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bug#26815: [PATCH 3/3] vm: Support EFI boot in base image.
From: |
Marius Bakke |
Subject: |
bug#26815: [PATCH 3/3] vm: Support EFI boot in base image. |
Date: |
Sun, 7 May 2017 16:36:47 +0200 |
* gnu/system/vm.scm (qemu-image): Add GRUB-EFI to inputs. Append 40MB
EFI System Partition.
* gnu/build/vm.scm (initialize-hard-disk): Generate grub EFI blob when ESP is
present.
---
gnu/build/vm.scm | 37 ++++++++++++++++++++++++++++++++++++-
gnu/system/vm.scm | 14 +++++++++++---
2 files changed, 47 insertions(+), 4 deletions(-)
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index ad39e29ce..a1f419776 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -27,6 +27,7 @@
#:use-module (gnu build linux-boot)
#:use-module (gnu build install)
#:use-module (guix records)
+ #:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:use-module (srfi srfi-1)
@@ -340,9 +341,16 @@ passing it a directory name where it is mounted."
"Return the first partition found with the boot flag set."
(member 'boot (partition-flags partitions)))
+ (define (esp-partition? partitions)
+ "Return the first EFI System Partition."
+ (member 'esp (partition-flags partitions)))
+
(let* ((partitions (initialize-partition-table device partitions))
(root (find partition-bootable? partitions))
- (target "/fs"))
+ (esp (find esp-partition? partitions))
+ (target "/fs")
+ ;; Grub expects EFI System Partitions to be mounted here.
+ (efi-directory (string-append target "/boot/efi")))
(unless root
(error "no bootable partition specified" partitions))
@@ -352,6 +360,33 @@ passing it a directory name where it is mounted."
(mkdir-p target)
(mount (partition-device root) target (partition-file-system root))
(install-boot-config bootcfg bootcfg-location target)
+
+ ;; If we have an ESP partition, generate a self-contained grub EFI
+ ;; image and write it to a location known by most firmwares.
+ (when esp
+ (display "mounting EFI system partition...\n")
+ (mkdir-p efi-directory)
+ (mount (partition-device esp) efi-directory
+ (partition-file-system esp))
+ (mkdir-p (string-append efi-directory "/EFI/BOOT"))
+
+ ;; Grub needs a tmpdir to prepare the image.
+ (setenv "TMPDIR" (string-append target "/tmp"))
+ ;; It also requires a tiny configuration file telling the
+ ;; memdisk where to find the real thing. TODO: Delete it.
+ (with-output-to-file (string-append target "/tmp/grubdisk.cfg")
+ (lambda _
+ (format #t
+ "insmod part_msdos~@
+ search --set=root --label gnu-disk-image~@
+ configfile /boot/grub/grub.cfg~%")))
+ (system* "grub-mkstandalone" "-O" "x86_64-efi" "-o"
+ (string-append efi-directory "/EFI/BOOT/BOOTX64.EFI")
+ ;; Embed the contents of grubdisk.cfg.
+ (string-append "boot/grub/grub.cfg=" target
+ "/tmp/grubdisk.cfg"))
+ (umount efi-directory))
+
(when bootloader-installer
(bootloader-installer bootloader device target))
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index 099e3fac3..04ccc3650 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -3,6 +3,7 @@
;;; Copyright © 2016 Christopher Allan Webber <address@hidden>
;;; Copyright © 2016 Leo Famulari <address@hidden>
;;; Copyright © 2017 Mathieu Othacehe <address@hidden>
+;;; Copyright © 2017 Marius Bakke <address@hidden>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -202,7 +203,7 @@ the image."
(guix build utils))
(let ((inputs
- '#$(append (list qemu parted e2fsprogs dosfstools)
+ '#$(append (list qemu parted e2fsprogs dosfstools grub-efi)
(map canonical-package
(list sed grep coreutils findutils gawk))
(if register-closures? (list guix) '())))
@@ -227,11 +228,18 @@ the image."
#:system-directory #$os.drv))
(partitions (list (partition
(size #$(- disk-image-size
- (* 10 (expt 2 20))))
+ (* 50 (expt 2 20))))
(label #$file-system-label)
(file-system #$file-system-type)
(flags '(boot))
- (initializer initialize)))))
+ (initializer initialize))
+ (partition
+ ;; Append a small FAT32 partition for
+ ;; use with UEFI bootloaders.
+ (size (* 40 (expt 2 20)))
+ (label "gnu-esp")
+ (file-system "vfat")
+ (flags '(esp))))))
(initialize-hard-disk "/dev/vda"
#:partitions partitions
#:bootloader
--
2.12.2
- bug#26815: [PATCH 0/3] Hybrid UEFI disk image, Marius Bakke, 2017/05/07
- bug#26815: [PATCH 1/3] vm: Add support for arbitrary partition flags., Marius Bakke, 2017/05/07
- bug#26815: [PATCH 3/3] vm: Support EFI boot in base image.,
Marius Bakke <=
- bug#26815: [PATCH 3/3] vm: Support EFI boot in base image., Danny Milosavljevic, 2017/05/07
- bug#26815: [PATCH 3/3] vm: Support EFI boot in base image., Marius Bakke, 2017/05/07
- bug#26815: [PATCH 3/3] vm: Support EFI boot in base image., Marius Bakke, 2017/05/07
- bug#26815: [PATCH 3/3] vm: Support EFI boot in base image., Marius Bakke, 2017/05/08
- bug#26815: [PATCH 3/3] vm: Support EFI boot in base image., Ludovic Courtès, 2017/05/08
- bug#26815: [PATCH 1/3] vm: Support arbitrary partition flags., Marius Bakke, 2017/05/10
- bug#26815: [PATCH 2/3] vm: Support creating FAT partitions., Marius Bakke, 2017/05/10
- bug#26815: [PATCH 3/3] vm: Add UEFI loader to disk images., Marius Bakke, 2017/05/10
- bug#26815: [PATCH 3/3] vm: Add UEFI loader to disk images., Ludovic Courtès, 2017/05/10
- bug#26815: [PATCH 3/3] vm: Add UEFI loader to disk images., Marius Bakke, 2017/05/10