Posted by qdaemon_fr on 2017-01-11 14:25

Hi

Conf
W7 SP1
AC6 1.10.0.201607251855
STM32L152ZET6

I need some arrays in bank2 of the flash memory. Based on the map file, the data at the correct
place and when inspecting the hex file, it ok too.
But when flashing with AC6, the data is not correctly initialized.
When flashing with STLink Utility, it is ok.

Here’s the declaration of the arrays :

attribute((section(“.arrayFlash”))) uint32_t flashData200 = { 6, 8 , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
attribute((section(“.arrayFlash”))) uint32_t flashStrings100 = {4, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

Here’s the linker file:

/* Entry Point */
ENTRY(Reset_Handler)

/* Highest address of the user mode stack */
_estack = 0x20014000; /* 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 */

/* Specify the memory areas */

/*
FLASH_BANK1 (rx) : ORIGIN = 0x8007000, LENGTH = 228K
FLASH_BANK2 (rx) : ORIGIN = 0x8040000, LENGTH = 256K

• /

/* FLASH (rx)  : ORIGIN = 0x8007000, LENGTH = 228K
FLASH_BANK2 (rx) : ORIGIN = 0x8040000, LENGTH = 256K */

MEMORY
{
FLASH (rx)  : ORIGIN = 0x8007000, LENGTH = 228K
FLASH_BANK2 (rx) : ORIGIN = 0x8040000, LENGTH = 256K
EEPROM_BANK1 (rx) : ORIGIN = 0x8080000, LENGTH = 8K
EEPROM_BANK2 (rx) : ORIGIN = 0x8082000, LENGTH = 8K
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 80K
}

/* Define output sections */
SECTIONS
{
/* The startup code goes first into FLASH */
.isr_vector :
{
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >RAM AT> 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

/* 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(8);
PROVIDE ( end = . );
PROVIDE ( _end = . );
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(8);
} >RAM

.arrayFlash :
{
. = ALIGN(64*4);
*(.arrayFlash)
. = ALIGN(64*4);
} >FLASH_BANK2

/* Remove information from the standard libraries */
/DISCARD/ :
{
libc.a ( * )
libm.a ( * )
libgcc.a ( * )
}

.ARM.attributes 0 : { *(.ARM.attributes) }
}

What should I do?

Thanks
Julien