1 files changed, 82 insertions, 0 deletions
diff --git a/include/env/tq/mmc.env b/include/env/tq/mmc.env
new file mode 100644
index 00000000000..abf561f8467
--- /dev/null
+++ b/include/env/tq/mmc.env
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2024-2026 TQ-Systems GmbH <[email protected]>,
+ * D-82229 Seefeld, Germany.
+ * Author: Max Merchel
+ *
+ * shared mmc environment for TQ boards
+ */
+
+addmmc=
+	setenv bootargs "${bootargs}"
+	root=/dev/mmcblk"${mmcblkdev}"p"${mmcrootpart}" "${rootfsmode}" rootwait;
+
+get_blockcount=
+	setexpr blkc "${filesize}" + 0x1ff;
+	setexpr blkc "${blkc}" / 0x200;
+
+load_mmc=
+	mmc dev "${mmcdev}"; mmc rescan;
+	load mmc "${mmcdev}":"${mmcpart}" "${kernel_addr_r}" /boot/"${image}";
+	load mmc "${mmcdev}":"${mmcpart}" "${fdt_addr_r}" /boot/"${fdtfile}";
+	fdt address "${fdt_addr_r}";
+        fdt resize 0x100000;
+	for overlay in "${fdt_overlays}"; do
+		load mmc "${mmcdev}":"${mmcpart}" "${fdtoverlay_addr_r}"
+                        /boot/"${overlay}" && fdt apply "${fdtoverlay_addr_r}";
+	done;
+
+mmcargs=run addtty addmmc
+
+mmcboot=
+	echo "Booting from mmc ...";
+	setenv bootargs && run mmcargs &&
+	if run load_mmc; then
+		run boot_os;
+	else
+		echo "ERROR: loading from mmc";
+	fi;
+
+mmcpart=2
+
+mmc_finish_update_uboot=
+	mmc write "${loadaddr}" "${update_start_blk}" "${blkc}";
+	mmc dev "${mmcdev}" 0;
+	setenv update_part;
+	setenv update_start_blk;
+	setenv blkc;
+
+mmc_prepare_update_uboot=
+	echo "Write U-Boot to mmc "${mmcdev}" ...";
+	mmc dev "${mmcdev}"; mmc rescan;
+	run get_blockcount;
+	setenv update_start_blk "${uboot_mmc_start}";
+	setenv update_part 0;
+
+mmc_switch_part=
+	mmc partconf "${mmcdev}" update_part;
+	mmc dev "${mmcdev}" "${update_part}";
+
+mmcrootpart=2
+
+update_uboot_mmc=
+	run check_ipaddr;
+	if tftp "${uboot}"; then
+		run mmc_prepare_update_uboot;
+		if itest "${blkc}" >= "${uboot_mmc_size}"; then
+			echo "ERROR: size to large ...";
+			exit;
+		fi;
+		if itest "${mmcdev}" == "${emmc_dev}"; then
+			run mmc_switch_part;
+			if itest "${update_part}" > 0 ; then
+				if env exists emmc_bootp_start; then
+					setenv update_start_blk "${emmc_bootp_start}";
+				else
+					echo "ERROR: eMMC boot partition block unset";
+					exit;
+				fi;
+			fi;
+		fi;
+		run mmc_finish_update_uboot;
+	fi;