Power ISA is actually still big by default, and even on little-endian capable systems starts big endian until changed by the OS. Low-level OPAL calls on OpenPOW

Power ISA is actually still big by default, and even on little-endian capable systems starts big endian until changed by the OS. Low-level OPAL calls on OpenPOWER systems are made big endian, even if the OS is little (the OS has to switch the processor mode).