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AGNOSAR® Bootloader

AVIN Systems offers a robust Modular Bootloader Architecture tailored for embedded automotive systems. Designed for both AUTOSAR and non-AUTOSAR-based ECUs, it features secured start-up, OTA-enabled, advanced memory management, integrated diagnostics and reliable communication layers. This bootloader ensures consistent initialisation and seamless integration across safety-critical vehicle platforms.

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Product Highlights

Non-AUTOSAR / OEM Specific

Flexible bootloader solutions tailored for OEM-specific requirements, ensuring compatibility beyond AUTOSAR standards.

CAN and Ethernet-Based

High-speed CAN and Ethernet-based bootloaders for secure and efficient ECU flashing and communication.

Secured Bootloader with HSM Integration

Secured bootloader with Hardware Security Module (HSM) integration for robust automotive cybersecurity.

OTA Compatible

Over-the-air (OTA) compatible bootloader enabling seamless remote ECU updates and enhanced vehicle connectivity.

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AGNOSAR® Bootloader

At the top of the architecture is the Bootloader Task Manager, which acts as the central controller. It coordinates all bootloader operations, manages task execution, and ensures system readiness during start-up.

Software Function Modules (Blue)
These modules handle core bootloader logic and security:
  • Decompression & Decryption: Ensures secure loading of application binaries.
  • Application Validity Interface: Verifies the integrity of the application before execution.
  • Security Module: Manages authentication and secure boot processes.
  • Boot State Manager: Tracks and controls the bootloader’s operational states.
  • CRC Module: Performs cyclic redundancy checks for data integrity.
  • Scheduler & Utilities: Schedules various Bootloader tasks and provides utility functions.
Communication Modules (Orange)
These modules enable diagnostic and communication capabilities:
  • Diagnostic Configuration & UDS: Supports Unified Diagnostic Services for vehicle diagnostics.
  • CAN Transport Layer & CAN Driver: Facilitates communication over Controller Area Network.
  • Diagnostic over IP & TCP/IP: Enables diagnostics via Ethernet and IP protocols.
  • Ethernet Driver: Supports high-speed data exchange over Ethernet.
Memory Management Modules (Green) These modules handle memory operations critical to bootloader functionality:
  • Memory Program Manager: Manages programming of flash memory.
  • Memory Configuration: Defines memory layout and access rules.
  • Bootloader Data: Stores configuration and ECU-specific data.
  • Flash Driver: Interfaces with flash memory hardware for erase/write/read operations.
Hardware-Specific Services (Grey)
These modules provide low-level hardware support:
  • MCU Services: Includes PLL, SPI, MCU, SBC, and watchdog configurations.
  • ECU Services: Supports external watchdogs, EEPROMs, and other ECU-specific hardware.
The AGNOSAR® Bootloader is designed to meet the demands of modern automotive systems, offering robust security, flexible communication, and efficient flashing capabilities. Built on standards like ISO 14229 and ISO 15765, it supports a wide range of features tailored for both development and production environments. Security & Integrity
  • Secure Boot via software libraries or HSM firmware interface
  • Secure Flashing using CRC and SHA-RSA for data integrity
  • AES-128 Security Access for authenticated operations
  • Key Provisioning through software or HSM interface
  • AES Encryption/Decryption for secure data handling
  • Compression Support using LZSS and/or Delta for optimized downloads
  • Rollback Mechanism with soft/hard SWAP A-B for recovery to a working application
  • HSM Firmware Update in closed ECUs
  • Fail-Safe Bootloader Updater with two-step update process
Communication & Diagnostics
  • Multi-tester, Multi-channel Support over CAN, CANFD, and Ethernet
  • UDS Gateway Support for sub-node flashing
  • Customized End-of-Line Support using UDS (e.g., debug lock)
  • Variant Handling for similar ECUs (e.g., cell monitors)
Flashing & Memory Management
  • External Flash Support for download and installation
  • Shared NVM Stack Integration for DIDs and logistic data
  • Native Flashing Logistics Maintenance without mandatory NVM
  • Tool for Application Binary Preparation for flashing.
  • Tool for Flashing.
  • Third-party or OEM-specific Flashing Tools support.
Performance & Optimization
  • Low ROM Footprint: 32Kbytes for CAN (CAN-FD) and 96Kbytes for Ethernet.
  • High Throughput: ~140 KBPS over CANFD @ 2000/500, ~25 KBPS over CAN @ 500
The Flash Driver (FLD) is executed from RAM and plays a critical role in the flashing process. The Flash Driver can be downloaded/loaded by any one of the following methods:
  • Downloaded by the tester tool before the application software is flashed.
  • Optionally loaded from encrypted ROM, ensuring secure execution of flash-related operations.
By isolating flash operations to the FLD, the system minimises the risk of unintended memory programming and enhances overall safety and flexibility during software updates.

Modular Architecture

The bootloader is split into two layers:

⦁ Common Modules: Platform-independent components shared across projects.

⦁ Project-Specific Modules: Hardware-dependent and configurable elements tailored to individual ECU requirements.

This separation allows faster adaptation to new platforms and simplifies maintenance.

Dual Architecture Support

AGNOSAR® Bootloaders support two widely adopted bootloader architectures:
PBL/SBL (Primary/Secondary Bootloader) – Based on the Volvo Cars concept.
BTL/FLD (Flash Bootloader/Flash Driver) – Aligned with HIS specifications.
This dual support ensures compatibility with legacy systems and modern bootloader standards.

Accelerated Development Timeline

Thanks to its modular design and preconfigured components, AGNOSAR® Bootloader development can be completed on an accelerated schedule.

Preconfigured Software & Hardware Testing

Bootloader software is preconfigured for specific ECUs and tested directly on actual hardware. This reduces the integration effort during production to just a few weeks, streamlining the deployment process.

Optimised Flashing Performance

AGNOSAR® Bootloaders are designed to minimise overall flashing time. Key operations—reception, decryption, decompression, programming, and validation- are handled in parallel, leveraging processor capabilities to speed up flashing at End-of-Line (EOL) and service stations.

Porting Services

AVIN’s AGNOSAR® Classic Platform Basic Software is Easy to use, Safety Ready Product, OEM specific Harmonization & Supports SAE J1939 Standard for Trucks, Buses.

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25+ Years Experience

Quarter-century of automotive software expertise with deep industry knowledge

635+ Expert Engineers

Global team of certified automotive software specialists across 7 offices

ISO 26262 Certified

Functional safety compliance for ASIL-D critical automotive systems

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Proven Track Record

Successfully delivered 500+ automotive projects for leading OEMs

Cutting-Edge Technology

Latest tools and frameworks for next-generation vehicle development

Frequently Asked questions

What is the AGNOSAR® Bootloader?

The AGNOSAR® Bootloader is AVIN Systems’ AUTOSAR-compliant software component that manages the secure startup of ECUs and enables software download, update, and reprogramming in line with OEM requirements.

A Bootloader ensures that:

  • ECUs can be updated with new software or patches (Over-the-Air or via diagnostic tools).
  • Secure startup sequences are maintained.
  • Vehicle electronics remain up-to-date without replacing hardware.

The bootloader can be configured to support commonly used automotive protocols such as:

  • CAN / CAN FD
  • LIN
  • Ethernet (DoIP – Diagnostics over IP)

Yes. The AGNOSAR® Bootloader can be integrated into OEM update frameworks to enable OTA software downloads and updates.

It supports security mechanisms such as:

  • Secure flashing (authentication and integrity checks).
  • Encrypted data transfer.
  • Verification of software images before execution.

Yes. The Bootloader is modular and can be tailored to project-specific needs, including communication stacks, memory layouts, and OEM-defined update strategies.

AGNOSAR® Bootloader is hardware-independent and can be adapted to a wide range of automotive microcontrollers via MCALs. AVIN Systems provides integration services for leading semiconductor platforms.

You can request a demo or technical discussion with AVIN Systems. Our team provides integration support, customization, and training to help you adopt the Bootloader seamlessly.

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