bsp: cvitek: fix build error for aarch64

This patch fixed the error "bash: mksdimg.sh: No such file
or directory" when building cv18xx_aarch64.

The issue is introduced by commit "bsp: cvitek: removed
useless files after using rttpkgtool".

In addition, in order to unify the logic with riscv as much
as possible, the name of the "milkv-duo256m" directory under
cv18xx_aarch64 is uniformly changed to "duo256m".

This patch also improve the README, adding instructions to
install xz-utils.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>

bsp/cvitek/README.md

@@ -128,9 +128,11 @@ export RTT_EXEC_PATH=/opt/riscv64-linux-musleabi_for_x86_64-pc-linux-gnu/bin
 ## 4.2. 依赖安装
 
 ```shell
-$ sudo apt install -y scons libncurses5-dev device-tree-compiler u-boot-tools
+$ sudo apt install -y scons libncurses5-dev device-tree-compiler u-boot-tools xz-utils
 ```
 
+其中 u-boot-tools 包含了打包需要的 mkimage, xz-utils 包含了打包需要的 lzma。
+
 ## 4.3. 构建
 
 异构芯片需单独编译每个核的 OS，在大/小核对应的目录下，依次执行:

bsp/cvitek/cv18xx_aarch64/combine.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 C906_LITTLE_BIN_PATH=../c906_little/rtthread.bin
-GEN_FIP_PATH=../output/milkv-duo256m/
-DEPENDS_FILE_PATH=./prebuild/milkv-duo256m
+GEN_FIP_PATH=../output/duo256m/
+DEPENDS_FILE_PATH=./prebuild/duo256m
 
 BLCP_IMG_RUNADDR=0x05200200
 BLCP_PARAM_LOADADDR=0

bsp/cvitek/cv18xx_aarch64/mksdimg.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+
+PROJECT_PATH=$1
+IMAGE_NAME=$2
+
+if [ -z "$PROJECT_PATH" ] || [ -z "$IMAGE_NAME" ]; then
+	echo "Usage: $0 <PROJECT_DIR> <IMAGE_NAME>"
+	exit 1
+fi
+
+ROOT_PATH=$PROJECT_PATH/..
+
+source ${ROOT_PATH}/tools.sh
+
+BOARD_TYPE=`get_board_type $PROJECT_PATH`
+
+echo "start compress kernel..."
+
+lzma -c -9 -f -k ${PROJECT_PATH}/${IMAGE_NAME} > ${PROJECT_PATH}/dtb/${BOARD_TYPE}/Image.lzma
+
+mkdir -p ${ROOT_PATH}/output/${BOARD_TYPE}
+mkimage -f ${PROJECT_PATH}/dtb/${BOARD_TYPE}/multi.its -r ${ROOT_PATH}/output/${BOARD_TYPE}/boot.sd
+
+rm -rf ${PROJECT_PATH}/dtb/${BOARD_TYPE}/Image.lzma

bsp/cvitek/cv18xx_aarch64/rtconfig.py

@@ -46,4 +46,4 @@ if PLATFORM == 'gcc':
 DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtt.asm\n'
 POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
 POST_ACTION += OBJCPY + ' -O binary $TARGET Image \n' + SIZE + ' $TARGET \n'
-POST_ACTION += './combine.sh && cd .. && bash mksdimg.sh ' + os.getcwd() + ' Image \n'
+POST_ACTION += './combine.sh && ./mksdimg.sh ' + os.getcwd() + ' Image \n'