x86: Parametize values used in linker script
diff --git a/arch/i386/config.mk b/arch/i386/config.mk
index fc6a313..a84af63 100644
--- a/arch/i386/config.mk
+++ b/arch/i386/config.mk
@@ -32,6 +32,7 @@
 PLATFORM_CPPFLAGS += $(call cc-option, -fno-stack-protector)
 PLATFORM_CPPFLAGS += $(call cc-option, -mpreferred-stack-boundary=2)
 PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
+PLATFORM_CPPFLAGS += -DREALMODE_BASE=0x7c0
 
 PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden