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;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
;;;
;;; 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 (guix import buildroot)
#:use-module (ice-9 ftw)
#:use-module (ice-9 match)
#:use-module (ice-9 peg)
#:use-module (ice-9 receive)
#:use-module ((ice-9 rdelim) #:select (read-line))
#:use-module (ice-9 textual-ports)
#:use-module (ice-9 vlist)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-2)
#:use-module (web uri)
#:use-module (guix build-system)
#:use-module (guix build-system ocaml)
#:use-module (guix http-client)
#:use-module (guix git)
#:use-module (guix ui)
#:use-module (guix packages)
#:use-module (guix store)
#:use-module (guix upstream)
#:use-module (guix utils)
#:use-module (guix import utils)
#:use-module ((guix licenses) #:prefix license:)
#:export (buildroot->guix-package))
(define download
(memoize
(lambda* (url #:optional git)
(with-store store
(if git
(latest-repository-commit store url)
(download-to-store store url))))))
(define (decomment line)
(match (string-split line #\#)
((a b ...)
(string-trim a))))
(define (read-configuration-file port)
(filter-map
(lambda (line)
(match (string-split (decomment line) #\=)
(("") ; comment etc
#f)
((key value-string)
(cons key
(cond
((string-prefix? "\"" value-string)
(substring value-string 1 (- (string-length value-string) 1))) ; FIXME: Be more correct.
((string-prefix? "0" value-string)
(string->number value-string))
((string-prefix? "1" value-string)
(string->number value-string))
((string-prefix? "2" value-string)
(string->number value-string))
((string-prefix? "3" value-string)
(string->number value-string))
((string-prefix? "4" value-string)
(string->number value-string))
((string-prefix? "5" value-string)
(string->number value-string))
((string-prefix? "6" value-string)
(string->number value-string))
((string-prefix? "7" value-string)
(string->number value-string))
((string-prefix? "8" value-string)
(string->number value-string))
((string-prefix? "9" value-string)
(string->number value-string))
(else
(string->symbol value-string)))))))
(read-lines port)))
(define (buildroot->guix-package name)
(let* ((buildroot-root-directory
(download "git://git.buildroot.net/buildroot" #t))
(buildroot-configuration-directory
(string-append buildroot-root-directory "/configs"))
(buildroot-configuration-name
(string-append buildroot-configuration-directory "/" name))
(buildroot-configuration
(if (file-exists? buildroot-configuration-name)
(call-with-input-file buildroot-configuration-name read-configuration-file)
(begin
(display "Unknown buildroot configuration. Possible values are: " (current-error-port))
(display (scandir buildroot-configuration-directory) (current-error-port))
(newline (current-error-port))
#f)))
(buildroot-board-directory
(string-append buildroot-root-directory "/board")))
(and buildroot-configuration (assoc-ref buildroot-configuration "BR2_TARGET_UBOOT_BOARD_DEFCONFIG")
(begin
;(write buildroot-configuration)
;(newline)
; BR2_TARGET_UBOOT=y
; BR2_TARGET_UBOOT_BOARD_DEFCONFIG="orangepi_zero"
; BR2_TARGET_UBOOT_NEEDS_DTC=y
; BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
; BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot-sunxi-with-spl.bin"
; BR2_TARGET_UBOOT_BOOT_SCRIPT=y
; BR2_TARGET_UBOOT_BOOT_SCRIPT_SOURCE="board/orangepi/orangepi-zero/boot.cmd"
; [BR2_PACKAGE_HOST_DOSFSTOOLS=y => install-buildroot-u-boot requires "dosfstools" package in profile]
; BR2_PACKAGE_HOST_GENIMAGE=y => install-buildroot-u-boot requires "genimage" package in profile"
; [BR2_PACKAGE_HOST_MTOOLS=y => install-buildroot-u-boot requires "mtools" package in profile]
; [BR2_PACKAGE_HOST_UBOOT_TOOLS=y => install-buildroot-u-boot requires "u-boot-tools" package in profile]
; BR2_ROOTFS_POST_IMAGE_SCRIPT
; BR2_ROOTFS_POST_SCRIPT_ARGS
; BR2_TARGET_ROOTFS_EXT2
; BR2_TARGET_ROOTFS_EXT2_4
; BR2_TARGET_ROOTFS_EXT2_SIZE
(values
`((bootloader
(inherit u-boot-bootloader)
(package
(make-buildroot-u-boot-package
,(string-append (assoc-ref buildroot-configuration "BR2_TARGET_UBOOT_BOARD_DEFCONFIG"))
(quote ,(filter (match-lambda
((a . 'y)
(string-prefix? "BR2_TARGET_UBOOT_" a))
((a . 'n)
(string-prefix? "BR2_TARGET_UBOOT_" a))
(_ #f))
buildroot-configuration))
,(if (eq? (assoc-ref buildroot-configuration "BR2_aarch64") 'y)
"aarch64-linux-gnu"
"arm-linux-gnueabihf")))
(installer (install-buildroot-u-boot
,(assoc-ref buildroot-configuration
"BR2_ROOTFS_POST_IMAGE_SCRIPT")
,(assoc-ref buildroot-configuration
"BR2_ROOTFS_POST_SCRIPT_ARGS"))))))))))
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