diff options
Diffstat (limited to 'gnu/build/vm.scm')
| -rw-r--r-- | gnu/build/vm.scm | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm index 7ce1ec8e1e..57619764ce 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) @@ -315,12 +316,41 @@ SYSTEM-DIRECTORY is the name of the directory of the 'system' derivation." (mkdir-p directory) (symlink bootcfg (string-append directory "/bootcfg")))) +(define (install-efi grub esp config-file) + "Write a self-contained GRUB EFI loader to the mounted ESP using CONFIG-FILE." + (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) + (unless (zero? (system* 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=" config-file))) + (error "failed to create GRUB EFI image")))) + (define* (initialize-hard-disk device #:key bootloader-package bootcfg bootcfg-location bootloader-installer + (grub-efi #f) (partitions '())) "Initialize DEVICE as a disk containing all the <partition> objects listed in PARTITIONS, and using BOOTCFG as its bootloader configuration file. @@ -332,8 +362,13 @@ passing it a directory name where it is mounted." "Return the first partition found with the boot flag set." (member 'boot (partition-flags partition))) + (define (partition-esp? partition) + "Return the first EFI System Partition." + (member 'esp (partition-flags partition))) + (let* ((partitions (initialize-partition-table device partitions)) (root (find partition-bootable? partitions)) + (esp (find partition-esp? partitions)) (target "/fs")) (unless root (error "no bootable partition specified" partitions)) @@ -345,8 +380,34 @@ passing it a directory name where it is mounted." (mount (partition-device root) target (partition-file-system root)) (install-boot-config bootcfg bootcfg-location target) (when bootloader-installer + (display "installing bootloader...\n") (bootloader-installer bootloader-package device target)) + (when esp + ;; Mount the ESP somewhere and install GRUB UEFI image. + (let ((mount-point (string-append target "/boot/efi")) + (grub-config (string-append target "/tmp/grub-standalone.cfg"))) + (display "mounting EFI system partition...\n") + (mkdir-p mount-point) + (mount (partition-device esp) mount-point + (partition-file-system esp)) + + ;; Create a tiny configuration file telling the embedded grub + ;; where to load the real thing. + (call-with-output-file grub-config + (lambda (port) + (format port + "insmod part_msdos~@ + search --set=root --label gnu-disk-image~@ + configfile /boot/grub/grub.cfg~%"))) + + (display "creating EFI firmware image...") + (install-efi grub-efi mount-point grub-config) + (display "done.\n") + + (delete-file grub-config) + (umount mount-point))) + ;; Register BOOTCFG as a GC root. (register-bootcfg-root target bootcfg) |