Build RPi3 / RPi4 boot and Ubuntu / Debian / Raspbian system rootfs / initrd with u-boot / armstub support in armhf / aarch64
This project is inspired by https://github.com/chainsx/ubuntu64-rpi/tree/ubuntu-18.04-arm64/build. However, I do not fork it. Instead, I revised it and left it here for future improvement.
This recipe of scripts already were verified on an amd64 Ubuntu 16.04 LTS with Raspberry Pi 3 Model B v1.2. The verified target is arm64 Ubuntu 18.04 LTS.
(
Updated: Raspberry Pi 4 Model B is coming now. I modified the scripts by some known and explored workarounds by
https://blog.cloudkernels.net/posts/rpi4-64bit-image/
https://jamesachambers.com/raspberry-pi-ubuntu-server-18-04-2-installation-guide/
)
Study the scripts themselves and then customize anything you would like to have.
$ ./buildrootfs.sh # this is general aarch64 debian or ubuntu debootstrap
or
./buildrootfs-arm32.sh # this is general armhf debian or ubuntu debootstrap
or
./buildrootfs-raspbian.sh # this is special debootstrap for RPi's raspbian armhf only
or
./buildrootfs-tasksel.sh # add tasksel with appropriate ubuntu back-port apt sources and try to install mate-desktop later
$ ./buildfirmware.sh
$ ./buildkernel-uboot-rpi3.sh # this is RPi3 aarch64 4.14.y kernel with v2017.11 u-boot
or
./buildkernel-uboot-rpi3-2.sh # this is RPi3 aarch64 4.15.y kernel and v2018.11 u-boot supported booti of vmlinuz (insight by Ubuntu Bionic RPi3 server prebuilt)
or
./buildkernel-armstub-rpi3.sh # this is RPi3 aarch64 kernel by default stub (to support 4.19.y kernel since u-boot cannot boot up the new firmware of new kernel? Will check this later.
https://github.com/raspberrypi/firmware/issues/1157
or
./buildkernel-armstub-rpi3-arm32.sh # this is RPi3 armhf kernel by default stub
or
./buildkernel-armstub-rpi4.sh # this is RPi4 aarch64 kernel with armstub8 (a temp workaround/checkout)
or
./buildkernel-armstub-rpi4-arm32.sh # this is RPi4 armhf kernel by default stub
or
./buildkernel-armstub-rpi0-arm32.sh # this is RPi0 (0w, 1) armhf kernel by default stub
$ ./install-kerneldeb.sh # there are 3 deb files in deb-pkg regarded to kernel, which can be installed into rootfs for later conveniently upgrading
$ ./buildimage-{2GB|8GB}.sh # create dd image for 2GB root or 8GB root with 128M boot partition
Then you obtained image of "${VER}-${ROOTARCH}-${RPT_VER}.img", and you could place it on to your micro SD card.
$ xzcat DISTRIB-RELEASE-ROOTARCH-RPI_TARGET.img.xz | pv | sudo dd of=/dev/sdX
If you need mmcli/nmcli to support 3G/LTE modem (cdc-wdm0/wwan0), suggest to use Debian distrib instead of Ubuntu Bionic. I tried it and that did not work correctly on some QMI mPCIe modem such as EC25/EG25. Or you need to revise apt sources.list to get up-to-date apt repositories manually
I strongly suggest you to connect your RPi 3 with a UART/USB cable and watch it booting-up on a console/terminal emulator (PuTTY, TeraTerm, minicom, etc) You could rebuild the kernel all the time when the upstream kernel is upgraded, then just replace the following stuffs in your microSD card:
/boot/vmlinuz-`uname -r` /boot/System.map-`uname -r` /boot/config-`uname -r` /boot/initrd.img /boot/Image /lib/modules/`uname -r`
Now I added make command to generate kernel's debian packages (linux-image & linux-headers) for convenience of kernel upgrade. At the same time, these can be used to build customer (3rd-party) kernel modules. However, you need to manually work on RPi3's /boot kernel replacement. The vmlinuz is gziped Image(.gz), and you need to gunzip vmlinuz and name it as Image, so that u-boot can load it correctly.
I learned from Armbian and now I am going to study on how to generate linux-kernel-dtb package. Stay tuned.
U-Boot 2017.11 (Jul 27 2018 - 15:18:45 +0800)
DRAM: 948 MiB
RPI 3 Model B (0xa02082)
MMC: sdhci@7e300000: 0
*** Warning - bad CRC, using default environment
In: serial
Out: vidconsole
Err: vidconsole
Net: No ethernet found.
starting USB...
USB0: Core Release: 2.80a
scanning bus 0 for devices... 3 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot.scr
reading /boot.scr
353 bytes read in 13 ms (26.4 KiB/s)
## Executing script at 02000000
reading Image
15137280 bytes read in 898 ms (16.1 MiB/s)
reading initrd.img
9186959 bytes read in 559 ms (15.7 MiB/s)
## Flattened Device Tree blob at 00000100
Booting using the fdt blob at 0x000100
Loading Ramdisk to 3a683000, end 3af45e8f ... OK
reserving fdt memory region: addr=0 size=1000
Loading Device Tree to 000000003a679000, end 000000003a6826ad ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.14.58-v8+ (me@ubuntu) (gcc version 8.1.0 (GCC)) #1 SMP PREEMPT Fri Jul 27 15:40:04 CST 2018
[ 0.000000] Boot CPU: AArch64 Processor [410fd034]
[ 0.000000] Machine model: Raspberry Pi 3 Model B Rev 1.2
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 8 MiB at 0x0000000039c00000
[ 0.000000] percpu: Embedded 22 pages/cpu @ffffffc57b379000 s50456 r8192 d31464 u90112
[ 0.000000] Detected VIPT I-cache on CPU0
[ 0.000000] CPU features: enabling workaround for ARM erratum 845719
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 238896
[ 0.000000] Kernel command line: 8250.nr_uarts=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 earlyprintk dwc_otg.lpm_enable=0 console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 0.000000] Memory: 919568K/970752K available (7036K kernel code, 894K rwdata, 4048K rodata, 2752K init, 686K bss, 42992K reserved, 8192K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] modules : 0xffffff8000000000 - 0xffffff8008000000 ( 128 MB)
[ 0.000000] vmalloc : 0xffffff8008000000 - 0xffffffbebfff0000 ( 250 GB)
[ 0.000000] .text : 0xffffff8979680000 - 0xffffff8979d60000 ( 7040 KB)
[ 0.000000] .rodata : 0xffffff8979d60000 - 0xffffff897a160000 ( 4096 KB)
[ 0.000000] .init : 0xffffff897a160000 - 0xffffff897a410000 ( 2752 KB)
[ 0.000000] .data : 0xffffff897a410000 - 0xffffff897a4efa00 ( 895 KB)
[ 0.000000] .bss : 0xffffff897a4efa00 - 0xffffff897a59b468 ( 687 KB)
[ 0.000000] fixed : 0xffffffbefe7fb000 - 0xffffffbefec00000 ( 4116 KB)
[ 0.000000] PCI I/O : 0xffffffbefee00000 - 0xffffffbeffe00000 ( 16 MB)
[ 0.000000] vmemmap : 0xffffffbf00000000 - 0xffffffc000000000 ( 4 GB maximum)
[ 0.000000] 0xffffffbf15000000 - 0xffffffbf15ed0000 ( 14 MB actual)
[ 0.000000] memory : 0xffffffc540000000 - 0xffffffc57b400000 ( 948 MB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] ftrace: allocating 25371 entries in 100 pages
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Tasks RCU enabled.
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
[ 0.000006] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[ 0.000230] Console: colour dummy device 80x25
[ 0.001059] console [tty1] enabled
[ 0.001100] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=19200)
[ 0.001145] pid_max: default: 32768 minimum: 301
[ 0.001490] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.001537] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.002562] Disabling memory control group subsystem
[ 0.007086] ASID allocator initialised with 32768 entries
[ 0.009080] Hierarchical SRCU implementation.
[ 0.011334] EFI services will not be available.
[ 0.013146] smp: Bringing up secondary CPUs ...
[ 0.020347] Detected VIPT I-cache on CPU1
[ 0.020412] CPU1: Booted secondary processor [410fd034]
[ 0.027448] Detected VIPT I-cache on CPU2
[ 0.027493] CPU2: Booted secondary processor [410fd034]
[ 0.034559] Detected VIPT I-cache on CPU3
[ 0.034601] CPU3: Booted secondary processor [410fd034]
[ 0.034742] smp: Brought up 1 node, 4 CPUs
[ 0.034869] SMP: Total of 4 processors activated.
[ 0.034898] CPU features: detected feature: 32-bit EL0 Support
[ 0.034927] CPU features: detected feature: Kernel page table isolation (KPTI)
[ 0.038225] CPU: All CPU(s) started at EL2
[ 0.038276] alternatives: patching kernel code
[ 0.039606] devtmpfs: initialized
[ 0.051988] random: get_random_u32 called from bucket_table_alloc+0x108/0x270 with crng_init=0
[ 0.052689] Enabled cp15_barrier support
[ 0.052729] Enabled setend support
[ 0.053046] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[ 0.053099] futex hash table entries: 1024 (order: 5, 131072 bytes)
[ 0.053779] pinctrl core: initialized pinctrl subsystem
[ 0.054032] DMI not present or invalid.
[ 0.054364] NET: Registered protocol family 16
[ 0.059230] cpuidle: using governor menu
[ 0.059658] vdso: 2 pages (1 code @ ffffff8979d67000, 1 data @ ffffff897a414000)
[ 0.059707] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.063175] DMA: preallocated 256 KiB pool for atomic allocations
[ 0.063335] Serial: AMBA PL011 UART driver
[ 0.065911] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[ 0.066566] uart-pl011 3f201000.serial: could not find pctldev for node /soc/gpio@7e200000/uart0_pins, deferring probe
[ 0.100105] bcm2835-dma 3f007000.dma: DMA legacy API manager at ffffff800801d000, dmachans=0x1
[ 0.101881] SCSI subsystem initialized
[ 0.102167] usbcore: registered new interface driver usbfs
[ 0.102249] usbcore: registered new interface driver hub
[ 0.102389] usbcore: registered new device driver usb
[ 0.102620] dmi: Firmware registration failed.
[ 0.103011] raspberrypi-firmware soc:firmware: Attached to firmware from 2018-07-03 14:15
[ 0.104454] clocksource: Switched to clocksource arch_sys_counter
[ 0.202010] VFS: Disk quotas dquot_6.6.0
[ 0.202138] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.202368] FS-Cache: Loaded
[ 0.202703] CacheFiles: Loaded
[ 0.213132] NET: Registered protocol family 2
[ 0.213953] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.214094] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[ 0.214309] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.214578] UDP hash table entries: 512 (order: 2, 16384 bytes)
[ 0.214647] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[ 0.214954] NET: Registered protocol family 1
[ 0.215580] RPC: Registered named UNIX socket transport module.
[ 0.215608] RPC: Registered udp transport module.
[ 0.215631] RPC: Registered tcp transport module.
[ 0.215653] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.215950] Trying to unpack rootfs image as initramfs...
[ 0.983600] Freeing initrd memory: 8968K
[ 0.990320] hw perfevents: enabled with armv8_pmuv3 PMU driver, 7 counters available
[ 0.992286] workingset: timestamp_bits=46 max_order=18 bucket_order=0
[ 1.002821] FS-Cache: Netfs 'nfs' registered for caching
[ 1.003623] NFS: Registering the id_resolver key type
[ 1.003677] Key type id_resolver registered
[ 1.003702] Key type id_legacy registered
[ 1.006234] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 1.006464] io scheduler noop registered
[ 1.006492] io scheduler deadline registered (default)
[ 1.006822] io scheduler cfq registered
[ 1.006850] io scheduler mq-deadline registered
[ 1.006876] io scheduler kyber registered
[ 1.010368] BCM2708FB: allocated DMA memory f9c50000
[ 1.010430] BCM2708FB: allocated DMA channel 0 @ ffffff800801d000
[ 1.014561] Console: switching to colour frame buffer device 82x26
[ 1.018849] Serial: 8250/16550 driver, 1 ports, IRQ sharing enabled
[ 1.021998] bcm2835-rng 3f104000.rng: hwrng registered
[ 1.023655] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[ 1.027363] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[ 1.030630] cacheinfo: Unable to detect cache hierarchy for CPU 0
[ 1.044381] brd: module loaded
[ 1.057249] loop: module loaded
[ 1.058807] Loading iSCSI transport class v2.0-870.
[ 1.061232] libphy: Fixed MDIO Bus: probed
[ 1.062876] usbcore: registered new interface driver lan78xx
[ 1.064470] usbcore: registered new interface driver smsc95xx
[ 1.065960] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 1.067772] dwc_otg 3f980000.usb: base=0x082b0000
[ 1.269509] Core Release: 2.80a
[ 1.271020] Setting default values for core params
[ 1.272588] Finished setting default values for core params
[ 1.474423] Using Buffer DMA mode
[ 1.475991] Periodic Transfer Interrupt Enhancement - disabled
[ 1.477586] Multiprocessor Interrupt Enhancement - disabled
[ 1.479175] OTG VER PARAM: 0, OTG VER FLAG: 0
[ 1.480735] Dedicated Tx FIFOs mode
[ 1.482712] WARN::dwc_otg_hcd_init:1046: FIQ DMA bounce buffers: virt = 0x08181000 dma = 0xf9c44000 len=9024
[ 1.485723] FIQ FSM acceleration enabled for :
[ 1.485723] Non-periodic Split Transactions
[ 1.485723] Periodic Split Transactions
[ 1.485723] High-Speed Isochronous Endpoints
[ 1.485723] Interrupt/Control Split Transaction hack enabled
[ 1.492747] WARN::hcd_init_fiq:486: MPHI regs_base at 0x08045000
[ 1.494272] dwc_otg 3f980000.usb: DWC OTG Controller
[ 1.495736] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[ 1.497285] dwc_otg 3f980000.usb: irq 15, io mem 0x00000000
[ 1.498813] Init: Port Power? op_state=1
[ 1.500278] Init: Power Port (0)
[ 1.501959] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.503487] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.505007] usb usb1: Product: DWC OTG Controller
[ 1.506493] usb usb1: Manufacturer: Linux 4.14.58-v8+ dwc_otg_hcd
[ 1.507990] usb usb1: SerialNumber: 3f980000.usb
[ 1.510127] hub 1-0:1.0: USB hub found
[ 1.511620] hub 1-0:1.0: 1 port detected
[ 1.514236] usbcore: registered new interface driver usb-storage
[ 1.515792] IR NEC protocol handler initialized
[ 1.517172] IR RC5(x/sz) protocol handler initialized
[ 1.518547] IR RC6 protocol handler initialized
[ 1.519924] IR JVC protocol handler initialized
[ 1.521271] IR Sony protocol handler initialized
[ 1.522625] IR SANYO protocol handler initialized
[ 1.523969] IR Sharp protocol handler initialized
[ 1.525254] IR MCE Keyboard/mouse protocol handler initialized
[ 1.526559] IR XMP protocol handler initialized
[ 1.528694] bcm2835-wdt 3f100000.watchdog: Broadcom BCM2835 watchdog timer
[ 1.530346] bcm2835-cpufreq: min=600000 max=1200000
[ 1.532139] sdhci: Secure Digital Host Controller Interface driver
[ 1.533525] sdhci: Copyright(c) Pierre Ossman
[ 1.535232] mmc-bcm2835 3f300000.mmc: could not get clk, deferring probe
[ 1.537000] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[ 1.538547] Error: Driver 'sdhost-bcm2835' is already registered, aborting...
[ 1.539986] sdhci-pltfm: SDHCI platform and OF driver helper
[ 1.542992] ledtrig-cpu: registered to indicate activity on CPUs
[ 1.544672] hidraw: raw HID events driver (C) Jiri Kosina
[ 1.546356] usbcore: registered new interface driver usbhid
[ 1.547860] usbhid: USB HID core driver
[ 1.549637] Initializing XFRM netlink socket
[ 1.551131] NET: Registered protocol family 17
[ 1.552719] Key type dns_resolver registered
[ 1.555295] registered taskstats version 1
[ 1.564969] uart-pl011 3f201000.serial: cts_event_workaround enabled
[ 1.566663] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 72, base_baud = 0) is a PL011 rev2
[ 1.571769] console [ttyS0] disabled
[ 1.573419] 3f215040.serial: ttyS0 at MMIO 0x0 (irq = 151, base_baud = 31250000) is a 16550
[ 1.721564] Indeed it is in host mode hprt0 = 00021501
[ 1.796735] random: fast init done
[ 1.888502] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 1.888672] Indeed it is in host mode hprt0 = 00001101
[ 2.077907] usb 1-1: New USB device found, idVendor=0424, idProduct=9514
[ 2.077917] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.078594] hub 1-1:1.0: USB hub found
[ 2.078755] hub 1-1:1.0: 5 ports detected
[ 2.376482] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 2.501479] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 2.501490] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.506191] smsc95xx v1.0.6
[ 2.712803] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:2c:66:d0
[ 2.741356] console [ttyS0] enabled
[ 2.747760] mmc-bcm2835 3f300000.mmc: mmc_debug:0 mmc_debug2:0
[ 2.755351] mmc-bcm2835 3f300000.mmc: DMA channel allocated
[ 2.787304] sdhost: log_buf @ ffffff80080b5000 (f9c47000)k
[ 2.816483] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[ 2.825206] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 2.833899] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 2.843743] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[ 2.850696] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[ 2.852498] of_cfs_init
[ 2.852617] of_cfs_init: OK
[ 2.870585] Freeing unused kernel memory: 2752K
[ 2.963180] mmc0: host does not support reading read-only switch, assuming write-enable
[ 2.980985] mmc0: new high speed SDHC card at address e624
[ 2.988679] bounce: isa pool size: 16 pages
[ 2.994547] mmcblk0: mmc0:e624 SB16G 14.8 GiB
[ 3.006857] mmcblk0: p1 p2
[ 3.015871] mmc1: new high speed SDIO card at address 0001
[ 3.286265] smsc95xx 1-1.1:1.0 enxb827eb2c66d0: renamed from eth0
[ 3.765390] random: crng init done
[ 8.619790] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem
[ 8.629015] EXT4-fs (mmcblk0p2): write access will be enabled during recovery
[ 8.704719] EXT4-fs (mmcblk0p2): recovery complete
[ 8.713035] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 9.316763] systemd[1]: System time before build time, advancing clock.
[ 9.473598] NET: Registered protocol family 10
[ 9.481174] Segment Routing with IPv6
[ 9.504238] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 9.539485] systemd[1]: systemd 237 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)
[ 9.566651] systemd[1]: Detected architecture arm64.
[ 9.587785] systemd[1]: Set hostname to .
[ 9.894549] systemd[1]: File /lib/systemd/system/systemd-journald.service:36 configures an IP firewall (IPAddressDeny=any), but the local system does not support BPF/cgroup based firewalling.
[ 9.916711] systemd[1]: Proceeding WITHOUT firewalling in effect! (This warning is only shown for the first loaded unit using IP firewalling.)
[ 10.125327] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[ 10.141638] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[ 10.156167] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ 10.170249] systemd[1]: Reached target Local Encrypted Volumes.
[ 10.180643] systemd[1]: Reached target Paths.
[ 11.495131] brcmfmac: brcmf_c_preinit_dcmds: CLM version = API: 12.2 Data: 7.11.15 Compiler: 1.24.2 ClmImport: 1.24.1 Creation: 2014-05-26 10:53:55 Inc Data: 9.10.39 Inc Compiler: 1.29.4 Inc ClmImport: 1.36.3 Creation: 2017-10-23 03:47:14
Ubuntu 18.04 LTS ubuntu-pi ttyS0
ubuntu-pi login: ubuntu
Password:
Last login: Sun Jan 28 15:58:33 UTC 2018 on ttyS0
Welcome to Ubuntu 18.04 LTS (GNU/Linux 4.14.58-v8+ aarch64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
To run a command as administrator (user "root"), use "sudo ".
See "man sudo_root" for details.
ubuntu@ubuntu-pi:~$ uname -a
Linux ubuntu-pi 4.14.58-v8+ #1 SMP PREEMPT Fri Jul 27 15:40:04 CST 2018 aarch64 aarch64 aarch64 GNU/Linux