diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
index bce1094f6d..bb9e3374a0 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -125,7 +125,6 @@
 
 #define CONFIG_NR_DRAM_BANKS		1
 #define CONFIG_SYS_SDRAM_BASE		0
-#define CONFIG_SYS_SDRAM_SIZE		0x40000000
 
 #define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
 #define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_SDRAM_BASE + 0x1000)
diff --git a/include/configs/zynq_zc70x.h b/include/configs/zynq_zc70x.h
index 99108041ff..6950d41d41 100644
--- a/include/configs/zynq_zc70x.h
+++ b/include/configs/zynq_zc70x.h
@@ -10,6 +10,8 @@
 #ifndef __CONFIG_ZYNQ_ZC70X_H
 #define __CONFIG_ZYNQ_ZC70X_H
 
+#define CONFIG_SYS_SDRAM_SIZE		(1024 * 1024 * 1024)
+
 #define CONFIG_ZYNQ_SERIAL_UART1
 #define CONFIG_ZYNQ_GEM0
 #define CONFIG_ZYNQ_GEM_PHY_ADDR0	7
diff --git a/include/configs/zynq_zed.h b/include/configs/zynq_zed.h
index 278db1ef9b..31926df57c 100644
--- a/include/configs/zynq_zed.h
+++ b/include/configs/zynq_zed.h
@@ -10,6 +10,8 @@
 #ifndef __CONFIG_ZYNQ_ZED_H
 #define __CONFIG_ZYNQ_ZED_H
 
+#define CONFIG_SYS_SDRAM_SIZE		(512 * 1024 * 1024)
+
 #define CONFIG_ZYNQ_SERIAL_UART1
 #define CONFIG_ZYNQ_GEM0
 #define CONFIG_ZYNQ_GEM_PHY_ADDR0	0