How to compile and install Linux-kernel(4.18.0)
1.Choose linux kernel
(1)sudo apt-cache search linux-source
(2)sudo apt-get install linux-source-4.18.0(default path:/usr/src)
2.Install necessary software
(1)sudo apt-get install libncurses-dev
(2)sudo apt-get install libncurses5-dev
(3)sudo apt-get install flex
(4)sudo apt-get install openssl libssl-dev
(5)sudo apt-get install libelf-dev
3.compile linux kernel
(1)sudo tar -jxv -f linux-source-4.18.0.tar.bz2
(2)sudo cp /boot/config-4.15.0-45-generic .config
(3)sudo make menuconfig(default configuration)
(4)sudo make -j4 (reduce the compile time)
(5)sudo make modules_install
(6)sudo make install
(7)sudo reboot
4.check the startup logs(printk)
(1)sudo apt install util-linux
(2)dmesg >eric_debug
Tips for Windows connect the Linux paltform
1.install ssh server
sudo apt-get update
sudo apt-get install openssh-server
/etc/init.d/ssh start
2.Install putty on windwos paltform
host name: IP address(Linux paltform)
3.slove the connection problem
sudo apt install vim
sudo vim /etc/ssh/sshd_config
ClientAliveInterval 0 -> ClientAliveInterval 60
TCPKeepAlive yes(turn on)
How to compile U-Boot
(1)Error happpened
compile the U-Boot("samsung -- Exynos5250 --armv7")
sudo make smdk5250_defconfig
sudo make ARCH=arm all
Error log:
CC lib/asm-offsets.s
cc1: error: bad value (‘armv5’) for ‘-march=’ switch
cc1: note: valid arguments to ‘-march=’ switch are: nocona core2 nehalem corei7 westmere sandybridge corei7-avx ivybridge core-avx-i haswell core-avx2 broadwell skylake skylake-avx512 bonnell atom silvermont slm knl x86-64 eden-x2 nano nano-1000 nano-2000 nano-3000 nano-x2 eden-x4 nano-x4 k8 k8-sse3 opteron opteron-sse3 athlon64 athlon64-sse3 athlon-fx amdfam10 barcelona bdver1 bdver2 bdver3 bdver4 znver1 btver1 btver2
Kbuild:43: recipe for target 'lib/asm-offsets.s' failed
(2)Install arm-linux-gnueabi
sudo apt-get install gcc-arm-linux-gnueabi
(3)compile the U-Boot("samsung -- Exynos5250 --armv7")
sudo make smdk5250_defconfig
sudo make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- all