boot_fdt.h File Reference

Boot firmware device tree helpers. More...

#include <stddef.h>
#include <stdint.h>

Go to the source code of this file.

Functions
int	sys_boot_fdt_copy (uint8_t *dst, size_t dst_size, const uint8_t *src, uint32_t *fdt_size)
	Validate and copy a boot firmware device tree blob.

Detailed Description

Boot firmware device tree helpers.

Function Documentation

sys_boot_fdt_copy()

int sys_boot_fdt_copy	(	uint8_t *	dst,
		size_t	dst_size,
		const uint8_t *	src,
		uint32_t *	fdt_size )

Validate and copy a boot firmware device tree blob.

Attention

Available only when the following Kconfig option is enabled:

CONFIG_BOOT_FDT 

.

This helper validates the FDT header magic and total-size field, checks that the blob fits in the caller-provided storage, and copies the blob into that storage. The caller owns the destination buffer and decides how long the copied blob remains available.

Parameters

dst	Destination buffer for the copied FDT.
dst_size	Destination buffer size in bytes.
src	Source FDT pointer.
fdt_size	Output for the FDT size in bytes. Set on success and when returning -ENOSPC.

Return values

0	If the FDT was validated and copied.
-EINVAL	If an argument is invalid or src is not a valid FDT.
-ENOSPC	If dst is too small for the FDT.