diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
index 2588c5a..b7110ed 100644
--- a/include/configs/qemu-riscv.h
+++ b/include/configs/qemu-riscv.h
@@ -15,7 +15,7 @@
 
 #define CONFIG_SYS_MALLOC_LEN		SZ_8M
 
-#define CONFIG_SYS_BOOTM_LEN		SZ_16M
+#define CONFIG_SYS_BOOTM_LEN		SZ_64M
 
 #define CONFIG_STANDALONE_LOAD_ADDR	0x80200000
 
@@ -41,11 +41,15 @@
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"fdt_high=0xffffffffffffffff\0" \
 	"initrd_high=0xffffffffffffffff\0" \
-	"kernel_addr_r=0x81000000\0" \
-	"fdt_addr_r=0x82000000\0" \
-	"scriptaddr=0x82100000\0" \
-	"pxefile_addr_r=0x82200000\0" \
-	"ramdisk_addr_r=0x82300000\0" \
+	"kernel_addr_r=0x84000000\0" \
+	"fdt_addr_r=0x88000000\0" \
+	"scriptaddr=0x88100000\0" \
+	"pxefile_addr_r=0x88200000\0" \
+	"ramdisk_addr_r=0x88300000\0" \
 	BOOTENV
 
+#define CONFIG_PREBOOT \
+	"setenv fdt_addr ${fdtcontroladdr};" \
+	"fdt addr ${fdtcontroladdr};"
+
 #endif /* __CONFIG_H */