diff --git a/board/zynqmp/extlinux.conf b/board/zynqmp/extlinux.conf
deleted file mode 100644
index ae3ec8614a..0000000000
--- a/board/zynqmp/extlinux.conf
+++ /dev/null
@@ -1,5 +0,0 @@
-label linux
-  kernel /Image
-  devicetree /system.dtb
-  append console=ttyPS0,115200 root=/dev/mmcblk0p2 rw rootwait
-
diff --git a/configs/zynqmp_zcu102_defconfig b/configs/zynqmp_zcu102_defconfig
index 5361981f5b..217fa0814b 100644
--- a/configs/zynqmp_zcu102_defconfig
+++ b/configs/zynqmp_zcu102_defconfig
@@ -2,6 +2,7 @@ BR2_aarch64=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/zynqmp/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/zynqmp/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="ttyPS0,115200 mmcblk0p2"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,Xilinx,linux-xlnx,xlnx_rebase_v5.15_LTS_2022.1)/xlnx_rebase_v5.15_LTS_2022.1.tar.gz"
diff --git a/configs/zynqmp_zcu106_defconfig b/configs/zynqmp_zcu106_defconfig
index e1ea27a496..3d98dffe01 100644
--- a/configs/zynqmp_zcu106_defconfig
+++ b/configs/zynqmp_zcu106_defconfig
@@ -2,6 +2,7 @@ BR2_aarch64=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/zynqmp/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/zynqmp/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="ttyPS0,115200 mmcblk0p2"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,Xilinx,linux-xlnx,xlnx_rebase_v5.15_LTS_2022.1)/xlnx_rebase_v5.15_LTS_2022.1.tar.gz"