Build the composite help file from the generic and architecture-specific

help files, sorting topics and subtopics to allow maximum flexibility.

sys/boot/common/help.common

@@ -105,7 +105,7 @@
 	The set command is used to set variables.
 
 ################################################################################
-# Tset Sauotboot_delay DSet the default autoboot delay
+# Tset Sautoboot_delay DSet the default autoboot delay
 
 	set autoboot_delay=<value>
 
@@ -120,6 +120,45 @@
 	It may be overridden by setting the bootfile variable to a 
 	semicolon-separated list of paths, which will be searched for in turn.
 
+################################################################################
+# Tset Sboot_askname DPrompt for root device when kernel is booted
+
+	set boot_askname
+
+	Instructs the kernel to prompt the user for the name of the root device
+	when the kernel is booted.
+
+################################################################################
+# Tset Sboot_ddb DDrop to the kernel debugger (DDB) when the kernel is loaded
+
+	set boot_ddb
+
+	Instructs the kernel to start in the DDB debugger, rather than
+	proceeding to initialise when booted.
+
+################################################################################
+# Tset Sboot_gdb DSelect gdb-remote mode for kernel debugger
+
+	set boot_gdb
+
+	Selects gdb-remote mode for the kernel debugger by default.
+
+################################################################################
+# Tset Sboot_single DRequest the kernel start in single-user mode
+
+	set boot_single
+
+	Prevents the kernel from initiating a multi-user startup, single-user
+	mode will be entered when the kernel has finished device probes.
+
+################################################################################
+# Tset Sboot_verbose DDisplay verbose device probes and debugging information
+
+	set boot_verbose
+
+	Setting this variable causes extra debugging information to be printed
+	by the kernel during the boot phase.
+
 ################################################################################
 # Tset Sconsole DSet the current console
 

sys/boot/common/merge_help.pl

@@ -0,0 +1,184 @@
+#!/usr/bin/perl
+#
+# Copyright (c) 1998 Nick Hibma
+# 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. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# 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 AUTHOR 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.
+#
+#
+#
+# Reads all the files mentioned on the command line (or stdin) and combines
+# them into one.
+#
+# The files must have the following format:
+#
+# ######################### (line is ignored)
+# # Ttopic Dhello world (short description)
+#     This is the long description and can span
+# multiple lines and empty
+#
+# ones.
+# ########################### (this line is again ignored)
+# # Ttopic Ssubtopic Dagain a short description
+# a subtopic is a topic that will connected under the subtree of
+# topic.
+
+use FileHandle;
+
+# Declaration of constants
+#
+$SOD 	= 'D';				# Start of description character
+$SLABEL = '_sdescr';	   # Short description label
+$LLABEL = '_ldescr';	   # Long description label
+
+# Global variables
+#
+
+# Read the command line parameters
+#
+while ( $arg = shift @ARGV ) {
+	if ( $arg eq '-h' ) {
+		die "$0 [-h] [files ...]\nno filenames or '-' as a filename reads stdin\n";
+	} else {
+		push @files, $arg;
+	}
+}
+
+# No files to process? Read STDIN
+#
+push @files, '-'           # no files found? Process STDIN
+	if $#files == -1;
+
+# Perform processing on each file
+#
+foreach $filename ( @files ) {
+	if ( $filename eq '-' ) {
+		$file = STDIN;
+	} else {
+		die "Could not open file $filename, $!"
+			unless $file = new FileHandle $filename;
+	}
+
+	# Process one file and add it to the hash
+	#
+	&add_file($file);
+} 
+
+# Print the results of our processing
+#
+&print_topic($topics, '#'x80 . "\n# ");
+print '#'x80 . "\n";
+
+#require 'z39.50/PerlieZ/debug.pm';
+#debug::Dump($topics, '$topics');
+
+# Make like a tree and leave.
+#
+exit 0;
+
+sub add_file {
+	my ($file) = @_;
+
+	# process a file and add it to the hash
+
+	$line = <$file>;
+	while ( !eof($file) ) {
+		if ( $line =~ s/^#\s+// ) {
+
+			# the line contains a number of parts (separated by whitespace):
+			# (Cl+ )+ Dd+
+			# C is a character not equal to D
+			# l+ is a word without spaces
+			# (Cl+ )+ is a list of words preceded by C and separated by spaces
+			# d+ is a description (can contain spaces)
+			# D is the character in $SOD
+         #
+			# we split it into multiple l+ parts and one d+ part
+			# after that we insert the d+ part at the right point in the tree
+			# (after reading also the long descrescription in the next lines)
+
+			@ar = ();
+			while ( $line =~ s/^([^$SOD]\S+)\s+//o ) {
+				$label = $1;
+				$label .= ' '				# avoid conflicts with hash labels
+					if $label eq $SLABEL or $label eq $LLABEL;
+				push @ar, $label;
+			}
+			$sdescr = $line;				# short descr. is rest of line
+
+			my $ldescr = '';				# read the long description
+			$line = <$file>;
+			while ( !eof($file) and $line !~ m/^#/ ) {
+				$ldescr .= $line;
+				$line = <$file>;
+			}
+
+			$topics = &add_to_hash($topics, $sdescr, $ldescr, @ar);
+		} else {
+			$line = <$file>;
+		}
+	}
+}
+
+sub add_to_hash {
+	my ($hash, $sdescr, $ldescr, @ar) = @_;
+
+	# bit more complicated than usual, because we want to insert
+	# value into an existing tree if possible, or otherwise build it.
+	# Probably could be done with references as well, but this seems neater.
+
+	if ( $#ar == -1 ) {
+		# Create a new leaf (reference to descriptions hash)
+
+		return {$SLABEL=>$sdescr, $LLABEL=>$ldescr};
+	} else {
+		# Add subtree to node and if node does not exist, create an empty one 
+		# (reference to a hash of subnodes)
+
+		$hash = {}			# create a new ref to hash on the fly
+			if !$hash;
+		my $label = shift @ar;		# next label in tree to be used
+		$hash->{$label} = &add_to_hash($hash->{$label}, $sdescr, $ldescr, @ar);
+		return $hash;
+	}
+}
+
+sub print_topic {
+	my ($topic, $preprint) = @_;
+
+	# print out a topic and its subtopics recursively
+	# preprint is the string before the current subtopic hash
+	# and is the same for all the subtopics in the current hash
+
+   if ( $topic->{$SLABEL} or $topic->{$LLABEL} ) {
+      # leaf found
+      print $preprint . "$topic->{$SLABEL}$topic->{$LLABEL}";
+   }
+
+   # iterate over all the subtopics
+   my ($label);
+   foreach $label ( sort keys %{ $topic } ) {
+      next
+         if $label eq $SLABEL or $label eq $LLABEL;
+      &print_topic($topic->{$label}, $preprint . $label . ' ');
+	}
+}

sys/boot/i386/loader/Makefile

@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.18 1998/11/04 03:42:36 msmith Exp $
+# $Id: Makefile,v 1.19 1998/11/12 07:40:51 jkh Exp $
 
 BASE=		loader
 PROG=		${BASE}
@@ -29,7 +29,7 @@ LIBFICL=	${.CURDIR}/../../ficl/libficl.a
 CFLAGS+=	-I${.CURDIR}/../../common
 CFLAGS+=	-I${.CURDIR}/../../.. -I.
 
-CLEANFILES+=	vers.c vers.o ${BASE}.list ${BASE}.bin ${BASE}.sym
+CLEANFILES+=	vers.c vers.o ${BASE}.list ${BASE}.bin ${BASE}.sym ${BASE}.help
 
 CFLAGS+=	-Wall
 LDFLAGS=	-nostdlib -static -Ttext 0x1000
@@ -68,7 +68,7 @@ vers.o:
 	sh ${.CURDIR}/newvers.sh ${.CURDIR}/version ${NEWVERSWHAT}
 	${CC} -c vers.c
 
-${BASE}: ${BASE}.bin ${BTXLDR} ${BTXKERN} ${BTXCRT}
+${BASE}: ${BASE}.bin ${BTXLDR} ${BTXKERN} ${BTXCRT} ${BASE}.help
 	btxld -v -f aout -e 0x100000 -o ${.TARGET} -l ${BTXLDR} -b ${BTXKERN} \
 		${BASE}.bin
 
@@ -76,6 +76,18 @@ ${BASE}.bin: ${BASE}.sym
 	cp ${.ALLSRC} ${.TARGET}
 	strip ${.TARGET}
 
+${BASE}.help: help.common help.i386
+	perl ${.CURDIR}/../../common/merge_help.pl ${.ALLSRC} > ${.TARGET}
+
+beforeinstall:
+.if exists(${.OBJDIR}/loader.help)
+	${INSTALL} -C -o ${BINOWN} -g ${BINGRP} -m 444 ${.OBJDIR}/${BASE}.help \
+		${DESTDIR}/boot
+.else
+	${INSTALL} -C -o ${BINOWN} -g ${BINGRP} -m 444 ${.CURDIR}/${BASE}.help \
+		${DESTDIR}/boot
+.endif
+
 # Cannot use ${OBJS} above this line
 .include <bsd.prog.mk>
 

sys/boot/i386/loader/help.i386

@@ -14,3 +14,21 @@
 	only.
 
 ################################################################################
+# Tset Snum_ide_disks DSet the number of IDE disks when booting from a SCSI disk
+
+	set num_ide_disks=<value>
+
+	When booting from a SCSI disk on a system with one or more IDE disks,
+	and where the IDE disks are the default boot device, it is necessary
+	to tell the kernel how many IDE disks there are in order to have it
+	correctly locate the SCSI disk you are booting from.
+
+################################################################################
+# Tset Sboot_userconfig DStart userconfig when the kernel is booted
+
+	set boot_userconfig
+
+	Indicates that the kernel's interactive device configuration program
+	should be run when the kernel is booted.
+
+################################################################################