Region `FLASH' overflowed for external flash

[Chandan Bhatia1]

Hello, region `FLASH' overflowed by 424008 bytes but i didn't added much image. I am using 128 Mb N25Q128A13EF840E QSPI flash. I just wanted to confirm how much QSPI is assigned.

I can see below settings for QSPI.

I want to know that Where should I check in my firmware to know assigned external flash size. I can't find in linker file?

Also I want to see which all data is saved in QSPI 128Mbit .

Any help

[Uwe Bonnes]

Probably either your linker file is wrong and does not expose QSPI or you do not explicit place your table in QSPI.

[Chandan Bhatia1]

Yes but it all generated by CUBEMX. There is some section called `ExtFlashSection' but I am unable to see it in linker file.

[Martin KJELDSEN]

Show us the linker script - CubeMX does not know anything about QSPI flash chips, only general configuration for the controller on the mcu.

[Chandan Bhatia1]

Attaching my linker script.

[Chandan Bhatia1]

@Martin KJELDSEN​  Did you get the chance to check ?

[Chandan Bhatia1]

I dig a bit more and check using gcc objdump command. Here u can see external flash size is 0xCEB08 which I think In bytes. So this does not cross 128Mbit.

Note : In this case I removed most of images and as per compiler its almost filled.

[Chandan Bhatia1]

I dig a bit more and check using gcc objdump command. Here u can see external flash size is 0xCEB08 which I think In bytes. So this does not cross 128Mbit.

Note : In this case I removed most of images and as per compiler its almost filled.

[Martin KJELDSEN]

Yep.

/* Specify the memory areas */
MEMORY
{
    RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 320K
    FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 1024K
}

There's no mention of external flash here or where to put images.

Try adding:

/* Memories definition */
MEMORY
{
  RAM     (xrw)  : ORIGIN = 0x20000000,  LENGTH = 320K
  FLASH   (rx)   : ORIGIN = 0x8000000,   LENGTH = 1024K
  QUADSPI (r)    : ORIGIN = 0x90000000,  LENGTH = 16M
}
 
... 
 
  ExtFlashSection :
	{
		*(ExtFlashSection ExtFlashSection.*)
		*(.gnu.linkonce.r.*)
        . = ALIGN(0x4);
	} >QUADSPI
 
  FontFlashSection :
	{
		*(FontFlashSection FontFlashSection.*)
		*(.gnu.linkonce.r.*)
        . = ALIGN(0x4);
	} >QUADSPI
 
  TextFlashSection :
	{
		*(TextFlashSection TextFlashSection.*)
		*(.gnu.linkonce.r.*)
        . = ALIGN(0x4);
	} >QUADSPI