Creating an absolutely placed, checksum-protected library

Technical Note 71483

Targets:
ARM

Component:
Linker

Updated:
9/17/2013 11:16 AM

Introduction

This Technical Note shows how to create an absolutely placed library (functions and data), that can be integrity-checked using a checksum.

Applies to

This Technical Note applies to IAR Embedded Workbench for ARM. And it focuses on the Cortex-M core.

Background

The idea is that the library can be separately verified and possibly certified once, and later on used by other applications. The library is compiled and linked in a separate Embedded Workbench project.

The output is one ordinary ELF (or HEX) file, and one output file containing the exported symbols. The symbols are exported using the “isymexport“-tool, described in the C/C++ Development Guide, chapter “The IAR Absolute Symbol Exporter - isymexport”.

Solution

See the pdf document Creating an absolutely placed library and the example project Example project (IAR Embedded Workbench for ARM 6.30.7) 2.zip.

 

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