enable generate EFI+GPT grub2 ext4 images for x86/x64 platforms

config/Config-images.in

@@ -184,22 +184,31 @@ menu "Target Images"
 		depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_ISO || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
 		select PACKAGE_grub2
 		default y
+
+	config EFI_IMAGES
+		bool "Build EFI GRUB images (Linux x86 or x86_64 host only)"
+		depends on TARGET_x86
+		depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_ISO || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
+		select PACKAGE_grub2
+		select PACKAGE_grub2-efi
+		default n
+
 
 	config GRUB_CONSOLE
 		bool "Use Console Terminal (in addition to Serial)"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		default n if (TARGET_x86_generic_Soekris45xx || TARGET_x86_generic_Soekris48xx || TARGET_x86_net5501 || TARGET_x86_geos || TARGET_x86_alix2)
 		default y
 
 	config GRUB_SERIAL
 		string "Serial port device"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		default "hvc0" if TARGET_x86_xen_domu
 		default "ttyS0" if ! TARGET_x86_xen_domu
 
 	config GRUB_BAUDRATE
 		int "Serial port baud rate"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		default 38400 if TARGET_x86_generic
 		default 115200
 
@@ -210,36 +219,36 @@ menu "Target Images"
 
 	config GRUB_BOOTOPTS
 		string "Extra kernel boot options"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		default "xencons=hvc" if TARGET_x86_xen_domu
 		help
 		  If you don't know, just leave it blank.
 
 	config GRUB_TIMEOUT
 		string "Seconds to wait before booting the default entry"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		default "0"
 		help
 		  If you don't know, 5 seconds is a reasonable default.
 
 	config VDI_IMAGES
 		bool "Build VirtualBox image files (VDI)"
 		depends on TARGET_x86 || TARGET_x86_64
-		select GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		select TARGET_IMAGES_PAD
 		select PACKAGE_kmod-e1000
 
 	config VMDK_IMAGES
 		bool "Build VMware image files (VMDK)"
 		depends on TARGET_x86 || TARGET_x86_64
-		select GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		select TARGET_IMAGES_PAD
 		select PACKAGE_kmod-e1000
 		default y
 
 	config TARGET_IMAGES_PAD
 		bool "Pad images to filesystem size (for JFFS2)"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 
 	config TARGET_IMAGES_GZIP
 		bool "GZip images"
@@ -252,19 +261,19 @@ menu "Target Images"
 
 	config TARGET_KERNEL_PARTSIZE
 		int "Kernel partition size (in MB)"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		default 8
 
 	config TARGET_ROOTFS_PARTSIZE
 		int "Root filesystem partition size (in MB)"
-		depends on GRUB_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532 || TARGET_mvebu || TARGET_uml
+		depends on GRUB_IMAGES || EFI_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532 || TARGET_mvebu || TARGET_uml
 		default 96
 		help
 		  Select the root filesystem partition size.
 
 	config TARGET_ROOTFS_PARTNAME
 		string "Root partition on target device"
-		depends on GRUB_IMAGES
+		depends on GRUB_IMAGES || EFI_IMAGES
 		help
 		  Override the root partition on the final device. If left empty,
 		  it will be mounted by PARTUUID which makes the kernel find the

package/base-files/files/lib/upgrade/common.sh

@@ -117,6 +117,24 @@ export_bootdevice() {
 		esac
 
 		case "$disk" in
+			PARTUUID=[A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9]-[A-F0-9][A-F0-9][A-F0-9][A-F0-9]-[A-F0-9][A-F0-9][A-F0-9][A-F0-9]-[A-F0-9][A-F0-9][A-F0-9][A-F0-9]-[A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9][A-F0-9]0002)
+				uuid="${disk#PARTUUID=}"
+				uuid="${uuid%0002}0002"
+				for disk in $(find /dev -type b); do
+					set -- $(dd if=$disk bs=1 skip=$((2*512+256+128+16)) count=16 2>/dev/null | hexdump -v -e '4/1 "%02x"' | awk '{ \
+							for(i=1;i<9;i=i+2) first=substr($0,i,1) substr($0,i+1,1) first; \
+							for(i=9;i<13;i=i+2) second=substr($0,i,1) substr($0,i+1,1) second; \
+							for(i=13;i<16;i=i+2) third=substr($0,i,1) substr($0,i+1,1) third; \
+							fourth = substr($0,17,4); \
+							five = substr($0,21,12); \
+						} END { print toupper(first"-"second"-"third"-"fourth"-"five) }')
+					if [ "$1" = "$uuid" ]; then
+						uevent="/sys/class/block/${disk##*/}/uevent"
+						export SAVE_PARTITIONS=0
+						break
+					fi
+				done
+;;
 			PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-02)
 				uuid="${disk#PARTUUID=}"
 				uuid="${uuid%-02}"

package/boot/grub2/Makefile → package/boot/grub2/common.mk

@@ -1,53 +1,31 @@
-#
-# Copyright (C) 2006-2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-include $(INCLUDE_DIR)/kernel.mk
-
-PKG_NAME:=grub
 PKG_VERSION:=2.02
 PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+PKG_SOURCE:=grub-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/grub
 PKG_HASH:=810b3798d316394f94096ec2797909dbf23c858e48f7b3830826b8daa06b7b0f
 
 PKG_FIXUP:=autoreconf
 HOST_BUILD_PARALLEL:=1
-PKG_BUILD_DEPENDS:=grub2/host
 
 PKG_SSP:=0
 
 PKG_FLAGS:=nonshared
 
+PATCH_DIR := ../patches
+HOST_PATCH_DIR := ../patches
+
 include $(INCLUDE_DIR)/host-build.mk
 include $(INCLUDE_DIR)/package.mk
 
-define Package/grub2
+define Package/grub2/Default
   CATEGORY:=Boot Loaders
   SECTION:=boot
   TITLE:=GRand Unified Bootloader
   URL:=http://www.gnu.org/software/grub/
   DEPENDS:=@TARGET_x86||TARGET_x86_64
 endef
 
-define Package/grub2-editenv
-  CATEGORY:=Utilities
-  SECTION:=utils
-  SUBMENU:=Boot Loaders
-  TITLE:=Grub2 Environment editor
-  URL:=http://www.gnu.org/software/grub/
-  DEPENDS:=@TARGET_x86||TARGET_x86_64
-endef
-
-define Package/grub2-editenv/description
-	Edit grub2 environment files.
-endef
-
 HOST_BUILD_PREFIX := $(STAGING_DIR_HOST)
 
 CONFIGURE_VARS += \
@@ -81,11 +59,3 @@ define Host/Configure
 	$(Host/Configure/Default)
 endef
 
-define Package/grub2-editenv/install
-	$(INSTALL_DIR) $(1)/usr/sbin
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/grub-editenv $(1)/usr/sbin/
-endef
-
-$(eval $(call HostBuild))
-$(eval $(call BuildPackage,grub2))
-$(eval $(call BuildPackage,grub2-editenv))

package/boot/grub2/grub2-efi/Makefile

@@ -0,0 +1,22 @@
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=grub-efi
+
+include ../common.mk
+
+TAR_OPTIONS:= --transform 's/grub-${PKG_VERSION}/${PKG_NAME}-${PKG_VERSION}/' $(TAR_OPTIONS)
+
+PKG_BUILD_DEPENDS:=grub2-efi/host
+
+CONFIGURE_ARGS += --with-platform=efi
+HOST_CONFIGURE_ARGS += --with-platform=efi --program-suffix=-efi
+
+define Package/grub2-efi
+$(call Package/grub2/Default)
+HIDDEN:=1
+TITLE += (with EFI support)
+endef
+
+$(eval $(call HostBuild))
+$(eval $(call BuildPackage,grub2-efi))

package/boot/grub2/grub2/Makefile

@@ -0,0 +1,33 @@
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=grub
+
+include ../common.mk
+
+PKG_BUILD_DEPENDS:=grub2/host
+
+define Package/grub2
+$(call Package/grub2/Default)
+endef
+
+define Package/grub2-editenv
+  CATEGORY:=Utilities
+  SECTION:=utils
+  TITLE:=Grub2 Environment editor
+  URL:=http://www.gnu.org/software/grub/
+  DEPENDS:=@TARGET_x86||TARGET_x86_64
+endef
+
+define Package/grub2-editenv/description
+	Edit grub2 environment files.
+endef
+
+define Package/grub2-editenv/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/grub-editenv $(1)/usr/sbin/
+endef
+
+$(eval $(call HostBuild))
+$(eval $(call BuildPackage,grub2))
+$(eval $(call BuildPackage,grub2-editenv))