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2017-02-20arch/x86: add functions to generate random numbersRobbie Zhang
Using x86 RDRAND instruction, two functions are supplied to generate a 32bit or 64bit number. One potential usage is the sealing key generation for SGX. BUG=chrome-os-partner:62438 BRANCH=NONE TEST=Tested on Eve to generate a 64bit random number. Change-Id: I50cbeda4de17ccf2fc5efc1fe04f6b1a31ec268c Signed-off-by: Robbie Zhang <robbie.zhang@intel.com> Reviewed-on: https://review.coreboot.org/18362 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>