Compilation errors on Keil with OpenAmp project generated with CubeMX

[hllelek33]

Hi,

I am new about dual core mcu. I have stm32h745 mcu. 

I am working about inter core comminication, Firstly setting some setting on CubeMx.

When I create project codes, CubeMx creat 2 openamp library for each mcu(m4/m7).

After that I am trying build, and getting error like this.

 Error: L6200E: Symbol OPENAMP_init_ept multiply defined (by openamp_1.o and openamp.o). 

16 times geting similar error like this. 

Why CubeMx create wrong library. 

CubeIde working properly. (create only 1 library set)

[SofLit]

Hello,

I tried to start a project with OpenAmp on stm32h745  and didn't face any issue.

Which IDE are you using?

I attached a project created with STM32CubeIDE.

PS: you can inspire from the examples provided in STM32CubeH7 from this link: https://github.com/STMicroelectronics/STM32CubeH7/tree/master/Projects/STM32H747I-EVAL/Applications/OpenAMP

[hllelek33]

Thanks for replys.

My IDE Keil uVision V5.26.2.0

[SofLit]

Hello,

Thank you for the feedback. Is that possible to generate the project with CubeIDE and tell what it happens?

PS: I have errors with KEIL (but are not the same as yours) and IAR  .. (already reported the issue internally on ticket 172397.

What is the CubeMx version you're using?

[hllelek33]

Hello,

CubeMX version 6.9.0. When Update Cube Mx to 6.10.0, the error disappered. Now I have new errors. :) 

dual__CM4\dual__CM4.axf: Error: L6218E: Undefined symbol Image$$__OpenAMP_SHMEM__$$Base (referred from openamp.o).
dual__CM4\dual__CM4.axf: Error: L6218E: Undefined symbol Image$$__OpenAMP_SHMEM__$$ZI$$Length (referred from openamp.o).

I think it is about linker file. I can not configure linker file and this error occur. 

Is there  an any document for OpenAmp Linker configuration?

Or any advice about this error?

[SofLit]

Hello,

This is the exact issue that I had.

As I said I've already reported internally to fix the issue in the ticket 172397. The dev team will handle this.

Thank you.

[hllelek33]

Hi, 

Thank you. I am waiting for solution. Is there an any notification about solution for me?

[SofLit]

Don't worry, if there will be any news I will let you know ;)

[SofLit]

Hello,

In the linker files (.sct) add this line 

__OpenAMP_SHMEM__ 0x38000400  EMPTY 0x0000B000 {} ; Shared Memory area used by OpenAMP   

Read the comment in \OPENAMP\openamp_conf.h at line 126:

#elif defined(__CC_ARM) || defined (__clang__)
/*
 * For MDK-ARM, the scatter file .sct should contain the following line:
 * LR_IROM1 ....  {
 *  ...
 *   __OpenAMP_SHMEM__ 0x38000400  EMPTY 0x0000B000 {} ; Shared Memory area used by OpenAMP
 *  }
 *
 */
extern unsigned int Image$$__OpenAMP_SHMEM__$$Base;
extern unsigned int Image$$__OpenAMP_SHMEM__$$ZI$$Length;
#define SHM_START_ADDRESS (unsigned int)&Image$$__OpenAMP_SHMEM__$$Base
#define SHM_SIZE          ((size_t)&Image$$__OpenAMP_SHMEM__$$ZI$$Length)

[SofLit · Accepted solution]

Add-on:

For IAR in the .icf files add:

define symbol __OPENAMP_region_start__         = 0x38000400;
define symbol __OPENAMP_region_size__          = 0xB000;
export symbol __OPENAMP_region_start__;
export symbol __OPENAMP_region_size__; 

PS: 0x38000400 and 0xB000 are only examples. You can change them if you want. Just be sure they are not interleaving with other used memory regions.