F28335 strange boot behavior/problem

Hello All,

I am having a strange problem with booting f28335. I have seen alot discussion about it but as i am starter so reading them isn't helping much.

I am programming through Matlab Simulink with CCS toolchain. So actually I only have blocks and I dont write any C++ code in CCS. Matlab creates it itself.

I had been using the f28335 for smaller and less complex application and it was working fine.

As the new application involves Fourier Transforms so my .ebss object became big to fit in old memory map.I increased the RAM0L3 for data (origin=0x8000, length=0x6000 which was previously origin=0x8000, length=0x4000). It reduced the portion for RAM4L7 where it is specified code(origin=0xe000, length=0x2000 which was previously origin=0xc000, length=0x4000)

Now when i program through emulator, it works fine. But when i power off/on again, it is stuck somewhere. But while it is stuck, I connect through emulator to CCS and RUN code again, it starts working again. Also if I press the reset button on the board with emulator disconnected , it starts working which ensures that atleast the RESET button knows where is the start of code. But on Power on/off, it doesn't work.

Here is my .cmd file made in CCS.

MEMORY
{
PAGE 0:
    BEGINRAM:    origin=0x0, length=0x2
    RAMM0:   origin=0x2, length=0x3fe
    OTP:     origin=0x380400, length=0x400
    FLASH:   origin=0x300000, length=0x3fff6
    BEGINFLASH:  origin=0x33fff6, length=0x2
    CSM_PWL:     origin=0x3f7ff8, length=0x8
    IQTABLES:    origin=0x3fe000, length=0xb50
    IQTABLES2:   origin=0x3feb50, length=0x8c
    FPUTABLES:   origin=0x3febdc, length=0x6a0
    ROM:     origin=0x3ff27c, length=0xd44
    RESET:   origin=0x3fffc0, length=0x2
    VECTORS:     origin=0x3fffc2, length=0x3e
    RAML4L7:     origin=0xe000, length=0x2000
    ADC_CAL:     origin=0x380080, length=0x9
    ZONE7P:  origin=0x200000, length=0x10000
PAGE 1:
    RAML0L3:     origin=0x8000, length=0x6000
    RAMM1:   origin=0x400, length=0x400
    ZONE7D:  origin=0x210000, length=0x10000
}
SECTIONS
{
    .vectors:    load = 0x000000000
    .text:   > FLASH, PAGE = 0
    .switch:     > FLASH, PAGE = 0
    .bss:    > RAML0L3, PAGE = 1
    .ebss:   > RAML0L3, PAGE = 1
    .far:    > RAML0L3, PAGE = 1
    .cinit:  > FLASH, PAGE = 0
    .pinit:  > FLASH, PAGE = 0
    .const:  > FLASH, PAGE = 0
    .econst:     > FLASH, PAGE = 0
    .reset:  > RESET, PAGE = 0, TYPE = DSECT
    .data:   > RAML0L3, PAGE = 1
    .cio:    > RAML0L3, PAGE = 1
    .sysmem:     > RAML0L3, PAGE = 1
    .esysmem:    > RAML0L3, PAGE = 1
    .stack:  > RAMM1, PAGE = 1
    .rtdx_text:  > FLASH, PAGE = 0
    .rtdx_data:  > RAML0L3, PAGE = 1
    IQmath:  > FLASH, PAGE = 0
    codestart:   > BEGINFLASH, PAGE = 0
    csmpasswds:  > CSM_PWL, PAGE = 0
    csm_rsvd:    > RAMM0, PAGE = 0
    ramfuncs:    LOAD = FLASH,
        RUN = RAMM0,
        LOAD_START(_RamfuncsLoadStart),
        LOAD_END(_RamfuncsLoadEnd),
        RUN_START(_RamfuncsRunStart),
        PAGE = 0
    .adc_cal:    > ADC_CAL, PAGE = 0 , TYPE = NOLOAD
    IQmathTables:    > IQTABLES, PAGE = 0 , TYPE = NOLOAD
    IQmathTables2:   > IQTABLES2, PAGE = 0 , TYPE = NOLOAD
    FPUmathTables:   > FPUTABLES, PAGE = 0 , TYPE = NOLOAD
}
-l "C:\MATLAB\R2012b\toolbox\idelink\extensions\ticcs\c2000\c2833xPeripherals.cmd"

and my CodeStartBranch.asm code is:

***********************************************************************

WD_DISABLE  .set    1       ;set to 1 to disable WD, else set to 0

    .ref _c_int00
    .global code_start

***********************************************************************
* Function: codestart section
*
* Description: Branch to code starting point
***********************************************************************

    .sect "codestart"

code_start:
    .if WD_DISABLE == 1
        LB wd_disable       ;Branch to watchdog disable code
    .else
        LB _c_int00         ;Branch to start of boot.asm in RTS library
    .endif

;end codestart section


***********************************************************************
* Function: wd_disable
*
* Description: Disables the watchdog timer
***********************************************************************
    .if WD_DISABLE == 1

    .text
wd_disable:
    SETC OBJMODE        ;Set OBJMODE for 28x object code
    EALLOW              ;Enable EALLOW protected register access
    MOVZ DP, #7029h>>6  ;Set data page for WDCR register
    MOV @7029h, #0068h  ;Set WDDIS bit in WDCR to disable WD
    EDIS                ;Disable EALLOW protected register access
    LB _c_int00         ;Branch to start of boot.asm in RTS library
    
    .endif

;end wd_disable



    .end
    
;//===========================================================================
;// End of file.
;//===========================================================================

Hope its not a big problem for a lot of you out there :)

Regards,

Adil