Witam Forumowiczów, próbuję odpalić FreeRTOS'a z MPU na SAM4C32 (Cortex-M4). Mam problem z konfiguracją skryptu linkera. Chodzi o dodanie obszarów pamięci wymaganych przez FreeRTOSa. Freertos w swoich demach ma przykładowy projekt z wykorzystaniem MPU pod GCC jednak tamten skrypt zawiera błędy (zostało to zgłoszone: http://sourceforge.net/p/freertos/bugs/46/) Zastosowałem te poprawki, ale wciąż mam problem uruchomieniem. Póki co wygląda to tak: /* ---------------------------------------------------------------------------- */ /* Atmel Microcontroller Software Support */ /* SAM Software Package License */ /* ---------------------------------------------------------------------------- */ /* Copyright (c) 2014, Atmel Corporation */ /* */ /* All rights reserved. */ /* */ /* Redistribution and use in source and binary forms, with or without */ /* modification, are permitted provided that the following condition is met: */ /* */ /* - Redistributions of source code must retain the above copyright notice, */ /* this list of conditions and the disclaimer below. */ /* */ /* Atmel's name may not be used to endorse or promote products derived from */ /* this software without specific prior written permission. */ /* */ /* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ /* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ /* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */ /* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */ /* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */ /* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */ /* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* ---------------------------------------------------------------------------- */ /* Variables used by FreeRTOS-MPU. */ _Privileged_Functions_Region_Size = 65536; _Privileged_Data_Region_Size = 2048; __FLASH_segment_start__ = ORIGIN( rom ); __FLASH_segment_end__ = __FLASH_segment_start__ + LENGTH( rom ); __privileged_functions_start__ = ORIGIN( rom ); __privileged_functions_end__ = __privileged_functions_start__ + _Privileged_Functions_Region_Size; __SRAM_segment_start__ = ORIGIN( ram ); __SRAM_segment_end__ = __SRAM_segment_start__ + LENGTH( ram ); __privileged_data_start__ = ORIGIN( ram ); __privileged_data_end__ = ORIGIN( ram ) + _Privileged_Data_Region_Size; _vRamTop = ORIGIN( ram ) + LENGTH( ram ); /* Section Definitions */ SECTIONS { /* Privileged section at the start of the flash - vectors must be first whatever. */ privileged_functions : { *(privileged_functions) /* Non privileged code kept out of the first 64K of flash. */ ASSERT((. <= _Privileged_Functions_Region_Size), "FreeRTOS kernel privileged functions size exceeds defined region size"); . = MAX(_Privileged_Functions_Region_Size, .); } > rom .text : { . = ALIGN(4); _sfixed = .; KEEP(*(.vectors .vectors.*)) *(.text .text.* .gnu.linkonce.t.*) *(.glue_7t) *(.glue_7) *(.rodata .rodata* .gnu.linkonce.r.*) *(.ARM.extab* .gnu.linkonce.armextab.*) /* Support C constructors, and C destructors in both user code and the C library. This also provides support for C++ code. */ . = ALIGN(4); KEEP(*(.init)) . = ALIGN(4); __preinit_array_start = .; KEEP (*(.preinit_array)) __preinit_array_end = .; . = ALIGN(4); __init_array_start = .; KEEP (*(SORT(.init_array.*))) KEEP (*(.init_array)) __init_array_end = .; . = ALIGN(0x4); KEEP (*crtbegin.o(.ctors)) KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) KEEP (*(SORT(.ctors.*))) KEEP (*crtend.o(.ctors)) . = ALIGN(4); KEEP(*(.fini)) . = ALIGN(4); __fini_array_start = .; KEEP (*(.fini_array)) KEEP (*(SORT(.fini_array.*))) __fini_array_end = .; KEEP (*crtbegin.o(.dtors)) KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) KEEP (*(SORT(.dtors.*))) KEEP (*crtend.o(.dtors)) . = ALIGN(4); _efixed = .; /* End of text section */ } > rom /* .ARM.exidx is sorted, so has to go in its own output section. */ PROVIDE_HIDDEN (__exidx_start = .); .ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) } > rom PROVIDE_HIDDEN (__exidx_end = .); . = ALIGN(4); _etext = .; .relocate : AT (_etext) { . = ALIGN(4); _srelocate = .; *(.ramfunc .ramfunc.*); *(.data .data.*); . = ALIGN(4); _erelocate = .; } > ram /* zero initialized data */ privileged_data : { _bss = .; *(privileged_data) /* Non kernel data is kept out of the first 2048 bytes of SRAM. */ } > ram . = ORIGIN( ram ) + _Privileged_Data_Region_Size; /* .bss section which is used for uninitialized data */ .bss (NOLOAD) : { . = ALIGN(4); _sbss = . ; _szero = .; *(.bss .bss.*) *(COMMON) . = ALIGN(4); _ebss = . ; _ezero = .; } > ram /* stack section */ .stack (NOLOAD): { . = ALIGN(8); _sstack = .; . = . + STACK_SIZE; . = ALIGN(8); _estack = .; } > ram /* heap section */ .heap (NOLOAD): { . = ALIGN(8); _sheap = .; . = . + HEAP_SIZE; . = ALIGN(8); _eheap = .; } > ram . = ALIGN(4); _end = . ; /* Where we put the heap with cr_clib */ .cr_heap : { end = .; _pvHeapStart = .; } > ram /* Note: (ref: M0000066) Moving the stack down by 16 is to work around a GDB bug. This space can be reclaimed for Production Builds. */ _vStackTop = _vRamTop - 16; _ram_end_ = ORIGIN(ram) + LENGTH(ram) -1 ; } Niestety przykładowy program, który z oryginalnym skryptem działał, po dodaniu tych dodatkowych obszarów pamięci przestaje działać. Oryginalny skrypt dodałem w załączniku.
/* ---------------------------------------------------------------------------- */
/* Atmel Microcontroller Software Support */
/* SAM Software Package License */
/* ---------------------------------------------------------------------------- */
/* Copyright (c) 2014, Atmel Corporation */
/* */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following condition is met: */
/* */
/* - Redistributions of source code must retain the above copyright notice, */
/* this list of conditions and the disclaimer below. */
/* */
/* Atmel's name may not be used to endorse or promote products derived from */
/* this software without specific prior written permission. */
/* */
/* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL " AS IS " AND ANY EXPRESS OR */
/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */
/* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */
/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */
/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* ---------------------------------------------------------------------------- */
/* Section Definitions */
SECTIONS
{
.text :
{
. = ALIGN(4);
_sfixed = .;
KEEP(*(.vectors .vectors.*))
*(.text .text.* .gnu.linkonce.t.*)
*(.glue_7t) *(.glue_7)
*(.rodata .rodata* .gnu.linkonce.r.*)
*(.ARM.extab* .gnu.linkonce.armextab.*)
/* Support C constructors, and C destructors in both user code
and the C library. This also provides support for C++ code. */
. = ALIGN(4);
KEEP(*(.init))
. = ALIGN(4);
__preinit_array_start = .;
KEEP (*(.preinit_array))
__preinit_array_end = .;
. = ALIGN(4);
__init_array_start = .;
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
__init_array_end = .;
. = ALIGN(0x4);
KEEP (*crtbegin.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*crtend.o(.ctors))
. = ALIGN(4);
KEEP(*(.fini))
. = ALIGN(4);
__fini_array_start = .;
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
__fini_array_end = .;
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*crtend.o(.dtors))
. = ALIGN(4);
_efixed = .; /* End of text section */
} & gt; rom
/* .ARM.exidx is sorted, so has to go in its own output section. */
PROVIDE_HIDDEN (__exidx_start = .);
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} & gt; rom
PROVIDE_HIDDEN (__exidx_end = .);
. = ALIGN(4);
_etext = .;
.relocate : AT (_etext)
{
. = ALIGN(4);
_srelocate = .;
*(.ramfunc .ramfunc.*);
*(.data .data.*);
. = ALIGN(4);
_erelocate = .;
} & gt; ram
/* .bss section which is used for uninitialized data */
.bss (NOLOAD) :
{
. = ALIGN(4);
_sbss = . ;
_szero = .;
*(.bss .bss.*)
*(COMMON)
. = ALIGN(4);
_ebss = . ;
_ezero = .;
} & gt; ram
/* stack section */
.stack (NOLOAD):
{
. = ALIGN(8);
_sstack = .;
. = . + STACK_SIZE;
. = ALIGN(8);
_estack = .;
} & gt; ram
/* heap section */
.heap (NOLOAD):
{
. = ALIGN(8);
_sheap = .;
. = . + HEAP_SIZE;
. = ALIGN(8);
_eheap = .;
} & gt; ram
. = ALIGN(4);
_end = . ;
_ram_end_ = ORIGIN(ram) + LENGTH(ram) -1 ;
}