Friday, March 23rd 2018, 6:20am UTC+1

You are not logged in.

  • Login
  • Register

Dear visitor, welcome to SEGGER Forum. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.



Date of registration: Jan 4th 2018

Posts: 5


Tuesday, February 20th 2018, 9:51pm

Create IVT and QSPI config on RT1052 Eval Board

I am trying to add a segment to a build for a RT1052 board.
On the RT1052 you need to have a config section for QSPI which is located at the start of flash ( 0x60000000 ) which is 512 bytes long
I inserted this section above the vector assignments in (MIMXRT1052_Vectors.s)

Additionally you need to have IVT, which has info about the image in flash.

I modified my flash_placement.xml file to add this segment, as follows.
<ProgramSection alignment="4" load="No" name=".boot_hdr" start="0x60001000" />
When I look into the map file it looks like the segment has been created but no data has been allocated for this section.

__vectors_load_start__ = 0x60000000;
.vectors 0x60000000 : AT(0x60000000)
__vectors_start__ = .;
*(.vectors .vectors.*)
__vectors_end__ = __vectors_start__ + SIZEOF(.vectors);
__vectors_size__ = SIZEOF(.vectors);
__vectors_load_end__ = __vectors_end__;

. = ASSERT(__vectors_start__ == __vectors_end__ || (__vectors_end__ >= __FLASH_segment_start__ && __vectors_end__ <= __FLASH_segment_end__) , "error: .vectors is too large to fit in FLASH memory segment");

.boot_hdr 0x0000000060001000 0x0
0x0000000060001000 __boot_hdr_start__ = .
*(.boot_hdr .boot_hdr.*)
0x0000000060001000 __boot_hdr_end__ = (__boot_hdr_start__ + SIZEOF (.boot_hdr))
0x0000000000000000 __boot_hdr_size__ = SIZEOF (.boot_hdr)
0x0000000060001000 __boot_hdr_load_end__ = __boot_hdr_end__
0x0000000000000001 . = ASSERT (((__boot_hdr_start__ == __boot_hdr_end__) || ((__boot_hdr_end__ >= __FLASH_segment_start__) && (__boot_hdr_end__ <= __FLASH_segment_end__))), error: .boot_hdr is too large to fit in FLASH memory segment)
0x0000000000000001 . = ASSERT ((__vectors_end__ <= __boot_hdr_start__), error: section .vectors overlaps absolute placed section .boot_hdr)
0x0000000060001000 __init_load_start__ = ALIGN (__boot_hdr_end__, 0x4)

Additionally when I look into the ld file that the placement.xml file creates it also has no data allocated.

__boot_hdr_load_start__ = 0x60001000;
.boot_hdr 0x60001000 : AT(0x60001000)
__boot_hdr_start__ = .;
*(.boot_hdr .boot_hdr.*)
__boot_hdr_end__ = __boot_hdr_start__ + SIZEOF(.boot_hdr);
__boot_hdr_size__ = SIZEOF(.boot_hdr);
__boot_hdr_load_end__ = __boot_hdr_end__;

. = ASSERT(__boot_hdr_start__ == __boot_hdr_end__ || (__boot_hdr_end__ >= __FLASH_segment_start__ && __boot_hdr_end__ <= __FLASH_segment_end__) , "error: .boot_hdr is too large to fit in FLASH memory segment");
. = ASSERT(__vectors_end__ <= __boot_hdr_start__ , "error: section .vectors overlaps absolute placed section .boot_hdr");

By looking at the ASSERT it looks like the linker thinks that the preceeding section (vectors) overlaps this section.
But that section starts at 0x60000000 and it has a length of 0x200.



Super Moderator

Date of registration: Jan 2nd 2017

Posts: 840


Friday, March 2nd 2018, 5:25pm

Hello Paul,

Thank you for your inquiry.
When setting up your section you wrote load="No", change that to "Yes".
Now the data should be allocated.

Does that work for you?

Best regards,