Relocate code/function to a specific memory location in Code Warrior with K70

[ameybhopi]

Hello ,

I am working with k70 micro-controller. How can I relocate a specific code in user define memory location in ROM. I read the application note for linker command file but not getting exactly how to edit .lcf file for creating a memory segment and use it for specific function/code. I need help regarding this.Thank you.

Regards,

Amey Bhopi

[ZhangJennie]

hi Amey,

do you use Codewarrior or KDS?  if Codewarrior, do you use FSL ARM compiler or GCC compiler?

Have a great day,
Zhang Jun

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[ameybhopi]

Hello Zhang and Xin, thank you so much for the documentation but that is for .ld file:smileyconfused:, I am using Code Worrior. I need some help regarding .lcf file. The part of .lcf code is given in attachment hope you will get some idea.

[ZhangJennie]

Hi Amey,

you use CW FSL ARM compiler, please refer this document for lcf configuration:

http://cache.freescale.com/files/soft_dev_tools/doc/app_note/AN4498.pdf

can this help?

Have a great day,
Zhang Jun

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[ameybhopi]

Hi Zhang, I have read about "interrupt vector redirection method in Kinetis" which you have posted on community and its very useful.. I am working on k70 with mqx. I am not able to find kinetis_sysinit.c in my project (might be because its not a bareboard project). It would be really helpful for me if you explain where to configure VTOR register in order to relocate vector table. I have copied .lcf file below for your reference. Thank you.

MEMORY

{

   vectorrom   (RX): ORIGIN = 0x00000000, LENGTH = 0x00000400

   cfmprotrom  (R):  ORIGIN = 0x00000400, LENGTH = 0x00000020

   rom         (RX): ORIGIN = 0x00003000, LENGTH = 0x000FD000  # Code + Const data  

   ram         (RW): ORIGIN = 0x70000000, LENGTH = 0x08000000  # DDR2 - RW data

   # heap        (RW): ORIGIN = 0x73000000, LENGTH = 0x05000000

   sram        (RW): ORIGIN = 0x1FFF0000, LENGTH = 0x00020000  # SRAM - RW data

   # kernel space starts after RAM variables (Location of MQX Kernel data + MQX heap)

   #end_of_kd   (RW): ORIGIN = 0x77FFFFF0, LENGTH = 0x00000000

   end_of_kd   (RW): ORIGIN = 0x77FFFFF0, LENGTH = 0x00000000

   end_of_heap (RW): ORIGIN = 0x77FFFFF0, LENGTH=0x00000000

   # Boot stack reused by MQX Kernel data

   bstack      (RW): ORIGIN = 0x2000FA00, LENGTH = 0x00000200  # Boot stack

   end_bstack  (RW): ORIGIN = 0x2000FC00, LENGTH = 0x00000000

}

KEEP_SECTION { .vectors_rom, .vectors_ram, .cfmconfig }

SECTIONS

{

   __INTERNAL_SRAM_BASE  = 0x1FFF0000;

   __INTERNAL_SRAM_SIZE  = 0x00020000;

   __INTERNAL_FLASH_BASE = 0x00000000;

   __INTERNAL_FLASH_SIZE = 0x00100000;

   __INTERNAL_FLEXNVM_BASE = 0;

   __INTERNAL_FLEXNVM_SIZE = 0;

   __UNCACHED_DATA_END      = 0x2000FFF0;

   __EXTERNAL_MRAM_BASE  = 0x60000000;

   __EXTERNAL_MRAM_SIZE  = 0x00080000;

   __EXTERNAL_MRAM_ROM_BASE = 0x60000000;

   __EXTERNAL_MRAM_ROM_SIZE = 0x00000000;

   __EXTERNAL_MRAM_RAM_BASE = 0x60000000;

   __EXTERNAL_MRAM_RAM_SIZE = 0x00080000;

   __EXTERNAL_DDR2_RAM_BASE = 0x70000000;

   __EXTERNAL_DDR2_RAM_SIZE = 0x08000000;

   # __heap_addr = 0x73000000;

   # __heap_size = 0x05000000;

   __EXTERNAL_LCD_BASE = 0x60000000;

   __EXTERNAL_LCD_SIZE = 0x1FFFF;

   __EXTERNAL_LCD_DC_BASE = 0x60010000;

   # MQX link time configurations

   __DEFAULT_PROCESSOR_NUMBER = 1;

   # __DEFAULT_INTERRUPT_STACK_SIZE = 1024;

   __DEFAULT_INTERRUPT_STACK_SIZE = 4096;

   __KERNEL_DATA_VERIFY_ENABLE = 0;    # Test SDRAM read/write

   # Flashx configurations

   __FLASHX_SECT_SIZE = 0x1000;

    .vectors :

    {

        __VECTOR_TABLE_ROM_START = .;        # Runtime vector table in sram

        *(.vectors_rom)

        . = ALIGN (0x4);

    } > vectorrom

    .cfmprotect :

    {

        *(.cfmconfig)

        . = ALIGN (0x4);

    } > cfmprotrom

    .main_application :

    {

        *(KERNEL)

        *(S_BOOT)

        *(IPSUM)

        *(.text)

        *(.init)

        *(.fini)

        *(.eini)

        *(.ctors)

        *(.dtors)

        . = ALIGN(0x4);

        *(.rodata)

        . = ALIGN(0x4);

        *(.rdata)

        . = ALIGN(0x4);

        *(.exception)

        . = ALIGN(0x4);

        __exception_table_start__ = .;

        EXCEPTION

        __exception_table_end__ = .;

        __sinit__ = .;

        STATICINIT

        . = ALIGN(0x4);

        __COPY_OF_DATA = .;

    } > rom

    .main_application_data : AT(__COPY_OF_DATA)

    {

        . = ALIGN(128);

        __VECTOR_TABLE_RAM_START = .;        # Runtime vector table in sram

        *(.vectors_ram)

        __START_DATA = .;

        *(.data)

        __END_DATA = .;

        . = ALIGN(0x4);

        __START_SDATA = .;

        *(.sdata)

        __END_SDATA = .;

        . = ALIGN(0x4);

        __SDA_BASE  = .;

        __SDA_BASE_ = __SDA_BASE;

        . = ALIGN(16);

    } > ram

    .main_application_bss :

    {

        . = ALIGN(0x10);

        __START_SBSS = .;

        *(.sbss)

        *(SCOMMON)

        __END_SBSS = .;

        __START_BSS = .;

        *(.bss)

        *(COMMON)

        __END_BSS = .;

        . = ALIGN(16);

    } >> ram

    .kernel_data : #AT(ADDR(.main_application_bss) + SIZEOF(.main_application_bss))

    {

        __KERNEL_DATA_START = ALIGN(0x10);

    }

  .end_of_kernel_data :

    {

        __KERNEL_DATA_END = .;

    } > end_of_kd

    .boot_stack :

    {

        _stack_end = .;

    } > bstack

    .end_of_boot_stack :

    {

        _stack_addr  = .;

        __SP_INIT    = .;

        __BOOT_STACK_ADDRESS = .;

    } > end_bstack

    .sram_data :

    {

        . = ALIGN(512);

        __BDT_BASE = .;

        *(.usb_bdt)

        __BDT_END = .;

        __SRAM_POOL = .;

        __UNCACHED_DATA_START = .;

    } > sram

    # Locate the ROM copy table into ROM after the initialized data

    _romp_at = __COPY_OF_DATA + SIZEOF(.main_application_data);

    .romp : AT (_romp_at)

    {

        __S_romp = _romp_at;

        WRITEW(__COPY_OF_DATA);                    #ROM start address

        WRITEW(ADDR(.main_application_data));      #RAM start address

        WRITEW(SIZEOF(.main_application_data));    #size

        WRITEW(0);

        WRITEW(0);

        WRITEW(0);

    } >> ram

    _flashx_start = __COPY_OF_DATA + SIZEOF(.main_application_data) + SIZEOF(.romp);

    # flashx working area spans across the whole rest of Flash memory

    __FLASHX_START_ADDR = ((_flashx_start + __FLASHX_SECT_SIZE - 1) / __FLASHX_SECT_SIZE) * __FLASHX_SECT_SIZE;

    __FLASHX_END_ADDR = __INTERNAL_FLASH_BASE + __INTERNAL_FLASH_SIZE;

}

/* EOF */

[ameybhopi]

Hello Zhang My application is flashing from address 0x00000000 I want to change it from eg. 0x00001000 . I have done changes in linker command file but it is not taking effect. Could you please tell me what is happening or is it necessary to do changes in other file also other than linker command file?:smileyplain:  

[ameybhopi]

Hello Zhang Actually i was trying with the bare board project with reference to the previous document. Actually i read this application note of lcf but i did not got any solution :smileyconfused: I will try again with this and get back soon. Thank you.:smileygrin:

[TICS_Fiona]

Could you please refer to the doc below? 

https://community.freescale.com/docs/DOC-101433

Fiona Kuang

Technical Information & Commercial Support

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