initrd: Use non-hyphenated kernel command-line parameter names.

This is to make it less surprising, given the common convention sets forth by
the kernel Linux command-line parameters.

* gnu/build/linux-boot.scm (boot-system): Rename '--load', '--repl', '--root'
and '--system' to 'gnu.load', 'gnu.repl', 'root' and 'gnu.system',
respectively.  Adjust doc.
(find-long-option): Adjust doc.
* gnu/installer/parted.scm (installer-root-partition-path): Adjust accordingly.
* gnu/system.scm (bootable-kernel-arguments): Add a VERSION argument and
update doc.  Use VERSION to conditionally return old style vs new style initrd
arguments.
(%boot-parameters-version): Increment to 1.
(operating-system-boot-parameters): Adjust doc.
(operating-system-boot-parameters-file): Likewise.
* gnu/system/linux-initrd.scm (raw-initrd, base-initrd): Likewise.
* doc/guix.texi: Adjust doc.
* gnu/build/activation.scm (boot-time-system): Adjust accordingly.
* gnu/build/hurd-boot.scm (boot-hurd-system): Likewise.
* gnu/packages/commencement.scm (%final-inputs-riscv64): Adjust comment.

3 files changed, 24 insertions, 23 deletions

diff --git a/gnu/build/activation.scm b/gnu/build/activation.scm
index 9f6126023c..10c9045740 100644
--- a/gnu/build/activation.scm
+++ b/gnu/build/activation.scm
@@ -389,8 +389,8 @@ improvement."
   "/run/current-system")
 
 (define (boot-time-system)
-  "Return the '--system' argument passed on the kernel command line."
-  (find-long-option "--system" (if (string-contains %host-type "linux-gnu")
+  "Return the 'gnu.system' argument passed on the kernel command line."
+  (find-long-option "gnu.system" (if (string-contains %host-type "linux-gnu")
                                    (linux-command-line)
                                    (command-line))))
 
diff --git a/gnu/build/hurd-boot.scm b/gnu/build/hurd-boot.scm
index ac36bd17d4..ad3c50d61e 100644
--- a/gnu/build/hurd-boot.scm
+++ b/gnu/build/hurd-boot.scm
@@ -254,7 +254,7 @@ set."
   "This procedure is meant to be called from an early RC script.
 
 Install the relevant passive translators on the first boot.  Then, run system
-activation by using the kernel command-line options '--system' and '--load';
+activation by using the kernel command-line options 'gnu.system' and 'gnu.load';
 starting the Shepherd.
 
 XXX TODO: see linux-boot.scm:boot-system.
@@ -265,14 +265,14 @@ XXX TODO: use Linux xattr/setxattr to remove (settrans in) /libexec/RUNSYSTEM
 "
 
   (display "Welcome, this is GNU's early boot Guile.\n")
-  (display "Use '--repl' for an initrd REPL.\n\n")
+  (display "Use 'gnu.repl' for an initrd REPL.\n\n")
 
   (call-with-error-handling
    (lambda ()
 
      (let* ((args    (command-line))
-            (system  (find-long-option "--system" args))
-            (to-load (find-long-option "--load" args)))
+            (system  (find-long-option "gnu.system" args))
+            (to-load (find-long-option "gnu.load" args)))
 
        (format #t "Setting-up essential translators...\n")
        (setenv "PATH" (string-append system "/profile/bin"))
@@ -286,7 +286,7 @@ XXX TODO: use Linux xattr/setxattr to remove (settrans in) /libexec/RUNSYSTEM
        (unless (zero? (system* "/hurd/mach-defpager"))
          (format #t "FAILED...Good luck!\n"))
 
-       (cond ((member "--repl" args)
+       (cond ((member "gnu.repl" args)
               (format #t "Starting repl...\n")
               (start-repl))
              (to-load
@@ -298,7 +298,7 @@ XXX TODO: use Linux xattr/setxattr to remove (settrans in) /libexec/RUNSYSTEM
               (sleep 2)
               (reboot))
              (else
-              (display "no boot file passed via '--load'\n")
+              (display "no boot file passed via 'gnu.load'\n")
               (display "entering a warm and cozy REPL\n")
               (start-repl)))))
    #:on-error on-error))
diff --git a/gnu/build/linux-boot.scm b/gnu/build/linux-boot.scm
index 0ae316849e..cfa1ab2fcb 100644
--- a/gnu/build/linux-boot.scm
+++ b/gnu/build/linux-boot.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2016, 2017, 2019–2021 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net>
+;;; Copyright © 2020, 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -93,7 +94,7 @@
      get-string-all)))
 
 (define (find-long-option option arguments)
-  "Find OPTION among ARGUMENTS, where OPTION is something like \"--load\".
+  "Find OPTION among ARGUMENTS, where OPTION is something like \"gnu.load\".
 Return the value associated with OPTION, or #f on failure."
   (let ((opt (string-append option "=")))
     (and=> (find (cut string-prefix? opt <>)
@@ -499,12 +500,12 @@ LINUX-MODULE-DIRECTORY, then installing KEYMAP-FILE with 'loadkeys' (if
 KEYMAP-FILE is true), then setting up QEMU guest networking if
 QEMU-GUEST-NETWORKING? is true, calling PRE-MOUNT, mounting the file systems
 specified in MOUNTS, and finally booting into the new root if any.  The initrd
-supports kernel command-line options '--load', '--root', and '--repl'.  It
-also honors a subset of the documented Linux kernel command-line parameters
-such as 'fsck.mode', 'resume' and 'rootdelay'.
+supports kernel command-line parameters 'gnu.load' and 'gnu.repl'.  It also
+honors a subset of the Linux kernel command-line parameters such as
+'fsck.mode', 'resume', 'root' and 'rootdelay'.
 
-Mount the root file system, specified by the '--root' command-line argument,
-if any.
+Mount the root file system, specified by the 'root' command-line argument, if
+any.
 
 MOUNTS must be a list of <file-system> objects.
 
@@ -517,25 +518,25 @@ upon error."
     (string=? (file-system-mount-point fs) "/"))
 
   (define (device-string->file-system-device device-string)
-    ;; The "--root=SPEC" kernel command-line option always provides a
-    ;; string, but the string can represent a device, an nfs-root, a UUID, or a
-    ;; label.  So check for all four.
+    ;; The "root=SPEC" kernel command-line option always provides a string,
+    ;; but the string can represent a device, an nfs-root, a UUID, or a label.
+    ;; So check for all four.
     (cond ((string-prefix? "/" device-string) device-string)
           ((string-contains device-string ":/") device-string) ; nfs-root
           ((uuid device-string) => identity)
           (else (file-system-label device-string))))
 
   (display "Welcome, this is GNU's early boot Guile.\n")
-  (display "Use '--repl' for an initrd REPL.\n\n")
+  (display "Use 'gnu.repl' for an initrd REPL.\n\n")
 
   (call-with-error-handling
     (lambda ()
       (mount-essential-file-systems)
       (let* ((args    (linux-command-line))
-             (to-load (find-long-option "--load" args))
-             ;; If present, ‘--root’ on the kernel command line takes precedence
+             (to-load (find-long-option "gnu.load" args))
+             ;; If present, ‘root’ on the kernel command line takes precedence
              ;; over the ‘device’ field of the root <file-system> record.
-             (root-device (and=> (find-long-option "--root" args)
+             (root-device (and=> (find-long-option "root" args)
                                  device-string->file-system-device))
              (root-fs (or (find root-mount-point? mounts)
                           ;; Fall back to fictitious defaults.
@@ -564,7 +565,7 @@ upon error."
                   (_ 'preen))
                 (file-system-repair fs))))
 
-        (when (member "--repl" args)
+        (when (member "gnu.repl" args)
           (start-repl))
 
         (display "loading kernel modules...\n")
@@ -652,7 +653,7 @@ the root file system...\n" root-delay)
               (sleep 2)
               (reboot))
             (begin
-              (display "no boot file passed via '--load'\n")
+              (display "no boot file passed via 'gnu.load'\n")
               (display "entering a warm and cozy REPL\n")
               (start-repl)))))
     #:on-error on-error))