diff --git a/configs/pcduino-a10/nsh/defconfig b/configs/pcduino-a10/nsh/defconfig
index 38214a4462..7cb75639b3 100644
--- a/configs/pcduino-a10/nsh/defconfig
+++ b/configs/pcduino-a10/nsh/defconfig
@@ -233,9 +233,9 @@ CONFIG_BOOT_RUNFROMSDRAM=y
 #
 # Boot Memory Configuration
 #
-CONFIG_RAM_START=0x40000000
-CONFIG_RAM_VSTART=0x40000000
-CONFIG_RAM_SIZE=268435456
+CONFIG_RAM_START=0x4a000000
+CONFIG_RAM_VSTART=0x4a000000
+CONFIG_RAM_SIZE=905969664
 
 #
 # Board Selection