Quick introduction about OpenPOWER and why chosen by Libre-soc

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+# OpenPOWER
+In the late 1980s [[!wikipedia IBM]] developed a POWER family of processors.
+This evolved to a specification known as the Power ISA. In 2019 IBM made the Power ISA [[!wikipedia Open_source]] to be looked after by the existing [[!wikipedia OpenPOWER_Foundation]]. Here is a longer history of [[!wikipedia IBM_POWER_microprocessors]].
+
+Libre-soc is basing its [[Simple-V Vectorisation|sv]] CPU extensions on OpenPOWER because it wants to be able to specify a machine that can be completely trusted.
+
 # Evaluation
 
 EULA released! looks good.