a88cd0fc34
Split the pure init level into two phases this allows for easier migration of the nano kernel init process without resorting to naming or link order to force the ordering of functions at pure init time. The need for change was discovered while moving the system timers to be initialized by the init system. The base timer driver (eg. HPET) must be initialised prior to the system clock being enabled both of which need to happen before nano-kernel init. Change-Id: I7a2994965e48a891a78268080113ac8fccceb261 Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
92 lines
3.5 KiB
C
92 lines
3.5 KiB
C
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/* Copyright (c) 2015 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _INIT_H_
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#define _INIT_H_
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#include <device.h>
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#define __used __attribute__((__used__))
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#define PURE 1
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#define PURE_EARLY 0
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#define PURE_LATE 1
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#define NANO_EARLY 2
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#define NANO_LATE 3
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#define MICRO_EARLY 4
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#define MICRO_LATE 5
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#define APP_EARLY 6
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#define APP_LATE 7
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/** @def __define_initconfig
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*
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* @brief Define an init object
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*
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* @details This macro declares an init object to be placed in a
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* given init level section in the image. This macro should not be used
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* directly.
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*
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* @param cfg_name Name of the config object created with
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* DECLARE_DEVICE_INIT_CONFIG() macro that will be referenced by
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* init object.
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*
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* @param id The init level id where the init object will be placed
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* in the image.
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*
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* @param driver_data The pointer to the driver data for the driver instance.
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* @sa DECLARE_DEVICE_INIT_CONFIG()
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*/
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#define __define_initconfig(cfg_name, id, data) \
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static struct device (__initconfig_##cfg_name##id) __used \
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__attribute__((__section__(".initconfig" #id ".init"))) = { \
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.config = &(config_##cfg_name),\
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.driver_data = data}
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/* Run on interrupt stack; no {micro,nano} kernel objects available */
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#define pure_early_init(cfg, data) __define_initconfig(cfg, 0, data)
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#define pure_init(cfg, data) __define_initconfig(cfg, 1, data)
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#define pure_late_init(cfg, data) __define_initconfig(cfg, 1, data)
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/* Run from nano kernel idle task; no micro kernel objects available */
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#define nano_early_init(cfg, data) __define_initconfig(cfg, 2, data)
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#define nano_late_init(cfg, data) __define_initconfig(cfg, 3, data)
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/* Run from micro kernel idle task. */
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#define micro_early_init(cfg, data) __define_initconfig(cfg, 4, data)
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#define micro_late_init(cfg, data) __define_initconfig(cfg, 5, data)
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/* Run in the idle task; In a nano kernel only system run after
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* nano_late_init(). In a micro kernel system after micro_late_init()
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*/
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#define app_early_init(cfg, data) __define_initconfig(cfg, 6, data)
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#define app_late_init(cfg, data) __define_initconfig(cfg, 7, data)
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#endif /* _INIT_H_ */
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