LAUNCHXL-F280025C: Problem Copy Secure Functions from Flash To Ram results in illegal operation

Hi Yoav,

Having the value 1 in the  B0_Z2_EXEONLYSECTR means that the EXEONLY is disabled. You need to program these fields as 0 to make the Flash sector and RAM as EXEONLY. Please give it a shot after configuring them as EXEONLY.  

Thanks & Regards

Pramod

Hi Pramod

Thanks fore the reply.

How I configure the EXEONLY ram/flash? I can see the functions that can read the status like this:

DCSM_EXEOnlyStatus
DCSM_getZone2RAMEXEStatus(DCSM_RAMModule module)
{
    DCSM_EXEOnlyStatus status;

    //
    // Check if module belongs to this zone
    //
    if(DCSM_getRAMZone(module) != DCSM_MEMORY_ZONE2)
    {
        status = DCSM_INCORRECT_ZONE;
    }
    else
    {
        //
        // Get the EXE status of the RAM Module
        //
        status = (DCSM_EXEOnlyStatus)((HWREGH(DCSMBANK0_Z2_BASE +
               DCSM_O_Z2_EXEONLYRAMR) >> (uint16_t)module) & (uint16_t)0x01U);
    }
    return(status);
}

are there functions that sets the EXEONLY ram/flash? or I need to write manually to the address? if that

is the case can you give me an example on how to do that because I tried this:

changing from 0x0F to 0x0D (setting RAMLS5 to 0):

 and it didn't change the value.

Thanks

Yoav

Hi Yoav,

These values cannot be directly written via CCS. The EXEONLY bits are a part of other security configuration settings which you make in the OTP as part of the ZSBs. You need to use the Flash programming tools for the same (Flash API/ CCS Flash plugin/ UniFlash) which you have used to change other DCSM settings  

Let me know once the settings change will resolve your issue. 

Thanks & Regards

Pramod

Hi Pramod

if this is an OTP area it means that I cant change the status of these sector/ram EXEONLY state?

Thanks

Yoav

Hi Parmod

Thank you for your help. Its working.

Thanks

Yoav