Arm Compiler | Safety – Arm Developer

The certification of safety end-products requires a compiler toolchain used in development to be qualified according to appropriate functional safety standards. The process of qualifying these tools known as ‘Tool Qualification’ or ‘Tool Validation’ can be time-consuming and expensive process. Moreover, it doesn’t offer any differentiation to the end-product. While end-users have to be responsible for the overall tool qualification process, vendors of development tools can make this process much easier by offering tools that are qualified to appropriate safety standards.

Arm Compiler for Functional Safety is a qualified C/C++ toolchain that has been assessed by safety-accredited certification body, TÜV SÜD. The qualified toolchain is suitable for developing embedded software for safety markets including automotive, industrial, medical, railways and aviation.

With a TÜV certificate and a comprehensive Qualification Kit, Arm Compiler for Functional Safety greatly simplifies the overall ‘Tool Qualification’ process allowing end-users to focus on their end-product development.

Arm Compiler for Functional Safety is qualified for developing software that meets the highest level of safety integrity for the following standards:

IEC 61508 (Industrial) – SIL 3
ISO 26262 (Automotive) – ASIL D
EN 50128 (Railways) – SIL 4
IEC 62304 (Medical) – Class C

For other safety standards, many of which have been derived from IEC 61508, the Qualification Kit provides the key information end-users need to perform ‘Tool Validation’.

Safety qualification

Each release of Arm Compiler for Functional Safety goes through extensive testing and a qualification process. The qualification covers the toolchain binaries:

Compiler
Assembler
Linker
Librarian
Image conversion and disassembly tool

Standard C/C++ libraries are included in the product but excluded from the qualification. An optional Certified C Library is available to license separately with specific versions of Arm Compiler for Functional Safety.

Qualification kit

The Qualification Kit provides vital safety information about the toolchain operation, recommended usage, and diagnostic capabilities.

It includes:

Safety Manual - Defines the safety boundary of the toolchain.
Defect Report - Describes the known safety-critical defects.
Development Process - Documents the process used to develop the safety toolchain.
Test Report - Documents the test results from language conformance tests used in qualification.

Safety systems are getting increasingly complex and need to be reliable, highly predictable, even as the product ages, and finally be consistent throughout its lifetime. To achieve this, safety developers require a toolchain that is stable and has minimal change which reduces risk and overhead costs due to re-validation.

Arm Compiler for Functional Safety is derived from, but different to, the standard Arm Compiler product. Each safety branch is hardened by defining a safety boundary and stable feature set prior to qualification.

Each safety branch is maintained for 5 years from market entry and receives regular maintenance updates for safety-critical defects. The updates are qualified and accompanied by a TÜV Certificate and an updated Qualification Kit. Along with Arm's expert technical support, this provides customers with confidence that their projects can be supported for many years.

For customers who need extra assurance and peace of mind, Arm offers bespoke premium support and maintenance services that can be tailored to their needs. For more information, get in touch with us.

Particulars		Arm Compiler 6.6 for Functional Safety	Arm Compiler 5.06 for Functional Safety
Release details	Version	6.6.X (X = 1, 2, 3, …)	5.06uX (X=3, 4, …)
	Latest release	6.6.3	5.06u6
	Market entry	2017	2014
Maintenance	Maintenance term (from market entry)	5 years	5 years
Maintenance	Maintenance status	Active	Legacy (from July 2020)
Features	Arm Architecture support	Armv8, Armv7, Armv6-M	Armv7, Armv6, Armv5, Armv4
Features	Language support	C90, C99, C++98, C++03, C++11	C90, C99, C++03, C++11
Documentation	User documentation	Arm Compiler 6.6 LTM	Arm Compiler 5.06uX
	TÜV Certificate
	Qualification Kit
Optional add-ons	Certified C Library		-
Compatible Arm software	Arm FuSa Run-Time System		-
Compatible Arm software	Arm Software-Test Libraries		-

For faster safety development and go-to-market, the Certified C Library can be licensed separately in addition to the Arm Compiler for Functional Safety. The library is a subset of the standard C library comprising of approximately 200 functions that have been specifically implemented and optimized for use in safety development.

The Certified C Library comes with its own certificate from TÜV SÜD and supports the same functional safety standards as the Arm Compiler for Functional Safety. It is also accompanied with its own Qualification Kit which comprises of the Safety Manual and Defect Report.

Note: The Certified C Library is compatible with specific versions of Arm Compiler for Functional Safety. Please ensure to check for compatibility.

For more information, get in touch with us.

Product name	Certified Arm Compiler 6.6 C Library
Product identification and versioning	6.6.X (X=A, B, C …); Latest release 6.6.A
Architecture support	Armv6-M, Armv7-A, Armv7-R, Armv7-M, Armv8-A, Armv8-R, Armv8-M
Compatibility	Arm Compiler 6.6 for Functional Safety
Maintenance	Until active maintenance of Arm Compiler 6.6 for Functional Safety
Safety documentation

Safety

Introduction

Compiler for Functional Safety

Safety qualification

TÜV Certificate

Qualification kit

Long-term support and maintenance

Safety branch releases

Certified C Library

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