一、对于 kernel
1、下载
tiansong@tiansong:~$ pwd/home/tiansong# 下载tiansong@tiansong:~/100ask_imx6ull_pro$ git clone http://source.codeaurora.cn/external/imx/linux-imx# 切换分支tiansong@tiansong:~/100ask_imx6ull_pro$ cd linux-imx/## 查看所有分支tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ git branch -a## 切换到 imx 最新分支tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ git checkout remotes/origin/imx_5.4.70_2.3.0## 确认是否切换胜利tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ git log -12、 开发板文件适配
默认的配置文件
复制公版提供的默认配置文件
tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx/arch/arm/configs$ pwd/home/tiansong/100ask_imx6ull_pro/linux-imx/arch/arm/configstiansong@tiansong:~/100ask_imx6ull_pro/linux-imx/arch/arm/configs$ cp imx_v7_defconfig 100ask_imx6ull_pro_emmc_defconfig复制公版提供设施树
tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx/arch/arm/boot/dts$ pwd/home/tiansong/100ask_imx6ull_pro/linux-imx/arch/arm/boot/dtstiansong@tiansong:~/100ask_imx6ull_pro/linux-imx/arch/arm/boot/dts$ cp imx6ull-14x14-evk-emmc.dts 100ask_imx6ull_pro_emmc.dtstiansong@tiansong:~/100ask_imx6ull_pro/linux-imx/arch/arm/boot/dts$ cp imx6ull-14x14-evk.dts 100ask_imx6ull_pro.dtstiansong@tiansong:~/100ask_imx6ull_pro/linux-imx/arch/arm/boot/dts$ cp imx6ul-14x14-evk.dtsi 100ask_imx6ull_pro.dtsi批改 100ask_imx6ull_pro_emmc.dts#include "imx6ull-14x14-evk.dts"#include "100ask_imx6ull_pro.dts批改 100ask_imx6ull_pro.dts#include "imx6ull.dtsi"#include "imx6ul-14x14-evk.dtsi"model = "Freescale i.MX6 ULL 14x14 EVK Board";#include "100ask_imx6ull_pro.dtsi"model = "100ASK IMX6ULL PRO EMMC Board";批改 100ask_imx6ull_pro.dtsi# 1.批改 backlight_display 节点backlight_display: backlight-display { compatible = "pwm-backlight"; pwms = <&pwm1 0 1000>; // 默认设施树中频率过高，背光管制芯片 滋滋滋 ~ brightness-levels = <0 4 8 16 32 64 128 255>; default-brightness-level = <6>; status = "okay";};# 2.批改网口节点&fec1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enet1>; phy-mode = "rmii"; phy-handle = <ðphy0>; status = "disabled"; // 批改};&fec2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enet2>; phy-mode = "rmii"; phy-handle = <ðphy1>; phy-reset-gpios = <&gpio5 6 GPIO_ACTIVE_LOW>; // 新增 phy-reset-duration = <50>; // 新增 status = "okay"; mdio { #address-cells = <1>; #size-cells = <0>; ethphy0: ethernet-phy@2 { reg = <0>; smsc,led-mode = <1>; clocks = <&clks IMX6UL_CLK_ENET_REF>; clock-names = "rmii-ref"; }; ethphy1: ethernet-phy@1 { reg = <1>; smsc,led-mode = <1>; clocks = <&clks IMX6UL_CLK_ENET2_REF>; clock-names = "rmii-ref"; }; };};pinctrl_enet2: enet2grp { fsl,pins = < MX6UL_PAD_GPIO1_IO07__ENET2_MDC 0x1b0b0 MX6UL_PAD_GPIO1_IO06__ENET2_MDIO 0x1b0b0 MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN 0x1b0b0 MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER 0x1b0b0 MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00 0x1b0b0 MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01 0x1b0b0 MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN 0x1b0b0 MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b0b0 MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b0b0 MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 0x4001b031 /* used for phy reset */ MX6ULL_PAD_SNVS_TAMPER6__GPIO5_IO06 0x1b0b0 // 减少复位引脚 >;};# 3.批改 lcd 节点&lcdif { assigned-clocks = <&clks IMX6UL_CLK_LCDIF_PRE_SEL>; assigned-clock-parents = <&clks IMX6UL_CLK_PLL5_VIDEO_DIV>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_lcdif_dat &pinctrl_lcdif_ctrl>; display = <&display0>; status = "okay"; reset-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; display0: display@0 { bits-per-pixel = <24>; bus-width = <24>; display-timings { native-mode = <&timing0>; timing0: timing0 { clock-frequency = <50000000>; hactive = <1024>; vactive = <600>; hfront-porch = <160>; hback-porch = <140>; hsync-len = <20>; vback-porch = <20>; vfront-porch = <12>; vsync-len = <3>; hsync-active = <0>; vsync-active = <0>; de-active = <1>; pixelclk-active = <0>; }; }; };}; pinctrl_lcdif_ctrl: lcdifctrlgrp { fsl,pins = < MX6UL_PAD_LCD_CLK__LCDIF_CLK 0x79 MX6UL_PAD_LCD_ENABLE__LCDIF_ENABLE 0x79 MX6UL_PAD_LCD_HSYNC__LCDIF_HSYNC 0x79 MX6UL_PAD_LCD_VSYNC__LCDIF_VSYNC 0x79 /* used for lcd reset */ MX6UL_PAD_LCD_RESET__GPIO3_IO04 0x1b0b0 // 减少复位引脚 >; };批改 /home/tiansong/100ask_imx6ull_pro/linux-imx/arch/arm/boot/dts/Makefiledtb-$(CONFIG_SOC_IMX6UL) += \...imx6ull-14x14-evk.dtb \100ask_imx6ull_pro.dtb \ # 新增imx6ull-14x14-evk-emmc.dtb \100ask_imx6ull_pro_emmc.dtb \ # 新增...3、配置及编译
装置环境依赖
sudo apt-get install libssl-dev生成 .config 文件
tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ pwd/home/tiansong/100ask_imx6ull_pro/linux-imxtiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ make distcleantiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ make 100ask_imx6ull_pro_emmc_defconfig图形化配置
使能SMSC PHY反对, 目录项：Device Drivers --> Network device support --> PHY Device support and infrasttructure
编译
tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ make -j12tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ ls arch/arm/boot/zImage -l-rwxrwxr-x 1 tiansong tiansong 8998576 8月 30 19:16 arch/arm/boot/zImagetiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ ls arch/arm/boot/dts/100ask_imx6ull_pro_emmc.dtb -l-rw-rw-r-- 1 tiansong tiansong 35808 8月 30 19:54 arch/arm/boot/dts/100ask_imx6ull_pro_emmc.dtb4、装置 tftp 服务
目标：kernel 在 调试过程中，会一直的批改、编译，之后再将 zImage 和 dtb 传输到开发板执行。为了不便这一过程，开发板的 uboot 应用 tftp 下载 ubuntu 中的 zImage 和 dtb 启动。
装置 tftp 服务sudo apt-get install tftp-hpa tftpd-hpa创立 tftp 工作目录mkdir -p /home/tiansong/tftpbootsudo chmod 777 /home/tiansong/tftpboot/增加配置信息
sudo vim /etc/default/tftpd-hpa# 文件开端增加TFTP_DIRECTORY="/home/tiansong/tftpboot"TFTP_OPTIONS="-l -c -s"重启 tftp 服务 sudo service tftpd-hpa restart5、开发板 tftp 启动 & kernel 验证
uboot 命令行顺次输出 【172.16.10.228 为 ubuntu 地址】=> setenv fdt_file 100ask_imx6ull_pro_emmc.dtb=> setenv serverip 172.16.10.228=> run netboottftp 下载 zImagetftp 下载 dtb内核启动
网卡工作失常
lcd 察看 ()
留神:下图提醒未能正确挂载根文件系统（是失常景象，根文件系统在 buildroot 局部制作）6、文件及代码治理
默认配置文件更新
tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ make savedefconfigscripts/kconfig/conf --savedefconfig=defconfig Kconfigtiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ ls defconfig -l-rw-rw-r-- 1 tiansong tiansong 13756 8月 30 20:42 defconfigtiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ cp defconfig ./arch/arm/configs/100ask_imx6ull_pro_emmc_defconfig本地 git 仓库提交
tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ git statusHEAD detached at origin/imx_5.4.70_2.3.0Changes not staged for commit: (use "git add <file>..." to update what will be committed) (use "git restore <file>..." to discard changes in working directory) modified: arch/arm/boot/dts/MakefileUntracked files: (use "git add <file>..." to include in what will be committed) arch/arm/boot/dts/100ask_imx6ull_pro.dts arch/arm/boot/dts/100ask_imx6ull_pro.dtsi arch/arm/boot/dts/100ask_imx6ull_pro_emmc.dts arch/arm/configs/100ask_imx6ull_pro_emmc_defconfig defconfigno changes added to commit (use "git add" and/or "git commit -a")tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ git add -Atiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ git commit -m "适配 100ask_imx6ull_pro 开发板"tiansong@tiansong:~/100ask_imx6ull_pro/linux-imx$ git log -1commit 9ab576476820f1e5a8f4a79cbd16414f84692987 (HEAD)Author: TianSong <1508539502@qq.com>Date: Tue Aug 30 20:45:12 2022 +0800 适配 100ask_imx6ull_pro 开发板