xref: /freebsd/usr.sbin/efidp/efidp.8 (revision cdadbf097128130443a6dc84e756ffcbe925d3d9)
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25.\" $FreeBSD$
26.\"
27.Dd November 21, 2017
28.Dt EFIDP 8
29.Os
30.Sh NAME
31.Nm efidp
32.Nd UEFI Device Path manipulation
33.Sh SYNOPSIS
34.Nm
35.Op Fl fp
36.Op Fl -parse
37.Op Fl -format
38.Sh DESCRIPTION
39This program converts
40.Dq Unified Extensible Firmware Interface
41.Pq UEFI
42Device Paths, as defined in the UEFI standard, to and from binary form.
43Binary and textual forms are defined in Chapter 9 of the UEFI
44Specification.
45.Pp
46.Bl -tag -width 20m
47.It Fl f Fl -format
48Formats a binary UEFI Device Path into its canonical UTF-8 textual form.
49A binary Device Path can be no longer than 8192 bytes.
50The textual form must fit into 4096 bytes.
51.It Fl p Fl -parse
52Parses a UEFI Device Path UTF-8 specification and outputs the binary
53Device Path form.
54Only one device path is parsed, even if there are multiple present in
55the input.
56Leading white space is ignored.
57The resulting binary Device Path can be no longer than 8192 bytes.
58.El
59.Sh SEE ALSO
60Appendix A of the UEFI specification has the format for GUIDs.
61All GUIDs
62.Dq Globally Unique Identifiers
63have the format described in RFC 4122.
64.Pp
65The Unified Extensible Firmware Interface Specification is available
66from
67.Pa www.uefi.org .
68.Sh HISTORY
69The
70.Nm
71utility first appeared in
72.Fx 11.1 .
73