conversation." Did you receive it?

  • 0 in reply to Todd Anderson78572
    Prodigy 10 points

    I am also having the same issue of trying to re-flash secure memory via a custom bootloader. I am using a 28035 Piccolo device and we have written a custom bootloader in order to re-flash devices in the field.  When we turn on the CSM, the flash routines do not work since they are executed out of BootROM (unsecure memory) and there is no way to link these routines in without the full library.  (We can then copy the routines into secure RAM to execute).

    Is sending a request to 'c2000_mktg@list.ti.com' still the fastest way to receive the source libraries?

    Thanks.

    Jason Young

  • 0 in reply to Jason Young
    Prodigy 100 points
    Hi Jason,
    Did you get the Flash library? I have same problem and need this library too. But it is still disabled to write to c2000_mktg@list.ti.com. How did you get this library?
  • 0 in reply to Oleg Gladyshev
    TI__Guru* 91145 points

    The .lib is now included in controlSUITE in the libs\utilities\flash_api\2803x\v100a\lib directory.  The 2803x_FlashAPI_BootROMSymbols.lib file is how you would access the flash API in ROM.  The Flash2803x_API_V100.lib file is the library itself and can be incorporated into a custom loader.

    Regards

    Lori

  • 0 in reply to Lori Heustess
    Prodigy 100 points
    Thank you very much!