f697065fda
conditionally include (but ignore failures) /boot/loader.rc.local and /boot/menu.rc.local -- to make customizing the menu easier. Reviewed by: alfred Discussed on: -hackers
249 lines
6.4 KiB
Forth
249 lines
6.4 KiB
Forth
\ Copyright (c) 1999 Daniel C. Sobral <dcs@freebsd.org>
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\ All rights reserved.
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\
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\ Redistribution and use in source and binary forms, with or without
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\ modification, are permitted provided that the following conditions
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\ are met:
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\ 1. Redistributions of source code must retain the above copyright
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\ notice, this list of conditions and the following disclaimer.
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\ 2. Redistributions in binary form must reproduce the above copyright
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\ notice, this list of conditions and the following disclaimer in the
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\ documentation and/or other materials provided with the distribution.
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\
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\ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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\ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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\ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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\ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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\ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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\ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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\ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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\ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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\ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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\ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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\ SUCH DAMAGE.
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\
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\ $FreeBSD$
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s" arch-i386" environment? [if] [if]
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s" loader_version" environment? [if]
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11 < [if]
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.( Loader version 1.1+ required) cr
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abort
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[then]
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[else]
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.( Could not get loader version!) cr
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abort
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[then]
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[then] [then]
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256 dictthreshold ! \ 256 cells minimum free space
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2048 dictincrease ! \ 2048 additional cells each time
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include /boot/support.4th
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include /boot/color.4th
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include /boot/delay.4th
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only forth also support-functions also builtins definitions
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: bootmsg ( -- )
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loader_color? if
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." [37;44mBooting...[0m" cr
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else
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." Booting..." cr
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then
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;
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: try-menu-unset
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\ menu-unset may not be present
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s" beastie_disable" getenv
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dup -1 <> if
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s" YES" compare-insensitive 0= if
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exit
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then
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else
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drop
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then
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s" menu-unset"
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sfind if
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execute
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else
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drop
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then
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s" menusets-unset"
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sfind if
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execute
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else
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drop
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then
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;
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: boot
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0= if ( interpreted ) get_arguments then
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\ Unload only if a path was passed
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dup if
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>r over r> swap
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c@ [char] - <> if
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0 1 unload drop
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else
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s" kernelname" getenv? if ( a kernel has been loaded )
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try-menu-unset
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bootmsg 1 boot exit
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then
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load_kernel_and_modules
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?dup if exit then
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try-menu-unset
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bootmsg 0 1 boot exit
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then
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else
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s" kernelname" getenv? if ( a kernel has been loaded )
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try-menu-unset
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bootmsg 1 boot exit
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then
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load_kernel_and_modules
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?dup if exit then
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try-menu-unset
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bootmsg 0 1 boot exit
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then
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load_kernel_and_modules
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?dup 0= if bootmsg 0 1 boot then
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;
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\ ***** boot-conf
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\
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\ Prepares to boot as specified by loaded configuration files.
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: boot-conf
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0= if ( interpreted ) get_arguments then
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0 1 unload drop
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load_kernel_and_modules
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?dup 0= if 0 1 autoboot then
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;
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also forth definitions also builtins
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builtin: boot
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builtin: boot-conf
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only forth definitions also support-functions
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include /boot/check-password.4th
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\ ***** start
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\
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\ Initializes support.4th global variables, sets loader_conf_files,
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\ processes conf files, and, if any one such file was succesfully
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\ read to the end, loads kernel and modules.
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: start ( -- ) ( throws: abort & user-defined )
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s" /boot/defaults/loader.conf" initialize
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include_conf_files
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include_nextboot_file
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\ Will *NOT* try to load kernel and modules if no configuration file
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\ was succesfully loaded!
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any_conf_read? if
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s" loader_delay" getenv -1 = if
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load_kernel
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load_modules
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else
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drop
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." Loading Kernel and Modules (Ctrl-C to Abort)" cr
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s" also support-functions" evaluate
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s" set delay_command='load_kernel load_modules'" evaluate
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s" set delay_showdots" evaluate
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delay_execute
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then
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then
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;
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\ ***** initialize
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\
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\ Overrides support.4th initialization word with one that does
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\ everything start one does, short of loading the kernel and
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\ modules. Returns a flag
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: initialize ( -- flag )
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s" /boot/defaults/loader.conf" initialize
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include_conf_files
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include_nextboot_file
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any_conf_read?
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;
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\ ***** read-conf
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\
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\ Read a configuration file, whose name was specified on the command
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\ line, if interpreted, or given on the stack, if compiled in.
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: (read-conf) ( addr len -- )
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conf_files string=
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include_conf_files \ Will recurse on new loader_conf_files definitions
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;
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: read-conf ( <filename> | addr len -- ) ( throws: abort & user-defined )
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state @ if
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\ Compiling
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postpone (read-conf)
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else
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\ Interpreting
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bl parse (read-conf)
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then
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; immediate
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\ show, enable, disable, toggle module loading. They all take module from
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\ the next word
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: set-module-flag ( module_addr val -- ) \ set and print flag
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over module.flag !
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dup module.name strtype
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module.flag @ if ." will be loaded" else ." will not be loaded" then cr
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;
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: enable-module find-module ?dup if true set-module-flag then ;
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: disable-module find-module ?dup if false set-module-flag then ;
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: toggle-module find-module ?dup if dup module.flag @ 0= set-module-flag then ;
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\ ***** show-module
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\
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\ Show loading information about a module.
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: show-module ( <module> -- ) find-module ?dup if show-one-module then ;
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\ Words to be used inside configuration files
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: retry false ; \ For use in load error commands
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: ignore true ; \ For use in load error commands
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\ Return to strict forth vocabulary
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: #type
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over - >r
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type
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r> spaces
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;
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: .? 2 spaces 2swap 15 #type 2 spaces type cr ;
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: ?
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['] ? execute
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s" boot-conf" s" load kernel and modules, then autoboot" .?
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s" read-conf" s" read a configuration file" .?
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s" enable-module" s" enable loading of a module" .?
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s" disable-module" s" disable loading of a module" .?
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s" toggle-module" s" toggle loading of a module" .?
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s" show-module" s" show module load data" .?
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s" try-include" s" try to load/interpret files" .?
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;
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: try-include ( -- ) \ see loader.4th(8)
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['] include ( -- xt ) \ get the execution token of `include'
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catch ( xt -- exception# | 0 ) if \ failed
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LF parse ( c -- s-addr/u ) 2drop \ advance >in to EOL (drop data)
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\ ... prevents words unused by `include' from being interpreted
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then
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; immediate \ interpret immediately for access to `source' (aka tib)
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only forth also
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