I want to start the update out of my application as the UserApp does. I have ported the functions but I'm searching for the definition of SlotEndAdd and SlotStartAdd. They are defined as external in sfu_fwimg_regions.h.

[Clark Sann]

Thanks for that tip, @Community member​  I tried that and it did not help. If you remove it does it cause errors? When you add it, does it cause the #if define block in sfu_fwimg_regions.h to become active? I can’t figure out why the if define block is never active.

[MBax.2]

I just edited my post after you replied, also try to add the define symbol for your own app, the secorebin app, sbsfu and the KMS blob.

[MBax.2]

A, shoot forget that, I remembered incorrectly. I only have TEST_PROTECTIONS_C defined for my own app. I did add ENABLE_IMAGE_STATE_HANDLING to sbsfu, secorebin and kmsblob

[MBax.2]

when I remove TEST_PROTECTIONS_C from my projects define symbols and build, I get the errors:

ug/../AWS/ota/app/pal/SFU_Services/sfu_app_new_image.c:54: undefined reference to `SlotStartAdd'

ebug/../AWS/ota/app/pal/SFU_Services/sfu_app_new_image.c:94: undefined reference to `SlotStartAdd'

[Clark Sann]

I am using the SBSFU_v2.6.0 version of SECoreBin, SBSFU, and UserApp to experiment with your changes. The first thing I did was remove test_protections.c from the build of UserApp. That causes several undefined errors.

Then I added TEST_PROTECTIONS_C to UserApp. Still got errors.

Then I added TEST_PROTECTIONS_C to SECoreBin. Before doing that it build. After doing that I have several duplicate references. I am in the process of finding the duplicated references. They seem to be duplicated with references in se_low_level, se_callgate, se_exception, se_fwimg, se_user_application, and se_utils. What a mess.

I'm in no way an expert in complicated projects like this, but I suspect there is a fundamental design problem here somewhere. Either that or I have somehow totally ruined my set of projects for UserApp based on SBSFU v2.6.0. I doubt it because they do build and work....until I remove test_protections.c.

[Clark Sann]

HA! Don't worry about it. I APPRECIATE YOUR HELP! I am have always planned to add ENABLE_IMAGE_STATE_HANDLING after I got everything else working. But what the heck, I am totally stopped right now so I will go ahead and try it. I'm not sure about the KMS blob, where is that and where / how did you add ENABLE_IMAGE_STATE_HANDLING to it?

[MBax.2]

I'm no expert either, I found getting SBSFU up and running quite challenging and ran into bugs too. When I finally got it to work, I jotted down all the steps I took in a notebook to make sure I could reproduce it for future projects. I can share my notes, but not here, it has some client sensitive naming in it I think. Shoot me a mail. Contact info on baxedm.com

[Clark Sann]

OK, when I add ENABLE_IMAGE_STATE_HANDLING to SECoreBin and SBSFU they build. When I then add TEST_PROTECTIONS_C to UserApp, it doesn't build. Instead it complains about multiple definitions of SlotStartAdd, SlotEndAdd, and SlotHeaderAdd in sfu_app_new_image and sfu_fwimg_regions.h.

[Jocelyn RICARD]

Hello guys,

It seems there is a misunderstanding about this TEST_PROTECTIONS_C 

This flag is only used when performing the test of protections in user application.

As you can see in test_protections.c

#include "sfu_fwimg_regions.h" /* required for corruption tests (a real user application should NOT need this file) */

So, when developing your own application and if you want to access to the mappings for managing OTA, you can have a look in fw_update_app.c:

if defined(__CC_ARM) || defined(__ARMCC_VERSION)
#include "mapping_fwimg.h"
#include "mapping_sbsfu.h"
#elif defined (__ICCARM__) || defined(__GNUC__)
#include "mapping_export.h"
#endif /* __CC_ARM || __ARMCC_VERSION */

Basically, take this file as example.

Best regards

Jocelyn

[Clark Sann]

@Jocelyn RICARD​ OK, I understand we are not supposed to use TEST_PROTECTIONS_C. But I am not sure what you are suggesting we do to eliminate the undefined reference to `SlotStartAdd and 'SlotEndAdd' errors. I have tried every combination of the 3 includes you show above, and in every case I still get undefined reference errors.

Furthermore I have been unable to find any documentation about when _CC_ARM, __ARMCC_VERSION, and __ICCARM__ should be used. I would certainly appreciate any documentation you can provide regarding these switches.

It should be easy for you to duplicate what I am seeing. Simply go to your UserApp example and exclude test_protections.c from the build. You should get several undefined reference errors.

I would appreciate knowing what you do to resolve these errors. Everything I have tried fails.

Once I get UserApp to build without test_protections.c, I can use that configuration to make my custom app also build without test_protections.c.

Thank you for looking at this.

Clark