From eb8c2f307e81223460157ddeddbdb66effb88201 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Sun, 20 Sep 2015 08:19:00 -0400
Subject: build/roms/withgrub_helper: Build extra dual-channel LVDS ROMs

---
diff --git a/resources/scripts/helpers/build/roms/withgrub_helper b/resources/scripts/helpers/build/roms/withgrub_helper
index 87aa214..74c56cd 100755
--- a/resources/scripts/helpers/build/roms/withgrub_helper
+++ b/resources/scripts/helpers/build/roms/withgrub_helper
@@ -74,6 +74,25 @@ do
 			fi
 	fi
 
+	# XXX: Warning: Atrocious kludge!  Drop when automatic LVDS second
+	# channel enablement is implemented in coreboot.
+	for lvds_channels in lvds1ch lvds2ch; do
+	if [ "x${lvds_channels}" = 'xlvds2ch' ]; then
+		case "${boardtarget}" in
+			[rt][45]00_*) ;;
+			*) continue;;
+		esac
+		mainboard_dir="$(sed -n \
+			's/^CONFIG_MAINBOARD_DIR="\(.*\)"$/\1/p' \
+			'config_txtmode')"
+		mv "src/mainboard/${mainboard_dir}/devicetree.cb" \
+			"src/mainboard/${mainboard_dir}/devicetree.cb.orig"
+		sed 's/\(register "gfx.lvds_dual_channel"\) = "0"/\1 = "1"/' \
+			"src/mainboard/${mainboard_dir}/devicetree.cb.orig" \
+			"src/mainboard/${mainboard_dir}/devicetree.cb"
+	fi
+	# XXX: End kludge.
+
 	# Build coreboot ROM image
 	make clean
 	mv "config_${romtype}" ".config"
@@ -110,10 +129,23 @@ do
 		./util/cbfstool/cbfstool "${boardtarget}_${keymap}_${romtype}.rom" add -f "grub_${keymap}_${romtype}.cfg" -n grub.cfg -t raw
 		# Insert grub test config into the image (for the user to test modifications to before modifying the main one)
 		./util/cbfstool/cbfstool "${boardtarget}_${keymap}_${romtype}.rom" add -f "grub_${keymap}_${romtype}_test.cfg" -n grubtest.cfg -t raw
+
+		# XXX: Warning: Atrocious kludge!  Drop when automatic LVDS
+		# second channel enablement is implemented in coreboot.
+		mv "${boardtarget}_${keymap}_${romtype}.rom" \
+			"${boardtarget}_${keymap}_${romtype}_${lvds_channels}.rom"
+		# XXX: End kludge.
 	done
 
 	# This config-less ROM is no longer needed
 	rm -f "${boardtarget}_${romtype}.rom"
+
+	# XXX: Warning: Atrocious kludge!  Drop when automatic LVDS second
+	# channel enablement is implemented in coreboot.
+	mv "src/mainboard/${mainboard_dir}/devicetree.cb.orig" \
+		"src/mainboard/${mainboard_dir}/devicetree.cb" \
+	done
+	# XXX: End kludge.
 done
 
 # Now we clean up and prepare the bin directory containing all the images
--
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