mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-09-21 03:17:50 +08:00
Alex White
63b21ad5e0
This allows drivers to read configuration data from the device tree if the BSP is built with device tree support.
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSBSPsMicroblaze
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*
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* @brief This header file provides support for the device tree.
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*/
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/*
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* Copyright (C) 2022 On-Line Applications Research Corporation (OAR)
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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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 OWNER 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 LIBBSP_MICROBLAZE_MICROBLAZE_FDT_SUPPORT_H
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#define LIBBSP_MICROBLAZE_MICROBLAZE_FDT_SUPPORT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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/**
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* @brief Get the value of a property from a compatible node in the device tree.
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*
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* @param[in] compatible The 'compatible' string to match against.
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* @param[in] prop_name The property name.
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* @param[in] default_value The default value to return if no compatible node
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* was found or the property was not found.
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*
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* @return The value of the property or the default value.
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*/
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uint32_t try_get_prop_from_device_tree(
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const char *compatible,
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const char *prop_name,
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uint32_t default_value
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);
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#ifdef __cplusplus
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}
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#endif
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#endif /* LIBBSP_MICROBLAZE_MICROBLAZE_FDT_SUPPORT_H */
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