Zephyr MilkV DuoS Test Report

Test Environment

Operating System Information

Source Code Link: https://github.com/zephyrproject-rtos/zephyr/tree/main
Reference Installation Document:
- https://docs.zephyrproject.org/latest/develop/getting_started/index.html
- https://github.com/milkv-duo/duo-buildroot-sdk

Hardware Information

MilkV DuoS
A USB to UART Debugger
SD Card

Installation Steps

Create and Compile BuildRoot

Follow the official tutorial to obtain the source code:

git clone https://github.com/milkv-duo/duo-buildroot-sdk.git --depth=1

Modify build/boards/cv181x/cv1813h_milkv_duos_sd/u-boot/cvi_board_init.c to remove pre-mapped pins:

diff --git a/build/boards/cv181x/cv1813h_milkv_duos_sd/u-boot/cvi_board_init.c b/build/boards/cv181x/cv1813h_milkv_duos_sd/u-boot/cvi_board_init.c
index 6552f8da3..cbcb91cb6 100644
--- a/build/boards/cv181x/cv1813h_milkv_duos_sd/u-boot/cvi_board_init.c
+++ b/build/boards/cv181x/cv1813h_milkv_duos_sd/u-boot/cvi_board_init.c
@@ -6,52 +6,10 @@ static void set_rtc_register_for_power(void)
 
 int cvi_board_init(void)
 {
-       // Camera
-       PINMUX_CONFIG(CAM_MCLK0, CAM_MCLK0);
-       PINMUX_CONFIG(IIC3_SCL, IIC3_SCL);
-       PINMUX_CONFIG(IIC3_SDA, IIC3_SDA);
-       PINMUX_CONFIG(PAD_MIPIRX4P, XGPIOC_3);
-       PINMUX_CONFIG(PAD_MIPIRX4N, XGPIOC_2);
-
-       // I2C2 for Camera2
-       PINMUX_CONFIG(IIC2_SDA, IIC2_SDA);
-       PINMUX_CONFIG(IIC2_SCL, IIC2_SCL);
-
-       // LED
-       PINMUX_CONFIG(IIC0_SDA, XGPIOA_29);
-
-       // I2C4 for TP
-       PINMUX_CONFIG(VIVO_D1, IIC4_SCL);
-       PINMUX_CONFIG(VIVO_D0, IIC4_SDA);
-
-       // SPI3
-       PINMUX_CONFIG(VIVO_D8, SPI3_SDO);
-       PINMUX_CONFIG(VIVO_D7, SPI3_SDI);
-       PINMUX_CONFIG(VIVO_D6, SPI3_SCK);
-       PINMUX_CONFIG(VIVO_D5, SPI3_CS_X);
-
-       // USB
-       PINMUX_CONFIG(USB_VBUS_EN, XGPIOB_5);
-
-       // WIFI/BT
-       PINMUX_CONFIG(CLK32K, PWR_GPIO_10);
-       PINMUX_CONFIG(UART2_RX, UART4_RX);
-       PINMUX_CONFIG(UART2_TX, UART4_TX);
-       PINMUX_CONFIG(UART2_CTS, UART4_CTS);
-       PINMUX_CONFIG(UART2_RTS, UART4_RTS);
-
-       // GPIOs
-       PINMUX_CONFIG(JTAG_CPU_TCK, XGPIOA_18);
-       PINMUX_CONFIG(JTAG_CPU_TMS, XGPIOA_19);
-       PINMUX_CONFIG(JTAG_CPU_TRST, XGPIOA_20);
-       PINMUX_CONFIG(IIC0_SCL, XGPIOA_28);
-
-       // EPHY LEDs
-       PINMUX_CONFIG(PWR_WAKEUP0, EPHY_LNK_LED);
-       PINMUX_CONFIG(PWR_BUTTON1, EPHY_SPD_LED);
+       PINMUX_CONFIG(VIVO_D10, UART2_TX);
+       PINMUX_CONFIG(VIVO_D9, UART2_RX);
 
        set_rtc_register_for_power();
 
        return 0;
 }
-

Then compile using Docker:

cd duo-buildroot-sdk
docker exec -it duodocker /bin/bash -c "cd /home/work && cat /etc/issue && ./build.sh milkv-duo256m"

Next, flash the compiled source code to the SD card:

sudo dd if=out/milkv-duo-yyyymmdd-hhmm.img of=/dev/your/device bs=1M status=progress

Install Zephyr

Create a virtual environment:

python3 -m venv ~/zephyrproject/.venv
source ~/zephyrproject/.venv/bin/activate
pip install west

Note: Since it has not been merged into the main branch yet, use a specific repository to obtain Zephyr:

west init ~/zephyrproject -m https://github.com/plctlab/rvspoc-p2307-zephyr.git
cd ~/zephyrproject
west update

Configure the environment:

west zephyr-export
pip install -r ~/zephyrproject/zephyr/scripts/requirements.txt

Code Compliation

Compile the code using west:

west build -p always -b milkv_duos samples/hello_world

Merge fip.bin

Mount the SD card with the flashed BuildRoot image and merge fip:

sudo ./fsbl/plat/cv181x/fiptool.py -v genfip \
        './fsbl/build/cv1813h_milkv_duos_sd/fip.bin' \
        --MONITOR_RUNADDR="0x0000000080000000" \
        --BLCP_2ND_RUNADDR="0x000000009fe00000" \
        --CHIP_CONF='./fsbl/build/cv1813h_milkv_duos_sd/chip_conf.bin' \
        --NOR_INFO='FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' \
        --NAND_INFO='00000000'\
        --BL2='./fsbl/build/cv1813h_milkv_duos_sd/bl2.bin' \
        --BLCP_IMG_RUNADDR=0x05200200 \
        --BLCP_PARAM_LOADADDR=0 \
        --BLCP=./fsbl/test/empty.bin \
        --DDR_PARAM='./fsbl/test/cv181x/ddr_param.bin' \
        --BLCP_2ND='~/zephyrproject/zephyr/build/zephyr/zephyr.bin' \
        --MONITOR='./opensbi/build/platform/generic/firmware/fw_dynamic.bin' \
        --LOADER_2ND='./u-boot-2021.10/build/cv1813h_milkv_duos_sd/u-boot-raw.bin' \
        --compress='lzma'

Copy it to the SD card:

sudo cp ./fsbl/build/cv1813h_milkv_duos_sd/fip.bin /path/to/sdcard

Connect Serial Port

Zephyr uses UART2 (GP11: TX, GP13: RX, GP9: GND) on the small core.

Expected Results

The system should boot normally and information should be viewable via the onboard serial port.

Actual Results

The system booted successfully and information was viewable via the onboard serial port.

Boot Information

Screen recording (From compilation to boot):

Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000
Hello World! milkv_duos/sg2000

Test Criteria

Successful: The actual result matches the expected result.

Failed: The actual result does not match the expected result.

Test Conclusion

Test successful.

System Version

Status

Last Update