MPC5748G Bootloader flash start address

[sohyunjang]

Hi, I use MPC5748G Bootloader.

and I want to fix Bootloader flash start address 0x00F94000 -> 0x00FC0000.

I fix 57xx_flash.ld

MEMORY
{

    flash_rchw : org = 0x00F90000,   len = 0x4
    cpu0_reset_vec : org = 0x00F90000+0x10,   len = 0x4
    cpu1_reset_vec : org = 0x00F90000+0x14,   len = 0x4
    cpu2_reset_vec : org = 0x00F90000+0x04,   len = 0x4     
       
  /*  m_text : org = 0x00F94000, len = 48K  */
    m_text : org = 0x00FC0000, len = 48K 
    m_data : org = 0x40000000,   len = 768K
}

So, How can I fix the flash start address??

What should I fix?

Thanks. you.

[petervlna]

Hi,

You have to change reset vector address of core0 to 0x00FC0000.

Once you change it your micro will start booting on 0x00FC0000 after reset. And you have correctly set m_text to this address so m_text section will be executed.

regards,

Peter

[sohyunjang]

Hi,

Now, cpu0_reset_vec : org = 0x00F90000+0x10

and, The reset vector is point address 0x00F94000

I am wondering how to change the address pointed to by the reset vector to 0x00FC0000.

Which part of the code should I change?

[petervlna]

You can find it in your flash_rchw section.

For example in my project I call it boot_header

Which I have defined in linker:

It starts at flash memory origin:

Peter