-AFLAGS_omap-headsmp.o :=-Wa,-march=armv7-a
-AFLAGS_omap44xx-smc.o :=-Wa,-march=armv7-a
+plus_sec := $(call as-instr,.arch_extension sec,+sec)
+AFLAGS_omap-headsmp.o :=-Wa,-march=armv7-a$(plus_sec)
+AFLAGS_omap44xx-smc.o :=-Wa,-march=armv7-a$(plus_sec)