grub: added gfxmode support

features.in/grub/cfg.in/01gfxterm.cfg

+function load_video {
+  if [ x$feature_all_video_module = xy ]; then
+    insmod all_video
+  else
+    insmod efi_gop
+    insmod efi_uga
+    insmod ieee1275_fb
+    insmod vbe
+    insmod vga
+    insmod video_bochs
+    insmod video_cirrus
+  fi
+}
+
+font=${prefix}/fonts/unicode.pf2
+if loadfont "$font" ; then
+  set gfxmode=auto
+  load_video
+  insmod gfxterm
+  terminal_output gfxterm
+  if [ -d ${prefix}/locale ]; then
+    set locale_dir=${prefix}/locale
+    insmod gettext
+  fi
+  insmod gfxmenu
+  insmod jpeg
+  insmod png
+  if [ -f ${prefix}/themes/@grubtheme@/theme.txt ]; then
+    set theme=${prefix}/themes/@grubtheme@/theme.txt;
+    export theme
+  fi
+  set timeout_style=menu
+  set menu_color_normal=white/black
+  set menu_color_highlight=black/white
+  set color_normal=white/black
+  set color_highlight=black/white
+fi

features.in/grub/config.mk

@@ -16,17 +16,12 @@ use/grub: ; @:
 
 endif
 
-ifeq (,$(filter-out i586 x86_64,$(ARCH)))
 # UI is overwritten
 use/grub/ui/%: use/grub
 	@$(call set,GRUB_UI,$*)
 	@if [ "$*" == gfxboot ]; then \
-		$(call add,STAGE1_PACKAGES,gfxboot); \
 		$(call add,STAGE1_BRANDING,bootloader); \
 	fi
-else
-use/grub/ui/%: use/grub; @:
-endif
 
 use/grub/%.cfg: use/grub
 	@$(call add,GRUB_CFG,$*)

features.in/grub/generate.mk

@@ -19,6 +19,10 @@ ifndef GRUB_DIRECT
 GRUB_CFG := $(GRUB_CFG) $(SUBPROFILE_DIRS) defaults fwsetup_efi
 endif
 
+ifdef GRUB_UI
+GRUB_CFG := $(GRUB_CFG) gfxterm
+endif
+
 ifdef LOCALE
 GRUB_CFG := $(GRUB_CFG) lang
 endif
@@ -94,6 +98,8 @@ bootargs: clean
 	@if [ $$(echo $(KFLAVOURS) | wc -w) -gt 1 ]; then \
 		sed -i "s,@KFLAVOUR@,$(KFLAVOURS),g" $(DSTCFGS); \
 	fi
+	GRUBTHEME=$$(cut -d "-" -f2 <<< $(BRANDING)); \
+	sed -i "s,@grubtheme@,$$GRUBTHEME,g" $(DSTCFGS); \
 
 clean: copy
 	@if [ "$(GRUB_UI)" = gfxboot ]; then \