446 lines
12 KiB
Plaintext
446 lines
12 KiB
Plaintext
/*
|
|
* Default linker script for Cortex-M (it includes specifics for STM32F[34]xx).
|
|
*
|
|
* To make use of the multi-region initialisations, define
|
|
* OS_INCLUDE_STARTUP_INIT_MULTIPLE_RAM_SECTIONS for the _startup.c file.
|
|
*/
|
|
|
|
/*
|
|
* The '__stack' definition is required by crt0, do not remove it.
|
|
*/
|
|
__stack = ORIGIN(RAM) + LENGTH(RAM);
|
|
|
|
_estack = __stack; /* STM specific definition */
|
|
|
|
/*
|
|
* Default stack sizes.
|
|
* These are used by the startup in order to allocate stacks
|
|
* for the different modes.
|
|
*/
|
|
|
|
__Main_Stack_Size = 1024 ;
|
|
|
|
PROVIDE ( _Main_Stack_Size = __Main_Stack_Size ) ;
|
|
|
|
__Main_Stack_Limit = __stack - __Main_Stack_Size ;
|
|
|
|
/* "PROVIDE" allows to easily override these values from an
|
|
* object file or the command line. */
|
|
PROVIDE ( _Main_Stack_Limit = __Main_Stack_Limit ) ;
|
|
|
|
/*
|
|
* There will be a link error if there is not this amount of
|
|
* RAM free at the end.
|
|
*/
|
|
_Minimum_Stack_Size = 256 ;
|
|
|
|
/*
|
|
* Default heap definitions.
|
|
* The heap start immediately after the last statically allocated
|
|
* .sbss/.noinit section, and extends up to the main stack limit.
|
|
*/
|
|
PROVIDE ( _Heap_Begin = _end_noinit ) ;
|
|
PROVIDE ( _Heap_Limit = __stack - __Main_Stack_Size ) ;
|
|
|
|
/*
|
|
* The entry point is informative, for debuggers and simulators,
|
|
* since the Cortex-M vector points to it anyway.
|
|
*/
|
|
ENTRY(_start)
|
|
|
|
|
|
/* Sections Definitions */
|
|
|
|
SECTIONS
|
|
{
|
|
/*
|
|
* For Cortex-M devices, the beginning of the startup code is stored in
|
|
* the .isr_vector section, which goes to FLASH.
|
|
*/
|
|
.isr_vector : ALIGN(4)
|
|
{
|
|
FILL(0xFF)
|
|
|
|
__vectors_start = ABSOLUTE(.) ;
|
|
__vectors_start__ = ABSOLUTE(.) ; /* STM specific definition */
|
|
KEEP(*(.isr_vector)) /* Interrupt vectors */
|
|
|
|
KEEP(*(.cfmconfig)) /* Freescale configuration words */
|
|
|
|
/*
|
|
* This section is here for convenience, to store the
|
|
* startup code at the beginning of the flash area, hoping that
|
|
* this will increase the readability of the listing.
|
|
*/
|
|
*(.after_vectors .after_vectors.*) /* Startup code and ISR */
|
|
|
|
} >FLASH
|
|
|
|
.inits : ALIGN(4)
|
|
{
|
|
/*
|
|
* Memory regions initialisation arrays.
|
|
*
|
|
* Thee are two kinds of arrays for each RAM region, one for
|
|
* data and one for bss. Each is iterrated at startup and the
|
|
* region initialisation is performed.
|
|
*
|
|
* The data array includes:
|
|
* - from (LOADADDR())
|
|
* - region_begin (ADDR())
|
|
* - region_end (ADDR()+SIZEOF())
|
|
*
|
|
* The bss array includes:
|
|
* - region_begin (ADDR())
|
|
* - region_end (ADDR()+SIZEOF())
|
|
*
|
|
* WARNING: It is mandatory that the regions are word aligned,
|
|
* since the initialisation code works only on words.
|
|
*/
|
|
|
|
__data_regions_array_start = .;
|
|
|
|
LONG(LOADADDR(.data));
|
|
LONG(ADDR(.data));
|
|
LONG(ADDR(.data)+SIZEOF(.data));
|
|
|
|
LONG(LOADADDR(.data_CCMRAM));
|
|
LONG(ADDR(.data_CCMRAM));
|
|
LONG(ADDR(.data_CCMRAM)+SIZEOF(.data_CCMRAM));
|
|
|
|
__data_regions_array_end = .;
|
|
|
|
__bss_regions_array_start = .;
|
|
|
|
LONG(ADDR(.bss));
|
|
LONG(ADDR(.bss)+SIZEOF(.bss));
|
|
|
|
LONG(ADDR(.bss_CCMRAM));
|
|
LONG(ADDR(.bss_CCMRAM)+SIZEOF(.bss_CCMRAM));
|
|
|
|
__bss_regions_array_end = .;
|
|
|
|
/* End of memory regions initialisation arrays. */
|
|
|
|
/*
|
|
* These are the old initialisation sections, intended to contain
|
|
* naked code, with the prologue/epilogue added by crti.o/crtn.o
|
|
* when linking with startup files. The standalone startup code
|
|
* currently does not run these, better use the init arrays below.
|
|
*/
|
|
KEEP(*(.init))
|
|
KEEP(*(.fini))
|
|
|
|
. = ALIGN(4);
|
|
|
|
/*
|
|
* The preinit code, i.e. an array of pointers to initialisation
|
|
* functions to be performed before constructors.
|
|
*/
|
|
PROVIDE_HIDDEN (__preinit_array_start = .);
|
|
|
|
/*
|
|
* Used to run the SystemInit() before anything else.
|
|
*/
|
|
KEEP(*(.preinit_array_sysinit .preinit_array_sysinit.*))
|
|
|
|
/*
|
|
* Used for other platform inits.
|
|
*/
|
|
KEEP(*(.preinit_array_platform .preinit_array_platform.*))
|
|
|
|
/*
|
|
* The application inits. If you need to enforce some order in
|
|
* execution, create new sections, as before.
|
|
*/
|
|
KEEP(*(.preinit_array .preinit_array.*))
|
|
|
|
PROVIDE_HIDDEN (__preinit_array_end = .);
|
|
|
|
. = ALIGN(4);
|
|
|
|
/*
|
|
* The init code, i.e. an array of pointers to static constructors.
|
|
*/
|
|
PROVIDE_HIDDEN (__init_array_start = .);
|
|
KEEP(*(SORT(.init_array.*)))
|
|
KEEP(*(.init_array))
|
|
PROVIDE_HIDDEN (__init_array_end = .);
|
|
|
|
. = ALIGN(4);
|
|
|
|
/*
|
|
* The fini code, i.e. an array of pointers to static destructors.
|
|
*/
|
|
PROVIDE_HIDDEN (__fini_array_start = .);
|
|
KEEP(*(SORT(.fini_array.*)))
|
|
KEEP(*(.fini_array))
|
|
PROVIDE_HIDDEN (__fini_array_end = .);
|
|
|
|
} >FLASH
|
|
|
|
/*
|
|
* For some STRx devices, the beginning of the startup code
|
|
* is stored in the .flashtext section, which goes to FLASH.
|
|
*/
|
|
.flashtext : ALIGN(4)
|
|
{
|
|
*(.flashtext .flashtext.*) /* Startup code */
|
|
} >FLASH
|
|
|
|
|
|
/*
|
|
* The program code is stored in the .text section,
|
|
* which goes to FLASH.
|
|
*/
|
|
.text : ALIGN(4)
|
|
{
|
|
*(.text .text.*) /* all remaining code */
|
|
|
|
/* read-only data (constants) */
|
|
*(.rodata .rodata.* .constdata .constdata.*)
|
|
|
|
*(vtable) /* C++ virtual tables */
|
|
|
|
KEEP(*(.eh_frame*))
|
|
|
|
/*
|
|
* Stub sections generated by the linker, to glue together
|
|
* ARM and Thumb code. .glue_7 is used for ARM code calling
|
|
* Thumb code, and .glue_7t is used for Thumb code calling
|
|
* ARM code. Apparently always generated by the linker, for some
|
|
* architectures, so better leave them here.
|
|
*/
|
|
*(.glue_7)
|
|
*(.glue_7t)
|
|
|
|
} >FLASH
|
|
|
|
/* ARM magic sections */
|
|
.ARM.extab : ALIGN(4)
|
|
{
|
|
*(.ARM.extab* .gnu.linkonce.armextab.*)
|
|
} > FLASH
|
|
|
|
. = ALIGN(4);
|
|
__exidx_start = .;
|
|
.ARM.exidx : ALIGN(4)
|
|
{
|
|
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
|
|
} > FLASH
|
|
__exidx_end = .;
|
|
|
|
. = ALIGN(4);
|
|
_etext = .;
|
|
__etext = .;
|
|
|
|
/* MEMORY_ARRAY */
|
|
/*
|
|
.ROarraySection :
|
|
{
|
|
*(.ROarraySection .ROarraySection.*)
|
|
} >MEMORY_ARRAY
|
|
*/
|
|
|
|
/*
|
|
* The secondary initialised data section.
|
|
*/
|
|
.data_CCMRAM : ALIGN(4)
|
|
{
|
|
FILL(0xFF)
|
|
*(.data.CCMRAM .data.CCMRAM.*)
|
|
. = ALIGN(4) ;
|
|
} > CCMRAM AT>FLASH
|
|
|
|
/*
|
|
* This address is used by the startup code to
|
|
* initialise the .data section.
|
|
*/
|
|
_sidata = LOADADDR(.data);
|
|
|
|
/*
|
|
* The initialised data section.
|
|
*
|
|
* The program executes knowing that the data is in the RAM
|
|
* but the loader puts the initial values in the FLASH (inidata).
|
|
* It is one task of the startup to copy the initial values from
|
|
* FLASH to RAM.
|
|
*/
|
|
.data : ALIGN(4)
|
|
{
|
|
FILL(0xFF)
|
|
/* This is used by the startup code to initialise the .data section */
|
|
_sdata = . ; /* STM specific definition */
|
|
__data_start__ = . ;
|
|
*(.data_begin .data_begin.*)
|
|
|
|
*(.data .data.*)
|
|
|
|
*(.data_end .data_end.*)
|
|
. = ALIGN(4);
|
|
|
|
/* This is used by the startup code to initialise the .data section */
|
|
_edata = . ; /* STM specific definition */
|
|
__data_end__ = . ;
|
|
|
|
} >RAM AT>FLASH
|
|
|
|
/*
|
|
* The uninitialised data sections. NOLOAD is used to avoid
|
|
* the "section `.bss' type changed to PROGBITS" warning
|
|
*/
|
|
|
|
/* The secondary uninitialised data section. */
|
|
.bss_CCMRAM (NOLOAD) : ALIGN(4)
|
|
{
|
|
*(.bss.CCMRAM .bss.CCMRAM.*)
|
|
} > CCMRAM
|
|
|
|
/* The primary uninitialised data section. */
|
|
.bss (NOLOAD) : ALIGN(4)
|
|
{
|
|
__bss_start__ = .; /* standard newlib definition */
|
|
_sbss = .; /* STM specific definition */
|
|
*(.bss_begin .bss_begin.*)
|
|
|
|
*(.bss .bss.*)
|
|
*(COMMON)
|
|
|
|
*(.bss_end .bss_end.*)
|
|
. = ALIGN(4);
|
|
__bss_end__ = .; /* standard newlib definition */
|
|
_ebss = . ; /* STM specific definition */
|
|
} >RAM
|
|
|
|
.noinit_CCMRAM (NOLOAD) : ALIGN(4)
|
|
{
|
|
*(.noinit.CCMRAM .noinit.CCMRAM.*)
|
|
} > CCMRAM
|
|
|
|
.noinit (NOLOAD) : ALIGN(4)
|
|
{
|
|
_noinit = .;
|
|
|
|
*(.noinit .noinit.*)
|
|
|
|
. = ALIGN(4) ;
|
|
_end_noinit = .;
|
|
} > RAM
|
|
|
|
/* Mandatory to be word aligned, _sbrk assumes this */
|
|
PROVIDE ( end = _end_noinit ); /* was _ebss */
|
|
PROVIDE ( _end = _end_noinit );
|
|
PROVIDE ( __end = _end_noinit );
|
|
PROVIDE ( __end__ = _end_noinit );
|
|
|
|
/*
|
|
* Used for validation only, do not allocate anything here!
|
|
*
|
|
* This is just to check that there is enough RAM left for the Main
|
|
* stack. It should generate an error if it's full.
|
|
*/
|
|
._check_stack : ALIGN(4)
|
|
{
|
|
. = . + _Minimum_Stack_Size ;
|
|
} >RAM
|
|
|
|
/*
|
|
* The FLASH Bank1.
|
|
* The C or assembly source must explicitly place the code
|
|
* or data there using the "section" attribute.
|
|
*/
|
|
.b1text : ALIGN(4)
|
|
{
|
|
*(.b1text) /* remaining code */
|
|
*(.b1rodata) /* read-only data (constants) */
|
|
*(.b1rodata.*)
|
|
} >FLASHB1
|
|
|
|
/*
|
|
* The EXTMEM.
|
|
* The C or assembly source must explicitly place the code or data there
|
|
* using the "section" attribute.
|
|
*/
|
|
|
|
/* EXTMEM Bank0 */
|
|
.eb0text : ALIGN(4)
|
|
{
|
|
*(.eb0text) /* remaining code */
|
|
*(.eb0rodata) /* read-only data (constants) */
|
|
*(.eb0rodata.*)
|
|
} >EXTMEMB0
|
|
|
|
/* EXTMEM Bank1 */
|
|
.eb1text : ALIGN(4)
|
|
{
|
|
*(.eb1text) /* remaining code */
|
|
*(.eb1rodata) /* read-only data (constants) */
|
|
*(.eb1rodata.*)
|
|
} >EXTMEMB1
|
|
|
|
/* EXTMEM Bank2 */
|
|
.eb2text : ALIGN(4)
|
|
{
|
|
*(.eb2text) /* remaining code */
|
|
*(.eb2rodata) /* read-only data (constants) */
|
|
*(.eb2rodata.*)
|
|
} >EXTMEMB2
|
|
|
|
/* EXTMEM Bank0 */
|
|
.eb3text : ALIGN(4)
|
|
{
|
|
*(.eb3text) /* remaining code */
|
|
*(.eb3rodata) /* read-only data (constants) */
|
|
*(.eb3rodata.*)
|
|
} >EXTMEMB3
|
|
|
|
|
|
/* After that there are only debugging sections. */
|
|
|
|
/* This can remove the debugging information from the standard libraries */
|
|
/*
|
|
DISCARD :
|
|
{
|
|
libc.a ( * )
|
|
libm.a ( * )
|
|
libgcc.a ( * )
|
|
}
|
|
*/
|
|
|
|
/* Stabs debugging sections. */
|
|
.stab 0 : { *(.stab) }
|
|
.stabstr 0 : { *(.stabstr) }
|
|
.stab.excl 0 : { *(.stab.excl) }
|
|
.stab.exclstr 0 : { *(.stab.exclstr) }
|
|
.stab.index 0 : { *(.stab.index) }
|
|
.stab.indexstr 0 : { *(.stab.indexstr) }
|
|
.comment 0 : { *(.comment) }
|
|
/*
|
|
* DWARF debug sections.
|
|
* Symbols in the DWARF debugging sections are relative to the beginning
|
|
* of the section so we begin them at 0.
|
|
*/
|
|
/* DWARF 1 */
|
|
.debug 0 : { *(.debug) }
|
|
.line 0 : { *(.line) }
|
|
/* GNU DWARF 1 extensions */
|
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
|
.debug_sfnames 0 : { *(.debug_sfnames) }
|
|
/* DWARF 1.1 and DWARF 2 */
|
|
.debug_aranges 0 : { *(.debug_aranges) }
|
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
|
/* DWARF 2 */
|
|
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
|
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
|
.debug_line 0 : { *(.debug_line) }
|
|
.debug_frame 0 : { *(.debug_frame) }
|
|
.debug_str 0 : { *(.debug_str) }
|
|
.debug_loc 0 : { *(.debug_loc) }
|
|
.debug_macinfo 0 : { *(.debug_macinfo) }
|
|
/* SGI/MIPS DWARF 2 extensions */
|
|
.debug_weaknames 0 : { *(.debug_weaknames) }
|
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
|
.debug_typenames 0 : { *(.debug_typenames) }
|
|
.debug_varnames 0 : { *(.debug_varnames) }
|
|
}
|