kopia lustrzana https://github.com/mobilinkd/NucleoTNC
Add support for using SRAM2 separate from SRAM1.
Rob Riggs
rodzic
89a8cfbcbe
commit
5d38c4a1ad
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@ -34,3 +34,4 @@
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# STM32CubeMX garbage files
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*.launch
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.settings/
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*.s
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@ -1,168 +1,172 @@
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/*
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*****************************************************************************
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**
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** File : stm32_flash.ld
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**
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** Abstract : Linker script for STM32L432KC Device with
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** 256KByte FLASH, 64KByte RAM
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**
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** Set heap size, stack size and stack location according
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** to application requirements.
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**
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** Set memory bank area and size if external memory is used.
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**
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** Target : STMicroelectronics STM32
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**
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** Environment : Atollic TrueSTUDIO(R)
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**
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** Distribution: The file is distributed as is, without any warranty
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** of any kind.
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**
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** (c)Copyright Atollic AB.
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** You may use this file as-is or modify it according to the needs of your
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** project. This file may only be built (assembled or compiled and linked)
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** using the Atollic TrueSTUDIO(R) product. The use of this file together
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** with other tools than Atollic TrueSTUDIO(R) is not permitted.
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**
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*****************************************************************************
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*/
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/* Entry Point */
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ENTRY(Reset_Handler)
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/* Highest address of the user mode stack */
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_estack = 0x20010000; /* end of RAM */
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/* Generate a link error if heap and stack don't fit into RAM */
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_Min_Heap_Size = 0x200; /* required amount of heap */
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_Min_Stack_Size = 0x400; /* required amount of stack */
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/* Specify the memory areas */
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MEMORY
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{
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 64K
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FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 256K
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}
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/* Define output sections */
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SECTIONS
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{
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/* The startup code goes first into FLASH */
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.isr_vector :
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{
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. = ALIGN(4);
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KEEP(*(.isr_vector)) /* Startup code */
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. = ALIGN(4);
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} >FLASH
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/* The program code and other data goes into FLASH */
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.text :
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{
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. = ALIGN(4);
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*(.text) /* .text sections (code) */
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*(.text*) /* .text* sections (code) */
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*(.glue_7) /* glue arm to thumb code */
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*(.glue_7t) /* glue thumb to arm code */
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*(.eh_frame)
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KEEP (*(.init))
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KEEP (*(.fini))
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. = ALIGN(4);
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_etext = .; /* define a global symbols at end of code */
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} >FLASH
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/* Constant data goes into FLASH */
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.rodata :
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{
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. = ALIGN(4);
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*(.rodata) /* .rodata sections (constants, strings, etc.) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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. = ALIGN(4);
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} >FLASH
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.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
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.ARM : {
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__exidx_start = .;
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*(.ARM.exidx*)
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__exidx_end = .;
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} >FLASH
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.preinit_array :
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{
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PROVIDE_HIDDEN (__preinit_array_start = .);
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KEEP (*(.preinit_array*))
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PROVIDE_HIDDEN (__preinit_array_end = .);
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} >FLASH
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.init_array :
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{
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PROVIDE_HIDDEN (__init_array_start = .);
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array*))
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PROVIDE_HIDDEN (__init_array_end = .);
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} >FLASH
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.fini_array :
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{
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PROVIDE_HIDDEN (__fini_array_start = .);
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KEEP (*(SORT(.fini_array.*)))
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KEEP (*(.fini_array*))
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PROVIDE_HIDDEN (__fini_array_end = .);
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} >FLASH
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/* used by the startup to initialize data */
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_sidata = LOADADDR(.data);
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/* Initialized data sections goes into RAM, load LMA copy after code */
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.data :
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{
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. = ALIGN(4);
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_sdata = .; /* create a global symbol at data start */
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*(.data) /* .data sections */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end */
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} >RAM AT> FLASH
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/* Uninitialized data section */
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. = ALIGN(4);
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.bss :
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{
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/* This is used by the startup in order to initialize the .bss secion */
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_sbss = .; /* define a global symbol at bss start */
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__bss_start__ = _sbss;
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*(.bss)
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end */
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__bss_end__ = _ebss;
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} >RAM
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/* User_heap_stack section, used to check that there is enough RAM left */
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._user_heap_stack :
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{
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. = ALIGN(4);
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PROVIDE ( end = . );
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PROVIDE ( _end = . );
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. = . + _Min_Heap_Size;
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. = . + _Min_Stack_Size;
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. = ALIGN(4);
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} >RAM
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/* Remove information from the standard libraries */
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/DISCARD/ :
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{
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libc.a ( * )
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libm.a ( * )
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libgcc.a ( * )
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}
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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/* Entry Point */
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ENTRY(Reset_Handler)
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/* Highest address of the user mode stack */
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_estack = 0x2000C000; /* end of RAM */
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/* Generate a link error if heap and stack don't fit into RAM */
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_Min_Heap_Size = 0x4000; /* required amount of heap */
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_Min_Stack_Size = 0x800; /* required amount of stack */
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/* Specify the memory areas */
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MEMORY
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{
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RAM1 (xrw) : ORIGIN = 0x20000000, LENGTH = 48K
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RAM2 (xrw) : ORIGIN = 0x10000000, LENGTH = 16K
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FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 256K
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}
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/* Define output sections */
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SECTIONS
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{
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/* The startup code goes first into FLASH */
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.isr_vector :
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{
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. = ALIGN(4);
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KEEP(*(.isr_vector)) /* Startup code */
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. = ALIGN(4);
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} >FLASH
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/* The program code and other data goes into FLASH */
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.text :
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{
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. = ALIGN(4);
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*(.text) /* .text sections (code) */
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*(.text*) /* .text* sections (code) */
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*(.glue_7) /* glue arm to thumb code */
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*(.glue_7t) /* glue thumb to arm code */
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*(.eh_frame)
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KEEP (*(.init))
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KEEP (*(.fini))
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. = ALIGN(4);
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_etext = .; /* define a global symbols at end of code */
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} >FLASH
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/* Constant data goes into FLASH */
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.rodata :
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{
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. = ALIGN(4);
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*(.rodata) /* .rodata sections (constants, strings, etc.) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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. = ALIGN(4);
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} >FLASH
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.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
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.ARM : {
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__exidx_start = .;
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*(.ARM.exidx*)
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__exidx_end = .;
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} >FLASH
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.preinit_array :
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{
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PROVIDE_HIDDEN (__preinit_array_start = .);
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KEEP (*(.preinit_array*))
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PROVIDE_HIDDEN (__preinit_array_end = .);
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} >FLASH
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.init_array :
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{
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PROVIDE_HIDDEN (__init_array_start = .);
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array*))
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PROVIDE_HIDDEN (__init_array_end = .);
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} >FLASH
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.fini_array :
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{
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PROVIDE_HIDDEN (__fini_array_start = .);
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KEEP (*(SORT(.fini_array.*)))
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KEEP (*(.fini_array*))
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PROVIDE_HIDDEN (__fini_array_end = .);
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} >FLASH
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/* used by the startup to initialize data */
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_sidata = LOADADDR(.data);
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/* Initialized data sections goes into RAM, load LMA copy after code */
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.data :
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{
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. = ALIGN(4);
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_sdata = .; /* create a global symbol at data start */
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*(.data) /* .data sections */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end */
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} >RAM1 AT> FLASH
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_sibss2 = LOADADDR(.bss2);
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/* RAM2 section
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*
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* IMPORTANT NOTE!
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* If initialized variables will be placed in this section,
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* the startup code needs to be modified to copy the init-values.
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*/
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.bss2 :
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{
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. = ALIGN(4);
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_sbss2 = .; /* create a global symbol at ram2 start */
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*(.bss2)
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*(.bss2*)
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. = ALIGN(4);
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_ebss2 = .; /* create a global symbol at ram2 end */
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} >RAM2 AT> FLASH
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_sibss3 = LOADADDR(.bss3);
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.bss3 :
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{
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. = ALIGN(4);
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_sbss3 = .; /* create a global symbol at ram3 start */
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*(.bss3)
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*(.bss3*)
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. = ALIGN(4);
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_ebss3 = .; /* create a global symbol at ram3 end */
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} >RAM2 AT> FLASH
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/* Uninitialized data section */
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. = ALIGN(4);
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.bss :
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{
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/* This is used by the startup in order to initialize the .bss secion */
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_sbss = .; /* define a global symbol at bss start */
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__bss_start__ = _sbss;
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*(.bss)
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end */
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__bss_end__ = _ebss;
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} >RAM1
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/* User_heap_stack section, used to check that there is enough RAM left */
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._user_heap_stack :
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{
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. = ALIGN(4);
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PROVIDE ( end = . );
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PROVIDE ( _end = . );
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. = . + _Min_Heap_Size;
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. = . + _Min_Stack_Size;
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. = ALIGN(4);
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} >RAM1
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_Heap_Begin = _end;
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_Heap_Limit = _estack - _Min_Stack_Size;
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/* Remove information from the standard libraries */
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/DISCARD/ :
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{
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libc.a ( * )
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libm.a ( * )
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libgcc.a ( * )
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}
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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@ -2,6 +2,8 @@
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******************************************************************************
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* @file startup_stm32l432xx.s
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* @author MCD Application Team
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* @version V1.3.1
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* @date 21-April-2017
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* @brief STM32L432xx devices vector table for GCC toolchain.
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* This module performs:
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* - Set the initial SP
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@ -94,6 +96,21 @@ LoopCopyDataInit:
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adds r2, r0, r1
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cmp r2, r3
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bcc CopyDataInit
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/* BEGIN BSS2 init code */
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movs r1, #0
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b LoopCopyDataInit1
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CopyDataInit1:
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ldr r3, =_sibss2
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ldr r3, [r3, r1]
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str r3, [r0, r1]
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adds r1, r1, #4
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LoopCopyDataInit1:
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ldr r0, =_sbss2
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ldr r3, =_ebss2
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adds r2, r0, r1
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cmp r2, r3
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bcc CopyDataInit1
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/* END BSS2 init code */
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ldr r2, =_sbss
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b LoopFillZerobss
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/* Zero fill the bss segment. */
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