diff --git a/Makefile b/Makefile index 4e72d56..96cd0e9 100644 --- a/Makefile +++ b/Makefile @@ -43,7 +43,7 @@ DEFS=-DUSE_STDPERIPH_DRIVER -DSTM32F4XX -DSTM32F407VG CFLAGS=-c $(MCFLAGS) $(DEFS) $(INCLUDES) CXXFLAGS=-c $(MCFLAGS) $(DEFS) $(INCLUDES) # LINKER FLAGS -LDSCRIPT=stm32_flash.ld +LDSCRIPT=stm32f4xx_link.ld LDFLAGS =-T $(LDSCRIPT) $(MCFLAGS) --specs=nosys.specs $(INCLUDES_LIBS) $(LINK_LIBS) ### @@ -53,9 +53,9 @@ LDFLAGS =-T $(LDSCRIPT) $(MCFLAGS) --specs=nosys.specs $(INCLUDES_LIBS) $(LINK_L all: release-memopt release-memopt: DEFS+=-DCUSTOM_NEW -DNO_EXCEPTIONS -release-memopt: CFLAGS+=-Os -ffunction-sections -fdata-sections -fno-builtin # -flto -release-memopt: CXXFLAGS+=-Os -fno-exceptions -ffunction-sections -fdata-sections -fno-builtin -fno-rtti # -flto -release-memopt: LDFLAGS+=-Os --specs=nano.specs # -flto +release-memopt: CFLAGS+=-Os -ffunction-sections -fdata-sections -fno-builtin +release-memopt: CXXFLAGS+=-Os -fno-exceptions -ffunction-sections -fdata-sections -fno-builtin -fno-rtti +release-memopt: LDFLAGS+=-Os --specs=nano.specs release-memopt: release debug: CFLAGS+=-g diff --git a/stm32_flash.ld b/stm32_flash.ld deleted file mode 100644 index 1a0b4b8..0000000 --- a/stm32_flash.ld +++ /dev/null @@ -1,170 +0,0 @@ -/* -***************************************************************************** -** -** File : stm32_flash.ld -** -** Abstract : Linker script for STM32F407VG Device with -** 1024KByte FLASH, 192KByte 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 -** -** Environment : Atollic TrueSTUDIO(R) -** -** Distribution: The file is distributed “as is,” without any warranty -** of any kind. -** -** (c)Copyright Atollic AB. -** You may use this file as-is or modify it according to the needs of your -** project. Distribution of this file (unmodified or modified) is not -** permitted. Atollic AB permit registered Atollic TrueSTUDIO(R) users the -** rights to distribute the assembled, compiled & linked contents of this -** file as part of an application binary file, provided that it is built -** using the Atollic TrueSTUDIO(R) toolchain. -** -***************************************************************************** -*/ - -/* Entry Point */ -ENTRY(Reset_Handler) - -/* Highest address of the user mode stack */ -_estack = 0x20020000; /* end of 128K RAM on AHB bus*/ - -/* Generate a link error if heap and stack don't fit into RAM */ -_Min_Heap_Size = 0; /* required amount of heap */ -_Min_Stack_Size = 0x400; /* required amount of stack */ - -/* Specify the memory areas */ -MEMORY -{ - FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1024K - RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 192K - MEMORY_B1 (rx) : ORIGIN = 0x60000000, LENGTH = 0K -} - -/* 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) */ - *(.rodata) /* .rodata sections (constants, strings, etc.) */ - *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ - *(.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 - - - .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 (*(.fini_array*)) - KEEP (*(SORT(.fini_array.*))) - PROVIDE_HIDDEN (__fini_array_end = .); - } >FLASH - - /* used by the startup to initialize data */ - _sidata = .; - - /* Initialized data sections goes into RAM, load LMA copy after code */ - .data : AT ( _sidata ) - { - . = 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 */ - } >RAM - - /* Uninitialized data section */ - . = ALIGN(4); - .bss : - { - /* This is used by the startup in order to initialize the .bss secion */ - _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 - - /* User_heap_stack section, used to check that there is enough RAM left */ - ._user_heap_stack : - { - . = ALIGN(4); - PROVIDE ( end = . ); - PROVIDE ( _end = . ); - . = . + _Min_Heap_Size; - . = . + _Min_Stack_Size; - . = ALIGN(4); - } >RAM - - /* MEMORY_bank1 section, code must be located here explicitly */ - /* Example: extern int foo(void) __attribute__ ((section (".mb1text"))); */ - .memory_b1_text : - { - *(.mb1text) /* .mb1text sections (code) */ - *(.mb1text*) /* .mb1text* sections (code) */ - *(.mb1rodata) /* read-only data (constants) */ - *(.mb1rodata*) - } >MEMORY_B1 - - /* Remove information from the standard libraries */ - /DISCARD/ : - { - libc.a ( * ) - libm.a ( * ) - libgcc.a ( * ) - } - - .ARM.attributes 0 : { *(.ARM.attributes) } -} diff --git a/stm32f4xx_link.ld b/stm32f4xx_link.ld new file mode 100644 index 0000000..24ee380 --- /dev/null +++ b/stm32f4xx_link.ld @@ -0,0 +1,138 @@ +/* + * Copyright (C) 2016 by Andy Uribe CA6JAU + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/* Required amount of heap and stack */ +_min_heap_size = 0x1000; +_min_stack_size = 0x0800; + +/* The entry point in the interrupt vector table */ +ENTRY(Reset_Handler) + +/* Memory areas */ +MEMORY +{ + ROM (rx) : ORIGIN = 0x08000000, LENGTH = 1024K /* FLASH */ + CCMRAM (xrw) : ORIGIN = 0x10000000, LENGTH = 64K /* Core Coupled Memory (CPU only access) */ + RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K /* Main RAM (bus matrix)*/ +} + +/* Stack start address (end of 128K RAM) */ +_estack = ORIGIN(RAM) + LENGTH(RAM); + +SECTIONS +{ + .text : + { + /* The interrupt vector table */ + . = ALIGN(4); + KEEP(*(.isr_vector .isr_vector.*)) + + /* The program code */ + . = ALIGN(4); + *(.text .text*) + *(.rodata .rodata*) + + /* ARM-Thumb code */ + *(.glue_7) *(.glue_7t) + + . = ALIGN(4); + KEEP(*(.init)) + KEEP(*(.fini)) + + /* EABI C++ global constructors support */ + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + + /* EABI C++ global constructors support */ + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + + /* EABI C++ global constructors support */ + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + + } > ROM + + /* ARM sections containing exception unwinding information */ + .ARM.extab : { + __extab_start = .; + *(.ARM.extab* .gnu.linkonce.armextab.*) + __extab_end = .; + } > ROM + + /* ARM index entries for section unwinding */ + .ARM.exidx : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } > ROM + + /* Start address for the initialization values of the .data section */ + _sidata = .; + + /* The .data section (initialized data) */ + .data : AT ( _sidata ) + { + . = ALIGN(4); + _sdata = . ; /* Start address for the .data section */ + *(.data .data*) + + . = ALIGN(4); + _edata = . ; /* End address for the .data section */ + } > RAM + + /* The .bss section (uninitialized data) */ + .bss : + { + . = ALIGN(4); + _sbss = .; /* Start address for the .bss section */ + __bss_start__ = _sbss; + *(.bss) + *(.bss*) + *(COMMON) + + . = ALIGN(4); + _ebss = . ; /* End address for the .bss section */ + __bss_end__ = _ebss; + } > RAM + + /* Space for heap and stack */ + .heap_stack : + { + end = . ; /* 'end' symbol defines heap location */ + _end = end ; + . = . + _min_heap_size; /* Additional space for heap and stack */ + . = . + _min_stack_size; + } > RAM + + /* Remove information from the standard libraries */ + /DISCARD/ : + { + libc.a ( * ) + libm.a ( * ) + libgcc.a ( * ) + } +}