diff --git a/bmlutils/Android.mk b/bmlutils/Android.mk
index e95cb5f..6d9ab83 100644
--- a/bmlutils/Android.mk
+++ b/bmlutils/Android.mk
@@ -1,7 +1,15 @@
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
-LOCAL_CFLAGS += -DBOARD_BOOT_DEVICE=\"$(BOARD_BOOT_DEVICE)\"
+
+BOARD_RECOVERY_DEFINES := BOARD_BML_BOOT BOARD_BML_RECOVERY
+
+$(foreach board_define,$(BOARD_RECOVERY_DEFINES), \
+  $(if $($(board_define)), \
+    $(eval LOCAL_CFLAGS += -D$(board_define)=\"$($(board_define))\") \
+  ) \
+  )
+
 LOCAL_SRC_FILES := bmlutils.c
 LOCAL_MODULE := libbmlutils
 LOCAL_MODULE_TAGS := eng
diff --git a/bmlutils/bmlutils.c b/bmlutils/bmlutils.c
index 9ef04b4..db80501 100644
--- a/bmlutils/bmlutils.c
+++ b/bmlutils/bmlutils.c
@@ -23,6 +23,13 @@
 extern int __system(const char *command);
 #define BML_UNLOCK_ALL				0x8A29		///< unlock all partition RO -> RW
 
+#ifndef BOARD_BML_BOOT
+#define BOARD_BML_BOOT              "/dev/block/bml7"
+#endif
+
+#ifndef BOARD_BML_RECOVERY
+#define BOARD_BML_RECOVERY          "/dev/block/bml8"
+#endif
 
 static int restore_internal(const char* bml, const char* filename)
 {
@@ -66,13 +73,13 @@ int cmd_bml_restore_raw_partition(const char *partition, const char *filename)
         // always restore boot, regardless of whether recovery or boot is flashed.
         // this is because boot and recovery are the same on some samsung phones.
         // unless of course, recoveryonly is explictly chosen (bml8)
-        ret = restore_internal("/dev/block/bml7", filename);
+        ret = restore_internal(BOARD_BML_BOOT, filename);
         if (ret != 0)
             return ret;
     }
 
     if (strcmp(partition, "recovery") == 0 || strcmp(partition, "recoveryonly") == 0)
-        ret = restore_internal("/dev/block/bml8", filename);
+        ret = restore_internal(BOARD_BML_RECOVERY, filename);
     return ret;
 }
 
@@ -80,9 +87,9 @@ int cmd_bml_backup_raw_partition(const char *partition, const char *out_file)
 {
     char* bml;
     if (strcmp("boot", partition) == 0)
-        bml = "/dev/block/bml7";
+        bml = BOARD_BML_BOOT;
     else if (strcmp("recovery", partition) == 0)
-        bml = "/dev/block/bml8";
+        bml = BOARD_BML_RECOVERY;
     else {
         printf("Invalid partition.\n");
         return -1;
diff --git a/flashutils/Android.mk b/flashutils/Android.mk
index d513275..aa4c7d3 100644
--- a/flashutils/Android.mk
+++ b/flashutils/Android.mk
@@ -9,6 +9,15 @@ LOCAL_MODULE := libflashutils
 LOCAL_MODULE_TAGS := eng
 LOCAL_C_INCLUDES += bootable/recovery
 LOCAL_STATIC_LIBRARIES := libmmcutils libmtdutils libbmlutils libcrecovery
+
+BOARD_RECOVERY_DEFINES := BOARD_BML_BOOT BOARD_BML_RECOVERY
+
+$(foreach board_define,$(BOARD_RECOVERY_DEFINES), \
+  $(if $($(board_define)), \
+    $(eval LOCAL_CFLAGS += -D$(board_define)=\"$($(board_define))\") \
+  ) \
+  )
+
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
diff --git a/flashutils/flashutils.c b/flashutils/flashutils.c
index 958476c..de45e87 100644
--- a/flashutils/flashutils.c
+++ b/flashutils/flashutils.c
@@ -6,12 +6,20 @@
 
 #include "flashutils/flashutils.h"
 
+#ifndef BOARD_BML_BOOT
+#define BOARD_BML_BOOT              "/dev/block/bml7"
+#endif
+
+#ifndef BOARD_BML_RECOVERY
+#define BOARD_BML_RECOVERY          "/dev/block/bml8"
+#endif
+
 int the_flash_type = UNKNOWN;
 
 int device_flash_type()
 {
     if (the_flash_type == UNKNOWN) {
-        if (access("/dev/block/bml7", F_OK) == 0) {
+        if (access(BOARD_BML_BOOT, F_OK) == 0) {
             the_flash_type = BML;
         } else if (access("/proc/emmc", F_OK) == 0) {
             the_flash_type = MMC;