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MSP432P4111: MSP432 custom bootloader

Part Number: MSP432P4111
Other Parts Discussed in Thread: UNIFLASH

Hi all,

Our msp432 currently has two bin files residing in its memory. The first one being a boot bin file which switches to the main bin file located at a the memory location 

0x00080000. The first bin file has the following instruction to initiate the switch which was borrowed from  the steps mentioned in this link https://e2e.ti.com/support/microcontrollers/msp430/f/166/t/535669 .
SCB->VTOR = 0x00080000;
__asm (
"mov r0, #0x0000\n"
"movt r0, #0x0008\n"
"ldr r1, [r0, #0]\n"
"mov sp, r1\n"
"ldr r1, [r0,#4]\n"
"blx r1\n"
);
I have attached the two linker scripts(0x800- 2bin file linker script, 0x00- 1st bin file linker script)i am using to build the target bin files for reference. The bin files are loaded via uniflash and for the second bin file the load address is specified as 0x00080000 on uniflash making sure the second bin file resides in the right location.
/******************************************************************************
*
* Copyright (C) 2012 - 2018 Texas Instruments Incorporated - http://www.ti.com/
*
* 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.
*
* GCC linker script for Texas Instruments MSP432P4111
*
* File creation date: 01/26/18
*
******************************************************************************/

MEMORY
{
   MAIN_FLASH (RX) : ORIGIN = 0x00080000, LENGTH = 0x00200000
   INFO_FLASH (RX) : ORIGIN = 0x00200000, LENGTH = 0x00004000
   SRAM_CODE (RWX): ORIGIN = 0x01000000, LENGTH = 0x00010000
   SRAM_DATA (RW) : ORIGIN = 0x20000000, LENGTH = 0x00040000
}

REGION_ALIAS("REGION_TEXT", MAIN_FLASH);
REGION_ALIAS("REGION_INFO", INFO_FLASH);
REGION_ALIAS("REGION_BSS", SRAM_DATA);
REGION_ALIAS("REGION_DATA", SRAM_DATA);
REGION_ALIAS("REGION_STACK", SRAM_DATA);
REGION_ALIAS("REGION_HEAP", SRAM_DATA);
REGION_ALIAS("REGION_ARM_EXIDX", MAIN_FLASH);
REGION_ALIAS("REGION_ARM_EXTAB", MAIN_FLASH);

SECTIONS {

    /* section for the interrupt vector area                                 */
    PROVIDE (_intvecs_base_address =
        DEFINED(_intvecs_base_address) ? _intvecs_base_address : 0x00080000);

    .intvecs (_intvecs_base_address) : AT (_intvecs_base_address) {
        KEEP (*(.intvecs))
    } > REGION_TEXT

    /* The following three sections show the usage of the INFO flash memory  */
    /* INFO flash memory is intended to be used for the following            */
    /* device specific purposes:                                             */
    /* Flash mailbox for device security operations                          */
    PROVIDE (_mailbox_base_address = 0x00200000);

    .flashMailbox (_mailbox_base_address) : AT (_mailbox_base_address) {
        KEEP (*(.flashMailbox))
    } > REGION_TEXT

    /* TLV table for device identification and characterization              */
    PROVIDE (_tlv_base_address = 0x00201000);

    .tlvTable (_tlv_base_address) (NOLOAD) : AT (_tlv_base_address) {
        KEEP (*(.tlvTable))
    } > REGION_TEXT

    /* BSL area for device bootstrap loader                                  */
    PROVIDE (_bsl_base_address = 0x00202000);

    .bslArea (_bsl_base_address) : AT (_bsl_base_address) {
        KEEP (*(.bslArea))
    } > REGION_TEXT

    PROVIDE (_vtable_base_address =
        DEFINED(_vtable_base_address) ? _vtable_base_address : 0x20000000);

    .vtable (_vtable_base_address) : AT (_vtable_base_address) {
        KEEP (*(.vtable))
    } > REGION_DATA

    .text : {
        CREATE_OBJECT_SYMBOLS
        KEEP (*(.text))
        *(.text.*)
        . = ALIGN(0x4);
        KEEP (*(.ctors))
        . = ALIGN(0x4);
        KEEP (*(.dtors))
        . = ALIGN(0x4);
        __init_array_start = .;
        KEEP (*(.init_array*))
        __init_array_end = .;
        KEEP (*(.init))
        KEEP (*(.fini*))
    } > REGION_TEXT AT> REGION_TEXT

    .rodata : {
        *(.rodata)
        *(.rodata.*)
    } > REGION_TEXT AT> REGION_TEXT

    .ARM.exidx : {
        __exidx_start = .;
        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
        __exidx_end = .;
    } > REGION_ARM_EXIDX AT> REGION_ARM_EXIDX

    .ARM.extab : {
        KEEP (*(.ARM.extab* .gnu.linkonce.armextab.*))
    } > REGION_ARM_EXTAB AT> REGION_ARM_EXTAB

    __etext = .;

    .data : {
        __data_load__ = LOADADDR (.data);
        __data_start__ = .;
        KEEP (*(.data))
        KEEP (*(.data*))
        . = ALIGN (4);
        __data_end__ = .;
    } > REGION_DATA AT> REGION_TEXT

    .bss : {
        __bss_start__ = .;
        *(.shbss)
        KEEP (*(.bss))
        *(.bss.*)
        *(COMMON)
        . = ALIGN (4);
        __bss_end__ = .;
    } > REGION_BSS AT> REGION_BSS

    .heap : {
        __heap_start__ = .;
        end = __heap_start__;
        _end = end;
        __end = end;
        KEEP (*(.heap))
        __heap_end__ = .;
        __HeapLimit = __heap_end__;
    } > REGION_HEAP AT> REGION_HEAP

    .stack (NOLOAD) : ALIGN(0x8) {
        _stack = .;
        KEEP(*(.stack))
    } > REGION_STACK AT> REGION_STACK
	
	__StackTop = ORIGIN(REGION_STACK) + LENGTH(REGION_STACK);
    PROVIDE(__stack = __StackTop);
}


/******************************************************************************
*
* Copyright (C) 2012 - 2018 Texas Instruments Incorporated - http://www.ti.com/
*
* 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.
*
* GCC linker script for Texas Instruments MSP432P4111
*
* File creation date: 01/26/18
*
******************************************************************************/

MEMORY
{
    BOOT_FLASH (RX) : ORIGIN = 0x00000000, LENGTH = 0x00080000
    INFO_FLASH (RX) : ORIGIN = 0x00200000, LENGTH = 0x00008000
    SRAM_CODE  (RWX): ORIGIN = 0x01000000, LENGTH = 0x00040000
    SRAM_DATA  (RW) : ORIGIN = 0x20000000, LENGTH = 0x00010000
}

REGION_ALIAS("REGION_TEXT", BOOT_FLASH);
REGION_ALIAS("REGION_INFO", BOOT_FLASH);
REGION_ALIAS("REGION_BSS", SRAM_DATA);
REGION_ALIAS("REGION_DATA", SRAM_DATA);
REGION_ALIAS("REGION_STACK", SRAM_DATA);
REGION_ALIAS("REGION_HEAP", SRAM_DATA);
REGION_ALIAS("REGION_ARM_EXIDX", BOOT_FLASH);
REGION_ALIAS("REGION_ARM_EXTAB", BOOT_FLASH);

SECTIONS {

    /* section for the interrupt vector area                                 */
    PROVIDE (_intvecs_base_address =
        DEFINED(_intvecs_base_address) ? _intvecs_base_address : 0x0);

    .intvecs (_intvecs_base_address) : AT (_intvecs_base_address) {
        KEEP (*(.intvecs))
    } > REGION_TEXT

    /* The following three sections show the usage of the INFO flash memory  */
    /* INFO flash memory is intended to be used for the following            */
    /* device specific purposes:                                             */
    /* Flash mailbox for device security operations                          */
    PROVIDE (_mailbox_base_address = 0x200000);

    .flashMailbox (_mailbox_base_address) : AT (_mailbox_base_address) {
        KEEP (*(.flashMailbox))
    } > REGION_TEXT

    /* TLV table for device identification and characterization              */
    PROVIDE (_tlv_base_address = 0x00201000);

    .tlvTable (_tlv_base_address) (NOLOAD) : AT (_tlv_base_address) {
        KEEP (*(.tlvTable))
    } > REGION_TEXT

    /* BSL area for device bootstrap loader                                  */
    PROVIDE (_bsl_base_address = 0x00202000);

    .bslArea (_bsl_base_address) : AT (_bsl_base_address) {
        KEEP (*(.bslArea))
    } > REGION_TEXT

    PROVIDE (_vtable_base_address =
        DEFINED(_vtable_base_address) ? _vtable_base_address : 0x20000000);

    .vtable (_vtable_base_address) : AT (_vtable_base_address) {
        KEEP (*(.vtable))
    } > REGION_DATA

    .text : {
        CREATE_OBJECT_SYMBOLS
        KEEP (*(.text))
        *(.text.*)
        . = ALIGN(0x4);
        KEEP (*(.ctors))
        . = ALIGN(0x4);
        KEEP (*(.dtors))
        . = ALIGN(0x4);
        __init_array_start = .;
        KEEP (*(.init_array*))
        __init_array_end = .;
        KEEP (*(.init))
        KEEP (*(.fini*))
    } > REGION_TEXT AT> REGION_TEXT

    .rodata : {
        *(.rodata)
        *(.rodata.*)
    } > REGION_TEXT AT> REGION_TEXT

    .ARM.exidx : {
        __exidx_start = .;
        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
        __exidx_end = .;
    } > REGION_ARM_EXIDX AT> REGION_ARM_EXIDX

    .ARM.extab : {
        KEEP (*(.ARM.extab* .gnu.linkonce.armextab.*))
    } > REGION_ARM_EXTAB AT> REGION_ARM_EXTAB

    __etext = .;

    .data : {
        __data_load__ = LOADADDR (.data);
        __data_start__ = .;
        KEEP (*(.data))
        KEEP (*(.data*))
        . = ALIGN (4);
        __data_end__ = .;
    } > REGION_DATA AT> REGION_TEXT

    .bss : {
        __bss_start__ = .;
        *(.shbss)
        KEEP (*(.bss))
        *(.bss.*)
        *(COMMON)
        . = ALIGN (4);
        __bss_end__ = .;
    } > REGION_BSS AT> REGION_BSS

    .heap : {
        __heap_start__ = .;
        end = __heap_start__;
        _end = end;
        __end = end;
        KEEP (*(.heap))
        __heap_end__ = .;
        __HeapLimit = __heap_end__;
    } > REGION_HEAP AT> REGION_HEAP

    .stack (NOLOAD) : ALIGN(0x8) {
        _stack = .;
        KEEP(*(.stack))
    } > REGION_STACK AT> REGION_STACK
	
	__StackTop = ORIGIN(REGION_STACK) + LENGTH(REGION_STACK);
    PROVIDE(__stack = __StackTop);
}


Could you please let me know how to start the execution of the second bin file we seem to be missing something in the assembly language instruction set.
Thanks,
Neetha.

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