Linux OS for ARM Cortex A9 processor

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We are planning to use ARM Cortex A9 processor with Linux as the embedded OS. Please help us with the following questions:

(1) What is the embedded Linux OS that work well with ARM Cortex A9 processor on Altera Stratix IV dev kit? For example, the DE4 Stratix IV dev kit (EP4SGX530C2).

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The Stratix IV GX does not contain an ARM core.

You need to look on the Altera web site at the SoC devices (Arria and Cyclone).

http://www.altera.com/devices/processor/soc-fpga/proc-soc-fpga.html

http://www.altera.com/devices/processor/arm/cortex-a9/m-arm-cortex-a9.html

Cheers,

Dave