\" $NetBSD: loadbsd.8,v 1.7 2023/12/23 20:15:19 andvar Exp $

\" $NetBSD: loadbsd.8,v 1.7 2023/12/23 20:15:19 andvar Exp $
Dd December 23, 2023
Dt LOADBSD 8 x68k
Os
Sh NAME
Nm loadbsd
Nd load and boot NetBSD/x68k kernel from Human68k
Sh SYNOPSIS
Nm loadbsd.x
Op Fl hvV
Op Fl abDNqs
Op Fl r Ar root_device
Ar kernel_file
Sh DESCRIPTION
Nm
is a program runs on Human68k.
It loads and executes the specified
Nx Ns Tn /x68k
kernel.
Pp
The options (for
Nm
itself) are as follows:
Bl -tag -width flag
It Fl h
Show help and exit.
It Fl N
Do not execute the kernel, if specified in combination with boot options.
It Fl v
Enable verbose mode.
It Fl V
Print version of
Nm
and exit.
El
Pp
The options for
Nx
kernel are as follows:
Bl -tag -width flag
It Fl a
Auto (multi-user) boot.
This disables
Fl s
flag.
It Fl b
Ask boot device during boot.
Pass
Dv RB_ASKNAME
boot flag to the kernel.
It Fl D
Enter kernel debugger.
Pass
Dv RB_KDB
boot flag to the kernel.
It Fl r Ar root_device
Specify boot device, which shall be mounted as root device.
The default device is
Sq Li sd@0,0:a .
Note that the boot device name is
Em not
the same as that of
Nx .
See
Sx BOOT DEVICE NAMES
below.
It Fl q
Boot the system in quiet mode.
Pass
Dv AB_QUIET
boot flag to the kernel.
It Fl s
Single user boot.
Pass
Dv RB_SINGLE
boot flag to the kernel.
This disables
Fl a
flag.
This flag is set by default.
El
Pp
Although listed separately, the options may be in any order.
Sh BOOT DEVICE NAMES
The format of boot device names is:
Pp
Dl "[/interface/]dev@unit[,lun][:partition]"
Pp
Bl -tag -width Fl
It interface
SCSI interface type.
One of:
Sq Li spc@0 ,
Sq Li spc@1 ,
Sq Li mha@0 .
If the dev is a SCSI device, and interface is omitted,
the current boot interface is used.
It dev
Device type.
One of:
Sq Li fd
(floppy disk drive),
Sq Li sd
(SCSI disk),
Sq Li cd
(SCSI CD-ROM),
Sq Li md
(Memory disk).
It unit
Device unit #.
You must specify the target SCSI ID if dev is a SCSI device.
It lun
SCSI LUN #.
0 is assumed if omitted.
It partition
Partition letter of device.
Partition
Sq Li a
is used if omitted.
El
Sh FILES
Bl -tag -width /usr/mdec/loadbsd.xxxx -compact
It Pa /usr/mdec/loadbsd.x
You will find this program here.
El
Sh SEE ALSO
Xr reboot 2 ,
Xr x68k/boot 8
Sh HISTORY
The
Nm
utility first appeared in
Nx 1.4 .
Sh BUGS
Nm
reads the entire kernel image at once,
and requires enough free area on the main memory.