tree a3963b971b6f1a2956e82a2ff7e4ce76aa82350c
parent b8bcaa3ad393c34b7cdd9c8dcd9e9b82e2a34c58
author Simon Glass <sjg@chromium.org> 1370974479 -0700
committer Tom Rini <trini@ti.com> 1372256201 -0400

Add trace library

Add a library which supports tracing of execution using built-in gcc
features and a microsecond timer. This can be used to record a list of
function which are executed, along with a timestamp for each. Later
this information can be sent to the host for processing.

Signed-off-by: Simon Glass <sjg@chromium.org>