MCU-PLUS-SDK-AM243X: SYSFW address in CPU internal SRAM

LEI YAN

Hello e2e,

We have a question about the SYSFW address in CPU internal SRAM, the SYSFW is included from the file "C:\ti\mcu_plus_sdk_am243x_08_00_00_21\source\drivers\sciclient\soc\am64x_am243x\sysfw_signed.h", and loaded by Sciclient_loadFirmware((uint32_t*)gSysFw), but we can not find the real address in CPU RAM, can you help on that?

Thanks in advance.

void Bootloader_socLoadSysFw()
{
    uint32_t size = SYSFW_SIZE_IN_BYTES;
    int32_t retVal = SystemP_SUCCESS;
       
    retVal = Sciclient_init(CSL_CORE_ID_R5FSS0_0);
    if(retVal == SystemP_SUCCESS)
    {
        size = (size + 31U) & ~(31U);

        CacheP_wbInv( (void*)gSysFw, size, CacheP_TYPE_ALL);
        retVal = Sciclient_loadFirmware((uint32_t*)gSysFw);
    }
    if(retVal == SystemP_SUCCESS)
    {
        retVal = sciclient_set_boardcfg();
    }
    DebugP_assertNoLog(retVal==SystemP_SUCCESS);
}

LEON

over 3 years ago

+1 Ming Wei over 3 years ago

TI__Guru 55165 points

Hi Leon,

The SYSFW is actually loaded into the DMSC(M3) internal memory. It does use some of the SRAM area (like the last 128KB in the SRAM as scratch memory, but most of them will be release after the booting is completed.

Best regards,

Ming

0 LEI YAN over 3 years ago in reply to Ming Wei

TI__Expert 3980 points

Hello Ming,

Got it, and we didn't see any description about DMSC detail info, will it release in final version document?

And for general customer, it seems they may need change the SYSFW in real application, do we have related documents on that?

Thanks for your help.

LEON

+1 Ming Wei over 3 years ago in reply to LEI YAN

TI__Guru 55165 points

Hi Leon,

The DMSC is not for customers to use and the SYSFW is not for customer to change depending on the applications. The DMSC running SYSFW will provide certain services like power management, resource management for the application program. There is a API for the SYSFW which is the sciclient. You can find more details in AM64x MCU+ SDK: SCICLIENT (ti.com)

Best regards,

Ming

0 LEI YAN over 3 years ago in reply to Ming Wei

TI__Expert 3980 points

Hello Ming,

Got it, thanks for the explanation.

LEON

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MCU-PLUS-SDK-AM243X: SYSFW address in CPU internal SRAM