Table of Contents

• Introduction
• Repository Structure
• Architecture Compliance Suites
  • BSA ACS
  • SBSA ACS
  • SYS-MPAM ACS
  • PC-BSA ACS
  • DRTM ACS
  • MemTest ACS
  • PFDI ACS
• Unified ACS
• Security Implications
• Limitations
• Feedback and Support
• License

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Introduction

The Arm sysarch-acs repository is a collection of Architecture Compliance Suites (ACS) that verify compliance with the following Arm System Architecture specifications:

• BSA – Base System Architecture
• SBSA – Server Base System Architecture
• PC-BSA – Personal Computing Base System Architecture
• MPAM (Memory system resource partitioning and monitoring) system component
• DRTM – Dynamic Root of Trust for Measurement
• PFDI – Platform Fault Detection Interface

Additionally, it also includes ACS for ...

• MemTest – Memory Model Consistency tests

These suites enable silicon vendors, system integrators, and firmware developers to ensure platform compliance with Arm architectural standards across pre-silicon and silicon phases.

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📁 Repository Structure

sysarch-acs/
├── apps/
│   ├── baremetal/
│   |   └── <acs_name>_main.c
│   ├── linux/
│   |   └── <acs_name>_app
│   ├── uefi/
│   |   └── <acs_name>_main.c
├── docs/
│   ├── unified/
│   ├── bsa/
│   ├── sbsa/
│   ├── drtm/
│   ├── pfdi/
│   ├── mpam/
│   └── pc_bsa/
├── test_pool/
│   ├── <module>/
├── val/
├── pal/
│   └── baremetal/
│   └── uefi_acpi/
│   └── uefi_dt/
├── tools/
├── mem_test/
|── prebuilt_images/
│   ├── bsa/
│   ├── sbsa/
│   ├── drtm/
│   ├── pfdi/
│   ├── mpam/
│   └── pc_bsa/

• (docs/<acs_name>) : The documentation provides guides and reference materials to help partners onboard ACS
• (prebuilt_images/<acs>) : Prebuilt ACS release binaries location for each supported acs
• (tools/scripts) : Contains build scripts
• (apps/) : Includes the application code for each ACS, which serves as the main entry point to invoke test execution
• (test_pool/) : ACS test source files arranged in module basis
• (val/) : Validation Abstraction Layer providing a platform-independent interface for ACS tests.
• (pal/) : PAL abstraction for platform integration

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Architecture Compliance Suites

BSA Architecture Compliance Suite

Validates platform compliance with Arm BSA specification.

Latest Release

Version	Code Quality	Prebuilt Binary	Spec Reference	Complementary Tests / Dependencies
v1.1.1	REL	Bsa.efi	BSA 1.1	* Exerciser VIP needed for complete coverage of PCIe rules

Reference for Build, Execution, and More

Refer to the BSA ACS README for detailed build steps, execution procedures, additional information, and known limitations.

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SBSA Architecture Compliance Suite

Validates platform compliance with Arm SBSA specification.

Latest Release

Version	Code Quality	Prebuilt Binary	Spec Reference	Complementary Tests / Dependencies
v7.2.3	REL	Sbsa.efi	SBSA 7.2	* BSA ACS needs to run for complete SBSA coverage * Exerciser VIP needed for complete coverage of PCIe rules

Reference for Build, Execution, and More

Refer to the SBSA ACS README for detailed build steps, execution procedures, additional information, and known limitations.

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SYS-MPAM Architecture Compliance Suite

Validates platform compliance with Arm MPAM system component specification.

Latest Release

Version	Code Quality	Prebuilt Binary	Spec Reference
v0.5.0	ALP	Mpam.efi	MPAM system component 1.1

Reference for Build, Execution, and More

Refer to the MPAM ACS README for detailed build steps, execution procedures, additional information, and known limitations.

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PC-BSA Architecture Compliance Suite

Validates platform compliance with Arm PCBSA specification.

Latest Release

Version	Code Quality	Prebuilt Binary	Spec Reference
v0.8.0	BET	PC_Bsa.efi	PCBSA 1.0

Reference for Build, Execution, and More

Refer to the PC BSA ACS README for detailed build steps, execution procedures, additional information, and known limitations.

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DRTM Architecture Compliance Suite

Validates platform compliance with Arm DRTM specification.

Latest Release

Version	Code Quality	Prebuilt Binary	Spec Reference
v0.6.0	ALP	Drtm.efi	DRTM 1.1

Reference for Build, Execution, and More

Refer to the DRTM ACS README for detailed build steps, execution procedures, additional information, and known limitations.

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MemTest (Memory Model Consistency Tests)

Evaluates the correctness and consistency of system memory model.

Latest Release

Version	Code Quality	Prebuilt Binary	Spec Reference
v1.0.0	EAC	Memtest binary	-

Reference for Build, Execution, and More

Refer to the MemTest ACS README for detailed build steps, execution procedures, additional information, and known limitations.

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PFDI Architecture Compliance Suite

Validates platform compliance with Arm PFDI specification.

Latest Release

Version	Code Quality	Prebuilt Binary	Spec Reference
v0.8.0	BET	pfdi.efi	PFDI 1.0 BET0

Reference for Build, Execution, and More

Refer to the PFDI ACS README for detailed build steps, execution procedures, additional information, and known limitations.

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Unified Architecture Compliance Suite

Provides a unified entry point for running BSA, SBSA, PC-BSA validation from a single UEFI application.

Reference for Build, Execution, and More

Refer to the Unified ACS README for build steps, execution procedures, additional information, and known limitations.

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🔐 Security Implications

Running ACS requires elevated privileges.
Only execute on development systems. Do not run on production systems without sanitization.

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💬 Feedback and Support

• Email: [email protected]
• Issues: GitHub Tracker
• Contributions: GitHub Pull Requests

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📄 License

Distributed under Apache v2.0 License. © 2025 Arm Limited and Contributors.

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