上一篇文章我详细的写了跑起NXP LS1046ARDB开发板的调试步骤，链接如下： https://blog.csdn.net/masterbee/article/details/81369314#comments 这篇文章是把跑起linux kernel的LOG贴出来，方便大家比对。 启动的linxu kernel部分LOG如下所示（由于log太长，所以只截取部分显示，需要完整版本的留言留下邮箱，单独发你）：

Welcome to [1mUbuntu 18.04.1 LTS[0m! [    4.023252] systemd[1]: Set hostname to .
[    4.084148] systemd[1]: File /lib/systemd/system/systemd-udevd.service:34 configures an IP firewall (IPAddressDeny=any), but the local system does not support BPF/cgroup based firewalling.
[    4.100961] systemd[1]: Proceeding WITHOUT firewalling in effect! (This warning is only shown for the first loaded unit using IP firewalling.)
[    4.154331] random: systemd: uninitialized urandom read (16 bytes read)
[    4.161007] systemd[1]: Reached target Remote File Systems.
[[0;32m  OK  [0m] Reached target Remote File Systems.
[    4.179108] random: systemd: uninitialized urandom read (16 bytes read)
[    4.185734] systemd[1]: Reached target Libvirt guests shutdown.
[[0;32m  OK  [0m] Reached target Libvirt guests shutdown.
[    4.207088] random: systemd: uninitialized urandom read (16 bytes read)
[    4.214562] systemd[1]: Created slice User and Session Slice.
[[0;32m  OK  [0m] Created slice User and Session Slice.
[    4.235159] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[[0;32m  OK  [0m] Started Dispatch Password Requests to Console Directory Watch.
[    4.259544] systemd[1]: Created slice System Slice.
[[0;32m  OK  [0m] Created slice System Slice.
[[0;32m  OK  [0m] Listening on udev Kernel Socket.
[[0;32m  OK  [0m] Listening on LVM2 metadata daemon socket.
[[0;32m  OK  [0m] Listening on Journal Socket.
[[0;32m  OK  [0m] Listening on Journal Audit Socket.
         Starting Remount Root and Kernel File Systems...
[[0;32m  OK  [0m] Reached target Swap.
         Starting Create list of required st…ce nodes for the current kernel...
[[0;32m  OK  [0m] Created slice system-serialx2dgetty.slice.
[[0;32m  OK  [0m] Listening on LVM2 poll daemon socket.
         Starting Set the console keyboard layout...
         Mounting Huge Pages File System...
[[0;32m  OK  [0m] Listening on udev Control Socket.
         Starting udev Coldplug all Devices...
         Mounting Kernel Debug File System...
[[0;32m  OK  [0m] Listening on Journal Socket (/dev/log).
         Mounting POSIX Message Queue File System...
[[0;32m  OK  [0m] Listening on Syslog Socket.
         Starting Journal Service...
[[0;32m  OK  [0m] Listening on Device-mapper event daemon FIFOs.
         Starting Monitoring of LVM2 mirrors…ng dmeventd or progress polling...
[[0;32m  OK  [0m] Listening on /dev/initctl Compatibility Named Pipe.
[[0;32m  OK  [0m] Started Forward Password Requests to Wall Directory Watch.
[[0;32m  OK  [0m] Reached target Paths.
[[0;32m  OK  [0m] Reached target Local Encrypted Volumes.
[[0;32m  OK  [0m] Reached target Slices.
         Starting Load Kernel Modules...
         Starting Availability of block devices...
[[0;32m  OK  [0m] Started Journal Service.
[[0;32m  OK  [0m] Started Remount Root and Kernel File Systems.
[[0;32m  OK  [0m] Started Create list of required sta…vice nodes for the current kernel.
[[0;32m  OK  [0m] Started Set the console keyboard layout.
[[0;32m  OK  [0m] Mounted Huge Pages File System.
[[0;32m  OK  [0m] Mounted Kernel Debug File System.
[[0;32m  OK  [0m] Mounted POSIX Message Queue File System.
[[0;32m  OK  [0m] Started Load Kernel Modules.
[[0;32m  OK  [0m] Started Availability of block devices.
[[0;32m  OK  [0m] Started LVM2 metadata daemon.
         Starting Apply Kernel Variables...
         Mounting Kernel Configuration File System...
         Mounting FUSE Control File System...
         Starting Create Static Device Nodes in /dev...
         Starting Load/Save Random Seed...
         Starting Flush Journal to Persistent Storage...
[[0;32m  OK  [0m] Started udev Coldplug all Devices.
[[0;32m  OK  [0m] Started Apply Kernel Variables.
[    5.020555] sd 1:0:0:0: [sdb] No Caching mode page found
[    5.025873] sd 1:0:0:0: [sdb] Assuming drive cache: write through
[[0;32m  OK  [0m] Mounted Kernel Configuration File System.
[[0;32m  OK  [0m] Mounted FUSE Control File System.
[[0;32m  OK  [0m] Started Create Static Device Nodes in /dev.
[[0;32m  OK  [0m] Started Load/Save Random Seed.
         Starting udev Kernel Device Manager...
[[0;32m  OK  [0m] Started udev Kernel Device Manager.
[[0;32m  OK  [0m] Started Flush Journal to Persistent Storage.
[[0;32m  OK  [0m] Found device /dev/ttyS0.
[[0;32m  OK  [0m] Started Monitoring of LVM2 mirrors,…sing dmeventd or progress polling.
[[0;32m  OK  [0m] Reached target Local File Systems (Pre).
[[0;32m  OK  [0m] Reached target Local File Systems.
         Starting Create Volatile Files and Directories...
         Starting QEMU KVM preparation - module, ksm, hugepages...
         Starting Set console font and keymap...
         Starting ebtables ruleset management...
[[0;32m  OK  [0m] Started Create Volatile Files and Directories.
[[0;32m  OK  [0m] Started QEMU KVM preparation - module, ksm, hugepages.
[[0;32m  OK  [0m] Started Set console font and keymap.
         Starting Network Time Synchronization...
         Starting Network Name Resolution...
         Starting Update UTMP about System Boot/Shutdown...
[[0;32m  OK  [0m] Started ebtables ruleset management.
[[0;32m  OK  [0m] Reached target Network (Pre).
         Starting Raise network interfaces...
[[0;32m  OK  [0m] Started Update UTMP about System Boot/Shutdown.
[[0;32m  OK  [0m] Started Network Name Resolution.
[[0;32m  OK  [0m] Started Network Time Synchronization.
[[0;32m  OK  [0m] Started Raise network interfaces.
[[0;32m  OK  [0m] Reached target System Initialization.
[[0;32m  OK  [0m] Listening on Virtual machine lock manager socket.
[[0;32m  OK  [0m] Started Message of the Day.
[[0;32m  OK  [0m] Listening on Virtual machine log manager socket.
[[0;32m  OK  [0m] Started Daily Cleanup of Temporary Directories.
[[0;32m  OK  [0m] Listening on D-Bus System Message Bus Socket.
         Starting LXD - unix socket.
[[0;32m  OK  [0m] Reached target System Time Synchronized.
[[0;32m  OK  [0m] Started Daily apt download activities.
[[0;32m  OK  [0m] Started Daily apt upgrade and clean activities.
[[0;32m  OK  [0m] Started Discard unused blocks once a week.
[[0;32m  OK  [0m] Reached target Timers.
[[0;32m  OK  [0m] Reached target Host and Network Name Lookups.
[[0;32m  OK  [0m] Reached target Network.
[[0;32m  OK  [0m] Reached target Network is Online.
[[0;32m  OK  [0m] Listening on LXD - unix socket.
[[0;32m  OK  [0m] Reached target Sockets.
[[0;32m  OK  [0m] Reached target Basic System.
         Starting Docker Application Container Engine...
         Starting Permit User Sessions...
         Starting Resets System Activity Data Collector...
         Starting containerd container runtime...
         Starting Login Service...
         Starting Initialize hardware monitoring sensors...
         Starting LSB: Load kernel modules needed to enable cpufreq scaling...
         Starting LXD - container startup/shutdown...
         Starting OpenBSD Secure Shell server...
[[0;32m  OK  [0m] Started LTTng session daemon.
         Starting LSB: Mount debugfs on /sys/kernel/debug...
         Starting LXC network bridge setup...
[[0;32m  OK  [0m] Started FUSE filesystem for LXC.
         Starting Dispatcher daemon for systemd-networkd...
         Starting System Logging Service...
[[0;32m  OK  [0m] Started Unattended Upgrades Shutdown.
[[0;32m  OK  [0m] Started D-Bus System Message Bus.
[[0;32m  OK  [0m] Started Login Service.
         Starting Virtualization daemon...
         Starting vsftpd FTP server...
         Starting LSB: network benchmark...
         Starting LSB: HPA's tftp server...
[[0;32m  OK  [0m] Started Set the CPU Frequency Scaling governor.
[[0;32m  OK  [0m] Started Regular background program processing daemon.
[[0;32m  OK  [0m] Started System Logging Service.
[[0;32m  OK  [0m] Started Dispatcher daemon for systemd-networkd.
[[0;32m  OK  [0m] Started Permit User Sessions.
[[0;32m  OK  [0m] Started Resets System Activity Data Collector.
[[0;32m  OK  [0m] Started containerd container runtime.
[[0;32m  OK  [0m] Started vsftpd FTP server.
[[0;32m  OK  [0m] Started OpenBSD Secure Shell server.
[[0;32m  OK  [0m] Started Initialize hardware monitoring sensors.
         Starting Set console scheme...
[[0;32m  OK  [0m] Started Serial Getty on ttyS0.
[[0;32m  OK  [0m] Started Virtualization daemon.
[[0;32m  OK  [0m] Started LSB: network benchmark.
[[0;32m  OK  [0m] Started Set console scheme.
[[0;32m  OK  [0m] Created slice system-getty.slice.
[[0;32m  OK  [0m] Started Getty on tty1.
[[0;32m  OK  [0m] Reached target Login Prompts.
         Starting Suspend/Resume Running libvirt Guests...
[[0;32m  OK  [0m] Started LSB: Mount debugfs on /sys/kernel/debug.
[[0;32m  OK  [0m] Started LSB: Load kernel modules needed to enable cpufreq scaling.
[[0;32m  OK  [0m] Started LXC network bridge setup.
[[0;32m  OK  [0m] Started LSB: HPA's tftp server.
         Starting LXC Container Initialization and Autoboot Code...
         Starting LSB: set CPUFreq kernel parameters...
[[0;32m  OK  [0m] Started Suspend/Resume Running libvirt Guests.
[[0;32m  OK  [0m] Started LSB: set CPUFreq kernel parameters.
[[0;32m  OK  [0m] Started LXC Container Initialization and Autoboot Code.
         Starting LSB: Set sysfs variables from /etc/sysfs.conf...
[[0;32m  OK  [0m] Started LSB: Set sysfs variables from /etc/sysfs.conf.

Ubuntu 18.04.1 LTS localhost ttyS0 localhost login: 

用户名和密码都是root。