c++ version of the firmware utilities.

This was translated from the original python scripts.
For more information (including the test procedure) please refer to http://codereview.chromium.org/2421006/show

Review URL: http://codereview.chromium.org/2656004
5 files changed
tree: 389dd319c945c7f8e61c120b5d1072e771242563
  1. gpio_setup.cc
  2. Makefile
  3. reboot_mode.cc