CCS/TMS320F280049C: F280049 - Zero Boot Mode Select (modify .asm & .cmd)

Johnny Shih

Intellectual 535 points

Part Number: TMS320F280049C

Tool/software: Code Composer Studio

Dear TI team,

My C2000 device is F280049 ( 64 pin), I want to change boot mode when I use CCS9.1 LED sample project.

My step as below:

1. modify "f28004x_codestartbranch.asm" ======================>

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

.sect "codestart"

.sect "OTP_KEY" ; add by me
.int 0x5AFF ; add by me
.sect "OTP_BMODE" ; add by me
.int 0xFFFF ; add by me
.sect "OTP_Boot" ; add by me
.int 0xFF03 ; add by me

code_start:

//======================================

2. modify "28004x_generic_flash_lnk.cmd"

MEMORY
{
PAGE 0 :
/* BEGIN is used for the "boot to Flash" bootloader mode */

BEGIN : origin = 0x080000, length = 0x000002
RAMM0 : origin = 0x0000F5, length = 0x00030B

RAMLS0 : origin = 0x008000, length = 0x000800
RAMLS1 : origin = 0x008800, length = 0x000800
RAMLS2 : origin = 0x009000, length = 0x000800
RAMLS3 : origin = 0x009800, length = 0x000800
RAMLS4 : origin = 0x00A000, length = 0x000800
RESET : origin = 0x3FFFC0, length = 0x000002

OTP_BMODE : origin = 0x07800C, length = 0x000001 /* Add by me */
OTP_KEY : origin = 0x07800D, length = 0x000001 /* Add by me */
OTP_Boot : origin = 0x07801C, length = 0x000003 /* Add by me */

/* Flash sectors */
/* BANK 0 */

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SECTIONS
{
codestart : > BEGIN, PAGE = 0, ALIGN(4)
.text : >>FLASH_BANK0_SEC1 | FLASH_BANK0_SEC2 | FLASH_BANK0_SEC3, PAGE = 0, ALIGN(4)
.cinit : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
.switch : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */

OTP_BMODE : > OTP_BMODE, PAGE = 0 /* Add by me */
OTP_KEY : > OTP_KEY, PAGE = 0 /* Add by me */
OTP_Boot : > OTP_Boot, PAGE = 0 /* Add by me */

.stack : > RAMM1, PAGE = 1

#if defined(__TI_EABI__)

3. Build project and connect to debug mode -> program Flash -> and After program it will stop at as below screen.