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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 David Craven <david@craven.ch>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;;
;;; 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 bootloader extlinux)
#:use-module (gnu bootloader)
#:use-module (gnu system)
#:use-module (gnu packages bootloaders)
#:use-module (guix gexp)
#:use-module (guix monads)
#:use-module (guix records)
#:use-module (guix utils)
#:export (extlinux-bootloader
extlinux-bootloader-gpt))
(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 (map menu-entry->boot-parameters
(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 "# This file was generated from your GuixSD configuration. Any changes
# will be lost upon reconfiguration.
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 "~%")
#$@(map boot-parameters->gexp old-entries)
(format port "~%"))
#~())))))
(gexp->derivation "extlinux.conf" builder))
;;;
;;; Install procedures.
;;;
(define dd
#~(lambda (bs count if of)
(zero? (system* "dd"
(string-append "bs=" (number->string bs))
(string-append "count=" (number->string count))
(string-append "if=" if)
(string-append "of=" of)))))
(define (install-extlinux mbr)
#~(lambda (bootloader device mount-point)
(let ((extlinux (string-append bootloader "/sbin/extlinux"))
(install-dir (string-append mount-point "/boot/extlinux"))
(syslinux-dir (string-append bootloader "/share/syslinux")))
(for-each (lambda (file)
(install-file file install-dir))
(find-files syslinux-dir "\\.c32$"))
(unless (and (zero? (system* extlinux "--install" install-dir))
(#$dd 440 1 (string-append syslinux-dir "/" #$mbr) device))
(error "failed to install SYSLINUX")))))
(define install-extlinux-mbr
(install-extlinux "mbr.bin"))
(define install-extlinux-gpt
(install-extlinux "gptmbr.bin"))
;;;
;;; Bootloader definitions.
;;;
(define extlinux-bootloader
(bootloader
(name 'extlinux)
(package syslinux)
(installer install-extlinux-mbr)
(configuration-file "/boot/extlinux/extlinux.conf")
(configuration-file-generator extlinux-configuration-file)))
(define extlinux-bootloader-gpt
(bootloader
(inherit extlinux-bootloader)
(installer install-extlinux-gpt)))
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