Chao at 12:08, 12 May 2020

2020-05-12T12:08:40Z

New page

== Source ==
* https://releases.linaro.org/components/toolchain/binaries/
* https://releases.linaro.org/components/toolchain/binaries/6.3-2017.05/arm-linux-gnueabihf/
* https://releases.linaro.org/components/toolchain/binaries/6.3-2017.05/arm-linux-gnueabihf/gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf.tar.xz

== Download and Complie ==
* [[ARM_GCC#arm_linux_gnu_eabi_hf_gcc]]
* UBoot - https://github.com/Lichee-Pi/u-boot.git
* Config
git clone https://github.com/Lichee-Pi/u-boot.git -b v3s-current
#or git clone https://github.com/Lichee-Pi/u-boot.git -b v3s-spi-experimental
cd u-boot
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero_800x480LCD_defconfig
#or make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero480x272LCD_defconfig
#or make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero_defconfig
make ARCH=arm menuconfig
time make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 2>&1 | tee build.log

== Config ==
* make ARCH=arm menuconfig

== Zero UBoot ==

=== install prequiste ===
apt-get install gcc make pkg-config libusb-1.0-0-dev libncurses5-dev
sudo apt-get install git-core gnupg flex bison gperf build-essential zip curl zlib1g-dev libc6-dev lib32ncurses5-dev gcc-multilib x11proto-core-dev libx11-dev lib32z1-dev libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown libxml2-utils
apt-get install gcc-arm-linux-gnueabihf device-tree-compiler mtd-utils
* GCC Linaro
wget https://releases.linaro.org/components/toolchain/binaries/latest-7/aarch64-linux-gnu/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu.tar.xz
tar xvf gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu.tar.xz
mv gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu /opt/
vim /etc/bash.bashrc
# add: PATH="$PATH:/opt/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin"
arm-linux-gnueabihf-gcc -v

=== Uboot ===
For SPI Flash version
* git clone -b v3s-spi-experimental https://github.com/Lichee-Pi/u-boot.git
or normal version
* git clone https://github.com/Lichee-Pi/u-boot.git -b v3s-current

==== config file include/configs/sun8i.h ====
==== For TF card boot ? ====
#define CONFIG_BOOTCOMMAND "setenv bootm_boot_mode sec; " \
"load mmc 0:1 0x41000000 zImage; " \
"load mmc 0:1 0x41800000 sun8i-v3s-licheepi-zero-dock.dtb; " \
"bootz 0x41000000 - 0x41800000;"

#define CONFIG_BOOTARGS "console=ttyS0,115200 panic=5 rootwait root=/dev/mmcblk0p2 earlyprintk rw vt.global_cursor_default=0"
===== or for SPI Flash boot =====
#define CONFIG_BOOTCOMMAND "sf probe 0; " \
"sf read 0x41800000 0x100000 0x10000; " \
"sf read 0x41000000 0x110000 0x400000; " \
"bootz 0x41000000 - 0x41800000"

#define CONFIG_BOOTARGS "console=ttyS0,115200 earlyprintk panic=5 rootwait " \
"mtdparts=spi32766.0:1M(uboot)ro,64k(dtb)ro,4M(kernel)ro,-(rootfs) root=31:03 rw rootfstype=jffs2"

==== Menuconfig ====
* config generate default configuration file
cd u-boot
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero_800x480LCD_defconfig
#or make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero480x272LCD_defconfig
#or make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero_defconfig
* config in menu -> ARCH=arm make menuconfig
* '''Architecture select''' - ARM
* '''ARM architecture'''
Target select (Support sunxi (Allwinner) SoCs)
(360) sunxi dram clock speed config dram speed
(14779) sunxi dram zq value config dram ZQ value，是用来动态加强DDR3的
-*- Board uses DDR2 DRAM use DDR2 DRAM使用DDR2 DRAM
[*] Enable graphical uboot console on HDMI, LCD or VGA 这个就是在显示设备上使能串口控制
[ ] VGA via LCD controller support 使能支持VGA通过LCD的控制器，就是LCD和VAG转换需要的控制器
(x:800,y:480,depth:18,pclk_khz:33000,le:87,ri:40,up:31,lo:13,hs:1,vs:1,sync:3,vmode:0) LCD pane
> 该选项就是配置LCD的分辨率的配置选项可以看到x是800 y是480 等等一些关于LCD的配置内容，点击回车进去可以对其进行修改。
(1) LCD panel display clock phase 这个是LCD的显示时钟相位
() LCD panel power enable pin LCD的电源使能引脚
() LCD panel reset pin LCD的复位引脚
(PB4) LCD panel backlight pwm pin 背光PWN引脚这个应该是调节亮度的引脚PB4
[*] LCD panel backlight pwm is inverted 反转PWN背光引脚
[ ] LCD panel needs to be configured via i2c
LCD panel support (Generic parallel interface LCD panel) ---> 这个选择支持的LCDpanel
(X) Generic parallel interface LCD panel 这里选择支持通用的并行的LCD接口
( ) Generic lvds interface LCD panel 这个是LVDS接口
( ) MIPI 4-lane, 513Mbps LCD panel via SSD2828 bridge chip
( ) eDP 4-lane, 1.62G LCD panel via ANX9804 bridge chip
( ) Hitachi tx18d42vm LCD panel
( ) tl059wv5c0 LCD panel
(0) GMAC Transmit Clock Delay Chain
* '''Boot images''' - (1008000000) CPU clock frequency
* ''' delay in seconds before automatically booting ''' - 2s<br>

SPL / TPL ---> 这个就是SPL相关的配置了
[*] MMC raw mode: by sector 按扇区
(0x50) Address on the MMC to load U-Boot from mmc加载uboot的地址
[*] Support GPIO 支持GPIO
[*] Support I2C 支持I2C
[*] Support common libraries 支持通用lib
[*] Support disk paritions 支持分区
[*] Support generic libraries 支持一般lib库
[*] Support MMC 支持MMC
[*] Support power drivers 支持电源驱动
[*] Support serial 支持串口

==== complie ====
* time make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 2>&1 | tee build.log
* ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make
* or ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make -j3
* 第一个time命令完全可以去掉，time主要为了计算该编译需要花费的时间
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
* 这个之前的config也说了，其实就是给变量ARCH赋值arm
* 给CROSS_COMPILE赋值arm-linux-gnueabihf-
* 也可以先省去，剩下的：
make 2>&1 | tee build.log
* tee 这个命令是把make生成的log写入到build.log文件中，这样编译之后的log文件可以保留存有备份，也可以省去。
make 2>&1
* 查了下资料数字2对应stderr 数字1对应stdout
* 这里即将标准err输出 &作为连接符表示‘与’的意思，即标准输出和标准error输出都进行输出。
* 其实真正执行编译的是下面的命令：
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
* 小伙伴可以试下，该命令是否可以编译出u-boot-sunxi-with-spl.bin文件，其他的命令都是辅助编译的命令，用于调试的时候开启。亲测直接make CROSS_COMPILE=arm-linux-gnueabihf- 也是可以的。

== Use Uboot ==
Hit any key to stop autoboot: 0
=> printenv
arch=arm
baudrate=115200
board=sunxi
board_name=sunxi
...
== Reference ==
* http://nano.lichee.pro/build_sys/bootargs.html
* https://licheezero.readthedocs.io/zh/latest/%E7%B3%BB%E7%BB%9F%E5%BC%80%E5%8F%91/uboot_build.html

[[category: Bootloader]]

Category:UBoot - Revision history

Chao at 12:08, 12 May 2020