diff --git a/core/combo/arch/x86/silvermont.mk b/core/combo/arch/x86/silvermont.mk
new file mode 100644
index 0000000..3a8718d
--- /dev/null
+++ b/core/combo/arch/x86/silvermont.mk
@@ -0,0 +1,20 @@
+# This file contains feature macro definitions specific to the
+# silvermont arch variant.
+#
+# See build/core/combo/arch/x86/x86-atom.mk for differences.
+#
+
+ARCH_X86_HAVE_SSSE3  := true
+ARCH_X86_HAVE_SSE4   := true
+ARCH_X86_HAVE_SSE4_1 := true
+ARCH_X86_HAVE_SSE4_2 := true
+ARCH_X86_HAVE_AES_NI := true
+ARCH_X86_HAVE_POPCNT := true
+ARCH_X86_HAVE_MOVBE  := true
+
+# CFLAGS for this arch
+arch_variant_cflags := \
+	-march=slm \
+	-mstackrealign \
+	-mfpmath=sse \
+
diff --git a/core/combo/arch/x86_64/silvermont.mk b/core/combo/arch/x86_64/silvermont.mk
new file mode 100644
index 0000000..6c953a3
--- /dev/null
+++ b/core/combo/arch/x86_64/silvermont.mk
@@ -0,0 +1,17 @@
+# This file contains feature macro definitions specific to the
+# silvermont arch variant.
+#
+# See build/core/combo/arch/x86/x86-atom.mk for differences.
+#
+
+ARCH_X86_HAVE_SSSE3  := true
+ARCH_X86_HAVE_SSE4   := true
+ARCH_X86_HAVE_SSE4_1 := true
+ARCH_X86_HAVE_SSE4_2 := true
+ARCH_X86_HAVE_AES_NI := true
+ARCH_X86_HAVE_POPCNT := true
+ARCH_X86_HAVE_MOVBE  := true
+
+# CFLAGS for this arch
+arch_variant_cflags := \
+	-march=slm \