diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/gpio.c b/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/gpio.c
index 9f1c77f..4919ac7 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/gpio.c
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/gpio.c
@@ -118,6 +118,7 @@
 
 /* Early pad configuration in bootblock */
 static const struct pad_config early_gpio_table[] = {
+	PAD_CFG_GPI(GPP_B5, NONE, DEEP),		/* DRAM population */
 	PAD_CFG_NF(GPP_C0, NONE, DEEP, NF1),		/* SMB_CLK */
 	PAD_CFG_NF(GPP_C1, NONE, DEEP, NF1),		/* SMB_DATA */
 	PAD_CFG_NF(GPP_C2, NONE, DEEP, NF2),		/* SMB_ALERT_N */
diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c b/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c
index 7b7dad1..dc0f073 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl4/memory.c
@@ -57,3 +57,11 @@
 {
 	return &mc_ehl_lpddr4x_memcfg_cfg;
 }
+
+bool half_populated(void)
+{
+	/* There are two different memory expansion variants of this mainboard.
+	   The GPIO GPP_B5 indicates whether the mainboard is equipped with half- or
+	   full-populated DRAM. */
+	return gpio_get(GPP_B5);
+}