官网指导文档：https://wiki.luckfox.com/zh/Luckfox-Pico/Luckfox-Pico-RV1103/Luckfox-Pico-SDK

由于RV1103_Luckfox_Pico默认是使用sd卡烧录镜像的，但是给他焊了个spi nand flash，不用sd卡。

首先查看下flash信息

制作spi nand flash镜像的操作如下：
1） 使用linux系统，下载sdk

git clone https://gitee.com/LuckfoxTECH/luckfox-pico.git

2） 在目录luckfox-pico/project/cfg/BoardConfig_IPC下新建一个BoardConfig-SPI_NAND-Buildroot-RV1103_Luckfox_Pico_Pro-IPC.mk文件

​将BoardConfig-SD_CARD-Buildroot-RV1103_Luckfox_Pico-IPC.mk的内容复制到BoardConfig-SPI_NAND-Buildroot-RV1103_Luckfox_Pico_Pro-IPC.mk中，然后修改下面五处

#!/bin/bash

#################################################
# 	Board Config
#################################################

# Target CHIP
export RK_CHIP=rv1106

# app config
export RK_APP_TYPE=RKIPC_RV1103

# Config CMA size in environment
export RK_BOOTARGS_CMA_SIZE="24M"

# Kernel dts
export RK_KERNEL_DTS=rv1103g-luckfox-pico-pro.dts

#################################################
#	BOOT_MEDIUM
#################################################

# Target boot medium: emmc/spi_nor/spi_nand
export RK_BOOT_MEDIUM=spi_nand

# Uboot defconfig fragment
export RK_UBOOT_DEFCONFIG_FRAGMENT=rk-sfc.config

# specify post.sh for delete/overlay files
# export RK_PRE_BUILD_OEM_SCRIPT=rv1103-spi_nor-post.sh

# config partition in environment
# RK_PARTITION_CMD_IN_ENV format:
#     <partdef>[,<partdef>]
#       <partdef> := <size>[@<offset>](part-name)
# Note:
#   If the first partition offset is not 0x0, it must be added. Otherwise, it needn't adding.
export RK_PARTITION_CMD_IN_ENV="256K(env),256K@256K(idblock),512K(uboot),4M(boot),30M(oem),10M(userdata),210M(rootfs)"

# config partition's filesystem type (squashfs is readonly)
# emmc:    squashfs/ext4
# nand:    squashfs/ubifs
# spi nor: squashfs/jffs2
# RK_PARTITION_FS_TYPE_CFG format:
#     AAAA:/BBBB/CCCC@ext4
#         AAAA ----------> partition name
#         /BBBB/CCCC ----> partition mount point
#         ext4 ----------> partition filesystem type
export RK_PARTITION_FS_TYPE_CFG=rootfs@IGNORE@ubifs,userdata@/userdata@ubifs,oem@/oem@ubifs

# config filesystem compress (Just for squashfs or ubifs)
# squashfs: lz4/lzo/lzma/xz/gzip, default xz
# ubifs:    lzo/zlib, default lzo
# export RK_SQUASHFS_COMP=xz
# export RK_UBIFS_COMP=lzo

#################################################
#	TARGET_ROOTFS
#################################################

# Target rootfs : ubuntu(only sd_card)/buildroot/busybox
export LF_TARGET_ROOTFS=buildroot

# Buildroot defconfig
export RK_BUILDROOT_DEFCONFIG=luckfox_pico_defconfig

#################################################
# 	Defconfig
#################################################

# Target arch
export RK_ARCH=arm

# Target Toolchain Cross Compile
export RK_TOOLCHAIN_CROSS=arm-rockchip830-linux-uclibcgnueabihf

#misc image
export RK_MISC=wipe_all-misc.img

# Uboot defconfig
export RK_UBOOT_DEFCONFIG=luckfox_rv1106_uboot_defconfig

# Kernel defconfig
export RK_KERNEL_DEFCONFIG=luckfox_rv1106_linux_defconfig

# Config sensor IQ files
# RK_CAMERA_SENSOR_IQFILES format:
#     "iqfile1 iqfile2 iqfile3 ..."
# ./build.sh media and copy <SDK root dir>/output/out/media_out/isp_iqfiles/$RK_CAMERA_SENSOR_IQFILES
export RK_CAMERA_SENSOR_IQFILES="sc4336_OT01_40IRC_F16.json sc3336_CMK-OT2119-PC1_30IRC-F16.json"
#export RK_CAMERA_SENSOR_IQFILES="sc4336_OT01_40IRC_F16.json sc3336_CMK-OT2119-PC1_30IRC-F16.json sc530ai_CMK-OT2115-PC1_30IRC-F16.json"

# Config sensor lens CAC calibrattion bin files
export RK_CAMERA_SENSOR_CAC_BIN="CAC_sc4336_OT01_40IRC_F16"
#export RK_CAMERA_SENSOR_CAC_BIN="CAC_sc4336_OT01_40IRC_F16 CAC_sc530ai_CMK-OT2115-PC1_30IRC-F16"

# build ipc web backend
# export RK_APP_IPCWEB_BACKEND=y

# enable install app to oem partition
export RK_BUILD_APP_TO_OEM_PARTITION=y

# enable rockchip test
export RK_ENABLE_ROCKCHIP_TEST=y

3）在目录luckfox-pico/sysdrv/source/kernel/arch/arm/boot/dts下复制一份rv1103g-luckfox-pico.dts并命名为rv1103g-luckfox-pico-pro.dts

cp rv1103g-luckfox-pico.dts rv1103g-luckfox-pico-pro.dts

修改两处

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright (c) 2022 Rockchip Electronics Co., Ltd.
 */

/dts-v1/;

#include "rv1103.dtsi"
#include "rv1106-evb.dtsi"
#include "rv1103-luckfox-pico-ipc.dtsi"

/ {
	model = "Luckfox Pico Pro";
	compatible = "rockchip,rv1103g-38x38-ipc-v10", "rockchip,rv1103";
};

&sfc {
	status = "okay";

	flash@0 {
		compatible = "spi-nand";
		reg = <0>;
		spi-max-frequency = <75000000>;
		spi-rx-bus-width = <4>;
		spi-tx-bus-width = <1>;
	};
};

/**********SDMMC**********/
&sdmmc {
	max-frequency = <50000000>;
	no-sdio;
	no-mmc;
	bus-width = <4>;
	cap-mmc-highspeed;
	cap-sd-highspeed;
	disable-wp;
	pinctrl-names = "default";
	pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>;
	status = "okay";
};

/**********ETH**********/
&gmac {
	status = "disabled";
};

/**********USB**********/
&usbdrd_dwc3 {
	status = "okay";
	dr_mode = "peripheral";
};

/**********SPI**********/
/* SPI0_M0 */
&spi0 {
	status = "disabled";
	spidev@0 {
		spi-max-frequency = <50000000>;
	};
  fbtft@0 {
    spi-max-frequency = <50000000>;
  };
};

/**********I2C**********/
/* I2C3_M1 */
&i2c3 {
	status = "disabled";
	clock-frequency = <100000>;
};

/**********UART**********/
/* UART3_M1 */
&uart3 {
	status = "disabled";
};

/* UART4_M1 */
&uart4 {
	status = "disabled";
};

/**********PWM**********/
/* PWM1_M0 */
&pwm1 {
	status = "disabled";
};

4）编译镜像

# 选择参考板级
RV1103/luckfox-pico$ ./build.sh lunch
You're building on Linux
  Lunch menu...pick the Luckfox Pico hardware version:
  选择 Luckfox Pico 硬件版本:
                [0] RV1103_Luckfox_Pico
                [1] RV1103_Luckfox_Pico_Mini_A
                [2] RV1103_Luckfox_Pico_Mini_B
                [3] RV1103_Luckfox_Pico_Plus
                [4] RV1106_Luckfox_Pico_Pro_Max
                [5] RV1106_Luckfox_Pico_Ultra
                [6] RV1106_Luckfox_Pico_Ultra_W
                [7] custom
Which would you like? [0~7][default:0]: 7
----------------------------------------------------------------
...

----------------------------------------------------------------
16. BoardConfig_IPC/BoardConfig-SPI_NAND-Buildroot-RV1103_Luckfox_Pico_Pro-IPC.mk
                             boot medium(启动介质): SPI_NAND
                          system version(系统版本): Buildroot
                        hardware version(硬件版本): RV1103_Luckfox_Pico_Pro
                              applicaton(应用场景): IPC
----------------------------------------------------------------
...
----------------------------------------------------------------

Which would you like? [default:0]: 16
[build.sh:info] Lunching for Default BoardConfig_IPC/BoardConfig-SPI_NAND-Buildroot-RV1103_Luckfox_Pico_Pro-IPC.mk boards...
[build.sh:info] Running build_select_board succeeded.

# 一键自动编译
RV1103/luckfox-pico$ ./build.sh

要很久时间

5）使用SPI NAND Flash 烧录镜像
将luckfox-pico/output目录下的image文件夹全部复制到windows系统电脑上，然后打开SocToolKit工具
使用USB线将开发板连接上电脑

烧录完成后参考官方指导试一下串口调试，烧录的系统是buildroot

登录账号：root
登录密码：luckfox

参考：

1. 【RV1103】Luckfox Pico RV1103 开发记录
2. 【RV1103】Luckfox Pico 构建系统分析
3. 【RV1103】SD卡和无线WiFi同时使用