769 lines
31 KiB
Scheme
769 lines
31 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
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;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2016 Chris Marusich <cmmarusich@gmail.com>
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;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
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;;; Copyright © 2017, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
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;;; Copyright © 2019, 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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;;; Copyright © 2019, 2020 Miguel Ángel Arruga Vivas <rosen644835@gmail.com>
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;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
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;;; Copyright © 2020 Stefan <stefan-guix@vodafonemail.de>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu bootloader grub)
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#:use-module (guix build union)
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#:use-module (guix records)
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#:use-module (guix store)
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#:use-module (guix utils)
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#:use-module (guix gexp)
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#:use-module (gnu artwork)
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#:use-module (gnu bootloader)
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#:use-module (gnu system uuid)
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#:use-module (gnu system file-systems)
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#:use-module (gnu system keyboard)
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#:use-module (gnu system locale)
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#:use-module (gnu packages bootloaders)
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#:autoload (gnu packages gtk) (guile-cairo guile-rsvg)
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#:autoload (gnu packages xorg) (xkeyboard-config)
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#:use-module (ice-9 match)
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#:use-module (ice-9 regex)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-2)
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#:export (grub-theme
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grub-theme?
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grub-theme-image
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grub-theme-resolution
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grub-theme-color-normal
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grub-theme-color-highlight
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grub-theme-gfxmode
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install-grub-efi-netboot
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grub-bootloader
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grub-efi-bootloader
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grub-efi-netboot-bootloader
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grub-mkrescue-bootloader
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grub-minimal-bootloader
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grub-configuration))
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;;; Commentary:
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;;;
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;;; Configuration of GNU GRUB.
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;;;
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;;; Code:
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(define* (normalize-file file mount-point store-directory-prefix)
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"Strip MOUNT-POINT and prepend STORE-DIRECTORY-PREFIX, if any, to FILE, a
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G-expression or other lowerable object denoting a file name."
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(define (strip-mount-point mount-point file)
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(if mount-point
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(if (string=? mount-point "/")
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file
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#~(let ((file #$file))
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(if (string-prefix? #$mount-point file)
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(substring #$file #$(string-length mount-point))
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file)))
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file))
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(define (prepend-store-directory-prefix store-directory-prefix file)
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(if store-directory-prefix
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#~(string-append #$store-directory-prefix #$file)
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file))
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(prepend-store-directory-prefix store-directory-prefix
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(strip-mount-point mount-point file)))
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(define-record-type* <grub-theme>
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;; Default theme contributed by Felipe López.
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grub-theme make-grub-theme
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grub-theme?
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(image grub-theme-image
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(default (file-append %artwork-repository
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"/grub/GuixSD-fully-black-4-3.svg")))
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(resolution grub-theme-resolution
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(default '(1024 . 768)))
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(color-normal grub-theme-color-normal
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(default '((fg . light-gray) (bg . black))))
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(color-highlight grub-theme-color-highlight
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(default '((fg . yellow) (bg . black))))
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(gfxmode grub-theme-gfxmode
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(default '("auto")))) ;list of string
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;;;
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;;; Background image & themes.
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;;;
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(define (bootloader-theme config)
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"Return user defined theme in CONFIG if defined or a default theme
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otherwise."
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(or (bootloader-configuration-theme config) (grub-theme)))
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(define* (image->png image #:key width height)
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"Build a PNG of HEIGHT x WIDTH from IMAGE if its file suffix is \".svg\".
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Otherwise the picture in IMAGE is just copied."
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(computed-file "grub-image.png"
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(with-imported-modules '((gnu build svg))
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(with-extensions (list guile-rsvg guile-cairo)
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#~(if (string-suffix? ".svg" #+image)
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(begin
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(use-modules (gnu build svg))
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(svg->png #+image #$output
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#:width #$width
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#:height #$height))
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(copy-file #+image #$output))))))
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(define* (grub-background-image config)
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"Return the GRUB background image defined in CONFIG or #f if none was found.
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If the suffix of the image file is \".svg\", then it is converted into a PNG
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file with the resolution provided in CONFIG."
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(let* ((theme (bootloader-theme config))
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(image (grub-theme-image theme)))
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(and image
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(match (grub-theme-resolution theme)
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(((? number? width) . (? number? height))
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(image->png image #:width width #:height height))
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(_ #f)))))
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(define (grub-locale-directory grub)
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"Generate a directory with the locales from GRUB."
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(define builder
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#~(begin
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(use-modules (ice-9 ftw))
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(let ((locale (string-append #$grub "/share/locale"))
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(out #$output))
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(mkdir out)
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(chdir out)
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(for-each (lambda (lang)
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(let ((file (string-append locale "/" lang
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"/LC_MESSAGES/grub.mo"))
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(dest (string-append lang ".mo")))
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(when (file-exists? file)
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(copy-file file dest))))
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(scandir locale)))))
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(computed-file "grub-locales" builder))
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(define* (eye-candy config store-device store-mount-point
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#:key store-directory-prefix port)
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"Return a gexp that writes to PORT (a port-valued gexp) the 'grub.cfg' part
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concerned with graphics mode, background images, colors, and all that.
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STORE-DEVICE designates the device holding the store, and STORE-MOUNT-POINT is
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its mount point; these are used to determine where the background image and
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fonts must be searched for. STORE-DIRECTORY-PREFIX is a directory prefix to
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prepend to any store file name."
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(define (setup-gfxterm config)
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(if (memq 'gfxterm (bootloader-configuration-terminal-outputs config))
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#~(format #f "
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if loadfont unicode; then
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set gfxmode=~a
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insmod all_video
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insmod gfxterm
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fi~%"
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#$(string-join
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(grub-theme-gfxmode (bootloader-theme config))
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";"))
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""))
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(define (theme-colors type)
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(let* ((theme (bootloader-theme config))
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(colors (type theme)))
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(string-append (symbol->string (assoc-ref colors 'fg)) "/"
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(symbol->string (assoc-ref colors 'bg)))))
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(define image
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(normalize-file (grub-background-image config)
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store-mount-point
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store-directory-prefix))
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(and image
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#~(format #$port "
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# Set 'root' to the partition that contains /gnu/store.
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~a
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~a
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~a
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insmod png
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if background_image ~a; then
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set color_normal=~a
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set color_highlight=~a
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else
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set menu_color_normal=cyan/blue
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set menu_color_highlight=white/blue
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fi~%"
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#$(grub-root-search store-device image)
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#$(setup-gfxterm config)
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#$(grub-setup-io config)
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#$image
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#$(theme-colors grub-theme-color-normal)
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#$(theme-colors grub-theme-color-highlight))))
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;;;
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;;; Configuration file.
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;;;
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(define* (keyboard-layout-file layout
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#:key
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(grub grub))
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"Process the X keyboard layout description LAYOUT, a <keyboard-layout> record,
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and return a file in the format for GRUB keymaps. LAYOUT must be present in
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the 'share/X11/xkb/symbols/' directory of 'xkeyboard-config'."
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(define builder
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(with-imported-modules '((guix build utils))
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#~(begin
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(use-modules (guix build utils))
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;; 'grub-kbdcomp' passes all its arguments but '-o' to 'ckbcomp'
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;; (from the 'console-setup' package).
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(invoke #+(file-append grub "/bin/grub-mklayout")
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"-i" #+(keyboard-layout->console-keymap layout)
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"-o" #$output))))
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(computed-file (string-append "grub-keymap."
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(string-map (match-lambda
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(#\, #\-)
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(chr chr))
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(keyboard-layout-name layout)))
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builder))
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(define (grub-setup-io config)
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"Return GRUB commands to configure the input / output interfaces. The result
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is a string that can be inserted in grub.cfg."
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(let* ((symbols->string (lambda (list)
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(string-join (map symbol->string list) " ")))
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(outputs (bootloader-configuration-terminal-outputs config))
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(inputs (bootloader-configuration-terminal-inputs config))
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(unit (bootloader-configuration-serial-unit config))
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(speed (bootloader-configuration-serial-speed config))
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;; Respectively, GRUB_TERMINAL_OUTPUT and GRUB_TERMINAL_INPUT,
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;; as documented in GRUB manual section "Simple Configuration
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;; Handling".
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(valid-outputs '(console serial serial_0 serial_1 serial_2 serial_3
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gfxterm vga_text mda_text morse spkmodem))
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(valid-inputs '(console serial serial_0 serial_1 serial_2 serial_3
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at_keyboard usb_keyboard))
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(io (string-append
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;; UNIT and SPEED are arguments to the same GRUB command
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;; ("serial"), so we process them together.
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(if (or unit speed)
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(string-append
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"serial"
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(if unit
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;; COM ports 1 through 4
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(if (and (exact-integer? unit) (<= unit 3) (>= unit 0))
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(string-append " --unit=" (number->string unit))
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#f)
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"")
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(if speed
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(if (exact-integer? speed)
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(string-append " --speed=" (number->string speed))
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#f)
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"")
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"\n")
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"")
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(if (null? inputs)
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""
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(string-append
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"terminal_input "
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(symbols->string
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(map
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(lambda (input)
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(if (memq input valid-inputs) input #f)) inputs))
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"\n"))
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"terminal_output "
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(symbols->string
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(map
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(lambda (output)
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(if (memq output valid-outputs) output #f)) outputs)))))
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(format #f "~a" io)))
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(define (grub-root-search device file)
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"Return the GRUB 'search' command to look for DEVICE, which contains FILE,
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a gexp. The result is a gexp that can be inserted in the grub.cfg-generation
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code."
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;; Usually FILE is a file name gexp like "/gnu/store/…-linux/vmlinuz", but
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;; it can also be something like "(hd0,msdos1)/vmlinuz" in the case of
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;; custom menu entries. In the latter case, don't emit a 'search' command.
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(if (and (string? file) (not (string-prefix? "/" file)))
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""
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(match device
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;; Preferably refer to DEVICE by its UUID or label. This is more
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;; efficient and less ambiguous, see <http://bugs.gnu.org/22281>.
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((? uuid? uuid)
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(format #f "search --fs-uuid --set ~a"
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(uuid->string device)))
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((? file-system-label? label)
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(format #f "search --label --set ~a"
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(file-system-label->string label)))
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((? (lambda (device)
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(and (string? device) (string-contains device ":/"))) nfs-uri)
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;; If the device is an NFS share, then we assume that the expected
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;; file on that device (e.g. the GRUB background image or the kernel)
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;; has to be loaded over the network. Otherwise we would need an
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;; additional device information for some local disk to look for that
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;; file, which we do not have.
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;;
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;; We explicitly set "root=(tftp)" here even though if grub.cfg
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;; had been loaded via TFTP, Grub would have set "root=(tftp)"
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;; automatically anyway. The reason is if you have a system that
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;; used to be on NFS but now is local, root would be set to local
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;; disk. If you then selected an older system generation that is
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;; supposed to boot from network in the Grub boot menu, Grub still
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;; wouldn't load those files from network otherwise.
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;;
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;; TFTP is preferred to HTTP because it is used more widely and
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;; specified in standards more widely--especially BOOTP/DHCPv4
|
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;; defines a TFTP server for DHCP option 66, but not HTTP.
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;;
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;; Note: DHCPv6 specifies option 59 to contain a boot-file-url,
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;; which can contain a HTTP or TFTP URL.
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;;
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||
;; Note: It is assumed that the file paths are of a similar
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;; setup on both the TFTP server and the NFS server (it is
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;; not possible to search for files on TFTP).
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;;
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||
;; TODO: Allow HTTP.
|
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"set root=(tftp)")
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((or #f (? string?))
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#~(format #f "search --file --set ~a" #$file)))))
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|
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(define* (grub-configuration-file config entries
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#:key
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(locale #f)
|
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(system (%current-system))
|
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(old-entries '())
|
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(store-crypto-devices '())
|
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store-directory-prefix)
|
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"Return the GRUB configuration file corresponding to CONFIG, a
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<bootloader-configuration> object, and where the store is available at
|
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STORE-FS, a <file-system> object. OLD-ENTRIES is taken to be a list of menu
|
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entries corresponding to old generations of the system.
|
||
STORE-CRYPTO-DEVICES contain the UUIDs of the encrypted units that must
|
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be unlocked to access the store contents.
|
||
STORE-DIRECTORY-PREFIX may be used to specify a store prefix, as is required
|
||
when booting a root file system on a Btrfs subvolume."
|
||
(define all-entries
|
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(append entries (bootloader-configuration-menu-entries config)))
|
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(define (menu-entry->gexp entry)
|
||
(let ((label (menu-entry-label entry))
|
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(linux (menu-entry-linux entry))
|
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(device (menu-entry-device entry))
|
||
(device-mount-point (menu-entry-device-mount-point entry)))
|
||
(if linux
|
||
(let ((arguments (menu-entry-linux-arguments entry))
|
||
(linux (normalize-file linux
|
||
device-mount-point
|
||
store-directory-prefix))
|
||
(initrd (normalize-file (menu-entry-initrd entry)
|
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device-mount-point
|
||
store-directory-prefix)))
|
||
;; Here DEVICE is the store and DEVICE-MOUNT-POINT is its mount point.
|
||
;; Use the right file names for LINUX and INITRD in case
|
||
;; DEVICE-MOUNT-POINT is not "/", meaning that the store is on a
|
||
;; separate partition.
|
||
|
||
;; When BTRFS-SUBVOLUME-FILE-NAME is defined, prepend it the linux and
|
||
;; initrd paths, to allow booting from a Btrfs subvolume.
|
||
#~(format port "menuentry ~s {
|
||
~a
|
||
linux ~a ~a
|
||
initrd ~a
|
||
}~%"
|
||
#$label
|
||
#$(grub-root-search device linux)
|
||
#$linux (string-join (list #$@arguments))
|
||
#$initrd))
|
||
(let ((kernel (menu-entry-multiboot-kernel entry))
|
||
(arguments (menu-entry-multiboot-arguments entry))
|
||
(modules (menu-entry-multiboot-modules entry))
|
||
(root-index 1)) ; XXX EFI will need root-index 2
|
||
#~(format port "
|
||
menuentry ~s {
|
||
multiboot ~a root=device:hd0s~a~a~a
|
||
}~%"
|
||
#$label
|
||
#$kernel
|
||
#$root-index (string-join (list #$@arguments) " " 'prefix)
|
||
(string-join (map string-join '#$modules)
|
||
"\n module " 'prefix))))))
|
||
|
||
(define (crypto-devices)
|
||
(define (crypto-device->cryptomount dev)
|
||
(if (uuid? dev)
|
||
#~(format port "cryptomount -u ~a~%"
|
||
;; cryptomount only accepts UUID without the hypen.
|
||
#$(string-delete #\- (uuid->string dev)))
|
||
;; Other type of devices aren't implemented.
|
||
#~()))
|
||
(let ((devices (map crypto-device->cryptomount store-crypto-devices))
|
||
(modules #~(format port "insmod luks~%insmod luks2~%")))
|
||
(if (null? devices)
|
||
devices
|
||
(cons modules devices))))
|
||
|
||
(define (sugar)
|
||
(let* ((entry (first all-entries))
|
||
(device (menu-entry-device entry))
|
||
(mount-point (menu-entry-device-mount-point entry)))
|
||
(eye-candy config
|
||
device
|
||
mount-point
|
||
#:store-directory-prefix store-directory-prefix
|
||
#:port #~port)))
|
||
|
||
(define locale-config
|
||
(let* ((entry (first all-entries))
|
||
(device (menu-entry-device entry))
|
||
(mount-point (menu-entry-device-mount-point entry))
|
||
(bootloader (bootloader-configuration-bootloader config))
|
||
(grub (bootloader-package bootloader)))
|
||
#~(let ((locale #$(and locale
|
||
(locale-definition-source
|
||
(locale-name->definition locale))))
|
||
(locales #$(and locale
|
||
(normalize-file (grub-locale-directory grub)
|
||
mount-point
|
||
store-directory-prefix))))
|
||
(when locale
|
||
(format port "\
|
||
# Localization configuration.
|
||
~asearch --file --set ~a/en@quot.mo
|
||
set locale_dir=~a
|
||
set lang=~a~%"
|
||
;; Skip the search if there is an image, as it has already
|
||
;; been performed by eye-candy and traversing the store is
|
||
;; an expensive operation.
|
||
#$(if (grub-theme-image (bootloader-theme config))
|
||
"# "
|
||
"")
|
||
locales
|
||
locales
|
||
locale)))))
|
||
|
||
(define keyboard-layout-config
|
||
(let* ((layout (bootloader-configuration-keyboard-layout config))
|
||
(grub (bootloader-package
|
||
(bootloader-configuration-bootloader config)))
|
||
(keymap* (and layout
|
||
(keyboard-layout-file layout #:grub grub)))
|
||
(entry (first all-entries))
|
||
(device (menu-entry-device entry))
|
||
(mount-point (menu-entry-device-mount-point entry))
|
||
(keymap (and keymap*
|
||
(normalize-file keymap* mount-point
|
||
store-directory-prefix))))
|
||
#~(when #$keymap
|
||
(format port "\
|
||
insmod keylayouts
|
||
keymap ~a~%" #$keymap))))
|
||
|
||
(define builder
|
||
#~(call-with-output-file #$output
|
||
(lambda (port)
|
||
(format port
|
||
"# This file was generated from your Guix configuration. Any changes
|
||
# will be lost upon reconfiguration.
|
||
")
|
||
#$@(crypto-devices)
|
||
#$(sugar)
|
||
#$locale-config
|
||
#$keyboard-layout-config
|
||
(format port "
|
||
set default=~a
|
||
set timeout=~a~%"
|
||
#$(bootloader-configuration-default-entry config)
|
||
#$(bootloader-configuration-timeout config))
|
||
#$@(map menu-entry->gexp all-entries)
|
||
|
||
#$@(if (pair? old-entries)
|
||
#~((format port "
|
||
submenu \"GNU system, old configurations...\" {~%")
|
||
#$@(map menu-entry->gexp old-entries)
|
||
(format port "}~%"))
|
||
#~())
|
||
(format port "
|
||
if [ \"${grub_platform}\" == efi ]; then
|
||
menuentry \"Firmware setup\" {
|
||
fwsetup
|
||
}
|
||
fi~%"))))
|
||
|
||
;; Since this file is rather unique, there's no point in trying to
|
||
;; substitute it.
|
||
(computed-file "grub.cfg" builder
|
||
#:options '(#:local-build? #t
|
||
#:substitutable? #f)))
|
||
|
||
|
||
|
||
;;;
|
||
;;; Install procedures.
|
||
;;;
|
||
|
||
(define install-grub
|
||
#~(lambda (bootloader device mount-point)
|
||
(let ((grub (string-append bootloader "/sbin/grub-install"))
|
||
(install-dir (string-append mount-point "/boot")))
|
||
;; Install GRUB on DEVICE which is mounted at MOUNT-POINT. If DEVICE
|
||
;; is #f, then we populate the disk-image rooted at MOUNT-POINT.
|
||
(if device
|
||
(begin
|
||
;; Tell 'grub-install' that there might be a LUKS-encrypted
|
||
;; /boot or root partition.
|
||
(setenv "GRUB_ENABLE_CRYPTODISK" "y")
|
||
|
||
;; Hide potentially confusing messages from the user, such as
|
||
;; "Installing for i386-pc platform."
|
||
(invoke/quiet grub "--no-floppy" "--target=i386-pc"
|
||
"--boot-directory" install-dir
|
||
device))
|
||
;; When creating a disk-image, only install a font and GRUB modules.
|
||
(let* ((fonts (string-append install-dir "/grub/fonts")))
|
||
(mkdir-p fonts)
|
||
(copy-file (string-append bootloader "/share/grub/unicode.pf2")
|
||
(string-append fonts "/unicode.pf2"))
|
||
(copy-recursively (string-append bootloader "/lib/")
|
||
install-dir))))))
|
||
|
||
(define install-grub-disk-image
|
||
#~(lambda (bootloader root-index image)
|
||
;; Install GRUB on the given IMAGE. The root partition index is
|
||
;; ROOT-INDEX.
|
||
(let ((grub-mkimage
|
||
(string-append bootloader "/bin/grub-mkimage"))
|
||
(modules '("biosdisk" "part_msdos" "fat" "ext2"))
|
||
(grub-bios-setup
|
||
(string-append bootloader "/sbin/grub-bios-setup"))
|
||
(root-device (format #f "hd0,msdos~a" root-index))
|
||
(boot-img (string-append bootloader "/lib/grub/i386-pc/boot.img"))
|
||
(device-map "device.map"))
|
||
|
||
;; Create a minimal, standalone GRUB image that will be written
|
||
;; directly in the MBR-GAP (space between the end of the MBR and the
|
||
;; first partition).
|
||
(apply invoke grub-mkimage
|
||
"-O" "i386-pc"
|
||
"-o" "core.img"
|
||
"-p" (format #f "(~a)/boot/grub" root-device)
|
||
modules)
|
||
|
||
;; Create a device mapping file.
|
||
(call-with-output-file device-map
|
||
(lambda (port)
|
||
(format port "(hd0) ~a~%" image)))
|
||
|
||
;; Copy the default boot.img, that will be written on the MBR sector
|
||
;; by GRUB-BIOS-SETUP.
|
||
(copy-file boot-img "boot.img")
|
||
|
||
;; Install both the "boot.img" and the "core.img" files on the given
|
||
;; IMAGE. On boot, the MBR sector will execute the minimal GRUB
|
||
;; written in the MBR-GAP. GRUB configuration and missing modules will
|
||
;; be read from ROOT-DEVICE.
|
||
(invoke grub-bios-setup
|
||
"-m" device-map
|
||
"-r" root-device
|
||
"-d" "."
|
||
image))))
|
||
|
||
(define install-grub-efi
|
||
#~(lambda (bootloader efi-dir mount-point)
|
||
;; There is nothing useful to do when called in the context of a disk
|
||
;; image generation.
|
||
(when efi-dir
|
||
;; Install GRUB onto the EFI partition mounted at EFI-DIR, for the
|
||
;; system whose root is mounted at MOUNT-POINT.
|
||
(let ((grub-install (string-append bootloader "/sbin/grub-install"))
|
||
(install-dir (string-append mount-point "/boot"))
|
||
;; When installing Guix, it's common to mount EFI-DIR below
|
||
;; MOUNT-POINT rather than /boot/efi on the live image.
|
||
(target-esp (if (file-exists? (string-append mount-point efi-dir))
|
||
(string-append mount-point efi-dir)
|
||
efi-dir)))
|
||
;; Tell 'grub-install' that there might be a LUKS-encrypted /boot or
|
||
;; root partition.
|
||
(setenv "GRUB_ENABLE_CRYPTODISK" "y")
|
||
(invoke/quiet grub-install "--boot-directory" install-dir
|
||
"--bootloader-id=Guix"
|
||
"--efi-directory" target-esp)))))
|
||
|
||
(define (install-grub-efi-netboot subdir)
|
||
"Define a grub-efi-netboot bootloader installer for installation in SUBDIR,
|
||
which is usually efi/Guix or efi/boot."
|
||
(let* ((system (string-split (nix-system->gnu-triplet
|
||
(or (%current-target-system)
|
||
(%current-system)))
|
||
#\-))
|
||
(arch (first system))
|
||
(boot-efi-link (match system
|
||
;; These are the supportend systems and the names
|
||
;; defined by the UEFI standard for removable media.
|
||
(("i686" _ ...) "/bootia32.efi")
|
||
(("x86_64" _ ...) "/bootx64.efi")
|
||
(("arm" _ ...) "/bootarm.efi")
|
||
(("aarch64" _ ...) "/bootaa64.efi")
|
||
(("riscv" _ ...) "/bootriscv32.efi")
|
||
(("riscv64" _ ...) "/bootriscv64.efi")
|
||
;; Other systems are not supported, although defined.
|
||
;; (("riscv128" _ ...) "/bootriscv128.efi")
|
||
;; (("ia64" _ ...) "/bootia64.efi")
|
||
((_ ...) #f)))
|
||
(core-efi (string-append
|
||
;; This is the arch dependent file name of GRUB, e.g.
|
||
;; i368-efi/core.efi or arm64-efi/core.efi.
|
||
(match arch
|
||
("i686" "i386")
|
||
("aarch64" "arm64")
|
||
("riscv" "riscv32")
|
||
(_ arch))
|
||
"-efi/core.efi")))
|
||
(with-imported-modules
|
||
'((guix build union))
|
||
#~(lambda (bootloader target mount-point)
|
||
"Install the BOOTLOADER, which must be the package grub, as e.g.
|
||
bootx64.efi or bootaa64.efi into SUBDIR, which is usually efi/Guix or efi/boot,
|
||
below the directory TARGET for the system whose root is mounted at MOUNT-POINT.
|
||
|
||
MOUNT-POINT is the last argument in 'guix system init /etc/config.scm mnt/point'
|
||
or '/' for other 'guix system' commands.
|
||
|
||
Where TARGET comes from the targets argument given to the
|
||
bootloader-configuration in:
|
||
|
||
(operating-system
|
||
(bootloader (bootloader-configuration
|
||
(targets '(\"/boot\"))
|
||
…))
|
||
…)
|
||
|
||
TARGET is required to be an absolute directory name, usually mounted via NFS,
|
||
and finally needs to be provided by a TFTP server as the TFTP root directory.
|
||
|
||
GRUB will load tftp://server/SUBDIR/grub.cfg and this file will instruct it to
|
||
load more files from the store like tftp://server/gnu/store/…-linux…/Image.
|
||
|
||
To make this possible two symlinks will be created. The first symlink points
|
||
relatively form MOUNT-POINT/TARGET/SUBDIR/grub.cfg to
|
||
MOUNT-POINT/boot/grub/grub.cfg, and the second symlink points relatively from
|
||
MOUNT-POINT/TARGET/%store-prefix to MOUNT-POINT/%store-prefix.
|
||
|
||
It is important to note that these symlinks need to be relative, as the absolute
|
||
paths on the TFTP server side are unknown.
|
||
|
||
It is also important to note that both symlinks will point outside the TFTP root
|
||
directory and that the TARGET/%store-prefix symlink makes the whole store
|
||
accessible via TFTP. Possibly the TFTP server must be configured
|
||
to allow accesses outside its TFTP root directory. This may need to be
|
||
considered for security aspects."
|
||
(use-modules ((guix build union) #:select (symlink-relative)))
|
||
(let* ((net-dir (string-append mount-point target "/"))
|
||
(sub-dir (string-append net-dir #$subdir "/"))
|
||
(store (string-append mount-point (%store-prefix)))
|
||
(store-link (string-append net-dir (%store-prefix)))
|
||
(grub-cfg (string-append mount-point "/boot/grub/grub.cfg"))
|
||
(grub-cfg-link (string-append sub-dir (basename grub-cfg)))
|
||
(boot-efi-link (string-append sub-dir #$boot-efi-link)))
|
||
;; Prepare the symlink to the store.
|
||
(mkdir-p (dirname store-link))
|
||
(false-if-exception (delete-file store-link))
|
||
(symlink-relative store store-link)
|
||
;; Prepare the symlink to the grub.cfg, which points into the store.
|
||
(mkdir-p (dirname grub-cfg-link))
|
||
(false-if-exception (delete-file grub-cfg-link))
|
||
(symlink-relative grub-cfg grub-cfg-link)
|
||
;; Install GRUB, which refers to the grub.cfg, with support for
|
||
;; encrypted partitions,
|
||
(setenv "GRUB_ENABLE_CRYPTODISK" "y")
|
||
(invoke/quiet (string-append bootloader "/bin/grub-mknetdir")
|
||
(string-append "--net-directory=" net-dir)
|
||
(string-append "--subdir=" #$subdir))
|
||
;; Prepare the bootloader symlink, which points to core.efi of GRUB.
|
||
(false-if-exception (delete-file boot-efi-link))
|
||
(symlink #$core-efi boot-efi-link))))))
|
||
|
||
|
||
|
||
;;;
|
||
;;; Bootloader definitions.
|
||
;;;
|
||
;;; For all these grub-bootloader variables the path to /boot/grub/grub.cfg
|
||
;;; is fixed. Inheriting and overwriting the field 'configuration-file' will
|
||
;;; break 'guix system delete-generations', 'guix system switch-generation',
|
||
;;; and 'guix system roll-back'.
|
||
|
||
(define grub-bootloader
|
||
(bootloader
|
||
(name 'grub)
|
||
(package grub)
|
||
(installer install-grub)
|
||
(disk-image-installer install-grub-disk-image)
|
||
(configuration-file "/boot/grub/grub.cfg")
|
||
(configuration-file-generator grub-configuration-file)))
|
||
|
||
(define grub-minimal-bootloader
|
||
(bootloader
|
||
(inherit grub-bootloader)
|
||
(package grub-minimal)))
|
||
|
||
(define grub-efi-bootloader
|
||
(bootloader
|
||
(inherit grub-bootloader)
|
||
(installer install-grub-efi)
|
||
(disk-image-installer #f)
|
||
(name 'grub-efi)
|
||
(package grub-efi)))
|
||
|
||
(define grub-efi-netboot-bootloader
|
||
(bootloader
|
||
(inherit grub-efi-bootloader)
|
||
(name 'grub-efi-netboot-bootloader)
|
||
(installer (install-grub-efi-netboot "efi/Guix"))))
|
||
|
||
(define grub-mkrescue-bootloader
|
||
(bootloader
|
||
(inherit grub-efi-bootloader)
|
||
(package grub-hybrid)))
|
||
|
||
|
||
;;;
|
||
;;; Compatibility macros.
|
||
;;;
|
||
|
||
(define-syntax grub-configuration
|
||
(syntax-rules (grub)
|
||
((_ (grub package) fields ...)
|
||
(if (eq? package grub)
|
||
(bootloader-configuration
|
||
(bootloader grub-bootloader)
|
||
fields ...)
|
||
(bootloader-configuration
|
||
(bootloader grub-efi-bootloader)
|
||
fields ...)))
|
||
((_ fields ...)
|
||
(bootloader-configuration
|
||
(bootloader grub-bootloader)
|
||
fields ...))))
|
||
|
||
;;; grub.scm ends here
|