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authorWerner Zeh <werner.zeh@siemens.com>2017-09-12 07:42:54 +0200
committerWerner Zeh <werner.zeh@siemens.com>2017-09-14 18:12:39 +0000
commit35cceb861c90083ea5dd6ad084141280d905aa36 (patch)
treec66e5e39613aa122471603a32904231974a1bd0c /src/drivers/dec
parent653f019d0d4de5e50281edae2f1d88af58e53388 (diff)
downloadcoreboot-35cceb861c90083ea5dd6ad084141280d905aa36.tar.xz
timestamp: Add function to get time since boot
Add a function to retrieve the elapsed time since boot. For that purpose use the base time in the timestamp table among with the current timestamp at call time of the function. So more precise the returned time is the elapsed time since the timestamp was initialized scaled in microseconds. This was chosen to get a reliable value even on platforms where the TSC might not be reset on software reset or warm start. Change-Id: Ib93ad89078645c0ebe256048cb48f9622c90451f Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/21516 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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