dtc::dtb Namespace Reference

Classes
struct	output_writer
class	binary_writer
class	asm_writer
struct	header

Enumerations
enum	token_type {   FDT_BEGIN_NODE = 0x00000001, FDT_END_NODE = 0x00000002, FDT_PROP = 0x00000003, FDT_NOP = 0x00000004,   FDT_END = 0x00000009 }

Functions
const char *	token_type_name (token_type t)

Detailed Description

The dtb namespace contains code related to the generation of device tree blobs, the binary representation of flattened device trees. The abstract tree representation calls into this code to generate the output.

Enumeration Type Documentation

enum dtc::dtb::token_type

The token types in the DTB, as defined by §7.4.1 of the ePAPR specification. All of these values are written in big-endian format in the output.

Enumerator:

FDT_BEGIN_NODE	Marker indicating the start of a node in the tree. This is followed by the nul-terminated name. If a unit address is specified, then the name also contains the address, with an @ symbol between the end of the name and the start of the address. The name is then padded such that the next token begins on a 4-byte boundary. The node may contain properties, other nodes, both, or be empty.
FDT_END_NODE	Marker indicating the end of a node.
FDT_PROP	The start of a property. This is followed by two 32-bit big-endian values. The first indicates the length of the property value, the second its index in the strings table. It is then followed by the property value, if the value is of non-zero length.
FDT_NOP	Ignored token. May be used for padding inside DTB nodes.
FDT_END	Marker indicating the end of the tree.

Function Documentation

const char* dtc::dtb::token_type_name

(

token_type

t

)

Returns the token as a string. This is used for debugging and for printing human-friendly error messages about malformed DTB input.