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Original question:

MSPM0G1107: Startup Problem -> Bootloader seems running

MSPM0G3107:

saraswati pimple
Prodigy 50 points
Part Number: MSPM0G3107

Tool/software:

how to write main() into bootloder, i want custom bootloader

  • 0
    TI__Mastermind 24215 points

    Hi Saras,

    I can't understand your description here. Could you give more details, thanks.

    B.R.

    Sal

  • 0 in reply to Sal Ye
    Prodigy 50 points

    I am working on FOTA without bootloader. I write an Application1 code at 0x0000000. This application1 receive data over UART and write into flash at 0x00002000(which is my application2). Now I want to jump from app1 to app2. what are the steps required.

  • 0 in reply to saraswati pimple
    Prodigy 50 points

    MEMORY
    {
        FLASH           (RX)  : origin = 0x00000000, length = 0x00020000
        SRAM            (RWX) : origin = 0x20200000, length = 0x00008000
        BCR_CONFIG      (R)   : origin = 0x41C00000, length = 0x000000FF
        BSL_CONFIG      (R)   : origin = 0x41C00100, length = 0x00000080
    }

    SECTIONS
    {
        .intvecs:   > 0x00000000
        .text   : palign(8) {} > FLASH
        .const  : palign(8) {} > FLASH
        .cinit  : palign(8) {} > FLASH
        .pinit  : palign(8) {} > FLASH
        .rodata : palign(8) {} > FLASH
        .ARM.exidx    : palign(8) {} > FLASH
        .init_array   : palign(8) {} > FLASH
        .binit        : palign(8) {} > FLASH
        .TI.ramfunc   : load = FLASH, palign(8), run=SRAM, table(BINIT)

        .vtable :   > SRAM
        .args   :   > SRAM
        .data   :   > SRAM
        .bss    :   > SRAM
        .sysmem :   > SRAM
        .stack  :   > SRAM (HIGH)

        .BCRConfig  : {} > BCR_CONFIG
        .BSLConfig  : {} > BSL_CONFIG
    }
     
    this is my cmd
  • 0 in reply to saraswati pimple
    Prodigy 50 points

    for jumping I am using following code


        uint32_t newAppStackPointer = *((uint32_t *)(MAIN_BASE_ADDRESS));
        uint32_t newAppResetHandler = *((uint32_t *)(MAIN_BASE_ADDRESS + 4));

        NVIC_DisableIRQ(UART0_INT_IRQn);

        // Disable interrupts
        __disable_irq();

        // Set Main Stack Pointer (MSP) to the new app's value
        __set_MSP(newAppStackPointer);

        // Optional: Deinitialize peripherals, disable SysTick, disable interrupts, etc.

        // Jump to the new app's Reset Handler
        AppEntryFunction appEntry = (AppEntryFunction)newAppResetHandler;
        appEntry();
  • 0 in reply to saraswati pimple
    TI__Mastermind 24215 points

    Hi Sarawati,

    See the recommendation in our SDK example code:

    static void start_app(uint32_t *vector_table)
{
    /* The following code resets the SP to the value specified in the
     * provided vector table, and then the Reset Handler is invoked.
     *
     * Per ARM Cortex specification:
     *
     *           ARM Cortex VTOR
     *
     *
     *   Offset             Vector
     *
     * 0x00000000  ++++++++++++++++++++++++++
     *             |    Initial SP value    |
     * 0x00000004  ++++++++++++++++++++++++++
     *             |         Reset          |
     * 0x00000008  ++++++++++++++++++++++++++
     *             |          NMI           |
     *             ++++++++++++++++++++++++++
     *             |           .            |
     *             |           .            |
     *             |           .            |
     *
     * */

    /* Reset the SP with the value stored at vector_table[0] */
    __asm volatile(
        "LDR R3,[%[vectab],#0x0] \n"
        "MOV SP, R3       \n" ::[vectab] "r"(vector_table));

    /* Set the Reset Vector to the new vector table (Will be reset to 0x000) */
    SCB->VTOR = (uint32_t) vector_table;

    /* Jump to the Reset Handler address at vector_table[1] */

    ((void (*)(void))(*(vector_table + 1)))();
}

    Link: https://dev.ti.com/tirex/explore/node?node=A__ACTHfq7Nnk5GvMBsiZuiIw__MSPM0-SDK__a3PaaoK__LATEST&placeholder=true 

    B.R.

    Sal