mkubootimage(1) - NetBSD Manual Pages

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MKUBOOTIMAGE(1)         NetBSD General Commands Manual         MKUBOOTIMAGE(1)


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) [-u] 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.

     -u      Update the header in an existing file instead of creating a new
             one.

     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.

NetBSD 9.2                     December 4, 2019                     NetBSD 9.2