TMS320F28069: Bootloader

Hello!

1. Yes, of coarse. I did it.

2. No, it's not replace bootrom. It will be placed into one of flash sectors.

3. Same way as any other firmware.

You can open examples: C2000Ware_3_02_00_00\device_support\f2806x\MWare\boot_loader and C2000Ware_3_02_00_00\device_support\f2806x\examples\c28\bl_app

Hi Mathew,

MatthewPate said:

application report on creating a serial flash loader/kernel.

This link is not opening.

Thanks,

Najeeb

Hi,

Thanks for response, Actually I am trying to update firmware through sci. I know this feature is already present in the default bootloader but that requires certain pins to be set and that requires hardware involvement. I want to trigger SCI_boot() from software and I did exactly that i.e location sci_boot() function of the default bootloader and jumped to that but the kernel would load successfully but the application load would fail.

Later on left that approach and started working on to create my own bootloader, added the source of default bootloader (with some changes) to my project and placed that into the flash location. Here is my cmd file:

/*
 * Copyright (c) 2015-2020, Texas Instruments Incorporated
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * *  Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * *  Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * *  Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/*
 *  ======== TMS320F28069.cmd ========
 *  Define the memory block start/length for the F28069
 */

/*
 *  PAGE 0 will be used to organize program sections
 *  PAGE 1 will be used to organize data sections
 *
 *  Notes:
 *      Memory blocks on F2806x are uniform (ie same
 *      physical memory) in both PAGE 0 and PAGE 1.
 *      That is the same memory region should not be
 *      defined for both PAGE 0 and PAGE 1.
 *      Doing so will result in corruption of program
 *      and/or data.
 */

_Cla1Prog_Start = _Cla1funcsRunStart;

CLA_SCRATCHPAD_SIZE = 0x100;
--undef_sym=__cla_scratchpad_end
--undef_sym=__cla_scratchpad_start

MEMORY
{
PAGE 0 :   /* Program Memory */

   	RAML4L      : origin = 0x00A000, length = 0x001C00     /* on-chip RAM block L4 */
    L03SARAM    : origin = 0x008000, length = 0x002000     /* on-chip RAM block L0-L3 */
    OTP         : origin = 0x3D7800, length = 0x000400     /* on-chip OTP */
    FLASH       : origin = 0x3D8000, length = 0x01FF80     /* on-chip FLASH */
    CSM_RSVD    : origin = 0x3F7F80, length = 0x000076     /* Program with all 0x0000 when CSM is in use. */
    BEGIN       : origin = 0x3F7FF6, length = 0x000002     /* Used for "boot to Flash" bootloader mode. */
    CSM_PWL     : origin = 0x3F7FF8, length = 0x000008     /* CSM password locations in FLASH */

    FPUTABLES   : origin = 0x3FD860, length = 0x0006A0     /* FPU Tables in Boot ROM */
    IQTABLES    : origin = 0x3FDF00, length = 0x000B50     /* IQ Math Tables in Boot ROM */
    IQTABLES2   : origin = 0x3FEA50, length = 0x00008C     /* IQ Math Tables in Boot ROM */
    IQTABLES3   : origin = 0x3FEADC, length = 0x0000AA	   /* IQ Math Tables in Boot ROM */

    ROM         : origin = 0x3FF3B0, length = 0x000C10     /* Boot ROM */
    RESET       : origin = 0x3FFFC0, length = 0x000002     /* part of boot ROM  */
    VECTORS     : origin = 0x3FFFC2, length = 0x00003E     /* part of boot ROM  */


PAGE 1 :   /* Data Memory */

    M01SARAM    : origin = 0x000000, length = 0x000800     /* on-chip RAM block M0, M1 */
    PIEVECT     : origin = 0xD00,    length = 0x100
    L46SARAM    : origin = 0x00A000, length = 0x006000     /* on-chip RAM block L4-L6 */
    L78SARAM    : origin = 0x010000, length = 0x004000     /* on-chip RAM block L7, L8 */

    CLARAM2     : origin = 0x008000, length = 0x000800	  /* on-chip RAM block L0 */
    CLARAM0     : origin = 0x008800, length = 0x000400	  /* on-chip RAM block L1 */
    CLARAM1     : origin = 0x008C00, length = 0x000400	  /* on-chip RAM block L1 */
    CLA1_MSGRAMLOW       : origin = 0x001480, length = 0x000080
    CLA1_MSGRAMHIGH      : origin = 0x001500, length = 0x000080
}

/*
 *  Allocate sections to memory blocks.
 *  Note:
 *      codestart   user defined section in DSP28_CodeStartBranch.asm
 *                  used to redirect code execution when booting to flash
 *
 *      ramfuncs    user defined section to store functions that will be
 *                  copied from Flash into RAM
 */

SECTIONS
{
	.SciBoot       	: > FLASH      PAGE = 0

    /* Allocate program areas: */
    .cinit              : > FLASH       PAGE = 0
    .pinit              : > FLASH       PAGE = 0
    .text               : > FLASH       PAGE = 0
    codestart           : > BEGIN       PAGE = 0
    ramfuncs            : LOAD = FLASH      PAGE = 0,
                          RUN  = L03SARAM   PAGE = 0,
                          LOAD_START(_RamfuncsLoadStart),
                          LOAD_SIZE(_RamfuncsLoadSize),
                          LOAD_END(_RamfuncsLoadEnd),
                          RUN_START(_RamfuncsRunStart)

    csmpasswds          : > CSM_PWL     PAGE = 0
    csm_rsvd            : > CSM_RSVD    PAGE = 0

    /* Allocate uninitalized data sections: */
    .stack              : > M01SARAM | L46SARAM                 PAGE = 1
    .ebss               : > M01SARAM | L46SARAM                 PAGE = 1
    .data               : > M01SARAM | L46SARAM                 PAGE = 1
    .esysmem            : > L78SARAM | L46SARAM | M01SARAM      PAGE = 1
    .cio                : > L78SARAM | L46SARAM | M01SARAM      PAGE = 1

    /* Initalized sections go in Flash */
    /* For SDFlash to program these, they must be allocated to page 0 */
    .econst             : > FLASH       PAGE = 0
    .switch             : > FLASH       PAGE = 0
    .args               : > FLASH       PAGE = 0

#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 15009000
    .TI.ramfunc         : {} LOAD = FLASH    PAGE = 0,
                             RUN  = L03SARAM PAGE = 0,
                             table(BINIT)
#endif
#endif

    /* Allocate IQ math areas: */
    IQmath              : > FLASH       PAGE = 0            /* Math Code */
    IQmathTables        : > IQTABLES    PAGE = 0, TYPE = NOLOAD

    /* Allocate FPU math areas: */
    FPUmathTables       : > FPUTABLES   PAGE = 0, TYPE = NOLOAD

    /*
     *  Uncomment the section below if calling the IQNexp() or IQexp()
     *  functions from the IQMath.lib library in order to utilize the
     *  relevant IQ Math table in Boot ROM (This saves space and Boot ROM
     *  is 1 wait-state). If this section is not uncommented, IQmathTables2
     *  will be loaded into other memory (SARAM, Flash, etc.) and will take
     *  up space, but 0 wait-state is possible.
     */
    /*
    IQmathTables2       : > IQTABLES2   PAGE = 0, TYPE = NOLOAD
    {
        IQmath.lib<IQNexpTable.obj> (IQmathTablesRam)
    }
    */

    /*
     *  Uncomment the section below if calling the IQNasin() or IQasin()
     *  functions from the IQMath.lib library in order to utilize the
     *  relevant IQ Math table in Boot ROM (This saves space and Boot ROM
     *  is 1 wait-state). If this section is not uncommented, IQmathTables2
     *  will be loaded into other memory (SARAM, Flash, etc.) and will take
     *  up space, but 0 wait-state is possible.
     */
    /*
    IQmathTables3       : > IQTABLES3   PAGE = 0, TYPE = NOLOAD
    {
        IQmath.lib<IQNasinTable.obj> (IQmathTablesRam)
    }
    */

   .scratchpad      : > CLARAM0,   PAGE = 1
   .bss_cla	    	: > CLARAM0,   PAGE = 1
   .const_cla	    : > CLARAM0,   PAGE = 1

       	dclfuncs		: > RAML4L,		PAGE = 0
		dcl32funcs		: > RAML4L,		PAGE = 0

		ramfuncs		: > RAML4L,		PAGE = 0



		Cla1Prog        : > L03SARAM,
                     	LOAD_START(_Cla1funcsLoadStart),
                     	LOAD_END(_Cla1funcsLoadEnd),
                     	LOAD_SIZE(_Cla1funcsLoadSize),
                     	RUN_START(_Cla1funcsRunStart),
                     	PAGE = 0

   		Cla1ToCpuMsgRAM  : > CLA1_MSGRAMLOW,   PAGE = 1
   		CpuToCla1MsgRAM  : > CLA1_MSGRAMHIGH,  PAGE = 1
	   Cla1DataRam0	    : > CLARAM0,	  PAGE = 1
	   Cla1DataRam1	    : > CLARAM1,	  PAGE = 1
	   Cla1DataRam2	    : > CLARAM2,	  PAGE = 1

	   CLA1mathTables	: > CLARAM1,
	                      LOAD_START(_Cla1mathTablesLoadStart),
	                      LOAD_END(_Cla1mathTablesLoadEnd),
	                      LOAD_SIZE(_Cla1mathTablesLoadSize),
	                      RUN_START(_Cla1mathTablesRunStart),
	                      PAGE = 1

	   CLAscratch       :
	                     { *.obj(CLAscratch)
	                     . += CLA_SCRATCHPAD_SIZE;
	                     *.obj(CLAscratch_end) } > CLARAM0,
						 PAGE = 1

}

when i single step through code it works fine and reaches the auto baud portion, but when I run the code, it jumps to the waitboot function of the default bootloader, can't figure out why. Please let me know if anyone can help.

Thanks,

Najeeb

Najeeb,

I've edited that post and corrected the link.  Please try it now.

Best,

Matthew