MSP430FR2433: Custom BSL using linker file for interrupt vector mapping

Hi,

I am not totally understand what you mean by the RESET information? Could you explain more about it? 

Why you need reset for two different locations? And by locations, does it mean the memory of boot code, app code and information code memory?

Best regards,

Cash Hao

Hi,

I have customized boot code and app code. both are pointing the same address of .reset vector.  

Here is the scenario,

In my flash memory

1. 0XC400 address contains boot code with some bytes 

2. 0xD800 address contains app code with some bytes.

if there is a firmware update request it's always pointing to the app reset vector address.

for boot code also same reset vector address.

my requirement is like it has to run the boot loader and then update the app code, but it's not happening so decided to have the back of both code vector information into the information memory and then access the respective code based the request raised.

Thanks.  

Hi,

Since your boot code start at 0xC400 which is the start address of FRAM. By default, when you power up the MCU, it will first runs into your boot code. 

In boot code you can determine to run app code or not. If you need to run app code, you can directly set the PC to 0xD800 which is the start address of app code. Then the MCU will run into app code. 

If you want to jump to boot code in app code, you can directly SW reset the MCU. Then it will start with boot code again. I do not think  set two reset vector address is needed in this case.

Best regards,

Cash Hao

Hi,

My request is, I want to write bootloader code and application code for the specified address with fresh microcontroller during manufacturing time via uniflasher tool. Then the microcontroller is in field the firmware update should be via bootloader. 

For the MSP430FR2433 microcontroller, we have application code and customized bootloader code.

1. 0XC400 address contains boot code with some bytes 

2. 0xD800 address contains app code with some bytes.

3. For both code the reset vector address is 0x FFFE.

The problem is, when we had flashed the binary via UNIFLASHER tool for the above specified address for the first time. 

Then, to update the binary using bootloader, reset vector address 0x FFFE is pointing to the main application, and it is not pointing to the bootloader code.

So, decide to locate the reset vector information with the INFO memory using the linker command. please find the below linker command for your reference. 

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/* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */
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/* 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_msp430fr2433.cmd - LINKER COMMAND FILE FOR LINKING MSP430FR2433 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: 1.213 */
/*----------------------------------------------------------------------------*/

/****************************************************************************/
/* Specify the system memory map */
/****************************************************************************/

MEMORY
{
SFR : origin = 0x0000, length = 0x0010
PERIPHERALS_8BIT : origin = 0x0010, length = 0x00F0
PERIPHERALS_16BIT : origin = 0x0100, length = 0x0100
RAM : origin = 0x2000, length = 0x1000
INFOA : origin = 0x1800, length = 0x0200
FRAM : origin = 0xD800, length = 0x1400 //0x3B80
JTAGSIGNATURE : origin = 0xFF80, length = 0x0004, fill = 0xFFFF
BSLSIGNATURE : origin = 0xFF84, length = 0x0004, fill = 0xFFFF
INT00 : origin = 0xFF88, length = 0x0002
INT01 : origin = 0xFF8A, length = 0x0002
INT02 : origin = 0xFF8C, length = 0x0002
INT03 : origin = 0xFF8E, length = 0x0002
INT04 : origin = 0xFF90, length = 0x0002
INT05 : origin = 0xFF92, length = 0x0002
INT06 : origin = 0xFF94, length = 0x0002
INT07 : origin = 0xFF96, length = 0x0002
INT08 : origin = 0xFF98, length = 0x0002
INT09 : origin = 0xFF9A, length = 0x0002
INT10 : origin = 0xFF9C, length = 0x0002
INT11 : origin = 0xFF9E, length = 0x0002
INT12 : origin = 0xFFA0, length = 0x0002
INT13 : origin = 0xFFA2, length = 0x0002
INT14 : origin = 0xFFA4, length = 0x0002
INT15 : origin = 0xFFA6, length = 0x0002
INT16 : origin = 0xFFA8, length = 0x0002
INT17 : origin = 0xFFAA, length = 0x0002
INT18 : origin = 0xFFAC, length = 0x0002
INT19 : origin = 0xFFAE, length = 0x0002
INT20 : origin = 0xFFB0, length = 0x0002
INT21 : origin = 0xFFB2, length = 0x0002
INT22 : origin = 0xFFB4, length = 0x0002
INT23 : origin = 0xFFB6, length = 0x0002
INT24 : origin = 0xFFB8, length = 0x0002
INT25 : origin = 0xFFBA, length = 0x0002
INT26 : origin = 0xFFBC, length = 0x0002
INT27 : origin = 0xFFBE, length = 0x0002
INT28 : origin = 0xFFC0, length = 0x0002
INT29 : origin = 0xFFC2, length = 0x0002
INT30 : origin = 0xFFC4, length = 0x0002
INT31 : origin = 0xFFC6, length = 0x0002
INT32 : origin = 0xFFC8, length = 0x0002
INT33 : origin = 0xFFCA, length = 0x0002
INT34 : origin = 0xFFCC, length = 0x0002
INT35 : origin = 0xFFCE, length = 0x0002
INT36 : origin = 0xFFD0, length = 0x0002
INT37 : origin = 0xFFD2, length = 0x0002
INT38 : origin = 0xFFD4, length = 0x0002
INT39 : origin = 0xFFD6, length = 0x0002
INT40 : origin = 0xFFD8, length = 0x0002
INT41 : origin = 0xFFDA, length = 0x0002
INT42 : origin = 0xFFDC, length = 0x0002
INT43 : origin = 0xFFDE, length = 0x0002
INT44 : origin = 0xFFE0, length = 0x0002
INT45 : origin = 0xFFE2, length = 0x0002
INT46 : origin = 0xFFE4, length = 0x0002
INT47 : origin = 0xFFE6, length = 0x0002
INT48 : origin = 0xFFE8, length = 0x0002
INT49 : origin = 0xFFEA, length = 0x0002
INT50 : origin = 0xFFEC, length = 0x0002
INT51 : origin = 0xFFEE, length = 0x0002
INT52 : origin = 0xFFF0, length = 0x0002
INT53 : origin = 0xFFF2, length = 0x0002
INT54 : origin = 0xFFF4, length = 0x0002
INT55 : origin = 0xFFF6, length = 0x0002
INT56 : origin = 0xFFF8, length = 0x0002
INT57 : origin = 0xFFFA, length = 0x0002
INT58 : origin = 0xFFFC, length = 0x0002
RESET : origin = 0xFFFE, length = 0x0002
}

/****************************************************************************/
/* Specify the sections allocation into memory */
/****************************************************************************/

SECTIONS
{
GROUP(ALL_FRAM)
{
GROUP(READ_WRITE_MEMORY)
{
.TI.persistent : {} /* For #pragma persistent */
}

GROUP(READ_ONLY_MEMORY)
{
.cinit : {} /* Initialization tables */
.pinit : {} /* C++ constructor tables */
.binit : {} /* Boot-time Initialization tables */
.init_array : {} /* C++ constructor tables */
.mspabi.exidx : {} /* C++ constructor tables */
.mspabi.extab : {} /* C++ constructor tables */
.const : {} /* Constant data */
}

GROUP(EXECUTABLE_MEMORY)
{
.text : {} /* Code */
}
} > FRAM

#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 15009000
#ifndef __LARGE_CODE_MODEL__
.TI.ramfunc : {} load=FRAM, run=RAM, table(BINIT)
#else
.TI.ramfunc : {} load=FRAM | FRAM2, run=RAM, table(BINIT)
#endif
#endif
#endif

.jtagsignature : {} > JTAGSIGNATURE /* JTAG Signature */
.bslsignature : {} > BSLSIGNATURE /* BSL Signature */

.bss : {} > RAM /* Global & static vars */
.data : {} > RAM /* Global & static vars */
.TI.noinit : {} > RAM /* For #pragma noinit */
.cio : {} > RAM /* C I/O buffer */
.sysmem : {} > RAM /* Dynamic memory allocation area */
.stack : {} > RAM (HIGH) /* Software system stack */

//.jtagsignature : {} > 0x1830 /* MSP430 Jtag signature copyed to info memory */
/*.bslsignature : {} > 0x1834
PORT2 : {} > 0x1838
PORT1 : {} > 0x183A
ADC : {} > 0x183C
USCI_B0 : {} > 0x183E
USCI_A1 : {} > 0x1840
USCI_A0 : {} > 0x1842
WDT : {} > 0x1844
RTC : {} > 0x1846
TIMER3_A1 : {} > 0x1848
TIMER3_A0 : {} > 0x184A
TIMER2_A1 : {} > 0x184C
TIMER2_A0 : {} > 0x184E
TIMER1_A1 : {} > 0x1850
TIMER1_A0 : {} > 0x1852
TIMER0_A1 : {} > 0x1854
TIMER0_A0 : {} > 0x1856
UNMI : {} > 0x1858
SYSNMI : {} > 0x185A
.reset : {} > 0x185C */ /* MSP43O reset vector copyed to info memory */

// .infoA (NOLOAD) : {} > INFOA /* MSP430 INFO FRAM Memory segments */

/* 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
PORT2 : { * ( .int41 ) } > INT41 type = VECT_INIT
PORT1 : { * ( .int42 ) } > INT42 type = VECT_INIT
ADC : { * ( .int43 ) } > INT43 type = VECT_INIT
USCI_B0 : { * ( .int44 ) } > INT44 type = VECT_INIT
USCI_A1 : { * ( .int45 ) } > INT45 type = VECT_INIT
USCI_A0 : { * ( .int46 ) } > INT46 type = VECT_INIT
WDT : { * ( .int47 ) } > INT47 type = VECT_INIT
RTC : { * ( .int48 ) } > INT48 type = VECT_INIT
TIMER3_A1 : { * ( .int49 ) } > INT49 type = VECT_INIT
TIMER3_A0 : { * ( .int50 ) } > INT50 type = VECT_INIT
TIMER2_A1 : { * ( .int51 ) } > INT51 type = VECT_INIT
TIMER2_A0 : { * ( .int52 ) } > INT52 type = VECT_INIT
TIMER1_A1 : { * ( .int53 ) } > INT53 type = VECT_INIT
TIMER1_A0 : { * ( .int54 ) } > INT54 type = VECT_INIT
TIMER0_A1 : { * ( .int55 ) } > INT55 type = VECT_INIT
TIMER0_A0 : { * ( .int56 ) } > INT56 type = VECT_INIT
UNMI : { * ( .int57 ) } > INT57 type = VECT_INIT
SYSNMI : { * ( .int58 ) } > INT58 type = VECT_INIT
.reset : {} > RESET /* MSP430 Reset vector */

.jtagsignature : {} > 0x1830 /* MSP430 vector table copyed to info memory */
.bslsignature : {} > 0x1834
PORT2 : {} > 0x1838
PORT1 : {} > 0x183A
ADC : {} > 0x183C
USCI_B0 : {} > 0x183E
USCI_A1 : {} > 0x1840
USCI_A0 : {} > 0x1842
WDT : {} > 0x1844
RTC : {} > 0x1846
TIMER3_A1 : {} > 0x1848
TIMER3_A0 : {} > 0x184A
TIMER2_A1 : {} > 0x184C
TIMER2_A0 : {} > 0x184E
TIMER1_A1 : {} > 0x1850
TIMER1_A0 : {} > 0x1852
TIMER0_A1 : {} > 0x1854
TIMER0_A0 : {} > 0x1856
UNMI : {} > 0x1858
SYSNMI : {} > 0x185A
.reset : {} > 0x185C /* MSP43O vector table copied to info memory */

}

/****************************************************************************/
/* Include peripherals memory map */
/****************************************************************************/

-l msp430fr2433.cmd

When we are trying to copy the reset vector information from the INFO memory, it is pointing reset vector address inside the info memory alone. not pointing the 0xFFFE.  

For the above linker cmd the reset vector address pointing either bootloader code or application, not both.

Please assist any changes to be done with linker command file or any other suggestions.

Thanks in advance.

Hi,

Okay understand.

In this document there are some BSL example code provided in it. You can check the demo app code which the .cmd file has been changed to a different location. You can try with it.

https://www.ti.com/lit/an/slaa721e/slaa721e.pdf

https://software-dl.ti.com/msp430/msp430_public_sw/mcu/msp430/MSP430FRBoot/latest/index_FDS.html

Best regards,

Cash Hao