diff --git a/configs/ph1_ld4_defconfig b/configs/ph1_ld4_defconfig
index 74e759a578..61eb037bc2 100644
--- a/configs/ph1_ld4_defconfig
+++ b/configs/ph1_ld4_defconfig
@@ -1,5 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_UNIPHIER=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_MACH_PH1_LD4=y
 CONFIG_PFC_MICRO_SUPPORT_CARD=y
 CONFIG_SYS_TEXT_BASE=0x84000000
diff --git a/configs/ph1_pro4_defconfig b/configs/ph1_pro4_defconfig
index 714339acf3..7582fdf91b 100644
--- a/configs/ph1_pro4_defconfig
+++ b/configs/ph1_pro4_defconfig
@@ -1,5 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_UNIPHIER=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_PFC_MICRO_SUPPORT_CARD=y
 CONFIG_SYS_TEXT_BASE=0x84000000
 CONFIG_DEFAULT_DEVICE_TREE="uniphier-ph1-pro4-ref"
diff --git a/configs/ph1_sld8_defconfig b/configs/ph1_sld8_defconfig
index df0e0051ac..236e6739a4 100644
--- a/configs/ph1_sld8_defconfig
+++ b/configs/ph1_sld8_defconfig
@@ -1,5 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_UNIPHIER=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_MACH_PH1_SLD8=y
 CONFIG_PFC_MICRO_SUPPORT_CARD=y
 CONFIG_SYS_TEXT_BASE=0x84000000