device: add genimage config files

Signed-off-by: carbon <carbon@milkv.io>

device/gen_burn_image_sd.sh

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+#!/bin/bash
+
+# milkv sd image generator
+
+# usage
+if [ "$#" -ne "1" ]; then
+  echo "usage: ${0} OUTPUT_DIR"
+  echo ""
+  echo "       The script is used to create a sdcard image with two partitions, "
+  echo "       one is fat32 with 128MB, the other is ext4 with 256MB."
+  echo "       You can modify the capacities in genimage cfg as you wish!"
+  echo "       genimage cfg: milkv/genimage-milkv-duo.cfg"
+  echo ""
+  echo "Note:  Please backup you sdcard files before using this image!"
+
+  exit
+fi
+
+echo "BR_DIR: $BR_DIR"
+echo "BR_BOARD: $BR_BOARD"
+
+# genimage command in buildroot host bin
+BR_HOST_BIN="${BR_DIR}/output/${BR_BOARD}/host/bin"
+if [ ! -d ${BR_HOST_BIN} ]; then
+  echo "host/bin not found, check buildroot output dir!"
+  exit 1
+fi
+
+export PATH=${BR_HOST_BIN}:${PATH}
+
+output_dir=$1
+echo ${output_dir}
+pushd ${output_dir}
+
+[ -d tmp ] && rm -rf tmp
+
+genimage --config ${TOP_DIR}/device/${MV_BOARD}/genimage.cfg --rootpath fs/ --inputpath ${PWD} --outputpath ${PWD}
+if [ $? -eq 0 ]; then
+    echo "gnimage for ${MV_BOARD} success!"
+else
+    echo "gnimage for ${MV_BOARD} failed!"
+fi
+
+popd

device/milkv-duo256m-musl-riscv64-sd/genimage.cfg

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+image boot.vfat {
+	vfat {
+		label = "boot"
+		files = {
+			"fip.bin",
+			"rawimages/boot.sd",
+		}
+	}
+	size = 128M
+}
+
+image rootfs.ext4 {
+	ext4 {
+		label = "rootfs"
+	}
+	size = 768M
+}
+
+image milkv-duo256m-musl-riscv64-sd.img {
+	hdimage {
+	}
+
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+                image = "boot.vfat"
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
+}

device/milkv-duos-musl-riscv64-sd/genimage.cfg

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+image boot.vfat {
+	vfat {
+		label = "boot"
+		files = {
+			"fip.bin",
+			"rawimages/boot.sd",
+		}
+	}
+	size = 128M
+}
+
+image rootfs.ext4 {
+	ext4 {
+		label = "rootfs"
+	}
+	size = 768M
+}
+
+image milkv-duos-musl-riscv64-sd.img {
+	hdimage {
+	}
+
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
+}