NAME
mkubootimage —
create U-Boot loader
image
SYNOPSIS
mkubootimage |
[-h] -A
(arm|arm64|i386|mips|mips64|or1k|powerpc|sh)
-a address
[-C (bz2|gz|lzma|lzo|none)]
[-E
address]
[-e
address]
[-f (arm64|uimg)]
[-m magic]
-n image
[-O
(freebsd|linux|netbsd|openbsd)] -T
(fs|kernel|kernel_noload|ramdisk|standalone)
source destination |
DESCRIPTION
The
mkubootimage utility is used to create an image for Das
U-Boot, the “Universal Boot Loader”.
The arguments are as follows:
-
-
- -A
(arm|arm64|i386|mips|mips64|or1k|powerpc|sh)
- Defines the architecture. This is required for
“uimg” format images.
-
-
- -a
address
- Sets the image load address. This is an integer between 0
and
UINT32_MAX
. This is required for all
“uimg” image types except for script, ramdisk, and
kernel_noload.
-
-
- -C
(bz2|gz|lzma|lzo|none)
- Defines the compression. The default is
“none”.
-
-
- -E
address
- Define the entry point. This is an integer between 0 and
UINT32_MAX
. This option is the same as
-e but it inverts the bytes to convert the 32 bit
integer from little to big endian (or vice versa). If -E
or -e are not set, the entry point defaults to the image
load address (-a).
-
-
- -e
address
- Define the entry point. This is an integer between 0 and
UINT32_MAX
. If -E or
-e are not set, the entry point defaults to the image
load address (-a).
-
-
- -f
(arm64|uimg)
- Defines the output image format type. The default is
“uimg”.
-
-
- -h
- Display the usage and exit.
-
-
- -m
magic
- Set the magic used for “uimg” format images.
This is an integer between 0 and
UINT32_MAX
. The
default is “0x27051956”.
-
-
- -n
image
- Defines the image name. This is required.
-
-
- -O
(freebsd|linux|netbsd|openbsd)
- Defines the operating system type. The default OS name is
“netbsd”.
-
-
- -T
(fs|kernel|kernel_noload|ramdisk|standalone|script)
- Defines the image type. This is required for
“uimg” format images.
The required
source argument is the filename of the kernel
that is read. The required
destination argument is the
filename of the image file that is created.
EXIT STATUS
mkubootimage returns 1 on failure to read the kernel, generate
a header, or create the image.
EXAMPLES
Before the image is written, the header is displayed to standard out; for
example:
magic: 0x27051956
time: Tue Jun 7 15:58:41 2011
size: 2482203
load addr: 0x00020000
entry point: 0x00020000
data crc: 0x700fdf53
os: 2 (netbsd)
arch: 7 (powerpc)
type: 2 (kernel)
comp: 1 (gz)
name: NetBSD/evbppc 5.99.52 (INSTALL_PMPPC)
header crc: 0x94ea96cf
SEE ALSO
“Das U-Boot - the Universal Boot Loader”
http://www.denx.de/wiki/U-Boot/
HISTORY
The
mkubootimage command first appeared in
NetBSD 6.0.
AUTHORS
The
mkubootimage utility was originally written by
Jared McNeill. This manual page was written by
Jeremy C. Reed.