Odroid M2: initial support

Author: mlegenovic

config/boards/odroidm2.csc

@@ -0,0 +1,51 @@
+# Rockchip RK3588s SoC octa core 4-16GB SoC eMMC USB3 NvME
+BOARD_NAME="Odroid M2"
+BOARDFAMILY="rockchip64"
+BOARD_MAINTAINER="mlegenovic"
+BOOT_SOC="rk3588"
+KERNEL_TARGET="edge"
+BOOT_FDT_FILE="rockchip/rk3588s-odroid-m2.dtb"
+BOOT_SCENARIO="binman"
+IMAGE_PARTITION_TABLE="gpt"
+FULL_DESKTOP="no"
+BOOT_LOGO="yes"
+
+BOOTBRANCH_BOARD="tag:v2025.04-rc2"
+BOOTBRANCH="${BOOTBRANCH_BOARD}"
+BOOTPATCHDIR="v2025.04-rc2"
+
+BOOTCONFIG="odroid-m2-rk3588s_defconfig"
+BOOTDIR="u-boot-${BOARD}" # do not share u-boot directory
+
+OVERLAY_PREFIX='rockchip-rk3588'
+
+function post_family_config__uboot_config() {
+	display_alert "$BOARD" "u-boot ${BOOTBRANCH_BOARD} overrides" "info"
+	BOOTDELAY=1 # Wait for UART interrupt to enter UMS/RockUSB mode etc
+	UBOOT_TARGET_MAP="BL31=${RKBIN_DIR}/$BL31_BLOB ROCKCHIP_TPL=${RKBIN_DIR}/${DDR_BLOB};;u-boot-rockchip.bin"
+	unset uboot_custom_postprocess write_uboot_platform write_uboot_platform_mtd # disable stuff from rockchip64_common; we're using binman here which does all the work already
+
+	# Just use the binman-provided u-boot-rockchip.bin, which is ready-to-go
+	function write_uboot_platform() {
+		dd if=${1}/u-boot-rockchip.bin of=${2} bs=32k seek=1 conv=fsync
+	}
+}
+
+# "rockchip-common: boot SD card first, then NVMe, then SATA, then USB, then mmc"
+# On odroidm2, mmc0 is the eMMC, mmc1 is the SD card slot
+function pre_config_uboot_target__odroidm2_patch_rockchip_common_boot_order() {
+	declare -a rockchip_uboot_targets=("mmc1" "nvme" "mmc0" "usb" "pxe" "dhcp") # for future make-this-generic delight
+	display_alert "u-boot for ${BOARD}/${BRANCH}" "u-boot: adjust boot order to '${rockchip_uboot_targets[*]}'" "info"
+	sed -i -e "s/#define BOOT_TARGETS.*/#define BOOT_TARGETS \"${rockchip_uboot_targets[*]}\"/" include/configs/rockchip-common.h
+	regular_git diff -u include/configs/rockchip-common.h || true
+}
+
+# add a network rule to rename default name
+function post_family_tweaks__odroidm2_rename_gmac_eth0() {
+	display_alert "Creating network rename rule for Odroid M2"
+	mkdir -p "${SDCARD}"/etc/udev/rules.d/
+	cat <<- EOF > "${SDCARD}"/etc/udev/rules.d/70-rename-lan.rules
+		SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", KERNEL=="end*", NAME="eth0"
+	EOF
+
+}