/** ***************************************************************************** ** ** File : stm32wb55xx_flash_cm4.ld ** ** Abstract : System Workbench Minimal System calls file ** ** For more information about which c-functions ** need which of these lowlevel functions ** please consult the Newlib libc-manual ** ** Environment : System Workbench for MCU ** ** Distribution: The file is distributed “as is,” without any warranty ** of any kind. ** ***************************************************************************** ** @attention ** ** Copyright (c) 2019 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 = 0x20030000; /* end of RAM */ /* Generate a link error if heap and stack don't fit into RAM */ _Min_Heap_Size = 0x400; /* required amount of heap */ _Min_Stack_Size = 0x1000; /* required amount of stack */ /* Specify the memory areas */ MEMORY { FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K RAM1 (xrw) : ORIGIN = 0x20000008, LENGTH = 0x2FFF8 RAM_SHARED (xrw) : ORIGIN = 0x20030000, LENGTH = 10K } /* Define output sections */ SECTIONS { /* The startup code goes first into FLASH */ .isr_vector : { . = ALIGN(4); KEEP(*(.isr_vector)) /* Startup code */ . = ALIGN(4); } >FLASH /* The program code and other data goes into FLASH */ .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 goes into FLASH */ .rodata : { . = ALIGN(4); *(.rodata) /* .rodata sections (constants, strings, etc.) */ *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ . = ALIGN(4); } >FLASH .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH .ARM : { __exidx_start = .; *(.ARM.exidx*) __exidx_end = .; } >FLASH .preinit_array : { PROVIDE_HIDDEN (__preinit_array_start = .); KEEP (*(.preinit_array*)) PROVIDE_HIDDEN (__preinit_array_end = .); } >FLASH .init_array : { PROVIDE_HIDDEN (__init_array_start = .); KEEP (*(SORT(.init_array.*))) KEEP (*(.init_array*)) PROVIDE_HIDDEN (__init_array_end = .); } >FLASH .fini_array : { PROVIDE_HIDDEN (__fini_array_start = .); KEEP (*(SORT(.fini_array.*))) KEEP (*(.fini_array*)) PROVIDE_HIDDEN (__fini_array_end = .); } >FLASH /* used by the startup to initialize data */ _sidata = LOADADDR(.data); /* Initialized data sections goes into RAM, load LMA copy after code */ .data : { . = ALIGN(4); _sdata = .; /* create a global symbol at data start */ *(.data) /* .data sections */ *(.data*) /* .data* sections */ . = ALIGN(4); _edata = .; /* define a global symbol at data end */ } >RAM1 AT> FLASH /* Uninitialized data section */ . = 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; } >RAM1 /* User_heap_stack section, used to check that there is enough RAM left */ ._user_heap_stack : { . = ALIGN(8); PROVIDE ( end = . ); PROVIDE ( _end = . ); . = . + _Min_Heap_Size; . = . + _Min_Stack_Size; . = ALIGN(8); } >RAM1 /* Remove information from the standard libraries */ /DISCARD/ : { libc.a ( * ) libm.a ( * ) libgcc.a ( * ) } .ARM.attributes 0 : { *(.ARM.attributes) } MAPPING_TABLE (NOLOAD) : { *(MAPPING_TABLE) } >RAM_SHARED MB_MEM1 (NOLOAD) : { *(MB_MEM1) } >RAM_SHARED MB_MEM2 (NOLOAD) : { _sMB_MEM2 = . ; *(MB_MEM2) ; _eMB_MEM2 = . ; } >RAM_SHARED }