[src/trunk]: src/share/man/man4 Man page for the in-kernel bootloader present...

[uwe <uwe%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/516b1e2cb304
branches:  trunk
changeset: 565258:516b1e2cb304
user:      uwe <uwe%NetBSD.org@localhost>
date:      Sat Apr 03 02:33:40 2004 +0000

description:
Man page for the in-kernel bootloader present on some platforms.

diffstat:

 share/man/man4/kloader.4 |  95 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 95 insertions(+), 0 deletions(-)

diffs (99 lines):

diff -r 461fe39dd7dd -r 516b1e2cb304 share/man/man4/kloader.4
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/share/man/man4/kloader.4  Sat Apr 03 02:33:40 2004 +0000
@@ -0,0 +1,95 @@
+.\"    $NetBSD: kloader.4,v 1.1 2004/04/03 02:33:40 uwe Exp $
+.\"
+.\" Copyright (c) 2004 Valeriy E. Ushakov
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Neither the name of the author nor the names of any
+.\"    contributors may be used to endorse or promote products derived
+.\"    from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd April 3, 2004
+.Dt KLOADER 4
+.Os
+.Sh NAME
+.Nm kloader
+.Nd in-kernel bootloader
+.Sh SYNOPSIS
+.Cd options KLOADER
+.Cd options KLOADER_KERNEL_PATH="\e"/netbsd\e""
+.Sh DESCRIPTION
+The
+.Nm
+is the in-kernel bootloader for platforms that do not have a proper
+firmware.
+.Pp
+Some platforms supported by
+.Nx
+do not have a firmware that can boot
+.Nx
+kernel.
+Examples are game consoles (dreamcast and playstation2 ports), and
+handhelds (hpcarm, hpcmips, and hpcsh ports).
+On such platforms the bootloader is usually a host program that runs
+under the native OS.
+This means that rebooting
+.Nx
+is a lengthy process of booting into the native OS first,
+launching the bootloader program, and finally booting
+.Nx
+again.
+This problem is addressed by
+.Nm ,
+that allows currently running kernel to serve as a bootloader for the
+kernel being booted, thus avoiding the burden of booting into the
+native OS first.
+.Pp
+When
+.Nm
+is configured into the kernel, a call to
+.Xr reboot 2
+causes the
+.Nm
+to load the new kernel into memory, and arrange for control to be
+passed to the new kernel \(em just like a standalone bootloader does.
+The new kernel then boots in an ordinary manner.
+.Sh SEE ALSO
+.Xr reboot 2 ,
+.Xr boot 8 ,
+.Xr reboot 8
+.Sh HISTORY
+.Nm
+first appeared in
+.Nx 1.6 .
+.Sh BUGS
+.Nm
+ignores
+.Fa howto
+and
+.Fa bootstr
+arguments passed to the
+.Xr reboot 2
+system call, and reboots the system with previous boot settings.
+.Pp
+.Nm
+doesn't support booting compressed kernels.
+.Pp
+The hpcarm port doesn't support
+.Nm
+yet.