diff --git a/bsp/xuantie/smartl/e902/Kconfig b/bsp/xuantie/smartl/e902/Kconfig
index 8680668cf0b..9474632ffc0 100644
--- a/bsp/xuantie/smartl/e902/Kconfig
+++ b/bsp/xuantie/smartl/e902/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
 config XUANTIAN_SMARTL_E902
     bool
@@ -30,6 +13,6 @@ config XUANTIAN_SMARTL_E902
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/smartl/e906/Kconfig b/bsp/xuantie/smartl/e906/Kconfig
index 8fe8e876e98..feecd060a2e 100644
--- a/bsp/xuantie/smartl/e906/Kconfig
+++ b/bsp/xuantie/smartl/e906/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
 config XUANTIAN_SMARTL_E906
     bool
@@ -30,6 +13,6 @@ config XUANTIAN_SMARTL_E906
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/smartl/e907/Kconfig b/bsp/xuantie/smartl/e907/Kconfig
index a7754dca2ea..3ed73c88943 100644
--- a/bsp/xuantie/smartl/e907/Kconfig
+++ b/bsp/xuantie/smartl/e907/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
 config XUANTIAN_SMARTL_E907
     bool
@@ -30,6 +13,6 @@ config XUANTIAN_SMARTL_E907
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/xiaohui/c906/Kconfig b/bsp/xuantie/xiaohui/c906/Kconfig
index e6554754234..593b1723066 100644
--- a/bsp/xuantie/xiaohui/c906/Kconfig
+++ b/bsp/xuantie/xiaohui/c906/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
  config XUANTIAN_XIAOHUI_C906
     bool
@@ -30,6 +13,6 @@ config ENV_DIR
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/xiaohui/c907/Kconfig b/bsp/xuantie/xiaohui/c907/Kconfig
index 7986b1ff299..0fc0c1d78fc 100644
--- a/bsp/xuantie/xiaohui/c907/Kconfig
+++ b/bsp/xuantie/xiaohui/c907/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
  config XUANTIAN_XIAOHUI_C907
     bool
@@ -30,6 +13,6 @@ config ENV_DIR
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/xiaohui/c908/Kconfig b/bsp/xuantie/xiaohui/c908/Kconfig
index 99c62ff7dab..bdff90abde5 100644
--- a/bsp/xuantie/xiaohui/c908/Kconfig
+++ b/bsp/xuantie/xiaohui/c908/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
  config XUANTIAN_XIAOHUI_C908
     bool
@@ -30,6 +13,6 @@ config ENV_DIR
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/xiaohui/c910/Kconfig b/bsp/xuantie/xiaohui/c910/Kconfig
index 6b85ddc4492..29cb077c2a0 100644
--- a/bsp/xuantie/xiaohui/c910/Kconfig
+++ b/bsp/xuantie/xiaohui/c910/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
  config XUANTIAN_XIAOHUI_C910
     bool
@@ -30,6 +13,6 @@ config ENV_DIR
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/xiaohui/r908/Kconfig b/bsp/xuantie/xiaohui/r908/Kconfig
index 41a6fba7cb7..4527cb43262 100644
--- a/bsp/xuantie/xiaohui/r908/Kconfig
+++ b/bsp/xuantie/xiaohui/r908/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
  config XUANTIAN_XIAOHUI_R908
     bool
@@ -30,6 +13,6 @@ config ENV_DIR
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/xiaohui/r910/Kconfig b/bsp/xuantie/xiaohui/r910/Kconfig
index 6f263e0019a..88d47ae1f86 100644
--- a/bsp/xuantie/xiaohui/r910/Kconfig
+++ b/bsp/xuantie/xiaohui/r910/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
  config XUANTIAN_XIAOHUI_R910
     bool
@@ -30,6 +13,6 @@ config ENV_DIR
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"
diff --git a/bsp/xuantie/xiaohui/r920/Kconfig b/bsp/xuantie/xiaohui/r920/Kconfig
index 7464b3e434e..6ccc0d96c09 100644
--- a/bsp/xuantie/xiaohui/r920/Kconfig
+++ b/bsp/xuantie/xiaohui/r920/Kconfig
@@ -1,27 +1,10 @@
 mainmenu "RT-Thread Configuration"
 
-config BSP_DIR
-    string
-    option env="BSP_ROOT"
-    default "."
+BSP_DIR := .
 
-config RTT_DIR
-    string
-    option env="RTT_ROOT"
-    default "rt-thread"
+RTT_DIR := ../../../../
 
-# you can change the RTT_ROOT default "rt-thread"
-# example : default "F:/git_repositories/rt-thread"
-
-config PKGS_DIR
-    string
-    option env="PKGS_ROOT"
-    default "packages"
-
-config ENV_DIR
-    string
-    option env="ENV_ROOT"
-    default "/"
+PKGS_DIR := packages
 
  config XUANTIAN_XIAOHUI_R920
     bool
@@ -30,6 +13,6 @@ config ENV_DIR
     select RT_USING_USER_MAIN
     default y
 
-source "$RTT_DIR/Kconfig"
+source "$(RTT_DIR)/Kconfig"
 source "$PKGS_DIR/Kconfig"
 source "$BSP_DIR/board/Kconfig"