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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32

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Posted by joanquark on 2016-02-06 22:19

Hi, i’m trying to develop an IAP solution, divinding code in OSBoot, APPisr, APPmain and rest of code, during flash update only OSBoot part is not updated, and contains SPI and flash writting routines.
i use sections to assing code to different part of code in that way: int attribute((section(“.OSboot”))) main(void) ;
i’ve modified the LinkerScript.ld file in a way to force the link to put OSBoot, APPSRV and APPMain in fix part of code area, for an STM32F072 such:

MEMORY
{
OSBoot (rx)  : ORIGIN = 0x80000000, LENGTH = 4096
APPmain (rx) : ORIGIN = 0x80001000, LENGTH = 4096
APPisr (rx) : ORIGIN = 0x80002000, LENGTH = 4096
FLASH (rx)  : ORIGIN = 0x80003000, LENGTH = 118784
RAM (xrw)  : ORIGIN = 0x20000000, LENGTH = 16384
}

but after link, the map file shows addresses have not been properly assigned.

.OSboot 0x8000e7b0 0x88 MSP/targetset/STRATUS3T-F072RB/sal/modules/MODspi.o

what i’m missing?

Regards

Reads: 4871
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Posted by joanquark on 2016-02-06 23:01

I’ve found the solution...
MEMORY
{
BOOTOS (rx)  : ORIGIN = 0x80000000, LENGTH = 4096
MAINAPP (rx) : ORIGIN = 0x80001000, LENGTH = 4096
ISRAPP (rx) : ORIGIN = 0x80002000, LENGTH = 4096
FLASH (rx)  : ORIGIN = 0x80003000, LENGTH = 118784
RAM (xrw)  : ORIGIN = 0x20000000, LENGTH = 16384
}

and then

/* The startup code goes first into OSBoot */
.isr_vector :
{
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >BOOTOS
.OSboot :
{
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >BOOTOS

.APPmain :
{
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >MAINAPP

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