mirror of
https://git.in.rschanz.org/ryan77627/guix.git
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bc09e7ab56
Without this, the kernel cannot write to the display until the full-featured driver module (often i915) is loaded from the root file system. If the root file system is encrypted, the initrd's passphrase prompt won't make it to the screen, and the fully responsive system will appear frozen whilst waiting for user input. * gnu/packages/aux-files/linux-libre/4.4-i686.conf, gnu/packages/aux-files/linux-libre/4.4-x86_64.conf, gnu/packages/aux-files/linux-libre/4.14-i686.conf, gnu/packages/aux-files/linux-libre/4.14-x86_64.conf, gnu/packages/aux-files/linux-libre/4.19-i686.conf, gnu/packages/aux-files/linux-libre/4.19-x86_64.conf, gnu/packages/aux-files/linux-libre/5.4-i686.conf, gnu/packages/aux-files/linux-libre/5.4-x86_64.conf, gnu/packages/aux-files/linux-libre/5.10-i686.conf, gnu/packages/aux-files/linux-libre/5.10-x86_64.conf, gnu/packages/aux-files/linux-libre/5.15-i686.conf, gnu/packages/aux-files/linux-libre/5.15-x86_64.conf: Mark simple framebuffers as generic system ones and enable ‘Google’ firmware drivers to enable Coreboot table support and its dependent framebuffer driver module. * gnu/system/linux-initrd.scm (default-initrd-modules): Add the framebuffer_coreboot and simplefb modules on x86 systems.
419 lines
17 KiB
Scheme
419 lines
17 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2016 Mark H Weaver <mhw@netris.org>
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;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
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;;; Copyright © 2017, 2019 Mathieu Othacehe <m.othacehe@gmail.com>
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;;; Copyright © 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu system linux-initrd)
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#:use-module (guix gexp)
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#:use-module (guix utils)
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#:use-module ((guix store)
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#:select (%store-prefix))
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#:use-module ((guix derivations)
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#:select (derivation->output-path))
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#:use-module (guix modules)
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#:use-module (gnu packages compression)
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#:use-module (gnu packages disk)
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#:use-module (gnu packages linux)
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#:use-module (gnu packages file-systems)
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#:use-module (gnu packages guile)
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#:use-module ((gnu packages xorg)
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#:select (console-setup xkeyboard-config))
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#:use-module ((gnu packages make-bootstrap)
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#:select (%guile-static-stripped))
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#:use-module (gnu system file-systems)
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#:use-module (gnu system mapped-devices)
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#:use-module (gnu system keyboard)
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#:use-module (ice-9 match)
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#:use-module (ice-9 regex)
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#:use-module (ice-9 vlist)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:export (expression->initrd
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%base-initrd-modules
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raw-initrd
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file-system-packages
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base-initrd))
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;;; Commentary:
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;;;
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;;; Tools to build initial RAM disks (initrd's) for Linux-Libre, and in
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;;; particular initrd's that run Guile.
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;;;
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;;; Code:
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(define* (expression->initrd exp
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#:key
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(guile %guile-static-stripped)
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(gzip gzip)
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(name "guile-initrd")
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(system (%current-system)))
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"Return as a file-like object a Linux initrd (a gzipped cpio archive)
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containing GUILE and that evaluates EXP, a G-expression, upon booting. All
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the derivations referenced by EXP are automatically copied to the initrd."
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;; General Linux overview in `Documentation/early-userspace/README' and
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;; `Documentation/filesystems/ramfs-rootfs-initramfs.txt'.
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(define init
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(program-file "init" exp #:guile guile))
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(define (import-module? module)
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;; Since we don't use deduplication support in 'populate-store', don't
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;; import (guix store deduplication) and its dependencies, which includes
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;; Guile-Gcrypt. That way we can run tests with '--bootstrap'.
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(and (guix-module-name? module)
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(not (equal? module '(guix store deduplication)))))
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(define builder
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;; Do not use "guile-zlib" extension here, otherwise it would drag the
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;; non-static "zlib" package to the initrd closure. It is not needed
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;; anyway because the modules are stored uncompressed within the initrd.
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(with-imported-modules (source-module-closure
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'((gnu build linux-initrd))
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#:select? import-module?)
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#~(begin
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(use-modules (gnu build linux-initrd))
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(mkdir #$output)
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;; The guile used in the initrd must be present in the store, so
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;; that module loading works once the root is switched.
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;;
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;; To ensure that is the case, add an explicit reference to the
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;; guile package used in the initrd to the output.
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;;
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;; This fixes guix-patches bug #28399, "Fix mysql activation, and
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;; add a basic test".
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(call-with-output-file (string-append #$ output "/references")
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(lambda (port)
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(simple-format port "~A\n" #$guile)))
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(build-initrd (string-append #$output "/initrd.cpio.gz")
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#:guile #$guile
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#:init #$init
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;; Copy everything INIT refers to into the initrd.
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#:references-graphs '("closure")
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#:gzip (string-append #+gzip "/bin/gzip")))))
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(file-append (computed-file name builder
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#:options
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`(#:references-graphs (("closure" ,init))))
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"/initrd.cpio.gz"))
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(define (flat-linux-module-directory linux modules)
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"Return a flat directory containing the Linux kernel modules listed in
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MODULES and taken from LINUX."
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(define imported-modules
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(source-module-closure '((gnu build linux-modules)
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(guix build utils))))
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(define build-exp
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(with-imported-modules imported-modules
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(with-extensions (list guile-zlib)
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#~(begin
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(use-modules (gnu build linux-modules)
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(guix build utils)
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(srfi srfi-1)
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(srfi srfi-26))
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(define module-dir
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(string-append #$linux "/lib/modules"))
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(define modules
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(let* ((lookup (cut find-module-file module-dir <>))
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(modules (map lookup '#$modules)))
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(append modules
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(recursive-module-dependencies
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modules
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#:lookup-module lookup))))
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(define (maybe-uncompress file)
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;; If FILE is a compressed module, uncompress it, as the initrd
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;; is already gzipped as a whole.
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(cond
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((string-contains file ".ko.gz")
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(invoke #+(file-append gzip "/bin/gunzip") file))))
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(mkdir #$output)
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(for-each (lambda (module)
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(let ((out-module
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(string-append #$output "/"
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(basename module))))
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(format #t "copying '~a'...~%" module)
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(copy-file module out-module)
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(maybe-uncompress out-module)))
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(delete-duplicates modules))
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;; Hyphen or underscore? This database tells us.
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(write-module-name-database #$output)))))
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(computed-file "linux-modules" build-exp))
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(define* (raw-initrd file-systems
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#:key
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(linux linux-libre)
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(linux-modules '())
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(mapped-devices '())
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(keyboard-layout #f)
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(helper-packages '())
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qemu-networking?
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volatile-root?
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(on-error 'debug))
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"Return as a file-like object a raw initrd, with kernel
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modules taken from LINUX. FILE-SYSTEMS is a list of file-systems to be
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mounted by the initrd, possibly in addition to the root file system specified
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on the kernel command line via '--root'. LINUX-MODULES is a list of kernel
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modules to be loaded at boot time. MAPPED-DEVICES is a list of device
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mappings to realize before FILE-SYSTEMS are mounted.
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HELPER-PACKAGES is a list of packages to be copied in the initrd. It may include
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e2fsck/static or other packages needed by the initrd to check root partition.
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When true, KEYBOARD-LAYOUT is a <keyboard-layout> record denoting the desired
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console keyboard layout. This is done before MAPPED-DEVICES are set up and
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before FILE-SYSTEMS are mounted such that, should the user need to enter a
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passphrase or use the REPL, this happens using the intended keyboard layout.
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When QEMU-NETWORKING? is true, set up networking with the standard QEMU
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parameters.
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When VOLATILE-ROOT? is true, the root file system is writable but any changes
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to it are lost.
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ON-ERROR is passed to 'call-with-error-handling'; it determines what happens
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upon error."
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(define device-mapping-commands
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;; List of gexps to open the mapped devices.
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(map (lambda (md)
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(let* ((source (mapped-device-source md))
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(targets (mapped-device-targets md))
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(type (mapped-device-type md))
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(open (mapped-device-kind-open type)))
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(open source targets)))
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mapped-devices))
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(define file-system-scan-commands
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;; File systems like btrfs need help to assemble multi-device file systems
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;; but do not use manually-specified <mapped-devices>.
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(let ((file-system-types (map file-system-type file-systems)))
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(if (member "btrfs" file-system-types)
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;; Ignore errors: if the system manages to boot anyway, the better.
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#~((system* (string-append #$btrfs-progs/static "/bin/btrfs")
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"device" "scan"))
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#~())))
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(define kodir
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(flat-linux-module-directory linux linux-modules))
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(expression->initrd
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(with-imported-modules (source-module-closure
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'((gnu build linux-boot)
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(guix build utils)
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(guix build bournish)
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(gnu system file-systems)
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(gnu build file-systems)))
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#~(begin
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(use-modules (gnu build linux-boot)
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(gnu system file-systems)
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((guix build utils) #:hide (delete))
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(guix build bournish) ;add the 'bournish' meta-command
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(srfi srfi-1) ;for lvm-device-mapping
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(srfi srfi-26)
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;; FIXME: The following modules are for
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;; LUKS-DEVICE-MAPPING. We should instead propagate
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;; this info via gexps.
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((gnu build file-systems)
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#:select (find-partition-by-luks-uuid))
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(rnrs bytevectors))
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(with-output-to-port (%make-void-port "w")
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(lambda ()
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(set-path-environment-variable "PATH" '("bin" "sbin")
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'#$helper-packages)))
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(parameterize ((current-warning-port (%make-void-port "w")))
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(boot-system #:mounts
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(map spec->file-system
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'#$(map file-system->spec file-systems))
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#:pre-mount (lambda ()
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(and #$@device-mapping-commands
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#$@file-system-scan-commands))
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#:linux-modules '#$linux-modules
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#:linux-module-directory '#$kodir
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#:keymap-file #+(and=> keyboard-layout
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keyboard-layout->console-keymap)
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#:qemu-guest-networking? #$qemu-networking?
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#:volatile-root? '#$volatile-root?
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#:on-error '#$on-error))))
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#:name "raw-initrd"))
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(define* (file-system-packages file-systems #:key (volatile-root? #f))
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"Return the list of statically-linked, stripped packages to check
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FILE-SYSTEMS."
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`(,@(if (find (lambda (fs)
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(string-prefix? "ext" (file-system-type fs)))
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file-systems)
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(list e2fsck/static)
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'())
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,@(if (find (lambda (fs)
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(string-suffix? "fat" (file-system-type fs)))
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file-systems)
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(list fatfsck/static)
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'())
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,@(if (find (file-system-type-predicate "bcachefs") file-systems)
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(list bcachefs/static)
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'())
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,@(if (find (file-system-type-predicate "btrfs") file-systems)
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(list btrfs-progs/static)
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'())
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,@(if (find (file-system-type-predicate "jfs") file-systems)
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(list jfs_fsck/static)
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'())
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,@(if (find (file-system-type-predicate "ntfs") file-systems)
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(list ntfsfix/static)
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'())
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,@(if (find (file-system-type-predicate "f2fs") file-systems)
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(list f2fs-fsck/static)
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'())
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,@(if (find (file-system-type-predicate "xfs") file-systems)
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(list xfs_repair/static)
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'())))
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(define-syntax vhash ;TODO: factorize
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(syntax-rules (=>)
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"Build a vhash with the given key/value mappings."
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((_)
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vlist-null)
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((_ (key others ... => value) rest ...)
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(vhash-cons key value
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(vhash (others ... => value) rest ...)))
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((_ (=> value) rest ...)
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(vhash rest ...))))
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(define-syntax lookup-procedure
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(syntax-rules (else)
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"Return a procedure that lookups keys in the given dictionary."
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((_ mapping ... (else default))
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(let ((table (vhash mapping ...)))
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(lambda (key)
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(match (vhash-assoc key table)
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(#f default)
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((key . value) value)))))))
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(define file-system-type-modules
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;; Given a file system type, return the list of modules it needs.
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(lookup-procedure ("cifs" => '("md4" "ecb" "cifs"))
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("9p" => '("9p" "9pnet_virtio"))
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("bcachefs" => '("bcachefs"))
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("btrfs" => '("btrfs"))
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("iso9660" => '("isofs"))
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("jfs" => '("jfs"))
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("f2fs" => '("f2fs" "crc32_generic"))
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("xfs" => '("xfs"))
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(else '())))
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(define (file-system-modules file-systems)
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"Return the list of Linux modules needed to mount FILE-SYSTEMS."
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(append-map (compose file-system-type-modules file-system-type)
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file-systems))
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(define* (default-initrd-modules
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#:optional
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(system (or (%current-target-system)
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(%current-system))))
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"Return the list of modules included in the initrd by default."
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(define virtio-modules
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;; Modules for Linux para-virtualized devices, for use in QEMU guests.
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'("virtio_pci" "virtio_balloon" "virtio_blk" "virtio_net"
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"virtio_console" "virtio-rng"))
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`("ahci" ;for SATA controllers
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"usb-storage" "uas" ;for the installation image etc.
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"usbhid" "hid-generic" "hid-apple" ;keyboards during early boot
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"dm-crypt" "xts" "serpent_generic" "wp512" ;for encrypted root partitions
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"nls_iso8859-1" ;for `mkfs.fat`, et.al
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,@(if (string-match "^(x86_64|i[3-6]86)-" system)
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'("framebuffer_coreboot" "simplefb" ;for display during early boot
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"pata_acpi" "pata_atiixp" ;for ATA controllers
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"isci") ;for SAS controllers like Intel C602
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'())
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,@virtio-modules))
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(define-syntax %base-initrd-modules
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;; This more closely matches our naming convention.
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(identifier-syntax (default-initrd-modules)))
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(define* (base-initrd file-systems
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#:key
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(linux linux-libre)
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(linux-modules '())
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(mapped-devices '())
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(keyboard-layout #f)
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qemu-networking?
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volatile-root?
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(extra-modules '()) ;deprecated
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(on-error 'debug))
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"Return as a file-like object a generic initrd, with kernel
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modules taken from LINUX. FILE-SYSTEMS is a list of file-systems to be
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mounted by the initrd, possibly in addition to the root file system specified
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on the kernel command line via '--root'. MAPPED-DEVICES is a list of device
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mappings to realize before FILE-SYSTEMS are mounted.
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When true, KEYBOARD-LAYOUT is a <keyboard-layout> record denoting the desired
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console keyboard layout. This is done before MAPPED-DEVICES are set up and
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before FILE-SYSTEMS are mounted such that, should the user need to enter a
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passphrase or use the REPL, this happens using the intended keyboard layout.
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QEMU-NETWORKING? and VOLATILE-ROOT? behaves as in raw-initrd.
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The initrd is automatically populated with all the kernel modules necessary
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for FILE-SYSTEMS and for the given options. Additional kernel
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modules can be listed in LINUX-MODULES. They will be added to the initrd, and
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loaded at boot time in the order in which they appear."
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(define linux-modules*
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;; Modules added to the initrd and loaded from the initrd.
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`(,@linux-modules
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,@(file-system-modules file-systems)
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,@(if volatile-root?
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'("overlay")
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'())
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,@extra-modules))
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(define helper-packages
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(append (file-system-packages file-systems
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#:volatile-root? volatile-root?)
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(if keyboard-layout
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(list loadkeys-static)
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'())))
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(raw-initrd file-systems
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#:linux linux
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#:linux-modules linux-modules*
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#:mapped-devices mapped-devices
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#:helper-packages helper-packages
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#:keyboard-layout keyboard-layout
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#:qemu-networking? qemu-networking?
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#:volatile-root? volatile-root?
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#:on-error on-error))
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;;; linux-initrd.scm ends here
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