;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
;;;
;;; This program 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.
;;;
;;; This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

(define-module (nongnu packages linux)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages linux)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix build-system trivial)
  #:use-module (nonguix licenses))

(define (linux-urls version)
  "Return a list of URLS for Linux VERSION."
  (let ((major-version (string-take version 1)))
    (list (string-append "https://www.kernel.org/pub/linux/kernel/v"
                         major-version ".x/linux-" version ".tar.xz"))))

(define (corrupt-linux freedo version hash)
  (package
    (inherit freedo)
    (name "linux")
    (version version)
    (source (origin
              (method url-fetch)
              (uri (linux-urls version))
              (sha256 (base32 hash))))
    (home-page "https://www.kernel.org/")
    (synopsis "Linux kernel with nonfree binary blobs included")
    (description
     "The unmodified Linux kernel, including nonfree blobs, for running GuixSD
on hardware which requires nonfree software to function.")))

(define-public linux
  (corrupt-linux linux-libre "5.1.5"
                 "1nvdrzrqqx5whj8sfqrxn1xmxx64595j0iz2wkzgpglprbsr17yp"))

(define-public linux-4.19
  (corrupt-linux linux-libre-4.19 "4.19.46"
                 "0yp6azpw1phnng39jlyykhyqdfgpxar739fvlgs5j8l7ibz54yq9"))

(define-public linux-4.14
  (corrupt-linux linux-libre-4.14 "4.14.122"
                 "1xb87zwnw0sv9v53c61jlw9d1dl15m7rbq4h50yqpqbpz07g98y8"))

(define-public linux-4.9
  (corrupt-linux linux-libre-4.9 "4.9.179"
                 "1qqy2ysd61gq9zlh1yg71354wn8rbp8hkz94j6nnv00305xlnbjk"))

(define-public linux-4.4
  (corrupt-linux linux-libre-4.4 "4.4.180"
                 "0ykai953rpy9zkb4qxb63y6pwwbwlnvx69nhb797zfw1scbh4i8s"))

(define-public linux-firmware
  (let ((commit "92e17d0dd2437140fab044ae62baf69b35d7d1fa")
        (revision "1"))
    (package
      (name "linux-firmware")
      (version (string-append "20190502-" revision "."
                              (string-take commit 7)))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url (string-append
                            "https://git.kernel.org/pub/scm/"
                            "linux/kernel/git/firmware/linux-firmware.git"))
                      (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "1bsgp124jhs9bbjjq0fzmdsziwx1y5aivkgpj8v56ar0y2zmrw2d"))))
      (build-system trivial-build-system)
      (arguments
       `(#:modules ((guix build utils))
         #:builder (begin
                     (use-modules (guix build utils))
                     (let ((source (assoc-ref %build-inputs "source"))
                           (destination (string-append %output "/lib/firmware")))
                       (mkdir-p destination)
                       (copy-recursively source destination #:follow-symlinks? #t)
                       #t))))
      (home-page
       "http://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git")
      (synopsis "Nonfree firmware blobs for Linux")
      (description "Nonfree firmware blobs for enabling support for various
hardware in the Linux kernel.  This is a large package which may be overkill
if your hardware is supported by one of the smaller firmware packages.")
      (license
       (nonfree
        (string-append "https://git.kernel.org/pub/scm/linux/kernel/git/"
                       "firmware/linux-firmware.git/plain/WHENCE"))))))

(define-public ath3k-firmware
  (package
   (inherit linux-firmware)
   (name "ath3k-firmware")
   (build-system trivial-build-system)
   (arguments
    `(#:modules ((guix build utils))
      #:builder
      (begin
        (use-modules (guix build utils))
        (let ((source (assoc-ref %build-inputs "source"))
              (fw-dir (string-append %output "/lib/firmware")))
          (mkdir-p fw-dir)
          (for-each (lambda (file)
                      (copy-file (string-append source "/" file)
                                 (string-append fw-dir "/" file)))
                    (list "ath3k-1.fw"
                          "LICENCE.atheros_firmware"
                          "LICENSE.QualcommAtheros_ar3k"
                          "WHENCE"))
          (copy-recursively (string-append source "/ar3k")
                            (string-append fw-dir "/ar3k"))
          #t))))
   (synopsis "Nonfree firmware blobs for the ath3k Bluetooth driver")
   (description "Nonfree firmware blobs for the ath3k Bluetooth driver. ath3k
is the Linux Bluetooth driver for Atheros AR3011/AR3012 Bluetooth chipsets.")
   (license
    (list
     (nonfree
      (string-append
       "https://git.kernel.org/pub/scm/linux/kernel/git/firmware"
       "/linux-firmware.git/plain/LICENCE.atheros_firmware"))
     (nonfree
      (string-append
       "https://git.kernel.org/pub/scm/linux/kernel/git/firmware"
       "/linux-firmware.git/plain/LICENSE.QualcommAtheros_ar3k"))))))

(define-public iwlwifi-firmware
  (package
    (inherit linux-firmware)
    (name "iwlwifi-firmware")
    (build-system trivial-build-system)
    (arguments
     `(#:modules ((guix build utils))
       #:builder
       (begin
         (use-modules (guix build utils))
         (let ((source (assoc-ref %build-inputs "source"))
               (fw-dir (string-append %output "/lib/firmware/")))
           (mkdir-p fw-dir)
           (for-each (lambda (file)
                       (copy-file file
                                  (string-append fw-dir (basename file))))
                     (cons*
                      (string-append source "/LICENCE.iwlwifi_firmware")
                      (find-files source
                                  "iwlwifi-.*\\.ucode$")))
           #t))))
    (home-page "https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi")
    (synopsis "Nonfree firmware for Intel wifi chips")
    (description "The proprietary iwlwifi kernel module is required by many
modern Intel wifi cards (commonly found in laptops).  This blob enables
support for 5GHz and 802.11ac, among others.")
    (license
     (nonfree (string-append
               "https://git.kernel.org/pub/scm/linux/kernel/git/firmware"
               "/linux-firmware.git/plain/LICENCE.iwlwifi_firmware")))))

(define-public broadcom-bt-firmware
  (package
    (name "broadcom-bt-firmware")
    (version "12.0.1.710")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "http://dlcdnet.asus.com/pub/ASUS/wireless/"
                           "USB-BT400/DR_USB_BT400_"
                           (string-filter (char-set-complement (char-set #\.))
                                                               version)
                           "_Windows.zip"))
       (sha256
        (base32
         "1jzg1yl2hrfdh9prr2ds4rl6c69m2f8bf94m72p3rlddjvi8jj58"))))
    (build-system trivial-build-system)
    (arguments
     `(#:modules ((guix build utils)
                  (ice-9 rdelim)
                  (ice-9 regex))
       #:builder
       (begin
         (use-modules (guix build utils)
                      (ice-9 rdelim)
                      (ice-9 regex))
         (let ((PATH (string-append (assoc-ref %build-inputs "unzip") "/bin:"
                                    (assoc-ref %build-inputs "bluez") "/bin"))
               (source (assoc-ref %build-inputs "source"))
               (firmware-dir (string-append %output "/lib/firmware/brcm/")))
           (setenv "PATH" PATH)
           (system* "unzip" source)
           (chdir "Win10_USB-BT400_DRIVERS/Win10_USB-BT400_Driver_Package/64/")
           (mkdir-p firmware-dir)
           ;; process the inf file to get the correct filenames
           (with-input-from-file "bcbtums-win8x64-brcm.inf"
             (lambda ()
               (do ((line (read-line) (read-line))
                    (devices '()))
                   ((eof-object? line) #t)
                 ;; these two `lets' are like awk patterns matching against
                 ;; records. link devices in this file with its vids and pids
                 (let ((rcrd (string-match "%=Blue(.*),.*VID_(....).*PID_(....)"
                                           line)))
                   (when rcrd
                     (set! devices
                           (assoc-set! devices (match:substring rcrd 1)
                                       `((vid . ,(match:substring rcrd 2))
                                         (pid . ,(match:substring rcrd 3)))))))
                 ;; find the hex file associated with each device, build the
                 ;; output file name
                 (let ((rcrd (string-match "\\[(RAMUSB.*)\\.CopyList\\]" line)))
                   (when rcrd
                     (let* ((key (match:substring rcrd 1))
                            ;; this happens to be 3 lines down every time
                            (hex-file (begin (read-line)
                                             (read-line)
                                             (string-drop-right (read-line) 1)))
                            (chipset (car (string-tokenize
                                           hex-file
                                           char-set:letter+digit)))
                            (vid (assoc-ref (assoc-ref devices key) 'vid))
                            (pid (assoc-ref (assoc-ref devices key) 'pid))
                            (hcd-file (string-append chipset "-"
                                                     (string-downcase vid) "-"
                                                     (string-downcase pid)
                                                     ".hcd")))
                       ;; finally convert the file, phew!
                       (system* "hex2hcd"
                                "-o" (string-append firmware-dir hcd-file)
                                hex-file)))))))))))
    (native-inputs
     `(("bluez" ,bluez)
       ("unzip" ,unzip)))
    (home-page "http://www.broadcom.com/support/bluetooth")
    (synopsis "Broadcom bluetooth firmware")
    (description
     "This package contains nonfree firmware for the following bluetooth
chipsets from Broadcom:
@itemize
@item BCM4335C0
@item BCM4350C5
@item BCM4356A2
@item BCM20702A1
@item BCM20702B0
@item BCM20703A1
@item BCM43142A0
@end itemize")
    (license (undistributable "http://www.broadcom.com/support/bluetooth"))))