summaryrefslogtreecommitdiff
path: root/gnu/bootloader/depthcharge.scm
diff options
context:
space:
mode:
Diffstat (limited to 'gnu/bootloader/depthcharge.scm')
-rw-r--r--gnu/bootloader/depthcharge.scm107
1 files changed, 107 insertions, 0 deletions
diff --git a/gnu/bootloader/depthcharge.scm b/gnu/bootloader/depthcharge.scm
new file mode 100644
index 0000000000..58cc3f3932
--- /dev/null
+++ b/gnu/bootloader/depthcharge.scm
@@ -0,0 +1,107 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2019 Timothy Sample <samplet@ngyro.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 depthcharge)
+ #:use-module (gnu bootloader extlinux)
+ #:use-module (gnu bootloader)
+ #:use-module (gnu packages bootloaders)
+ #:use-module (guix gexp)
+ #:use-module (guix utils)
+ #:use-module (ice-9 match)
+ #:export (depthcharge-bootloader))
+
+(define (signed-kernel kernel kernel-arguments initrd)
+ (define builder
+ (with-imported-modules '((guix build utils))
+ #~(begin
+ (use-modules (guix build utils)
+ (ice-9 binary-ports)
+ (rnrs bytevectors))
+ (set-path-environment-variable "PATH" '("bin") (list #$dtc))
+
+ ;; TODO: These files have to be writable, so we copy them.
+ ;; This can probably be fixed by using a ".its" file, just
+ ;; be careful not to break initrd loading.
+ (copy-file #$kernel "zImage")
+ (chmod "zImage" #o755)
+ (copy-file (string-append (dirname #$kernel) "/lib/dtbs/"
+ "rk3288-veyron-speedy.dtb")
+ "rk3288-veyron-speedy.dtb")
+ (chmod "rk3288-veyron-speedy.dtb" #o644)
+ (copy-file #$initrd "initrd")
+ (chmod "initrd" #o644)
+
+ (invoke (string-append #$u-boot-tools "/bin/mkimage")
+ "-D" "-I dts -O dtb -p 2048"
+ "-f" "auto"
+ "-A" "arm"
+ "-O" "linux"
+ "-T" "kernel"
+ "-C" "None"
+ "-d" "zImage"
+ "-a" "0"
+ "-b" "rk3288-veyron-speedy.dtb"
+ "-i" "initrd"
+ "image.itb")
+ (call-with-output-file "bootloader.bin"
+ (lambda (port)
+ (put-bytevector port (make-bytevector 512 0))))
+ (with-output-to-file "kernel-arguments"
+ (lambda ()
+ (display (string-join (list #$@kernel-arguments)))))
+ (invoke (string-append #$vboot-utils "/bin/vbutil_kernel")
+ "--pack" #$output
+ "--version" "1"
+ "--vmlinuz" "image.itb"
+ "--arch" "arm"
+ "--keyblock" (string-append #$vboot-utils
+ "/share/vboot-utils/devkeys/"
+ "kernel.keyblock")
+ "--signprivate" (string-append #$vboot-utils
+ "/share/vboot-utils/devkeys/"
+ "kernel_data_key.vbprivk")
+ "--config" "kernel-arguments"
+ "--bootloader" "bootloader.bin"))))
+ (computed-file "vmlinux.kpart" builder))
+
+(define* (depthcharge-configuration-file config entries
+ #:key
+ (system (%current-system))
+ (old-entries '()))
+ (match entries
+ ((entry)
+ (let ((kernel (menu-entry-linux entry))
+ (kernel-arguments (menu-entry-linux-arguments entry))
+ (initrd (menu-entry-initrd entry)))
+ ;; XXX: Make this a symlink.
+ (signed-kernel kernel kernel-arguments initrd)))
+ (_ (error "Too many bootloader menu entries!"))))
+
+(define install-depthcharge
+ #~(lambda (bootloader device mount-point)
+ (let ((kpart (string-append mount-point
+ "/boot/depthcharge/vmlinux.kpart")))
+ (write-file-on-device kpart (stat:size (stat kpart)) device 0))))
+
+(define depthcharge-bootloader
+ (bootloader
+ (name 'depthcharge)
+ (package #f)
+ (installer install-depthcharge)
+ (configuration-file "/boot/depthcharge/vmlinux.kpart")
+ (configuration-file-generator depthcharge-configuration-file)))