dtb.h File Reference

#include <stdint.h>
#include <aurora.h>

Include dependency graph for dtb.h:

Go to the source code of this file.

Classes
struct	fdt_header_t
struct	_fdt_prop_

Typedefs
typedef struct _fdt_prop_	fdt_property_t

Functions
AU_EXTERN AU_EXPORT uint32_t	AuDTBSwap32 (uint32_t from)
	AuDTBSwap32 – swaps 32 bit value.
AU_EXTERN AU_EXPORT uint64_t	AuDTBSwap64 (uint64_t from)
	AuDTBSwap64 – swaps 64 bit value.
AU_EXTERN AU_EXPORT uint16_t	AuDTBSwap16 (uint16_t from)
	AuDTBSwap16 – swaps 16 bit value.
AU_EXTERN AU_EXPORT uint32_t *	AuDeviceTreeFindProperty (uint32_t *node, const char *property)
	AuDeviceTreeFindProperty – searches for a property within a node.
AU_EXTERN AU_EXPORT uint32_t *	AuDeviceTreeGetNode (const char *name)
	AuDeviceTreeGetNode – searches and get the offset of the node.
AU_EXTERN AU_EXPORT uint32_t	AuDeviceTreeGetAddressCells (uint32_t *node)
	AuDeviceTreeGetAddressCells – get the value from address cells property.
AU_EXTERN AU_EXPORT uint32_t	AuDeviceTreeGetSizeCells (uint32_t *node)
	AuDeviceTreeGetSizeCells – get the value from size cells property.
AU_EXTERN AU_EXPORT uint64_t	AuDeviceTreeGetRegAddress (uint32_t *node, uint32_t addressCell)
	AuDeviceTreeGetRegAddress – get the MMIO address from reg property.
AU_EXTERN AU_EXPORT uint64_t	AuDeviceTreeGetRegSize (uint32_t *node, uint32_t addressCell, uint32_t sizeCell)
	AuDeviceTreeGetRegSize – get the size value from reg property.
void	AuDeviceTreeInitialize (KERNEL_BOOT_INFO *info)
	AuDeviceTreeInitialize – initialize the device tree.
void	AuDeviceTreeMapMMIO ()
	AuDeviceTreeMapMMIO – Maps the physical device tree address to MMIO address range.

Detailed Description

BSD 2-Clause License

Copyright (c) 2022-2025, Manas Kamal Choudhury All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Typedef Documentation

fdt_property_t

typedef struct _fdt_prop_ fdt_property_t

Function Documentation

AuDeviceTreeFindProperty()

AU_EXTERN AU_EXPORT uint32_t * AuDeviceTreeFindProperty	(	uint32_t *	node,
		const char *	property
	)

AuDeviceTreeFindProperty – searches for a property within a node.

Parameters

node	– Pointer to node offset
property	– Property name

AuDeviceTreeGetAddressCells()

AU_EXTERN AU_EXPORT uint32_t AuDeviceTreeGetAddressCells

(

uint32_t *

node

)

AuDeviceTreeGetAddressCells – get the value from address cells property.

Parameters

node	– Pointer to node

AuDeviceTreeGetNode()

AU_EXTERN AU_EXPORT uint32_t * AuDeviceTreeGetNode

(

const char *

name

)

AuDeviceTreeGetNode – searches and get the offset of the node.

Parameters

name	– Node name

AuDeviceTreeGetRegAddress()

AU_EXTERN AU_EXPORT uint64_t AuDeviceTreeGetRegAddress	(	uint32_t *	node,
		uint32_t	addressCell
	)

AuDeviceTreeGetRegAddress – get the MMIO address from reg property.

Parameters

node	– Pointer to parent node
addressCell	– size of address cell

AuDeviceTreeGetRegSize()

AU_EXTERN AU_EXPORT uint64_t AuDeviceTreeGetRegSize	(	uint32_t *	node,
		uint32_t	addressCell,
		uint32_t	sizeCell
	)

AuDeviceTreeGetRegSize – get the size value from reg property.

Parameters

node	– Pointer to parent node
addressCell	– size of address cell
sizeCell	– value of size cell

AuDeviceTreeGetSizeCells()

AU_EXTERN AU_EXPORT uint32_t AuDeviceTreeGetSizeCells

(

uint32_t *

node

)

AuDeviceTreeGetSizeCells – get the value from size cells property.

Parameters

node	– Pointer to node

AuDeviceTreeInitialize()

void AuDeviceTreeInitialize ( KERNEL_BOOT_INFO *  info )

extern

AuDeviceTreeInitialize – initialize the device tree.

Parameters

fdt_address

– device tree address passed by bootloader

AuDeviceTreeMapMMIO()

void AuDeviceTreeMapMMIO ( )

extern

AuDeviceTreeMapMMIO – Maps the physical device tree address to MMIO address range.

AuDTBSwap16()

AU_EXTERN AU_EXPORT uint16_t AuDTBSwap16

(

uint16_t

from

)

AuDTBSwap16 – swaps 16 bit value.

Parameters

from	– value to swap

AuDTBSwap32()

AU_EXTERN AU_EXPORT uint32_t AuDTBSwap32

(

uint32_t

from

)

AuDTBSwap32 – swaps 32 bit value.

Parameters

from	– value to swap

AuDTBSwap64()

AU_EXTERN AU_EXPORT uint64_t AuDTBSwap64

(

uint64_t

from

)

AuDTBSwap64 – swaps 64 bit value.

Parameters

from	– value to swap