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| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 David Craven <david@craven.ch>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu system bootloader)
#:use-module (gnu system)
#:use-module (gnu system grub)
#:use-module (guix gexp)
#:use-module (guix packages)
#:use-module (guix records)
#:use-module (ice-9 match)
#:export (bootloader-configuration
bootloader-configuration?
bootloader-configuration-bootloader
bootloader-configuration-device
bootloader-configuration-menu-entries
bootloader-configuration-default-entry
bootloader-configuration-timeout
bootloader-configuration-file-generator
bootloader-configuration-file-name
bootloader-configuration-installer
bootloader-configuration-additional-configuration
extlinux-configuration
grub-configuration
grub-efi-configuration
syslinux-configuration
install-grub
install-syslinux))
;;; Commentary:
;;;
;;; Generic configuration for bootloaders.
;;;
;;; Code:
(define-record-type* <bootloader-configuration>
bootloader-configuration make-bootloader-configuration
bootloader-configuration?
(bootloader bootloader-configuration-bootloader ; package
(default #f))
(device bootloader-configuration-device ; string
(default #f))
(menu-entries bootloader-configuration-menu-entries ; list of <boot-parameters>
(default '()))
(default-entry bootloader-configuration-default-entry ; integer
(default 0))
(timeout bootloader-configuration-timeout ; integer
(default 5))
(configuration-file-name bootloader-configuration-file-name
(default #f))
(configuration-file-generator bootloader-configuration-file-generator ; procedure
(default #f))
(installer bootloader-configuration-installer ; procedure
(default #f))
(additional-configuration bootloader-configuration-additional-configuration ; record
(default #f)))
\f
;;;
;;; Extlinux configuration file.
;;;
(define* (extlinux-configuration-file config entries
#:key
(system (%current-system))
(old-entries '()))
"Return the U-Boot configuration file corresponding to CONFIG, a
<u-boot-configuration> object, and where the store is available at STORE-FS, a
<file-system> object. OLD-ENTRIES is taken to be a list of menu entries
corresponding to old generations of the system."
(define all-entries
(append entries (bootloader-configuration-menu-entries config)))
(define (boot-parameters->gexp params)
(let ((label (boot-parameters-label params))
(kernel (boot-parameters-kernel params))
(kernel-arguments (boot-parameters-kernel-arguments params))
(initrd (boot-parameters-initrd params)))
#~(format port "LABEL ~a
MENU LABEL ~a
KERNEL ~a
FDTDIR ~a/lib/dtbs
INITRD ~a
APPEND ~a
~%"
#$label #$label
#$kernel #$kernel #$initrd
(string-join (list #$@kernel-arguments)))))
(define builder
#~(call-with-output-file #$output
(lambda (port)
(let ((timeout #$(bootloader-configuration-timeout config)))
(format port "
UI menu.c32
PROMPT ~a
TIMEOUT ~a~%"
(if (> timeout 0) 1 0)
;; timeout is expressed in 1/10s of seconds.
(* 10 timeout))
#$@(map boot-parameters->gexp all-entries)
#$@(if (pair? old-entries)
#~((format port "~%")
#$@(map boot-parameters->gexp old-entries)
(format port "~%"))
#~())))))
(gexp->derivation "extlinux.conf" builder))
\f
;;;
;;; Bootloader configurations.
;;;
(define* (extlinux-configuration #:optional (config (bootloader-configuration)))
(bootloader-configuration
(inherit config)
(configuration-file-name "/boot/extlinux/extlinux.conf")
(configuration-file-generator extlinux-configuration-file)))
(define* (grub-configuration #:optional (config (bootloader-configuration)))
(bootloader-configuration
(inherit config)
(bootloader (@ (gnu packages bootloaders) grub))
(configuration-file-name "/boot/grub/grub.cfg")
(configuration-file-generator grub-configuration-file)
(installer install-grub)
(additional-configuration
(let ((additional-config (bootloader-configuration-additional-configuration config)))
(if additional-config additional-config %default-theme)))))
(define* (grub-efi-configuration #:optional (config (bootloader-configuration)))
(bootloader-configuration
(inherit (grub-configuration config))
(bootloader (@ (gnu packages bootloaders) grub-efi))))
(define* (syslinux-configuration #:optional (config (bootloader-configuration)))
(bootloader-configuration
(inherit (extlinux-configuration config))
(bootloader (@ (gnu packages bootloaders) syslinux))
(installer install-syslinux)))
\f
;;;
;;; Bootloader install procedures.
;;;
(define dd
#~(lambda (bs count if of)
(zero? (system* "dd"
(string-append "bs=" (number->string bs))
(string-append "count=" (number->string count))
(string-append "if=" if)
(string-append "of=" of)))))
(define install-grub
#~(lambda (bootloader device mount-point)
;; Install GRUB on DEVICE which is mounted at MOUNT-POINT.
(let ((grub (string-append bootloader "/sbin/grub-install"))
(install-dir (string-append mount-point "/boot")))
;; Tell 'grub-install' that there might be a LUKS-encrypted /boot or
;; root partition.
(setenv "GRUB_ENABLE_CRYPTODISK" "y")
(unless (zero? (system* grub "--no-floppy"
"--boot-directory" install-dir
device))
(error "failed to install GRUB")))))
(define install-syslinux
#~(lambda (bootloader device mount-point)
(let ((extlinux (string-append bootloader "/sbin/extlinux"))
(install-dir (string-append mount-point "/boot/extlinux"))
(syslinux-dir (string-append bootloader "/share/syslinux")))
(mkdir-p install-dir)
(for-each (lambda (file)
(copy-file file
(string-append install-dir "/" (basename file))))
(find-files syslinux-dir "\\.c32$"))
(unless (and (zero? (system* extlinux "--install" install-dir))
(#$dd 440 1 (string-append syslinux-dir "/mbr.bin") device))
(error "failed to install SYSLINUX")))))
;;; bootloader.scm ends here
|