Compiling BootLoader with IAR 7.50

Dan Beadle

When I compile C:\ti\TivaWare_C_Series-2.1.2.111\examples\boards\dk-tm4c123g\boot_usb as delivered using IAR 7.50.2, I get the following errors that halt code generation:

Error[Lp049]: there was no reference to __iar_data_init3, but it is needed to initialize section .bss (bl_startup_ewarm.o #6)
Error[Lp048]: the init table "Table" is needed to initialize some variables, but there are no references to it
Error while running Linker

The BootLoader project performs its own .bss initialization and does not need this call.

I found that putting "Lp048, Lp049" options in Linker-->Diagnostics->Suppress These Diagnostics solved the problem and generated the correct code.

over 9 years ago

0 Amit Ashara over 9 years ago

TI__Guru**** 244400 points

Hello Dan.

This is surprising as the build was made with 7.4 version and it did not give any errors.

Regards
Amit

0 Dan Beadle over 9 years ago in reply to Amit Ashara

Intellectual 800 points

I agree.. I used 7.40 for a production build which has been fielded. I went back since updating and got the errors.

I have a trouble report into IAR.

0 Amit Ashara over 9 years ago in reply to Dan Beadle

TI__Guru**** 244400 points

Hello Dan,

Did you try downloading a fresh copy of TivaWare and reattempting the compile?

Regards
Amit

0 Dan Beadle over 9 years ago in reply to Amit Ashara

Intellectual 800 points

Yes, I tried that.

I got the Zip file of TivaWare_C_Series-2.1.2.111
Unzipped again
Compiled with 7.40 --- no errors
Compiled with 7.50 --- same issue - Lp048, 049... Clearly an IAR problem. I think the suppression works... I am able to debug and the code looks right. However, I am still having porting issues that I think are unrelated to the compiler.

My post was just to help the next guy....

Dan

0 Amit Ashara over 9 years ago in reply to Dan Beadle

TI__Guru**** 244400 points

Hello Dan

Yes, it could be an IAR problem and should be reported to IAR

What is the porting issue that you are talking about?

Regards
Amit

0 Dan Beadle over 9 years ago in reply to Dan Beadle

Intellectual 800 points

I got an answer back from IAR...

They suggested I simply add "do not initialize {readwrite };" to the icf link file.

So, it now looks like the old .icf with the yellow text added.

Works fine.

Dan

// Indicate that the noinit values should be left alone. This includes the

// stack, which if initialized will destroy the return address from the

// initialization code, causing the processor to branch to zero and fault.

do not initialize { section .noinit };

do not initialize {readwrite };

// Place the interrupt vectors at the start of flash/SRAM.

0 Amit Ashara over 9 years ago in reply to Dan Beadle

TI__Guru**** 244400 points

Hello Dan,

But did IAR inform why this change?

Regards
Amit

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Compiling BootLoader with IAR 7.50