diff --git a/package/Makefile.in b/package/Makefile.in
index dae7a859..24089a4a 100644
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -168,6 +168,7 @@ TARGET_HARDENED += -D_FORTIFY_SOURCE=2
 endif
 
 TARGET_CPPFLAGS += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
+TARGET_CPPFLAGS += -mabi=lp64d -march=rv64imafdc_zicsr_zifencei_zba_zbb -mcpu=sifive-u74 -mtune=sifive-7-series -fomit-frame-pointer --param l1-cache-size=32 --param l2-cache-size=2048
 TARGET_CFLAGS = $(TARGET_CPPFLAGS) $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING) $(TARGET_HARDENED)
 TARGET_CXXFLAGS = $(TARGET_CFLAGS)
 TARGET_FCFLAGS = $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)