• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 78 subscribers
  • Views 1187 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BSL Protect function not running, msp430f5438a

Ben Colburn
Prodigy 110 points
Other Parts Discussed in Thread: MSP430F5438A

Hi all,

We've got an MSP430F5438A chip on our own board with JTAG and CANBUS communication (read: no UART comms).

I'm attempting to write a BSL that allows for program upgrades via CANBUS but I seem to have something fundamentally incorrect.
I've based my code on example shown in the custom BSL wiki (processors.wiki.ti.com/index.php/Custom_MSP430_BSL), but it appears to me like the BSL protect function does not get run.

In an effort to determine if the BSL protect function is run, I've modified it to simply erase the info b segment.
The assembly code I use to clear info b is known to work as I can call it from C++, and it clears the "RUNBSL" string from flash.

My process is: memcpy "RUNBSL" to 0x1900 (6 bytes), memcpy 0xC35A to 0x17F6 (2 bytes), memcpy 0x3CA5 to 0x17F4 (2 bytes), and then manually power cycle the device.
I know the values are written correctly as I have my code read those locations and send CANBUS messages to my PC with the values.
I also see the values there through the CCS debugger.

It simply appears that the BSL Protect function is not run as the "RUNBSL" string is still there when the main application runs again.

Another oddity (I'm not sure this is related but felt it was worth mentioning) is that the .asm file specifies the C35A/3CA5 values for the locations 0x17F4/0x17F6, but those values are not there when the software is flashed and runs.
I have to write those values with the same function that writes the "RUNBSL" string to 0x1900.

Any ideas what I'm doing wrong here?

Attached is the relevant code (mem_map.cmd renamed to mem_map_cmd.txt so it would upload).1715.sb_assembly.asm1715.app_code.cpp

mem_map_cmd.txt 
/* ============================================================================ */
/* Copyright (c) 2014, 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.                          */
/* ============================================================================ */

/******************************************************************************/
/* lnk_msp430f5438a.cmd - LINKER COMMAND FILE FOR LINKING MSP430F5438A PROGRAMS     */
/*                                                                            */
/*   Usage:  lnk430 <obj files...>    -o <out file> -m <map file> lnk.cmd     */
/*           cl430  <src files...> -z -o <out file> -m <map file> lnk.cmd     */
/*                                                                            */
/*----------------------------------------------------------------------------*/
/* These linker options are for command line linking only.  For IDE linking,  */
/* you should set your linker options in Project Properties                   */
/* -c                                               LINK USING C CONVENTIONS  */
/* -stack  0x0100                                   SOFTWARE STACK SIZE       */
/* -heap   0x0100                                   HEAP AREA SIZE            */
/*                                                                            */
/*----------------------------------------------------------------------------*/
/* Version: 1.127                                                             */
/*----------------------------------------------------------------------------*/

/****************************************************************************/
/* SPECIFY THE SYSTEM MEMORY MAP                                            */
/****************************************************************************/

MEMORY
{
    SFR                     : origin = 0x0000, length = 0x0010
    PERIPHERALS_8BIT        : origin = 0x0010, length = 0x00F0
    PERIPHERALS_16BIT       : origin = 0x0100, length = 0x0100

    ZAREA_MEM               : origin = 0x1000, length = 0x0010
    ZAREA_CODE_MEM          : origin = 0x1014, length = 0x0050
    BSLSIG                  : origin = 0x17F0, length = 0x0010

    RAM                     : origin = 0x1C00, length = 0x4000
    INFOA                   : origin = 0x1980, length = 0x0080
    INFOB                   : origin = 0x1900, length = 0x0080
    INFOC                   : origin = 0x1880, length = 0x0080
    INFOD                   : origin = 0x1800, length = 0x0080
    FLASH                   : origin = 0x5C00, length = 0xA380
    FLASH2                  : origin = 0x10000,length = 0x35C00
    INT00                   : origin = 0xFF80, length = 0x0002
    INT01                   : origin = 0xFF82, length = 0x0002
    INT02                   : origin = 0xFF84, length = 0x0002
    INT03                   : origin = 0xFF86, length = 0x0002
    INT04                   : origin = 0xFF88, length = 0x0002
    INT05                   : origin = 0xFF8A, length = 0x0002
    INT06                   : origin = 0xFF8C, length = 0x0002
    INT07                   : origin = 0xFF8E, length = 0x0002
    INT08                   : origin = 0xFF90, length = 0x0002
    INT09                   : origin = 0xFF92, length = 0x0002
    INT10                   : origin = 0xFF94, length = 0x0002
    INT11                   : origin = 0xFF96, length = 0x0002
    INT12                   : origin = 0xFF98, length = 0x0002
    INT13                   : origin = 0xFF9A, length = 0x0002
    INT14                   : origin = 0xFF9C, length = 0x0002
    INT15                   : origin = 0xFF9E, length = 0x0002
    INT16                   : origin = 0xFFA0, length = 0x0002
    INT17                   : origin = 0xFFA2, length = 0x0002
    INT18                   : origin = 0xFFA4, length = 0x0002
    INT19                   : origin = 0xFFA6, length = 0x0002
    INT20                   : origin = 0xFFA8, length = 0x0002
    INT21                   : origin = 0xFFAA, length = 0x0002
    INT22                   : origin = 0xFFAC, length = 0x0002
    INT23                   : origin = 0xFFAE, length = 0x0002
    INT24                   : origin = 0xFFB0, length = 0x0002
    INT25                   : origin = 0xFFB2, length = 0x0002
    INT26                   : origin = 0xFFB4, length = 0x0002
    INT27                   : origin = 0xFFB6, length = 0x0002
    INT28                   : origin = 0xFFB8, length = 0x0002
    INT29                   : origin = 0xFFBA, length = 0x0002
    INT30                   : origin = 0xFFBC, length = 0x0002
    INT31                   : origin = 0xFFBE, length = 0x0002
    INT32                   : origin = 0xFFC0, length = 0x0002
    INT33                   : origin = 0xFFC2, length = 0x0002
    INT34                   : origin = 0xFFC4, length = 0x0002
    INT35                   : origin = 0xFFC6, length = 0x0002
    INT36                   : origin = 0xFFC8, length = 0x0002
    INT37                   : origin = 0xFFCA, length = 0x0002
    INT38                   : origin = 0xFFCC, length = 0x0002
    INT39                   : origin = 0xFFCE, length = 0x0002
    INT40                   : origin = 0xFFD0, length = 0x0002
    INT41                   : origin = 0xFFD2, length = 0x0002
    INT42                   : origin = 0xFFD4, length = 0x0002
    INT43                   : origin = 0xFFD6, length = 0x0002
    INT44                   : origin = 0xFFD8, length = 0x0002
    INT45                   : origin = 0xFFDA, length = 0x0002
    INT46                   : origin = 0xFFDC, length = 0x0002
    INT47                   : origin = 0xFFDE, length = 0x0002
    INT48                   : origin = 0xFFE0, length = 0x0002
    INT49                   : origin = 0xFFE2, length = 0x0002
    INT50                   : origin = 0xFFE4, length = 0x0002
    INT51                   : origin = 0xFFE6, length = 0x0002
    INT52                   : origin = 0xFFE8, length = 0x0002
    INT53                   : origin = 0xFFEA, length = 0x0002
    INT54                   : origin = 0xFFEC, length = 0x0002
    INT55                   : origin = 0xFFEE, length = 0x0002
    INT56                   : origin = 0xFFF0, length = 0x0002
    INT57                   : origin = 0xFFF2, length = 0x0002
    INT58                   : origin = 0xFFF4, length = 0x0002
    INT59                   : origin = 0xFFF6, length = 0x0002
    INT60                   : origin = 0xFFF8, length = 0x0002
    INT61                   : origin = 0xFFFA, length = 0x0002
    INT62                   : origin = 0xFFFC, length = 0x0002
    RESET                   : origin = 0xFFFE, length = 0x0002
}

/****************************************************************************/
/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY                              */
/****************************************************************************/

SECTIONS
{
    .bss        : {} > RAM                /* GLOBAL & STATIC VARS              */
    .data       : {} > RAM                /* GLOBAL & STATIC VARS              */
    .sysmem     : {} > RAM                /* DYNAMIC MEMORY ALLOCATION AREA    */
    .stack      : {} > RAM (HIGH)         /* SOFTWARE SYSTEM STACK             */

    .text       : {}>> FLASH | FLASH2     /* CODE                              */
    .text:_isr  : {} > FLASH              /* ISR CODE SPACE                    */
    .cinit      : {} > FLASH | FLASH2     /* INITIALIZATION TABLES             */
    .const      : {} > FLASH | FLASH2     /* CONSTANT DATA                     */
    .cio        : {} > RAM                /* C I/O BUFFER                      */

    .pinit      : {} > FLASH              /* C++ CONSTRUCTOR TABLES            */
    .init_array : {} > FLASH              /* C++ CONSTRUCTOR TABLES            */
    .mspabi.exidx : {} > FLASH            /* C++ CONSTRUCTOR TABLES            */
    .mspabi.extab : {} > FLASH            /* C++ CONSTRUCTOR TABLES            */

    .infoA     : {} > INFOA              /* MSP430 INFO FLASH MEMORY SEGMENTS */
    .infoB     : {} > INFOB
    .infoC     : {} > INFOC
    .infoD     : {} > INFOD

    BSLSIG     : {} > BSLSIG             /* assembly code */
    ZAREA      : {} > ZAREA_MEM
    ZAREA_CODE : {} > ZAREA_CODE_MEM

    /* MSP430 INTERRUPT VECTORS          */
    .int00       : {}               > INT00
    .int01       : {}               > INT01
    .int02       : {}               > INT02
    .int03       : {}               > INT03
    .int04       : {}               > INT04
    .int05       : {}               > INT05
    .int06       : {}               > INT06
    .int07       : {}               > INT07
    .int08       : {}               > INT08
    .int09       : {}               > INT09
    .int10       : {}               > INT10
    .int11       : {}               > INT11
    .int12       : {}               > INT12
    .int13       : {}               > INT13
    .int14       : {}               > INT14
    .int15       : {}               > INT15
    .int16       : {}               > INT16
    .int17       : {}               > INT17
    .int18       : {}               > INT18
    .int19       : {}               > INT19
    .int20       : {}               > INT20
    .int21       : {}               > INT21
    .int22       : {}               > INT22
    .int23       : {}               > INT23
    .int24       : {}               > INT24
    .int25       : {}               > INT25
    .int26       : {}               > INT26
    .int27       : {}               > INT27
    .int28       : {}               > INT28
    .int29       : {}               > INT29
    .int30       : {}               > INT30
    .int31       : {}               > INT31
    .int32       : {}               > INT32
    .int33       : {}               > INT33
    .int34       : {}               > INT34
    .int35       : {}               > INT35
    .int36       : {}               > INT36
    .int37       : {}               > INT37
    .int38       : {}               > INT38
    .int39       : {}               > INT39
    .int40       : {}               > INT40
    RTC          : { * ( .int41 ) } > INT41 type = VECT_INIT
    PORT2        : { * ( .int42 ) } > INT42 type = VECT_INIT
    USCI_B3      : { * ( .int43 ) } > INT43 type = VECT_INIT
    USCI_A3      : { * ( .int44 ) } > INT44 type = VECT_INIT
    USCI_B1      : { * ( .int45 ) } > INT45 type = VECT_INIT
    USCI_A1      : { * ( .int46 ) } > INT46 type = VECT_INIT
    PORT1        : { * ( .int47 ) } > INT47 type = VECT_INIT
    TIMER1_A1    : { * ( .int48 ) } > INT48 type = VECT_INIT
    TIMER1_A0    : { * ( .int49 ) } > INT49 type = VECT_INIT
    DMA          : { * ( .int50 ) } > INT50 type = VECT_INIT
    USCI_B2      : { * ( .int51 ) } > INT51 type = VECT_INIT
    USCI_A2      : { * ( .int52 ) } > INT52 type = VECT_INIT
    TIMER0_A1    : { * ( .int53 ) } > INT53 type = VECT_INIT
    TIMER0_A0    : { * ( .int54 ) } > INT54 type = VECT_INIT
    ADC12        : { * ( .int55 ) } > INT55 type = VECT_INIT
    USCI_B0      : { * ( .int56 ) } > INT56 type = VECT_INIT
    USCI_A0      : { * ( .int57 ) } > INT57 type = VECT_INIT
    WDT          : { * ( .int58 ) } > INT58 type = VECT_INIT
    TIMER0_B1    : { * ( .int59 ) } > INT59 type = VECT_INIT
    TIMER0_B0    : { * ( .int60 ) } > INT60 type = VECT_INIT
    UNMI         : { * ( .int61 ) } > INT61 type = VECT_INIT
    SYSNMI       : { * ( .int62 ) } > INT62 type = VECT_INIT
    .reset       : {}               > RESET  /* MSP430 RESET VECTOR         */ 
}

/****************************************************************************/
/* INCLUDE PERIPHERALS MEMORY MAP                                           */
/****************************************************************************/

-l msp430f5438a.cmd

  • 0
    TI__Guru 72306 points
    Hi Ben,

    You are basing your BSL code off of the code from SLAA450, correct? Can you post the .map file for your custom BSL? (look in Debug folder in CCS, there should be a .map file that will show where different parts of your code are being placed).

    It's a little hard to tell what's going on - if you don't feel comfortable posting your full code online you could send me a private message with it. Alternately, you could post a "skeleton" version of your full BSL project.

    As a note, I am unsure if the BSL protect function is run for all types of resets and the debugger can interfere with that because it affects how the part resets. My standard test for seeing when BSL_Protect function is run, is to set an unused GPIO high in it (and don't touch the pin in your main code so that the state will stay the same). That way you can use an LED or scope etc to see if that pin is set (because at startup unused pins will default to inputs).

    Regards,
    Katie
  • 0 in reply to Katie Pier
    Prodigy 110 points

    Thanks for responding Katie.

    I am basing my code mainly on the TI wiki entry I mentioned above, and the example app code provided there, but that seems to draw almost all of its information from SLAA450.

    I had posted a "skeleton" version at the end of my initial post, but I'll put them up again here.

    The map I'm providing isn't for a BSL, but an app I've written to attempt to debug this BSL protect behavior.

    The BSL that I had written would occasionally blow the JTAG fuse (probably due to coding errors on my part concerning the BSLSIG section), rendering my board effectively useless, and given the expense to replace it, I quickly grew wary of running it until I had figured out what was wrong with the protect function.

    Correct me if I'm wrong, of course, it seems to me that an app should be able to replace the protect function, even though this is probably non-standard and not my final intention.

    I'd have to resurrect/rewrite it to provide you with an exact copy, but it matched what was on the wiki. I did add flash memory to it in a FLASH2 space starting at 0x10000 in order to have space for my canbus code.

    As a side question, do you know of any msp430 dev boards where the JTAG fuse can't be blown? The documentation I've seen seems to indicate such a thing doesn't exist, but I figure it can't hurt to ask.

    5342.app_code.cpp

    4784.mem_map_cmd.txt 
    /* ============================================================================ */
/* Copyright (c) 2014, 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.                          */
/* ============================================================================ */

/******************************************************************************/
/* lnk_msp430f5438a.cmd - LINKER COMMAND FILE FOR LINKING MSP430F5438A PROGRAMS     */
/*                                                                            */
/*   Usage:  lnk430 <obj files...>    -o <out file> -m <map file> lnk.cmd     */
/*           cl430  <src files...> -z -o <out file> -m <map file> lnk.cmd     */
/*                                                                            */
/*----------------------------------------------------------------------------*/
/* These linker options are for command line linking only.  For IDE linking,  */
/* you should set your linker options in Project Properties                   */
/* -c                                               LINK USING C CONVENTIONS  */
/* -stack  0x0100                                   SOFTWARE STACK SIZE       */
/* -heap   0x0100                                   HEAP AREA SIZE            */
/*                                                                            */
/*----------------------------------------------------------------------------*/
/* Version: 1.127                                                             */
/*----------------------------------------------------------------------------*/

/****************************************************************************/
/* SPECIFY THE SYSTEM MEMORY MAP                                            */
/****************************************************************************/

MEMORY
{
    SFR                     : origin = 0x0000, length = 0x0010
    PERIPHERALS_8BIT        : origin = 0x0010, length = 0x00F0
    PERIPHERALS_16BIT       : origin = 0x0100, length = 0x0100

    ZAREA_MEM               : origin = 0x1000, length = 0x0010
    ZAREA_CODE_MEM          : origin = 0x1014, length = 0x0050
    BSLSIG                  : origin = 0x17F0, length = 0x0010

    RAM                     : origin = 0x1C00, length = 0x4000
    INFOA                   : origin = 0x1980, length = 0x0080
    INFOB                   : origin = 0x1900, length = 0x0080
    INFOC                   : origin = 0x1880, length = 0x0080
    INFOD                   : origin = 0x1800, length = 0x0080
    FLASH                   : origin = 0x5C00, length = 0xA380
    FLASH2                  : origin = 0x10000,length = 0x35C00
    INT00                   : origin = 0xFF80, length = 0x0002
    INT01                   : origin = 0xFF82, length = 0x0002
    INT02                   : origin = 0xFF84, length = 0x0002
    INT03                   : origin = 0xFF86, length = 0x0002
    INT04                   : origin = 0xFF88, length = 0x0002
    INT05                   : origin = 0xFF8A, length = 0x0002
    INT06                   : origin = 0xFF8C, length = 0x0002
    INT07                   : origin = 0xFF8E, length = 0x0002
    INT08                   : origin = 0xFF90, length = 0x0002
    INT09                   : origin = 0xFF92, length = 0x0002
    INT10                   : origin = 0xFF94, length = 0x0002
    INT11                   : origin = 0xFF96, length = 0x0002
    INT12                   : origin = 0xFF98, length = 0x0002
    INT13                   : origin = 0xFF9A, length = 0x0002
    INT14                   : origin = 0xFF9C, length = 0x0002
    INT15                   : origin = 0xFF9E, length = 0x0002
    INT16                   : origin = 0xFFA0, length = 0x0002
    INT17                   : origin = 0xFFA2, length = 0x0002
    INT18                   : origin = 0xFFA4, length = 0x0002
    INT19                   : origin = 0xFFA6, length = 0x0002
    INT20                   : origin = 0xFFA8, length = 0x0002
    INT21                   : origin = 0xFFAA, length = 0x0002
    INT22                   : origin = 0xFFAC, length = 0x0002
    INT23                   : origin = 0xFFAE, length = 0x0002
    INT24                   : origin = 0xFFB0, length = 0x0002
    INT25                   : origin = 0xFFB2, length = 0x0002
    INT26                   : origin = 0xFFB4, length = 0x0002
    INT27                   : origin = 0xFFB6, length = 0x0002
    INT28                   : origin = 0xFFB8, length = 0x0002
    INT29                   : origin = 0xFFBA, length = 0x0002
    INT30                   : origin = 0xFFBC, length = 0x0002
    INT31                   : origin = 0xFFBE, length = 0x0002
    INT32                   : origin = 0xFFC0, length = 0x0002
    INT33                   : origin = 0xFFC2, length = 0x0002
    INT34                   : origin = 0xFFC4, length = 0x0002
    INT35                   : origin = 0xFFC6, length = 0x0002
    INT36                   : origin = 0xFFC8, length = 0x0002
    INT37                   : origin = 0xFFCA, length = 0x0002
    INT38                   : origin = 0xFFCC, length = 0x0002
    INT39                   : origin = 0xFFCE, length = 0x0002
    INT40                   : origin = 0xFFD0, length = 0x0002
    INT41                   : origin = 0xFFD2, length = 0x0002
    INT42                   : origin = 0xFFD4, length = 0x0002
    INT43                   : origin = 0xFFD6, length = 0x0002
    INT44                   : origin = 0xFFD8, length = 0x0002
    INT45                   : origin = 0xFFDA, length = 0x0002
    INT46                   : origin = 0xFFDC, length = 0x0002
    INT47                   : origin = 0xFFDE, length = 0x0002
    INT48                   : origin = 0xFFE0, length = 0x0002
    INT49                   : origin = 0xFFE2, length = 0x0002
    INT50                   : origin = 0xFFE4, length = 0x0002
    INT51                   : origin = 0xFFE6, length = 0x0002
    INT52                   : origin = 0xFFE8, length = 0x0002
    INT53                   : origin = 0xFFEA, length = 0x0002
    INT54                   : origin = 0xFFEC, length = 0x0002
    INT55                   : origin = 0xFFEE, length = 0x0002
    INT56                   : origin = 0xFFF0, length = 0x0002
    INT57                   : origin = 0xFFF2, length = 0x0002
    INT58                   : origin = 0xFFF4, length = 0x0002
    INT59                   : origin = 0xFFF6, length = 0x0002
    INT60                   : origin = 0xFFF8, length = 0x0002
    INT61                   : origin = 0xFFFA, length = 0x0002
    INT62                   : origin = 0xFFFC, length = 0x0002
    RESET                   : origin = 0xFFFE, length = 0x0002
}

/****************************************************************************/
/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY                              */
/****************************************************************************/

SECTIONS
{
    .bss        : {} > RAM                /* GLOBAL & STATIC VARS              */
    .data       : {} > RAM                /* GLOBAL & STATIC VARS              */
    .sysmem     : {} > RAM                /* DYNAMIC MEMORY ALLOCATION AREA    */
    .stack      : {} > RAM (HIGH)         /* SOFTWARE SYSTEM STACK             */

    .text       : {}>> FLASH | FLASH2     /* CODE                              */
    .text:_isr  : {} > FLASH              /* ISR CODE SPACE                    */
    .cinit      : {} > FLASH | FLASH2     /* INITIALIZATION TABLES             */
    .const      : {} > FLASH | FLASH2     /* CONSTANT DATA                     */
    .cio        : {} > RAM                /* C I/O BUFFER                      */

    .pinit      : {} > FLASH              /* C++ CONSTRUCTOR TABLES            */
    .init_array : {} > FLASH              /* C++ CONSTRUCTOR TABLES            */
    .mspabi.exidx : {} > FLASH            /* C++ CONSTRUCTOR TABLES            */
    .mspabi.extab : {} > FLASH            /* C++ CONSTRUCTOR TABLES            */

    .infoA     : {} > INFOA              /* MSP430 INFO FLASH MEMORY SEGMENTS */
    .infoB     : {} > INFOB
    .infoC     : {} > INFOC
    .infoD     : {} > INFOD

    BSLSIG     : {} > BSLSIG             /* assembly code */
    ZAREA      : {} > ZAREA_MEM
    ZAREA_CODE : {} > ZAREA_CODE_MEM

    /* MSP430 INTERRUPT VECTORS          */
    .int00       : {}               > INT00
    .int01       : {}               > INT01
    .int02       : {}               > INT02
    .int03       : {}               > INT03
    .int04       : {}               > INT04
    .int05       : {}               > INT05
    .int06       : {}               > INT06
    .int07       : {}               > INT07
    .int08       : {}               > INT08
    .int09       : {}               > INT09
    .int10       : {}               > INT10
    .int11       : {}               > INT11
    .int12       : {}               > INT12
    .int13       : {}               > INT13
    .int14       : {}               > INT14
    .int15       : {}               > INT15
    .int16       : {}               > INT16
    .int17       : {}               > INT17
    .int18       : {}               > INT18
    .int19       : {}               > INT19
    .int20       : {}               > INT20
    .int21       : {}               > INT21
    .int22       : {}               > INT22
    .int23       : {}               > INT23
    .int24       : {}               > INT24
    .int25       : {}               > INT25
    .int26       : {}               > INT26
    .int27       : {}               > INT27
    .int28       : {}               > INT28
    .int29       : {}               > INT29
    .int30       : {}               > INT30
    .int31       : {}               > INT31
    .int32       : {}               > INT32
    .int33       : {}               > INT33
    .int34       : {}               > INT34
    .int35       : {}               > INT35
    .int36       : {}               > INT36
    .int37       : {}               > INT37
    .int38       : {}               > INT38
    .int39       : {}               > INT39
    .int40       : {}               > INT40
    RTC          : { * ( .int41 ) } > INT41 type = VECT_INIT
    PORT2        : { * ( .int42 ) } > INT42 type = VECT_INIT
    USCI_B3      : { * ( .int43 ) } > INT43 type = VECT_INIT
    USCI_A3      : { * ( .int44 ) } > INT44 type = VECT_INIT
    USCI_B1      : { * ( .int45 ) } > INT45 type = VECT_INIT
    USCI_A1      : { * ( .int46 ) } > INT46 type = VECT_INIT
    PORT1        : { * ( .int47 ) } > INT47 type = VECT_INIT
    TIMER1_A1    : { * ( .int48 ) } > INT48 type = VECT_INIT
    TIMER1_A0    : { * ( .int49 ) } > INT49 type = VECT_INIT
    DMA          : { * ( .int50 ) } > INT50 type = VECT_INIT
    USCI_B2      : { * ( .int51 ) } > INT51 type = VECT_INIT
    USCI_A2      : { * ( .int52 ) } > INT52 type = VECT_INIT
    TIMER0_A1    : { * ( .int53 ) } > INT53 type = VECT_INIT
    TIMER0_A0    : { * ( .int54 ) } > INT54 type = VECT_INIT
    ADC12        : { * ( .int55 ) } > INT55 type = VECT_INIT
    USCI_B0      : { * ( .int56 ) } > INT56 type = VECT_INIT
    USCI_A0      : { * ( .int57 ) } > INT57 type = VECT_INIT
    WDT          : { * ( .int58 ) } > INT58 type = VECT_INIT
    TIMER0_B1    : { * ( .int59 ) } > INT59 type = VECT_INIT
    TIMER0_B0    : { * ( .int60 ) } > INT60 type = VECT_INIT
    UNMI         : { * ( .int61 ) } > INT61 type = VECT_INIT
    SYSNMI       : { * ( .int62 ) } > INT62 type = VECT_INIT
    .reset       : {}               > RESET  /* MSP430 RESET VECTOR         */ 
}

/****************************************************************************/
/* INCLUDE PERIPHERALS MEMORY MAP                                           */
/****************************************************************************/

-l msp430f5438a.cmd

    7418.sb_assembly.asm

  • 0 in reply to Ben Colburn
    TI__Guru 72306 points

    Hi Ben,

    You typically should be working from the zip file that comes with SLAA450 app note as your starting point for your BSL code itself (I actually thought that wiki page had been taken down because really you should be using the app note - I'm going to ask about this): For CCS, use the project in SLAA450/5xx_6xx_Example_BSL_Source/CCS_v5.5.0_BSL-5438A. You will want to import that into CCS and modify from there to create your custom BSL. It will have the special modified linker file needed to have things placed in the right areas of BSL memory, in addition it reserves the JTAG signature areas to be 0xFFFF so that you won't accidentally blow the JTAG fuse.  lnk_msp430f5418a.cmd It is better to use the whole BSL project as a starting point for your BSL because it already has project settings needed for using the BSL. Typically then you build a separate project for your main application, and that would use the default linker cmd file from CCS (no BSL area, no ZAREA or BSLSIG or anything - just writes to main flash)

    When you build the BSL, before loading it into the device, you can check the .txt file generated in the Debug folder to see that it is only writing to the correct addresses (only writing to BSL memory) and not overwriting your BSL signatures.

    Ben Colburn said:
    The map I'm providing isn't for a BSL, but an app I've written to attempt to debug this BSL protect behavior.

    I looked in this file when you posted it before but it looked like it was just the standard MSP430 linker command file. The .map file I'm looking for will end in ".map" and will be in the Debug folder when you build your BSL project (not main application). The reason I'm asking for a .map file of the BSL project (not your main application) is because we should see where you BSL project is placing things in memory - this would explain why you see fuse getting blown, the signatures not being written, etc. This is why I am asking for the whole project (for the BSL not main app)- so we could see the linker file, the project settings, etc to see if they are matching the project from the app note and set up correctly.

    Ben Colburn said:
    I'd have to resurrect/rewrite it to provide you with an exact copy, but it matched what was on the wiki. I did add flash memory to it in a FLASH2 space starting at 0x10000 in order to have space for my canbus code.

    Typically the BSL must all be contained inside the 2kB BSL Flash segment at 0x1000 and you can't really use other parts of code - the BSL area can only be entered from the ZAREA and if you jump to addresses outside the BSL area then you exit the BSL. So I'm not sure how you implemented this or that it's implemented correctly.

    I could see that if you are trying to implement a BSL that can do firmware updates via CAN and need to support a CAN protocol (using some external CAN transceiver) that you might have quickly run out of space in the BSL area. In this case however, I'd recommend that instead of using the Custom BSL from SLAA450, that instead you look into something called MSP-BOOT www.ti.com/lit/pdf/slaa600. This is for implementing a main memory area bootloader (which means no more BSL_Protect function needed, and no more writing to the BSL area where the JTAG fuse signatures are stored, so easier to develop safely). When you use that, you should be able to use as much of your main memory flash as you need to - much larger than 2kB. So that is more the route that I would likely take.

    Ben Colburn said:
    As a side question, do you know of any msp430 dev boards where the JTAG fuse can't be blown? The documentation I've seen seems to indicate such a thing doesn't exist, but I figure it can't hurt to ask.

    All MSP430s have some sort of JTAG fuse - this feature is used by customers to protect their code from being stolen and used in counterfeit products, or losing their IP. It is implemented differently in different MSP device families - for example 1xx/2xx/4xx have a physical fuse that is blown with a voltage, rather than writing to signatures - however on these devices the BSL is in ROM. The only parts with this custom BSL flash area are the F5xx/6xx family you are using. For other parts you'd need to do a main memory bootloader using the SLAA600 MSP-BOOT project I mentioned above, if you wanted a different BSL than what is already in ROM.

    Regards,

    Katie

**Attention** This is a public forum