delta/coreboot/chrome-ec.git - review.coreboot.org: chrome-ec.git

	Commit message (Collapse)	Author	Age	Files	Lines
*	test/entropy: Add host test and compute entropy	Nicolas Boichat	2017-06-13	1	-8/+40
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Check that added entropy is at least somewhat acceptable. BRANCH=none BUG=b:38486828 TEST=make BOARD=hammer -j tests ./util/flash_ec --board=hammer --image=build/hammer/test-entropy.bin EC console: runtest, get around 4000/1000 (=4) bits of entropy, value matches (roughly) the value obtained using the awk script. TEST=make run-entropy Change-Id: I88d0e9ec0e38ab3ec70d3e8163b8ac1556df978d Reviewed-on: https://chromium-review.googlesource.com/523482 Commit-Ready: Nicolas Boichat <drinkcat@chromium.org> Tested-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
*	hammer: Add board_get_entropy function (and test)	Nicolas Boichat	2017-06-06	1	-0/+60
	This function will be used to generate some entropy using the Clock Recovery System. BRANCH=none BUG=b:38486828 TEST=make BOARD=hammer -j tests ./util/flash_ec --board=hammer --image=build/hammer/test-entropy.bin EC console: runtest TEST=Test fails when no USB connection is active TEST=Test passes when USB connection is active TEST=Pasting the values into: tr ';' '\n' \| awk 'BEGIN { e = 0; tot=16384.0 } { p = $1/tot; if (p > 0) { e -= p*log(p)/log(2) } } END { print e }' shows an entropy > 4 bits per sample. Change-Id: I2363c7bce42c72c33ef0bf3f099d709ee9c13d13 Reviewed-on: https://chromium-review.googlesource.com/518608 Commit-Ready: Nicolas Boichat <drinkcat@chromium.org> Tested-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-by: Vincent Palatin <vpalatin@chromium.org>