configs: tdx: Do not overwrite fdtfile if it got set manually

In case a customer wants to set fdtfile currently preboot overrides it
always with preboot just before the bootdelay. Use test -n to check
if fdtfile is already set and only set it if nothing got touched manually

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/configs/colibri-imx6ull-emmc_defconfig b/configs/colibri-imx6ull-emmc_defconfig
index 8c61617..b22a19b 100644
--- a/configs/colibri-imx6ull-emmc_defconfig
+++ b/configs/colibri-imx6ull-emmc_defconfig
@@ -16,7 +16,7 @@
 CONFIG_FIT_VERBOSE=y
 CONFIG_BOOTDELAY=1
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="setenv fdtfile imx6ull-colibri${variant}-${fdt_board}.dtb"
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile imx6ull-colibri${variant}-${fdt_board}.dtb"
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
diff --git a/configs/colibri-imx6ull_defconfig b/configs/colibri-imx6ull_defconfig
index 3ef7a6a..2fba7aa 100644
--- a/configs/colibri-imx6ull_defconfig
+++ b/configs/colibri-imx6ull_defconfig
@@ -18,7 +18,7 @@
 CONFIG_BOOTDELAY=1
 CONFIG_BOOTCOMMAND="run ubiboot || run distro_bootcmd;"
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="setenv fdtfile imx6ull-colibri${variant}-${fdt_board}.dtb"
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile imx6ull-colibri${variant}-${fdt_board}.dtb"
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
diff --git a/configs/colibri_imx7_defconfig b/configs/colibri_imx7_defconfig
index d2051a5..2f61223 100644
--- a/configs/colibri_imx7_defconfig
+++ b/configs/colibri_imx7_defconfig
@@ -18,7 +18,7 @@
 CONFIG_BOOTDELAY=1
 CONFIG_BOOTCOMMAND="run ubiboot ; echo ; echo ubiboot failed ; run distro_bootcmd;"
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="setenv fdtfile ${soc}-colibri-${fdt_board}.dtb "
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile ${soc}-colibri-${fdt_board}.dtb "
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
diff --git a/configs/colibri_imx7_emmc_defconfig b/configs/colibri_imx7_emmc_defconfig
index d0f6bf3..918585d 100644
--- a/configs/colibri_imx7_emmc_defconfig
+++ b/configs/colibri_imx7_emmc_defconfig
@@ -18,7 +18,7 @@
 CONFIG_FIT_VERBOSE=y
 CONFIG_BOOTDELAY=1
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="setenv fdtfile ${soc}-colibri-emmc-${fdt_board}.dtb"
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile ${soc}-colibri-emmc-${fdt_board}.dtb"
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
diff --git a/configs/colibri_vf_defconfig b/configs/colibri_vf_defconfig
index 8ce6e2b..c5f4322 100644
--- a/configs/colibri_vf_defconfig
+++ b/configs/colibri_vf_defconfig
@@ -20,7 +20,7 @@
 CONFIG_USE_BOOTCOMMAND=y
 CONFIG_BOOTCOMMAND="run ubiboot || run distro_bootcmd;"
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="setenv fdtfile ${soc}-colibri-${fdt_board}.dtb"
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile ${soc}-colibri-${fdt_board}.dtb"
 CONFIG_LOGLEVEL=3
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_DISPLAY_BOARDINFO_LATE=y
diff --git a/configs/verdin-imx8mm_defconfig b/configs/verdin-imx8mm_defconfig
index ce567b7..e6d9f37 100644
--- a/configs/verdin-imx8mm_defconfig
+++ b/configs/verdin-imx8mm_defconfig
@@ -27,7 +27,7 @@
 CONFIG_OF_SYSTEM_SETUP=y
 # CONFIG_USE_BOOTCOMMAND is not set
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="setenv fdtfile imx8mm-verdin-${variant}-${fdt_board}.dtb"
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile imx8mm-verdin-${variant}-${fdt_board}.dtb"
 CONFIG_LOG=y
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_DISPLAY_BOARDINFO_LATE=y
diff --git a/configs/verdin-imx8mp_defconfig b/configs/verdin-imx8mp_defconfig
index 44fcfa1..a74033c 100644
--- a/configs/verdin-imx8mp_defconfig
+++ b/configs/verdin-imx8mp_defconfig
@@ -34,7 +34,7 @@
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_BOOTDELAY=1
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="setenv fdtfile imx8mp-verdin-${variant}-${fdt_board}.dtb"
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile imx8mp-verdin-${variant}-${fdt_board}.dtb"
 CONFIG_LOG=y
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_DISPLAY_BOARDINFO_LATE=y