IPSJ SIG Technical Report Vol.2017-ARC-225 No.12 Vol.2017-SLDM-179 No.12 Vol.2017-EMB-44 No /3/9 1 1 RTOS DefensiveZone DefensiveZone MPU RTOS

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1 1 1 RTOS DefensiveZone DefensiveZone MPU RTOS RTOS OS Lightweight partitioning architecture for automotive systems Suzuki Takehito 1 Honda Shinya 1 Abstract: Partitioning using protection RTOS has high cost. Therefore, it is not suitable for systems requiring low cost. This paper introduce DefensiveZone, that is partitioning architecture suitable for low cost automotive systems. DefensiveZone realized protection with additional protection hardware and simple virtual machine without using MPU and protection RTOS. As a result of performance evaluation, it could be confirmed that DefensiveZone has less overhead for OS execution and calling trusted function than protection RTOS. 1. ECU Electronic Control System RTOS RTOS RTOS OS ECU ECU RTOS [1] RTOS MPU Memory Protection 1 Graduate School of Information Science Nagoya University Unit ISO26262 DefensiveZone DefensiveZone MPU RTOS DefensiveZone DefensiveZone c 2017 Information Processing Society of Japan 1

2 1 DefensiveZone 2 DefensiveZone. DefensiveZone RTOS 2. DefensiveZone DefensiveZone DefensiveZone [2] 2.1 DefensiveZone MPU RTOS Altera FPGA Nios II[3] Nios II DefensiveZone 0 1 RTOS TOPPERS/ATK2-SC1[4] DefensiveZone 1 DefensiveZone 2 OS 2.2 DefensiveZone 2 DefensiveZone 2 DefensiveZone 3 DZ-INTC NMI DZ-SC DefensiveZone REG WORLD ILLEGAL ACCESS 1 1 DZ-PB c 2017 Information Processing Society of Japan 2

3 5 3 DefensiveZone DefensiveZone 3 RTOS DefensiveZoneMonitor DZ-Monitor DZ-Monitor DZ-Monitor DefensiveZone DefensiveZone ATK2- SC3 3. DefensiveZone 1 c 2017 Information Processing Society of Japan 3

4 3.2 DZ-Monitor 6 DefensiveZone ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) DZ-Monitor DefensiveZone DefensiveZone 4.1 ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) NMI DefensiveZone c 2017 Information Processing Society of Japan 4

5 1 FPGA Altera Quartus II 16.1 nios2-elf-gcc:gcc version Altera DE2-115 Nios II/f 50[MHz] DefensiveZone TOPPERS/ATK2-SC RTOS RTOS TOPPERS/ATK2-SC TOPPERS/A-OSBENCH 1.1[5] 7 T INT DISABLE DefensiveZone RTOS DefensiveZone RTOS RTOS DefensiveZone DefensiveZone 2 10 unsigned int , RTOS DefensiveZone ATK2-SC3 A-OSBENCH 7 ATK2-SC3 DefensiveZone 2µ ATK2-SC3 DefensiveZone ATK2-SC1 OS ATK2-SC3 DefensiveZone DefensiveZone DefensiveZone ATK2-SC3 8 DefensiveZone 0.9µ 10, ATK2-SC3 2.8µ DefensiveZone ATK2-SC3 ATK2-SC3 OS DefensiveZone DefensiveZone 20 DefensiveZone c 2017 Information Processing Society of Japan 5

6 2 DefensiveZone DefensiveZone LE 25,813 29,026 12% /11,4480 /11, % 25% % 1,125,376 2, % /3,981,312 /3,981,312 28% 68% 8 DefensiveZone 2 DefensiveZone µ 10,000 3, µ 10,000 5, µ 10,000 4, DefensiveZone DefensiveZone ATK2-SC3 LE 3 2 LE 2% LE 12% 16% DefensiveZone DefensiveZone DefensiveZone RTOS [6] [1] Dominik Reinhart Gary Morgan An Embedded Hypervisor for Safety-Relevant Automotive E/E-Systems Industrial Embedded Systems (SIES), th IEEE International Symposium [2] ETNET2013 [3] Nios II online available from (accessed ). [4] TOPPERS /ATK2 online available from (accessed ). [5] TOPPERS/A-OSBENCH online available from (accessed ). [6] Symposium on Cryptography and Information Security (SCIS) 2016 c 2017 Information Processing Society of Japan 6

6 2. AUTOSAR 2.1 AUTOSAR AUTOSAR ECU OSEK/VDX 3) OSEK/VDX OS AUTOSAR AUTOSAR ECU AUTOSAR 1 AUTOSAR BSW (Basic Software) (Runtime Environment) Applicat

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