Zephyr API Documentation
4.0.0-rc2
A Scalable Open Source RTOS
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devicetree_regions.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2021, Commonwealth Scientific and Industrial Research
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* Organisation (CSIRO) ABN 41 687 119 230.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Generate memory regions from devicetree nodes.
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*/
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#ifndef ZEPHYR_INCLUDE_LINKER_DEVICETREE_REGIONS_H_
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#define ZEPHYR_INCLUDE_LINKER_DEVICETREE_REGIONS_H_
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#include <
zephyr/devicetree.h
>
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#include <
zephyr/sys/util.h
>
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#include <
zephyr/toolchain.h
>
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#define LINKER_DT_NODE_REGION_NAME_TOKEN(node_id) \
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DT_STRING_TOKEN(node_id, zephyr_memory_region)
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#define LINKER_DT_NODE_REGION_NAME(node_id) \
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STRINGIFY(LINKER_DT_NODE_REGION_NAME_TOKEN(node_id))
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#define _DT_COMPATIBLE zephyr_memory_region
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#define _DT_SECTION_PREFIX(node_id) UTIL_CAT(__, LINKER_DT_NODE_REGION_NAME_TOKEN(node_id))
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#define _DT_SECTION_START(node_id) UTIL_CAT(_DT_SECTION_PREFIX(node_id), _start)
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#define _DT_SECTION_END(node_id) UTIL_CAT(_DT_SECTION_PREFIX(node_id), _end)
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#define _DT_SECTION_SIZE(node_id) UTIL_CAT(_DT_SECTION_PREFIX(node_id), _size)
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#define _DT_SECTION_LOAD(node_id) UTIL_CAT(_DT_SECTION_PREFIX(node_id), _load_start)
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#define _REGION_DECLARE(node_id) \
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LINKER_DT_NODE_REGION_NAME_TOKEN(node_id) : \
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ORIGIN = DT_REG_ADDR(node_id), \
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LENGTH = DT_REG_SIZE(node_id)
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#define _SECTION_DECLARE(node_id) \
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LINKER_DT_NODE_REGION_NAME_TOKEN(node_id) (NOLOAD) : \
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{ \
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_DT_SECTION_START(node_id) = .; \
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KEEP(*(LINKER_DT_NODE_REGION_NAME_TOKEN(node_id))) \
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KEEP(*(LINKER_DT_NODE_REGION_NAME_TOKEN(node_id).*)) \
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_DT_SECTION_END(node_id) = .; \
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} > LINKER_DT_NODE_REGION_NAME_TOKEN(node_id) \
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_DT_SECTION_SIZE(node_id) = _DT_SECTION_END(node_id) - _DT_SECTION_START(node_id); \
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_DT_SECTION_LOAD(node_id) = LOADADDR(LINKER_DT_NODE_REGION_NAME_TOKEN(node_id));
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#define LINKER_DT_REGIONS() \
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DT_FOREACH_STATUS_OKAY(_DT_COMPATIBLE, _REGION_DECLARE)
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#define LINKER_DT_SECTIONS() \
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DT_FOREACH_STATUS_OKAY(_DT_COMPATIBLE, _SECTION_DECLARE)
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#endif
/* ZEPHYR_INCLUDE_LINKER_DEVICETREE_REGIONS_H_ */
devicetree.h
Devicetree main header.
util.h
Misc utilities.
toolchain.h
Macros to abstract toolchain specific capabilities.
zephyr
linker
devicetree_regions.h
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