/* ARM code to run user code */
    /* This allows us to jump to the user's code in flash.  We have */
    /* to remap the flash before jumping. */
begin:
    adr r0, const
    ldr r1, [r0]    /* r1 points to MEMMAP register */
    mov r0, #1
    str r0, [r1]    /* remap interrupt vectors to flash */
    mov pc, #0      /* and then jump to the user's code */
const:
    .int    0xE01FC040  /* MEMMAP register */