mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-26 22:38:07 -05:00
f8fd115717
* gnu/build/bootloader.scm (install-efi): New procedure copied from (gnu build vm). (install-efi-loader): New exported procedure, wrapping install-efi. * gnu/build/vm.scm (initialize-hard-disk): Adapt to use install-efi-loader.
92 lines
3.8 KiB
Scheme
92 lines
3.8 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
|
||
;;; 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 build bootloader)
|
||
#:use-module (guix build utils)
|
||
#:use-module (guix utils)
|
||
#:use-module (ice-9 binary-ports)
|
||
#:use-module (ice-9 format)
|
||
#:export (write-file-on-device
|
||
install-efi-loader))
|
||
|
||
|
||
;;;
|
||
;;; Writing utils.
|
||
;;;
|
||
|
||
(define (write-file-on-device file size device offset)
|
||
"Write SIZE bytes from FILE to DEVICE starting at OFFSET."
|
||
(call-with-input-file file
|
||
(lambda (input)
|
||
(let ((bv (get-bytevector-n input size)))
|
||
(call-with-output-file device
|
||
(lambda (output)
|
||
(seek output offset SEEK_SET)
|
||
(put-bytevector output bv))
|
||
#:binary #t)))))
|
||
|
||
|
||
;;;
|
||
;;; EFI bootloader.
|
||
;;;
|
||
|
||
(define (install-efi grub grub-config esp)
|
||
"Write a self-contained GRUB EFI loader to the mounted ESP using GRUB-CONFIG."
|
||
(let* ((system %host-type)
|
||
;; Hard code the output location to a well-known path recognized by
|
||
;; compliant firmware. See "3.5.1.1 Removable Media Boot Behaviour":
|
||
;; http://www.uefi.org/sites/default/files/resources/UEFI%20Spec%202_6.pdf
|
||
(grub-mkstandalone (string-append grub "/bin/grub-mkstandalone"))
|
||
(efi-directory (string-append esp "/EFI/BOOT"))
|
||
;; Map grub target names to boot file names.
|
||
(efi-targets (cond ((string-prefix? "x86_64" system)
|
||
'("x86_64-efi" . "BOOTX64.EFI"))
|
||
((string-prefix? "i686" system)
|
||
'("i386-efi" . "BOOTIA32.EFI"))
|
||
((string-prefix? "armhf" system)
|
||
'("arm-efi" . "BOOTARM.EFI"))
|
||
((string-prefix? "aarch64" system)
|
||
'("arm64-efi" . "BOOTAA64.EFI")))))
|
||
;; grub-mkstandalone requires a TMPDIR to prepare the firmware image.
|
||
(setenv "TMPDIR" esp)
|
||
|
||
(mkdir-p efi-directory)
|
||
(invoke grub-mkstandalone "-O" (car efi-targets)
|
||
"-o" (string-append efi-directory "/"
|
||
(cdr efi-targets))
|
||
;; Graft the configuration file onto the image.
|
||
(string-append "boot/grub/grub.cfg=" grub-config))))
|
||
|
||
(define (install-efi-loader grub-efi esp)
|
||
"Install in ESP directory the given GRUB-EFI bootloader. Configure it to
|
||
load the Grub bootloader located in the 'Guix_image' root partition."
|
||
(let ((grub-config "grub.cfg"))
|
||
(call-with-output-file grub-config
|
||
(lambda (port)
|
||
;; Create a tiny configuration file telling the embedded grub where to
|
||
;; load the real thing. XXX This is quite fragile, and can prevent
|
||
;; the image from booting when there's more than one volume with this
|
||
;; label present. Reproducible almost-UUIDs could reduce the risk
|
||
;; (not eliminate it).
|
||
(format port
|
||
"insmod part_msdos~@
|
||
search --set=root --label Guix_image~@
|
||
configfile /boot/grub/grub.cfg~%")))
|
||
(install-efi grub-efi grub-config esp)
|
||
(delete-file grub-config)))
|