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[PATCH] system: grub: Adjust eye-candy to work on non-Intel systems


From: Mark H Weaver
Subject: [PATCH] system: grub: Adjust eye-candy to work on non-Intel systems
Date: Sun, 23 Aug 2015 14:29:46 -0400

This patch adjusts the 'eye-candy' portion of our GRUB configuration to
work properly on non-Intel systems, and specially on Loongson machines.

      Mark


>From 943a4a9e30e1e659a6e1591e965d215bf8e8f351 Mon Sep 17 00:00:00 2001
From: Mark H Weaver <address@hidden>
Date: Sun, 9 Aug 2015 18:45:49 -0400
Subject: [PATCH] system: grub: Adjust eye-candy to work on non-Intel systems.

* gnu/system/grub.scm (eye-candy): Accept additional 'system' argument.  Add
  local 'intel?' variable.  Replace the 'load_video' grub function with
  'setup_gfxterm', which includes everything in the 'if loadfont' form on
  Intel systems, but is empty on non-Intel.
  (grub-configuration-file): Pass 'system' to 'eye-candy.
---
 gnu/system/grub.scm | 36 +++++++++++++++++++++++-------------
 1 file changed, 23 insertions(+), 13 deletions(-)

diff --git a/gnu/system/grub.scm b/gnu/system/grub.scm
index 1378f5f..4e095c5 100644
--- a/gnu/system/grub.scm
+++ b/gnu/system/grub.scm
@@ -167,10 +167,14 @@ WIDTH/HEIGHT, or #f if none was found."
         (with-monad %store-monad
           (return #f)))))
 
-(define (eye-candy config port)
+(define (eye-candy config system port)
   "Return in %STORE-MONAD a gexp that writes to PORT (a port-valued gexp) the
 'grub.cfg' part concerned with graphics mode, background images, colors, and
 all that."
+  (define intel? (or (string-prefix? "x86_64-" system)
+                     (string-prefix? "i686-" system)
+                     (string-prefix? "i586-" system)))
+
   (define (theme-colors type)
     (let* ((theme  (grub-configuration-theme config))
            (colors (type theme)))
@@ -178,22 +182,27 @@ all that."
                      (symbol->string (assoc-ref colors 'bg)))))
 
   (mlet* %store-monad ((image (grub-background-image config)))
-    (return (and image #~(format #$port "
-function load_video {
+    (return (and image
+                 #~(let ((setup-gfxterm-body
+                          (if #$intel?
+                              "
+  set gfxmode=640x480
   insmod vbe
   insmod vga
   insmod video_bochs
   insmod video_cirrus
-}
+  insmod gfxterm
+  terminal_output gfxterm
+"
+                              "")))
+                     (format #$port "
+function setup_gfxterm {~a}
 
 # Set 'root' to the partition that contains /gnu/store.
 search --file --set ~a/share/grub/unicode.pf2
 
 if loadfont ~a/share/grub/unicode.pf2; then
-  set gfxmode=640x480
-  load_video
-  insmod gfxterm
-  terminal_output gfxterm
+  setup_gfxterm
 fi
 
 insmod png
@@ -204,10 +213,11 @@ else
   set menu_color_normal=cyan/blue
   set menu_color_highlight=white/blue
 fi~%"
-                        #$grub #$grub
-                        #$image
-                        #$(theme-colors grub-theme-color-normal)
-                        #$(theme-colors grub-theme-color-highlight))))))
+                             setup-gfxterm-body
+                             #$grub #$grub
+                             #$image
+                             #$(theme-colors grub-theme-color-normal)
+                             #$(theme-colors grub-theme-color-highlight)))))))
 
 
 ;;;
@@ -244,7 +254,7 @@ entries corresponding to old generations of the system."
                 #$linux #$linux-image-name (string-join (list address@hidden))
                 #$initrd))))
 
-  (mlet %store-monad ((sugar (eye-candy config #~port)))
+  (mlet %store-monad ((sugar (eye-candy config system #~port)))
     (define builder
       #~(call-with-output-file #$output
           (lambda (port)
-- 
2.5.0


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