AnsweredAssumed Answered

Relocate the startup of an application Program @ 0x1000

Question asked by Boon Heng Ng Employee on Jun 29, 2016
Latest reply on Jun 29, 2016 by Alice_Yang



I am trying to offset the startup application program to 0x1000 for KL27 (64K flash) freedom board.

Using KDS and SDK V1.3 processor expert.

The application program work good and well when I use debugging mode in KDS.

However, after POR or reset the application program is not running.

I have checked the flash memory of 0x1000 onward and it is filled with the application program code.

The 16 bytes  of 0x400-0x40F are also correct.

The address at 0x140D = 0x3D data.


From the link below, I found out that CPU reset the Stack pointer is loaded from the address 0x0000_0000 and the Program Counter is loaded from the address 0x0000_0004.

Relocate memery on KDS3.0



How can i initialize the stack pointer and program counter in KDS using SDK V1.3 when i relocate the memory to start @ 0x1000 address?





  1. ProcessorExpert.Id files


m_interrupts          (RX)  : ORIGIN = 0x00001000, LENGTH = 0x00000200

  m_flash_config (RX)  : ORIGIN = 0x00001400, LENGTH = 0x00000010

  m_interrupts_ram (RW)  : ORIGIN = 0x1FFFF000, LENGTH = 0x00000200

m_text (RX)  : ORIGIN = 0x00001410, LENGTH = 0x0000EBF0

m_data (RW)  : ORIGIN = 0x1FFFF200, LENGTH = 0x00003E00




Startup_MKL27Z644.S file.


/* Flash Configuration */

    .section .FlashConfig, "a"

    .long 0xFFFFFFFF

    .long 0xFFFFFFFF

    .long 0xFFFFFFFF

    .long 0xFFFF3DFE


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