/*
    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.

    This file is part of ChibiOS/RT.

    ChibiOS/RT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    ChibiOS/RT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * @defgroup HAL HAL Driver
 * @brief Hardware Abstraction Layer.
 * @details The HAL driver performs the system initialization and includes
 * the platform support code shared by the other drivers. This driver does
 * contain any API function except for a general initialization function
 * @p halInit() that must be invoked before any HAL service can be used,
 * usually the HAL initialization should be performed immediately before the
 * kernel initialization.<br>
 * Some HAL driver implementations also offer a custom early clock
 * setum function that can be invoked before the C runtime initialization
 * in order to accellerate the startup time.
 *
 * @ingroup IO
 */