1 files changed, 6 insertions, 0 deletions
diff --git a/config.mk b/config.mk
index 8852157..02d204a 100644
--- a/config.mk
+++ b/config.mk
@@ -124,6 +124,12 @@ gccincdir := $(shell $(CC) -print-file-name=include)
 
 CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS)		\
 	-D__KERNEL__
+
+ifneq ($(BOOT_MEDIA),)
+	BOOT_MEDIA_MACRO = BOOT_MEDIA_$(shell echo $(BOOT_MEDIA) | tr '[a-z]' '[A-Z]')
+	CPPFLAGS += -D$(BOOT_MEDIA_MACRO)
+endif
+
 ifneq ($(TEXT_BASE),)
 CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
 endif