I have followed the article (https://community.st.com/t5/stm32-mcus/how-to-create-a-project-for-stm32h7-with-ethernet-and-lwip-stack/ta-p/49308#memory-layout ) to get it working for ethernet but I am facing hardfault. In H7S3L8 I am using AXI-SRAM at address 0x24020000 for ethernet buffers and lwip and configuring this sram as non cacheable, non bufferable and shareable at level 1
I am getting hardfault. I is related to memory but I am not able to resolve it. Any help me to find where is the problem?
Linker file is shown below
/*
******************************************************************************
**
** @file : LinkerScript.ld
**
** @author : STM32CubeIDE
**
** Abstract : Linker script for STM32H7Sxx Device
** 64Kbytes FLASH
** 456Kbytes RAM
**
** Set heap size, stack size and stack location according
** to application requirements.
**
** Set memory bank area and size if external memory is used
**
** Target : STMicroelectronics STM32
**
** Distribution: The file is distributed as is, without any warranty
** of any kind.
**
******************************************************************************
** @attention
**
** Copyright (c) 2025 STMicroelectronics.
** All rights reserved.
**
** This software is licensed under terms that can be found in the LICENSE file
** in the root directory of this software component.
** If no LICENSE file comes with this software, it is provided AS-IS.
**
******************************************************************************
*/
/* Entry Point */
ENTRY(Reset_Handler)
/* Highest address of the user mode stack */
_estack = ORIGIN(DTCM) + LENGTH(DTCM); /* end of Ram type memory */
_Min_Heap_Size = 0x200; /* required amount of heap */
_Min_Stack_Size = 0x400; /* required amount of stack */
/*__FLASH_BEGIN = 0x08000000;*/
/*__FLASH_SIZE = 0x00010000;*/
__FLASH_BEGIN = 0x00000000;
__FLASH_SIZE = 0x00030000;
__RAM_BEGIN = 0x24000000;
__RAM_SIZE = 0x71C00;
__RAM_NONCACHEABLEBUFFER_SIZE = 0x400;
/* Memories definition */
MEMORY
{
RAM (xrw) : ORIGIN = __RAM_BEGIN, LENGTH = __RAM_SIZE
RAM_NONCACHEABLEBUFFER (xrw) : ORIGIN = __RAM_BEGIN + __RAM_SIZE, LENGTH = __RAM_NONCACHEABLEBUFFER_SIZE
ITCM (xrw) : ORIGIN = 0x00000000, LENGTH = 0x00030000
DTCM (rw) : ORIGIN = 0x20000000, LENGTH = 0x00030000
SRAMAHB (rw) : ORIGIN = 0x30000000, LENGTH = 0x00008000
BKPSRAM (rw) : ORIGIN = 0x38800000, LENGTH = 0x00001000
SRAMAXI (rw) : ORIGIN = 0x24020000, LENGTH = 0x00020000
FLASH (xrw) : ORIGIN = __FLASH_BEGIN, LENGTH = __FLASH_SIZE
}
/* Sections */
SECTIONS
{
/* The startup code into "FLASH" Rom type memory */
.isr_vector :
{
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >FLASH
.lwip_sec (NOLOAD):
{
. = ABSOLUTE(0x24020000);
*(.RxDescripSection)
. = ABSOLUTE(0x24020080);
*(.TxDescripSection)
. = ABSOLUTE(0x24020100);
*(.Rx_PoolSection)
} >SRAMAXI
.hf_debug (NOLOAD) : { *(.hf_debug*) } > DTCM
/* The program code and other data into "FLASH" Rom type memory */
.text :
{
. = ALIGN(4);
*(.text) /* .text sections (code) */
*(.text*) /* .text* sections (code) */
*(.glue_7) /* glue arm to thumb code */
*(.glue_7t) /* glue thumb to arm code */
*(.eh_frame)
KEEP (*(.init))
KEEP (*(.fini))
. = ALIGN(4);
_etext = .; /* define a global symbols at end of code */
} >FLASH
/* Constant data into "FLASH" Rom type memory */
.rodata :
{
. = ALIGN(4);
*(.rodata) /* .rodata sections (constants, strings, etc.) */
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
. = ALIGN(4);
} >FLASH
.ARM.extab (READONLY) : /* The READONLY keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
{
. = ALIGN(4);
*(.ARM.extab* .gnu.linkonce.armextab.*)
. = ALIGN(4);
} >FLASH
.ARM (READONLY) : /* The READONLY keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
{
. = ALIGN(4);
__exidx_start = .;
*(.ARM.exidx*)
__exidx_end = .;
. = ALIGN(4);
} >FLASH
.preinit_array (READONLY) : /* The READONLY keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
{
. = ALIGN(4);
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array*))
PROVIDE_HIDDEN (__preinit_array_end = .);
. = ALIGN(4);
} >FLASH
.init_array (READONLY) : /* The READONLY keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
{
. = ALIGN(4);
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array*))
PROVIDE_HIDDEN (__init_array_end = .);
. = ALIGN(4);
} >FLASH
.fini_array (READONLY) : /* The READONLY keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
{
. = ALIGN(4);
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT(.fini_array.*)))
KEEP (*(.fini_array*))
PROVIDE_HIDDEN (__fini_array_end = .);
. = ALIGN(4);
} >FLASH
/* Used by the startup to initialize data */
_sidata = LOADADDR(.data);
/* Initialized data sections into "RAM" Ram type memory */
.data :
{
. = ALIGN(4);
_sdata = .; /* create a global symbol at data start */
*(.data) /* .data sections */
*(.data*) /* .data* sections */
*(.RamFunc) /* .RamFunc sections */
*(.RamFunc*) /* .RamFunc* sections */
. = ALIGN(4);
_edata = .; /* define a global symbol at data end */
} >RAM AT> FLASH
/* Uninitialized data section into "RAM" Ram type memory */
. = ALIGN(4);
.bss :
{
/* This is used by the startup in order to initialize the .bss section */
_sbss = .; /* define a global symbol at bss start */
__bss_start__ = _sbss;
*(.bss)
*(.bss*)
*(COMMON)
. = ALIGN(4);
_ebss = .; /* define a global symbol at bss end */
__bss_end__ = _ebss;
} >RAM
RW_NONCACHEABLE :
{
__NONCACHEABLEBUFFER_BEGIN = .;/* create symbol for start of section */
KEEP(*(noncacheable_buffer))
__NONCACHEABLEBUFFER_END = .; /* create symbol for start of section */
} > RAM_NONCACHEABLEBUFFER
/* User_heap_stack section, used to check that there is enough Ram type memory left */
._user_heap_stack :
{
. = ALIGN(8);
PROVIDE ( end = . );
PROVIDE ( _end = . );
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(8);
} >DTCM
/* Remove information from the compiler libraries */
/DISCARD/ :
{
libc.a ( * )
libm.a ( * )
libgcc.a ( * )
}
.ARM.attributes 0 : { *(.ARM.attributes) }
}
