istoreos: supports ventoy boot

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

@@ -249,6 +249,13 @@ export_partdevice() {
 		if [ -b "/dev/$part" ]; then
 			export "$var=$part"
 			return 0
+		else
+			# ventoy
+			local devpath="`readlink /sys/dev/block/$BOOTDEV_MAJOR:$(($BOOTDEV_MINOR + $offset))`"
+			[ -n "$devpath" ] && {
+				export "$var=${devpath##*/}"
+				return 0
+			}
 		fi
 	fi
 

package/kernel/linux/modules/block.mk

@@ -205,10 +205,15 @@ $(eval $(call KernelPackage,block2mtd))
 define KernelPackage/dax
   SUBMENU:=$(BLOCK_MENU)
   TITLE:=DAX: direct access to differentiated memory
-  KCONFIG:=CONFIG_DAX
+  KCONFIG:=CONFIG_DAX=y
   FILES:=$(LINUX_DIR)/drivers/dax/dax.ko
 endef
 
+define KernelPackage/dax/install
+	$(INSTALL_DIR) $(1)/lib/modules/!ventoy
+	echo "DUMMY" >$(1)/lib/modules/!ventoy/dax.ko
+endef
+
 $(eval $(call KernelPackage,dax))
 
 
@@ -231,7 +236,8 @@ define KernelPackage/dm
 	CONFIG_DM_SNAPSHOT=n \
 	CONFIG_DM_LOG_USERSPACE=n \
 	CONFIG_MD=y \
-	CONFIG_BLK_DEV_DM \
+	CONFIG_BLK_DEV_DM=y \
+	CONFIG_DM_INIT=y \
 	CONFIG_DM_CRYPT \
 	CONFIG_DM_MIRROR
   FILES:= \
@@ -247,6 +253,11 @@ define KernelPackage/dm/description
  Kernel module necessary for LVM2 support
 endef
 
+define KernelPackage/dm/install
+	$(INSTALL_DIR) $(1)/lib/modules/!ventoy
+	echo "DUMMY" >$(1)/lib/modules/!ventoy/dm-mod.ko
+endef
+
 $(eval $(call KernelPackage,dm))
 
 define KernelPackage/dm-raid

target/linux/x86/base-files/lib/upgrade/platform.sh

@@ -2,7 +2,7 @@
 # 1. keep overlay partition when upgrade
 # 2. reset rom uuid in ext_overlay (aka sandbox mode) when upgrade (stage2:istoreos_pre_upgrade)
 
-RAMFS_COPY_BIN='grub-bios-setup'
+RAMFS_COPY_BIN='grub-bios-setup readlink'
 
 platform_check_image() {
 	local diskdev partdev diff