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freebsd-dev/stand/lua/loader.lua

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Add the lua scripts from the lua-bootloader SoC These are the .lua files from from Pedro Souza's 2014 Summer of Code project. Rui Paulo, Pedro Arthur and Wojciech A. Koszek also contributed. Obtained from: https://wiki.freebsd.org/SummerOfCode2014/LuaLoader Sponsored by: Google Summer of Code Improve the SoC lua menu code to bring it in line with forth menu functionality Submitted by: Zakary Nafziger Sponsored by: FreeBSD Foundation Use loader.setenv and loader.unsetenv instead of loader.perform Convert from include("/boot/foo.lua") to foo = require("foo"); to bring in line with latest lua module conventions. Enforce a uniform style for the new .lua files: o hard tab indenation for 8 spaces o don't have if foo then bar; else bas; end on one line MFC After: 1 month Relnotes: yes Differential Review: https://reviews.freebsd.org/D14295
2018-02-12 15:32:00 +00:00
--
Add SPDX tags to lua files
2018-02-23 02:51:35 +00:00
-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
--
Add the lua scripts from the lua-bootloader SoC These are the .lua files from from Pedro Souza's 2014 Summer of Code project. Rui Paulo, Pedro Arthur and Wojciech A. Koszek also contributed. Obtained from: https://wiki.freebsd.org/SummerOfCode2014/LuaLoader Sponsored by: Google Summer of Code Improve the SoC lua menu code to bring it in line with forth menu functionality Submitted by: Zakary Nafziger Sponsored by: FreeBSD Foundation Use loader.setenv and loader.unsetenv instead of loader.perform Convert from include("/boot/foo.lua") to foo = require("foo"); to bring in line with latest lua module conventions. Enforce a uniform style for the new .lua files: o hard tab indenation for 8 spaces o don't have if foo then bar; else bas; end on one line MFC After: 1 month Relnotes: yes Differential Review: https://reviews.freebsd.org/D14295
2018-02-12 15:32:00 +00:00
-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
lualoader: Add ability to intercept cli commands If we failed to execute the input line as pure lua, run the command through parse for consistent argument parsing. Pass the parsed arguments through to a global "cli_execute" written in Lua, which is expected to either handle it or pass it back through to interp_builtin_cmd (via loader.command). lua-handled cli commands will then exist as globals in whatever module they most belong in, and invocations at the loader prompt will magically dispatch to them if they exist. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D14450
2018-02-20 17:46:50 +00:00
-- Copyright (c) 2018 Kyle Evans <kevans@FreeBSD.org>
Add the lua scripts from the lua-bootloader SoC These are the .lua files from from Pedro Souza's 2014 Summer of Code project. Rui Paulo, Pedro Arthur and Wojciech A. Koszek also contributed. Obtained from: https://wiki.freebsd.org/SummerOfCode2014/LuaLoader Sponsored by: Google Summer of Code Improve the SoC lua menu code to bring it in line with forth menu functionality Submitted by: Zakary Nafziger Sponsored by: FreeBSD Foundation Use loader.setenv and loader.unsetenv instead of loader.perform Convert from include("/boot/foo.lua") to foo = require("foo"); to bring in line with latest lua module conventions. Enforce a uniform style for the new .lua files: o hard tab indenation for 8 spaces o don't have if foo then bar; else bas; end on one line MFC After: 1 month Relnotes: yes Differential Review: https://reviews.freebsd.org/D14295
2018-02-12 15:32:00 +00:00
-- 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.
--
-- $FreeBSD$
--
lualoader: Add note about importance of including the cli module early
2018-03-05 00:59:55 +00:00
-- The cli module should be included first here. Some of the functions that it
-- defines are necessary for the Lua-based loader to operate in general.
-- Other modules will also need some of the functions it defines to safely
-- execute loader commands.
lualoader: Address some 'luacheck' concerns luacheck pointed out an assortment of issues, ranging from non-standard globals being created as well as unused parameters, variables, and redundant assignments. Using '_' as a placeholder for values unused (whether it be parameters unused or return values unused, assuming multiple return values) feels clean and gets the point across, so I've adopted it. It also helps flag candidates for cleanup later in some of the lambdas I've created, giving me an easy way to re-evaluate later if we're still not using some of these features.
2018-02-22 04:15:02 +00:00
require("cli")
lualoader: Setup default color scheme if we're using colors The console may have been set for different colors before lualoader kicks in; notably, a black-on-white color scheme is not necessarily what we're expecting. While here, make color.default() a composition of color.escape() instead of rewriting the escape sequence to make it more obvious what it's achieving: a white-on-black color scheme with no attributes set. Reported by: emaste, whose eyes may rest easily
2018-03-19 15:48:31 +00:00
local color = require("color")
lualoader: Re-work menu skipping bits This is motivated by a want to reduce heap usage if the menu is being skipped. Currently, the menu module must be loaded regardless of whether it's being skipped or not, which adds a cool ~50-100KB worth of memory usage. Move the menu skip logic out to core (and remove a debug print), then check in loader.lua if we should be skipping the menu and avoid loading the menu module entirely if so. This keeps our memory usage below ~115KB for a boot with the menu stripped. Also worth noting: with this change, we no longer explicitly invoke autoboot if we're skipping the menu. Instead, we let the standard loader behavior apply: try to autoboot if we need to, then drop to a loader prompt if not or if the autoboot sequence is interrupted. The only thing we still handle before dropping to the loader autoboot sequence is loadelf(), so that we can still apply any of our kernel loading behavior.
2018-02-26 15:37:32 +00:00
local core = require("core")
lualoader: Drop terminating semicolons This was previously chosen out of convenience, as we had a mixed style and needed to be consistent. I started learning Lua on Friday, so I switched everything over. It is not a very lua-nic convention, though, so drop it. Excessive parenthesizing around conditionals is next on the chopping block.
2018-02-21 01:10:03 +00:00
local config = require("config")
local password = require("password")
lualoader: Fix menu skipping with loader.conf(5) vars Earlier efforts to stop loading the menu broke the ability to skip the menu with, e.g., beastie_disable in loader.conf(5) as it was decided before configuration was read. Defer bringing in the menu module until we've loaded configuration so that we can make a more informed decision on whether the menu should be skipped or not.
2018-04-06 15:19:48 +00:00
-- The menu module will be brought in after config has loaded if we actually
-- need it.
local menu
lualoader: Bring in local.lua module if it exists Provide a way for out-of-tree users of lualoader to patch into the loader system without having to modify our distributed scripts. Do note that we can't really offer any API compatibility guarantees at this time due to the evolving nature of lualoader right now. This still has some utility as local modules may add commands at the loader prompt without relying heavily on lualoader features- this specific functionality is less likely to change without more careful consideration. Reviewed by: cem (earlier version) Differential Revision: https://reviews.freebsd.org/D14439
2018-02-21 02:35:13 +00:00
lualoader: Implement try_include and use it for including the local module This provides a way to optionally include a module without having to wrap it in filesystem checks. try_include is a little more robust, using the lua search path instead of forcing us to explicitly consider all of the places we could want to include a module. Errors are still generally raised from trying to load the module, but ENOENT will not get raised unless we're doing a verbose load. This will also be used to split out logo/brand graphics into their own files so that we can safely scale up the number of graphics included without worrying about the extra memory consumption- opting to lazily load graphics instead. Reviewed by: cem Differential Revision: https://reviews.freebsd.org/D14658
2018-03-26 19:01:22 +00:00
try_include("local")
Add the lua scripts from the lua-bootloader SoC These are the .lua files from from Pedro Souza's 2014 Summer of Code project. Rui Paulo, Pedro Arthur and Wojciech A. Koszek also contributed. Obtained from: https://wiki.freebsd.org/SummerOfCode2014/LuaLoader Sponsored by: Google Summer of Code Improve the SoC lua menu code to bring it in line with forth menu functionality Submitted by: Zakary Nafziger Sponsored by: FreeBSD Foundation Use loader.setenv and loader.unsetenv instead of loader.perform Convert from include("/boot/foo.lua") to foo = require("foo"); to bring in line with latest lua module conventions. Enforce a uniform style for the new .lua files: o hard tab indenation for 8 spaces o don't have if foo then bar; else bas; end on one line MFC After: 1 month Relnotes: yes Differential Review: https://reviews.freebsd.org/D14295
2018-02-12 15:32:00 +00:00
lualoader: Drop terminating semicolons This was previously chosen out of convenience, as we had a mixed style and needed to be consistent. I started learning Lua on Friday, so I switched everything over. It is not a very lua-nic convention, though, so drop it. Excessive parenthesizing around conditionals is next on the chopping block.
2018-02-21 01:10:03 +00:00
config.load()
lualoader: Fix menu skipping with loader.conf(5) vars Earlier efforts to stop loading the menu broke the ability to skip the menu with, e.g., beastie_disable in loader.conf(5) as it was decided before configuration was read. Defer bringing in the menu module until we've loaded configuration so that we can make a more informed decision on whether the menu should be skipped or not.
2018-04-06 15:19:48 +00:00
if not core.isMenuSkipped() then
menu = require("menu")
end
UEFI: Ditch console mode setting, choose optimal GOP mode later in boot boot1 is too early to be deciding a good resolution. Console modes don't map cleanly/predictably to actual screen resolutions, and GOP does not reflect the actual screen resolution after a console mode change. Rip it out. Add an efi-autoresizecons command to loader to choose an optimal screen resolution based on the current environment. We'll explicitly execute this later, preferably before we draw anything of value but after we load config and pick up any tunables we may need to decide where we're going. This method also allows us to actually pass the correct framebuffer information on to the kernel. UGA autoresizing is not implemented because it doesn't have the kind of mode enumeration that GOP does. If an interested person with relevant hardware could get in contact, we can take a look at implementing UGA autoresize. This effectively "fixes" the breakage caused by r327058, but doesn't actually set the resolution correctly until the interpreter calls efi-autoresizcons. The lualoader version of this has been included for reference; the forth equivalent will follow. Reviewed by: imp (with some hestitation), manu Differential Revision: https://reviews.freebsd.org/D14788
2018-03-21 20:36:57 +00:00
if core.isUEFIBoot() then
loader.perform("efi-autoresizecons")
end
lualoader: Setup default color scheme if we're using colors The console may have been set for different colors before lualoader kicks in; notably, a black-on-white color scheme is not necessarily what we're expecting. While here, make color.default() a composition of color.escape() instead of rewriting the escape sequence to make it more obvious what it's achieving: a white-on-black color scheme with no attributes set. Reported by: emaste, whose eyes may rest easily
2018-03-19 15:48:31 +00:00
-- Our console may have been setup for a different color scheme before we get
-- here, so make sure we set the default.
if color.isEnabled() then
printc(color.default())
end
lualoader: Drop terminating semicolons This was previously chosen out of convenience, as we had a mixed style and needed to be consistent. I started learning Lua on Friday, so I switched everything over. It is not a very lua-nic convention, though, so drop it. Excessive parenthesizing around conditionals is next on the chopping block.
2018-02-21 01:10:03 +00:00
password.check()
lualoader: Re-work menu skipping bits This is motivated by a want to reduce heap usage if the menu is being skipped. Currently, the menu module must be loaded regardless of whether it's being skipped or not, which adds a cool ~50-100KB worth of memory usage. Move the menu skip logic out to core (and remove a debug print), then check in loader.lua if we should be skipping the menu and avoid loading the menu module entirely if so. This keeps our memory usage below ~115KB for a boot with the menu stripped. Also worth noting: with this change, we no longer explicitly invoke autoboot if we're skipping the menu. Instead, we let the standard loader behavior apply: try to autoboot if we need to, then drop to a loader prompt if not or if the autoboot sequence is interrupted. The only thing we still handle before dropping to the loader autoboot sequence is loadelf(), so that we can still apply any of our kernel loading behavior.
2018-02-26 15:37:32 +00:00
-- menu might be disabled
if menu ~= nil then
menu.run()
else
-- Load kernel/modules before we go
config.loadelf()
end
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