aboutsummaryrefslogtreecommitdiff
path: root/gnu/bootloader.scm
blob: 668caa7fc3fe1370f3f4cf78e572f278c2d8e4f9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 David Craven <david@craven.ch>
;;; Copyright © 2017, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
;;;
;;; 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)
  #:use-module (guix discovery)
  #:use-module (guix records)
  #:use-module (guix ui)
  #:use-module (srfi srfi-1)
  #:use-module (ice-9 match)
  #:export (menu-entry
            menu-entry?
            menu-entry-label
            menu-entry-device
            menu-entry-linux
            menu-entry-linux-arguments
            menu-entry-initrd
            menu-entry-device-mount-point

            menu-entry->sexp
            sexp->menu-entry

            bootloader
            bootloader?
            bootloader-name
            bootloader-package
            bootloader-installer
            bootloader-disk-image-installer
            bootloader-configuration-file
            bootloader-configuration-file-generator

            bootloader-configuration
            bootloader-configuration?
            bootloader-configuration-bootloader
            bootloader-configuration-target
            bootloader-configuration-menu-entries
            bootloader-configuration-default-entry
            bootloader-configuration-timeout
            bootloader-configuration-keyboard-layout
            bootloader-configuration-theme
            bootloader-configuration-terminal-outputs
            bootloader-configuration-terminal-inputs
            bootloader-configuration-serial-unit
            bootloader-configuration-serial-speed
            bootloader-configuration-additional-configuration

            %bootloaders
            lookup-bootloader-by-name))


;;;
;;; Menu-entry record.
;;;

(define-record-type* <menu-entry>
  menu-entry make-menu-entry
  menu-entry?
  (label           menu-entry-label)
  (device          menu-entry-device       ; file system uuid, label, or #f
                   (default #f))
  (device-mount-point menu-entry-device-mount-point
                   (default #f))
  (linux           menu-entry-linux)
  (linux-arguments menu-entry-linux-arguments
                   (default '()))          ; list of string-valued gexps
  (initrd          menu-entry-initrd))     ; file name of the initrd as a gexp

(define (menu-entry->sexp entry)
  "Return ENTRY serialized as an sexp."
  (match entry
    (($ <menu-entry> label device mount-point linux linux-arguments initrd)
     `(menu-entry (version 0)
                  (label ,label)
                  (device ,device)
                  (device-mount-point ,mount-point)
                  (linux ,linux)
                  (linux-arguments ,linux-arguments)
                  (initrd ,initrd)))))

(define (sexp->menu-entry sexp)
  "Turn SEXP, an sexp as returned by 'menu-entry->sexp', into a <menu-entry>
record."
  (match sexp
    (('menu-entry ('version 0)
                  ('label label) ('device device)
                  ('device-mount-point mount-point)
                  ('linux linux) ('linux-arguments linux-arguments)
                  ('initrd initrd) _ ...)
     (menu-entry
      (label label)
      (device device)
      (device-mount-point mount-point)
      (linux linux)
      (linux-arguments linux-arguments)
      (initrd initrd)))))


;;;
;;; Bootloader record.
;;;

;; The <bootloader> record contains fields expressing how the bootloader
;; should be installed. Every bootloader in gnu/bootloader/ directory
;; has to be described by this record.

(define-record-type* <bootloader>
  bootloader make-bootloader
  bootloader?
  (name                            bootloader-name)
  (package                         bootloader-package)
  (installer                       bootloader-installer)
  (disk-image-installer            bootloader-disk-image-installer
                                   (default #f))
  (configuration-file              bootloader-configuration-file)
  (configuration-file-generator    bootloader-configuration-file-generator))


;;;
;;; Bootloader configuration record.
;;;

;; The <bootloader-configuration> record contains bootloader independant
;; configuration used to fill bootloader configuration file.

(define-record-type* <bootloader-configuration>
  bootloader-configuration make-bootloader-configuration
  bootloader-configuration?
  (bootloader         bootloader-configuration-bootloader) ;<bootloader>
  (target             bootloader-configuration-target      ;string
                      (default #f))
  (menu-entries       bootloader-configuration-menu-entries ;list of <menu-entry>
                      (default '()))
  (default-entry      bootloader-configuration-default-entry ;integer
                      (default 0))
  (timeout            bootloader-configuration-timeout ;seconds as integer
                      (default 5))
  (keyboard-layout    bootloader-configuration-keyboard-layout ;<keyboard-layout> | #f
                      (default #f))
  (theme              bootloader-configuration-theme ;bootloader-specific theme
                      (default #f))
  (terminal-outputs   bootloader-configuration-terminal-outputs ;list of symbols
                      (default '(gfxterm)))
  (terminal-inputs    bootloader-configuration-terminal-inputs ;list of symbols
                      (default '()))
  (serial-unit        bootloader-configuration-serial-unit ;integer | #f
                      (default #f))
  (serial-speed       bootloader-configuration-serial-speed ;integer | #f
                      (default #f)))


;;;
;;; Bootloaders.
;;;

(define (bootloader-modules)
  "Return the list of bootloader modules."
  (all-modules (map (lambda (entry)
                      `(,entry . "gnu/bootloader"))
                    %load-path)
               #:warn warn-about-load-error))

(define %bootloaders
  ;; The list of publically-known bootloaders.
  (delay (fold-module-public-variables (lambda (obj result)
                                         (if (bootloader? obj)
                                             (cons obj result)
                                             result))
                                       '()
                                       (bootloader-modules))))

(define (lookup-bootloader-by-name name)
  "Return the bootloader called NAME."
  (or (find (lambda (bootloader)
              (eq? name (bootloader-name bootloader)))
            (force %bootloaders))
      (leave (G_ "~a: no such bootloader~%") name)))