board/kontron/pitx-imx8m: use extlinux instead of U-Boot boot script

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/kontron/pitx-imx8m/boot.cmd

@@ -1,8 +0,0 @@
-echo "Root File Sytem on MMC${devnum}"
-setenv rootfs /dev/mmcblk${devnum}p1
-setenv bootargs root=${rootfs} rootwait rw ${extrabootargs}
-
-load ${devtype} ${devnum} ${kernel_addr_r} boot/Image
-load ${devtype} ${devnum} ${fdt_addr_r} boot/imx8mq-kontron-pitx-imx8m.dtb
-
-booti ${kernel_addr_r} - ${fdt_addr_r}

board/kontron/pitx-imx8m/extlinux.conf

@@ -0,0 +1,4 @@
+label buildroot
+  kernel /boot/Image
+  devicetree /boot/freescale/imx8mq-kontron-pitx-imx8m.dtb
+  append root=PARTUUID=%PARTUUID% rootwait rw

board/kontron/pitx-imx8m/genimage.cfg

@@ -1,5 +1,6 @@
 image sdcard.img {
 	hdimage {
+		partition-table-type = "gpt"
 	}
 
 	partition imx-boot {
@@ -9,8 +10,8 @@ image sdcard.img {
 	}
 
 	partition rootfs {
-		partition-type = 0x83
-		image = "rootfs.ext4"
 		offset = 8M
+		image = "rootfs.ext4"
+		partition-uuid = %PARTUUID%
 	}
 }

board/kontron/pitx-imx8m/post-build.sh

@@ -1,4 +1,7 @@
 #!/bin/sh
+BOARD_DIR="$(dirname $0)"
+PARTUUID="$($HOST_DIR/bin/uuidgen)"
 
-mkdir -p $TARGET_DIR/boot/
-cp $BINARIES_DIR/boot.scr $TARGET_DIR/boot/boot.scr
+install -d "$TARGET_DIR/boot/extlinux/"
+sed "s/%PARTUUID%/$PARTUUID/g" "$BOARD_DIR/extlinux.conf" > "$TARGET_DIR/boot/extlinux/extlinux.conf"
+sed "s/%PARTUUID%/$PARTUUID/g" "$BOARD_DIR/genimage.cfg" > "$BINARIES_DIR/genimage.cfg"

board/kontron/pitx-imx8m/post-image.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-support/scripts/genimage.sh -c $(dirname $0)/genimage.cfg
+support/scripts/genimage.sh -c ${BINARIES_DIR}/genimage.cfg

configs/kontron_pitx_imx8m_defconfig

@@ -14,6 +14,7 @@ BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.13"
 BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="freescale/imx8mq-kontron-pitx-imx8m"
+BR2_LINUX_KERNEL_DTB_KEEP_DIRNAME=y
 BR2_LINUX_KERNEL_INSTALL_TARGET=y
 BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
 
@@ -49,5 +50,3 @@ BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_IMX_MKIMAGE=y
 BR2_PACKAGE_HOST_UBOOT_TOOLS=y
 BR2_PACKAGE_HOST_UBOOT_TOOLS_FIT_SUPPORT=y
-BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT=y
-BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT_SOURCE="board/kontron/pitx-imx8m/boot.cmd"