Question
Why can I not program more 470KB into external memory with STM32_Programmer_CLI?
I created a custom external loader to work with STM32H7A3ZG and NOR flash S29GL512S11 (64MB memory, 512 sectors with 128KB. Each sector is divided by pages with 512B size.
With STM32CubeProgrammer I can erase all chip, sector erase, read all memory and write a word in specific address, but I cannot flash files bigger than 470KB into the external memory. It means, after I try to write files bigger than 470KB, only the first part of the file was wrote correctly into the memory.
My Dev_Inf.h is:
#include "Dev_Inf.h"
/* This structure containes information used by ST-LINK Utility to program and erase the device */
#if defined (__ICCARM__)
__root struct StorageInfo const StorageInfo = {
#else
struct StorageInfo const StorageInfo = {
#endif
"S29GL512S11_BOARD", // Device Name + version number
NOR_FLASH, // Device Type
0x60000000, // Device Start Address
0x4000000, // Device Size in Bytes 64MBytes
0x00000200, // Programming Page Size 512 Bytes
0xFF, // Initial Content of Erased Memory
// Specify Size and Address of Sectors (view example below)
0x00000200, 0x00020000,
};My linker file is like:
/*
*****************************************************************************
** File : linker.ld
**
** 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
**
*****************************************************************************
*/
/* Entry Point */
ENTRY(Init)
/* Generate 2 segment for Loader code and device info */
PHDRS {Loader PT_LOAD ; SgInfo PT_LOAD ; }
/* Highest address of the user mode stack */
_estack = ORIGIN(RAM_D1) + LENGTH(RAM_D1); /* 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 */
MEMORY
{
RAM_D1 (xrw) : ORIGIN = 0x24000000, LENGTH = 512K
}
/* Define output sections */
SECTIONS
{
/* The startup code goes first into FLASH */
.isr_vector :
{
. = . + 0x1FC;
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >RAM_D1 :Loader
.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >RAM_D1
.ARM : {
__exidx_start = .;
*(.ARM.exidx*)
__exidx_end = .;
} >RAM_D1 :Loader
.preinit_array :
{
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array*))
PROVIDE_HIDDEN (__preinit_array_end = .);
} >RAM_D1 :Loader
.init_array :
{
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array*))
PROVIDE_HIDDEN (__init_array_end = .);
} >RAM_D1 :Loader
.fini_array :
{
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT(.fini_array.*)))
KEEP (*(.fini_array*))
PROVIDE_HIDDEN (__fini_array_end = .);
} >RAM_D1 :Loader
/* 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_D1 :Loader
/* 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_D1 :Loader
/* 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 */
} >RAM_D1 :Loader
.Dev_info :
{
KEEP(*Dev_Inf.o ( .rodata* ))
} :SgInfo
/* Constant data goes into FLASH */
.rodata :
{
. = ALIGN(4);
*(.rodata) /* .rodata sections (constants, strings, etc.) */
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
. = ALIGN(4);
} >RAM_D1 :Loader
/* 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_D1 :Loader
.ARM.attributes 0 : { *(.ARM.attributes) }
}And I follow the instructions from https://www.st.com/content/ccc/resource/technical/document/user_manual/e6/10/d8/80/d6/1d/4a/f2/CD00262073.pdf/files/CD00262073.pdf/jcr:content/translations/en.CD00262073.pdf
I tried to split the file in smaller ones, and flash it one by one and everything work good, but don't work if I try to flash one entire file in once time.
Anyone had this issue before?
Best regards,
Luis