diff options
Diffstat (limited to 'controller/fw/stm32f407.ld')
| -rw-r--r-- | controller/fw/stm32f407.ld | 172 |
1 files changed, 143 insertions, 29 deletions
diff --git a/controller/fw/stm32f407.ld b/controller/fw/stm32f407.ld index 764ed6b..f998b4a 100644 --- a/controller/fw/stm32f407.ld +++ b/controller/fw/stm32f407.ld @@ -1,34 +1,148 @@ -/* - * This file is part of the libopencm3 project. - * - * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> - * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com> - * - * This library is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This library 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 Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this library. If not, see <http://www.gnu.org/licenses/>. - */ - -/* Linker script for ST STM32F4DISCOVERY (STM32F407VG, 1024K flash, 128K RAM). */ - -/* Define memory regions. */ MEMORY { - rom (rx) : ORIGIN = 0x08000000, LENGTH = 1024K - ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K - ccm (rwx) : ORIGIN = 0x10000000, LENGTH = 64K - bkp (rwx) : ORIGIN = 0x40024000, LENGTH = 4K + FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K + RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 128K + CCMRAM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K + BACKUP (rwx) : ORIGIN = 0x40024000, LENGTH = 4K +} + +/* Entry Point */ +ENTRY(Reset_Handler) + +/* Highest address of the user mode stack */ +_estack = 0x20020000; /* end of RAM */ +/* Generate a link error if heap and stack don't fit into RAM */ +_Min_Heap_Size = 0x200;; /* required amount of heap */ +_Min_Stack_Size = 0x400;; /* required amount of stack */ + +/* 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 */ + } >RAM AT> FLASH + + _siccmram = LOADADDR(.ccmram); + + /* CCM-RAM section + * + * IMPORTANT NOTE! + * If initialized variables will be placed in this section, + * the startup code needs to be modified to copy the init-values. + */ + .ccmram : + { + . = ALIGN(4); + _sccmram = .; /* create a global symbol at ccmram start */ + *(.ccmram) + *(.ccmram*) + + . = ALIGN(4); + _eccmram = .; /* create a global symbol at ccmram end */ + } >CCMRAM AT> FLASH + + + /* 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 + + .ARM.attributes 0 : { *(.ARM.attributes) } } -/* Include the common ld script. */ -INCLUDE cortex-m-generic.ld |