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Loading Two Projects in one Debug mode for Boot loader Simulation

Mahesh M

Is it possible to load two project in one debug mode to simulate Boot loader and Application simulation

Parents
  • 0 in reply to Mahesh M

    Configuration for the Boot loader is
    Flash - Start Address - 0x0000 Length - 0x1000

    Configuration for Application is
    Flash - Start Address - 0x1000 Length - 0x7000

    When Boot Loader programs a valid application in flash it will jump to Application i.e. 0x1000 location

    /* Load main stack pointer with application stack pointer initial value,
stored at first location of application area */
                asm volatile("ldr r0, =0x1000");
                asm volatile("ldr r0, [r0]");
                asm volatile("mov sp, r0");

/* Load program counter with application reset vector address, located at
second word of application area. */
                asm volatile("ldr r0, =0x1004");
                asm volatile("ldr r0, [r0]");
                asm volatile("mov pc, r0");


    But when we check the location in 0x1000 and 0x1004 instead of branch instruction LSLS instruction is present , please have a look below

    0x00001000 0270      LSLS     r0,r6,#9rload_rt2_thumb_only (0x000000C8)
0x00001004 0169      LSLS     r1,r5,#5rload_rt2_thumb_only (0x000000C8)

Reply
  • 0 in reply to Mahesh M

    Configuration for the Boot loader is
    Flash - Start Address - 0x0000 Length - 0x1000

    Configuration for Application is
    Flash - Start Address - 0x1000 Length - 0x7000

    When Boot Loader programs a valid application in flash it will jump to Application i.e. 0x1000 location

    /* Load main stack pointer with application stack pointer initial value,
stored at first location of application area */
                asm volatile("ldr r0, =0x1000");
                asm volatile("ldr r0, [r0]");
                asm volatile("mov sp, r0");

/* Load program counter with application reset vector address, located at
second word of application area. */
                asm volatile("ldr r0, =0x1004");
                asm volatile("ldr r0, [r0]");
                asm volatile("mov pc, r0");


    But when we check the location in 0x1000 and 0x1004 instead of branch instruction LSLS instruction is present , please have a look below

    0x00001000 0270      LSLS     r0,r6,#9rload_rt2_thumb_only (0x000000C8)
0x00001004 0169      LSLS     r1,r5,#5rload_rt2_thumb_only (0x000000C8)

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