#include "libfdt_env.h"
#include <fdt.h>
#include <libfdt.h>
#include "libfdt_internal.h"

Include dependency graph for fdt.c:

Functions
int32_t	fdt_ro_probe_ (const void *fdt)

static int	check_off_ (uint32_t hdrsize, uint32_t totalsize, uint32_t off)

static int	check_block_ (uint32_t hdrsize, uint32_t totalsize, uint32_t base, uint32_t size)

size_t	fdt_header_size_ (uint32_t version)
	fdt_header_size_ - internal function to get header size from a version number

size_t	fdt_header_size (const void *fdt)
	fdt_header_size - return the size of the tree's header @fdt: pointer to a flattened device tree

int	fdt_check_header (const void *fdt)
	fdt_check_header - sanity check a device tree header @fdt: pointer to data which might be a flattened device tree

const void *	fdt_offset_ptr (const void *fdt, int offset, unsigned int len)

uint32_t	fdt_next_tag (const void fdt, int startoffset, int nextoffset)

int	fdt_check_node_offset_ (const void *fdt, int offset)

int	fdt_check_prop_offset_ (const void *fdt, int offset)

int	fdt_next_node (const void fdt, int offset, int depth)

int	fdt_first_subnode (const void *fdt, int offset)
	fdt_first_subnode() - get offset of first direct subnode @fdt: FDT blob @offset: Offset of node to check

int	fdt_next_subnode (const void *fdt, int offset)
	fdt_next_subnode() - get offset of next direct subnode @fdt: FDT blob @offset: Offset of previous subnode

const char *	fdt_find_string_ (const char strtab, int tabsize, const char s)

int	fdt_move (const void fdt, void buf, int bufsize)
	fdt_move - move a device tree around in memory @fdt: pointer to the device tree to move @buf: pointer to memory where the device is to be moved @bufsize: size of the memory space at buf

Function Documentation

◆ check_block_()

static int check_block_	(	uint32_t	hdrsize,
		uint32_t	totalsize,
		uint32_t	base,
		uint32_t	size
	)

static

◆ check_off_()

static int check_off_	(	uint32_t	hdrsize,
		uint32_t	totalsize,
		uint32_t	off
	)

static

◆ fdt_check_header()

int fdt_check_header ( const void * fdt )

fdt_check_header - sanity check a device tree header @fdt: pointer to data which might be a flattened device tree

fdt_check_header() checks that the given buffer contains what appears to be a flattened device tree, and that the header contains valid information (to the extent that can be determined from the header alone).

returns: 0, if the buffer appears to contain a valid device tree -FDT_ERR_BADMAGIC, -FDT_ERR_BADVERSION, -FDT_ERR_BADSTATE, -FDT_ERR_TRUNCATED, standard meanings, as above

◆ fdt_check_node_offset_()

int fdt_check_node_offset_	(	const void *	fdt,
		int	offset
	)

◆ fdt_check_prop_offset_()

int fdt_check_prop_offset_	(	const void *	fdt,
		int	offset
	)

◆ fdt_find_string_()

const char * fdt_find_string_	(	const char *	strtab,
		int	tabsize,
		const char *	s
	)

◆ fdt_first_subnode()

int fdt_first_subnode	(	const void *	fdt,
		int	offset
	)

fdt_first_subnode() - get offset of first direct subnode @fdt: FDT blob @offset: Offset of node to check

Return: offset of first subnode, or -FDT_ERR_NOTFOUND if there is none

◆ fdt_header_size()

size_t fdt_header_size ( const void * fdt )

fdt_header_size - return the size of the tree's header @fdt: pointer to a flattened device tree

Return: size of DTB header in bytes

◆ fdt_header_size_()

size_t fdt_header_size_ ( uint32_t version )

fdt_header_size_ - internal function to get header size from a version number

Version: : devicetree version number

Return: size of DTB header in bytes

◆ fdt_move()

int fdt_move	(	const void *	fdt,
		void *	buf,
		int	bufsize
	)

fdt_move - move a device tree around in memory @fdt: pointer to the device tree to move @buf: pointer to memory where the device is to be moved @bufsize: size of the memory space at buf

fdt_move() relocates, if possible, the device tree blob located at fdt to the buffer at buf of size bufsize. The buffer may overlap with the existing device tree blob at fdt. Therefore, fdt_move(fdt, fdt, fdt_totalsize(fdt)) should always succeed.

returns: 0, on success -FDT_ERR_NOSPACE, bufsize is insufficient to contain the device tree -FDT_ERR_BADMAGIC, -FDT_ERR_BADVERSION, -FDT_ERR_BADSTATE, standard meanings

◆ fdt_next_node()

int fdt_next_node	(	const void *	fdt,
		int	offset,
		int *	depth
	)

◆ fdt_next_subnode()

int fdt_next_subnode	(	const void *	fdt,
		int	offset
	)

fdt_next_subnode() - get offset of next direct subnode @fdt: FDT blob @offset: Offset of previous subnode

After first calling fdt_first_subnode(), call this function repeatedly to get direct subnodes of a parent node.

Return: offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more subnodes

◆ fdt_next_tag()

uint32_t fdt_next_tag	(	const void *	fdt,
		int	startoffset,
		int *	nextoffset
	)

◆ fdt_offset_ptr()

const void * fdt_offset_ptr	(	const void *	fdt,
		int	offset,
		unsigned int	len
	)

◆ fdt_ro_probe_()

int32_t fdt_ro_probe_ ( const void * fdt )

Functions