diff --git a/src/soc/amd/common/block/smi/smi_util.c b/src/soc/amd/common/block/smi/smi_util.c
index 1e4561d7a5..e3379f35fd 100644
--- a/src/soc/amd/common/block/smi/smi_util.c
+++ b/src/soc/amd/common/block/smi/smi_util.c
@@ -65,6 +65,13 @@ void global_smi_enable(void)
 	smi_write32(SMI_REG_SMITRIG0, reg);
 }
 
+void southbridge_smi_set_eos(void)
+{
+	uint32_t reg = smi_read32(SMI_REG_SMITRIG0);
+	reg |= SMITRG0_EOS;
+	smi_write32(SMI_REG_SMITRIG0, reg);
+}
+
 void soc_route_sci(uint8_t event)
 {
 	smi_write8(SMI_SCI_MAP(event), event);
diff --git a/src/soc/amd/picasso/smihandler.c b/src/soc/amd/picasso/smihandler.c
index 4931de82b7..faf4f7b263 100644
--- a/src/soc/amd/picasso/smihandler.c
+++ b/src/soc/amd/picasso/smihandler.c
@@ -293,10 +293,3 @@ void southbridge_smi_handler(void)
 	if (smi_src & SMI_STATUS_SRC_4)
 		process_smi_sources(SMI_REG_SMISTS4);
 }
-
-void southbridge_smi_set_eos(void)
-{
-	uint32_t reg = smi_read32(SMI_REG_SMITRIG0);
-	reg |= SMITRG0_EOS;
-	smi_write32(SMI_REG_SMITRIG0, reg);
-}
diff --git a/src/soc/amd/stoneyridge/smihandler.c b/src/soc/amd/stoneyridge/smihandler.c
index c8a113c576..45dd07d5af 100644
--- a/src/soc/amd/stoneyridge/smihandler.c
+++ b/src/soc/amd/stoneyridge/smihandler.c
@@ -288,10 +288,3 @@ void southbridge_smi_handler(void)
 	if (smi_src & SMI_STATUS_SRC_4)
 		process_smi_sources(SMI_REG_SMISTS4);
 }
-
-void southbridge_smi_set_eos(void)
-{
-	uint32_t reg = smi_read32(SMI_REG_SMITRIG0);
-	reg |= SMITRG0_EOS;
-	smi_write32(SMI_REG_SMITRIG0, reg);
-}