;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015 Leo Famulari <leo@famulari.name>
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2016, 2017 Marius Bakke <mbakke@fastmail.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 packages grub)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix packages)
  #:use-module (guix utils)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages assembly)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages disk)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages python)
  #:use-module (gnu packages qemu)
  #:use-module (gnu packages man)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages cdrom))

(define unifont
  ;; GNU Unifont, <http://gnu.org/s/unifont>.
  ;; GRUB needs it for its graphical terminal, gfxterm.
  (origin
    (method url-fetch)
    (uri
     "http://unifoundry.com/pub/unifont-7.0.06/font-builds/unifont-7.0.06.bdf.gz")
    (sha256
     (base32
      "0p2vhnc18cnbmb39vq4m7hzv4mhnm2l0a2s7gx3ar277fwng3hys"))))

(define-public grub
  (package
    (name "grub")
    (version "2.02rc1")
    (source (origin
             (method url-fetch)
             (uri (string-append
                   "ftp://alpha.gnu.org/gnu/grub/grub-"
                   "2.02~rc1"
                   ".tar.xz"))
             (file-name (string-append name "-" version ".tar.xz"))
             (sha256
              (base32
               "0y02v19x9sb5jvj740f604vvi5j1rx8pily1jk0l64bdp7lkjlj4"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (add-after 'unpack 'patch-stuff
                   (lambda* (#:key inputs #:allow-other-keys)
                     (substitute* "grub-core/Makefile.in"
                       (("/bin/sh") (which "sh")))

                     ;; Give the absolute file name of 'mdadm', used to
                     ;; determine the root file system when it's a RAID
                     ;; device.  Failing to do that, 'grub-probe' silently
                     ;; fails if 'mdadm' is not in $PATH.
                     (substitute* "grub-core/osdep/linux/getroot.c"
                       (("argv\\[0\\] = \"mdadm\"")
                        (string-append "argv[0] = \""
                                       (assoc-ref inputs "mdadm")
                                       "/sbin/mdadm\"")))

                     ;; Make the font visible.
                     (copy-file (assoc-ref inputs "unifont") "unifont.bdf.gz")
                     (system* "gunzip" "unifont.bdf.gz")
                     #t)))))
    (inputs
     `(("gettext" ,gettext-minimal)

       ;; Depend on LVM2 for libdevmapper, used by 'grub-probe' and
       ;; 'grub-install' to recognize mapped devices (LUKS, etc.)
       ("lvm2" ,lvm2)

       ;; Depend on mdadm, which is invoked by 'grub-probe' and 'grub-install'
       ;; to determine whether the root file system is RAID.
       ("mdadm" ,mdadm)

       ("freetype" ,freetype)
       ;; ("libusb" ,libusb)
       ;; ("fuse" ,fuse)
       ("ncurses" ,ncurses)))
    (native-inputs
     `(("unifont" ,unifont)
       ("bison" ,bison)
       ("flex" ,flex)
       ("texinfo" ,texinfo)
       ("help2man" ,help2man)

       ;; Dependencies for the test suite.  The "real" QEMU is needed here,
       ;; because several targets are used.
       ("parted" ,parted)
       ("qemu" ,qemu-minimal)
       ("xorriso" ,xorriso)))
    (home-page "https://www.gnu.org/software/grub/")
    (synopsis "GRand Unified Boot loader")
    (description
     "GRUB is a multiboot bootloader.  It is used for initially loading the
kernel of an operating system and then transferring control to it.  The kernel
then goes on to load the rest of the operating system.  As a multiboot
bootloader, GRUB handles the presence of multiple operating systems installed
on the same computer; upon booting the computer, the user is presented with a
menu to select one of the installed operating systems.")
    (license license:gpl3+)
    (properties '((cpe-name . "grub2")))))

(define-public grub-efi
  (package
    (inherit grub)
    (name "grub-efi")
    (synopsis "GRand Unified Boot loader (UEFI version)")
    (inputs
     `(("efibootmgr" ,efibootmgr)
       ,@(package-inputs grub)))
    (arguments
     `(;; TODO: Tests need a UEFI firmware for qemu. There is one at
       ;; https://github.com/tianocore/edk2/tree/master/OvmfPkg .
       ;; Search for 'OVMF' in "tests/util/grub-shell.in".
       #:tests? #f
       ,@(substitute-keyword-arguments (package-arguments grub)
           ((#:configure-flags flags ''())
            `(cons "--with-platform=efi" ,flags))
           ((#:phases phases)
            `(modify-phases ,phases
               (add-after 'patch-stuff 'use-absolute-efibootmgr-path
                 (lambda* (#:key inputs #:allow-other-keys)
                   (substitute* "grub-core/osdep/unix/platform.c"
                     (("efibootmgr")
                      (string-append (assoc-ref inputs "efibootmgr")
                                     "/sbin/efibootmgr")))
                   #t)))))))))

(define-public seabios
  (package
    (name "seabios")
    (version "1.10.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://code.coreboot.org/p/seabios/downloads/get/"
                                  "seabios-" version ".tar.gz"))
              (sha256
               (base32
                "1jyjl719drnl1v0gf0l5q6qjjmkyqcqkka6s28dfdi0yqsxdsqsh"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("python-2" ,python-2)))
    (arguments
     `(#:tests? #f ; No check target.
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key inputs #:allow-other-keys)
             (let ((gcc (assoc-ref inputs "gcc")))
               (setenv "CC" (string-append gcc "/bin/gcc")))
             #t))
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (fmw (string-append out "/share/firmware")))
               (mkdir-p fmw)
               (copy-file "out/bios.bin" (string-append fmw "/bios.bin"))))))))
    (home-page "https://www.seabios.org/SeaBIOS")
    (synopsis "x86 BIOS implementation")
    (description "SeaBIOS is an open source implementation of a 16bit x86 BIOS.
SeaBIOS can run in an emulator or it can run natively on X86 hardware with the
use of coreboot.")
    ;; Dual licensed.
    (license (list license:gpl3+ license:lgpl3+))))

;; OVMF is part of the edk2 source tree.
(define edk2-commit "13a50a6fe1dcfa6600c38456ee24e0f9ecf51b5f")
(define edk2-version (git-version "20170116" "1" edk2-commit))
(define edk2-origin
  (origin
    (method git-fetch)
    (uri (git-reference
          (url "https://github.com/tianocore/edk2")
          (commit edk2-commit)))
    (file-name (git-file-name "edk2" edk2-version))
    (sha256
     (base32
      "1gy2332kdqk8bjzpcsripx10896rbvgl0ic7r344kmpiwdgm948b"))))

(define-public ovmf
  (package
    (name "ovmf")
    (version edk2-version)
    (source edk2-origin)
    (build-system gnu-build-system)
    (native-inputs
     `(("acpica" ,acpica)
       ("nasm" ,nasm)
       ("python-2" ,python-2)
       ("util-linux" ,util-linux)))
    (arguments
     `(#:tests? #f ; No check target.
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda _
             (let* ((cwd (getcwd))
                    (tools (string-append cwd "/BaseTools"))
                    (bin (string-append tools "/BinWrappers/PosixLike")))
               (setenv "WORKSPACE" cwd)
               (setenv "EDK_TOOLS_PATH" tools)
               (setenv "PATH" (string-append (getenv "PATH") ":" bin))
               (system* "bash" "edksetup.sh" "BaseTools")
               (substitute* "Conf/target.txt"
                 (("^TARGET[ ]*=.*$") "TARGET = RELEASE\n")
                 (("^TOOL_CHAIN_TAG[ ]*=.*$") "TOOL_CHAIN_TAG = GCC49\n")
                 (("^MAX_CONCURRENT_THREAD_NUMBER[ ]*=.*$")
                  (format #f "MAX_CONCURRENT_THREAD_NUMBER = ~a~%"
                          (number->string (parallel-job-count)))))
               ;; Build build support.
               (setenv "BUILD_CC" "gcc")
               (zero? (system* "make" "-C" (string-append tools "/Source/C"))))))
         (add-after 'build 'build-ia32
           (lambda _
             (substitute* "Conf/target.txt"
               (("^TARGET_ARCH[ ]*=.*$") "TARGET_ARCH = IA32\n")
               (("^ACTIVE_PLATFORM[ ]*=.*$")
                "ACTIVE_PLATFORM = OvmfPkg/OvmfPkgIa32.dsc\n"))
             (zero? (system* "build"))))
         (add-after 'build 'build-x64
           (lambda _
             (substitute* "Conf/target.txt"
               (("^TARGET_ARCH[ ]*=.*$") "TARGET_ARCH = X64\n")
               (("^ACTIVE_PLATFORM[ ]*=.*$")
                "ACTIVE_PLATFORM = OvmfPkg/OvmfPkgX64.dsc\n"))
             (zero? (system* "build"))))
         (delete 'build)
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (fmw (string-append out "/share/firmware")))
               (mkdir-p fmw)
               (copy-file "Build/OvmfIa32/RELEASE_GCC49/FV/OVMF.fd"
                          (string-append fmw "/ovmf_ia32.bin"))
               (copy-file "Build/OvmfX64/RELEASE_GCC49/FV/OVMF.fd"
                          (string-append fmw "/ovmf_x64.bin")))
             #t)))))
    (supported-systems '("x86_64-linux" "i686-linux"))
    (home-page "http://www.tianocore.org")
    (synopsis "UEFI firmware for QEMU")
    (description "OVMF is an EDK II based project to enable UEFI support for
Virtual Machines.  OVMF contains a sample UEFI firmware for QEMU and KVM.")
    (license license:expat)))