TMS320F2800137: initSysctrl() function doubt

Manoj,

The #pragma you see at the end of your snippet is one of the required steps to get this into RAM.  The other 2 are:

1)Inside the .cmd file you should see .TI.ramfunc placed as a load/run section; loading to flash and then running from RAM

Below is example from our generic_flash_lnk.cmd file located here: C:\ti\c2000\C2000Ware_5_00_00_00\device_support\f280013x\common\cmd

#if defined(__TI_EABI__)
   .TI.ramfunc      : LOAD = FLASH_BANK0_SEC_0_7,
                      RUN = RAMLS0,
                      LOAD_START(RamfuncsLoadStart),
                      LOAD_SIZE(RamfuncsLoadSize),
                      LOAD_END(RamfuncsLoadEnd),
                      RUN_START(RamfuncsRunStart),
                      RUN_SIZE(RamfuncsRunSize),
                      RUN_END(RamfuncsRunEnd),
                      ALIGN(8)
#else
   .TI.ramfunc      : LOAD = FLASH_BANK0_SEC_0_7,
                      RUN = RAMLS0,
                      LOAD_START(_RamfuncsLoadStart),
                      LOAD_SIZE(_RamfuncsLoadSize),
                      LOAD_END(_RamfuncsLoadEnd),
                      RUN_START(_RamfuncsRunStart),
                      RUN_SIZE(_RamfuncsRunSize),
                      RUN_END(_RamfuncsRunEnd),
                      ALIGN(8)
#endif

2)You need to call the memcopy function before initSysctrl() is called in program.  Below is from our sysctrl.c file; you see the compile time #if for a pre-defined "FLASH" used to place this depending on if the compile is for a flash build or not.  If you always plan to build for flash, you can remove the #if that wraps around this code.

oid InitSysCtrl(void)
{
    //
    // Disable the watchdog
    //
    DisableDog();

#ifdef _FLASH
    //
    // Copy time critical code and Flash setup code to RAM. This includes the
    // following functions: InitFlash()
    //
    // The  RamfuncsLoadStart, RamfuncsLoadSize, and RamfuncsRunStart
    // symbols are created by the linker. Refer to the device .cmd file.
    //
    memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

    //
    // Call Flash Initialization to setup flash waitstates. This function must
    // reside in RAM.
    //
    InitFlash();
#endif

Best,
Matthew