[Arm-dev] Cubieboard5 performance
Pablo Sebastián Greco
pablo at fliagreco.com.ar
Fri Aug 10 15:01:10 UTC 2018
El 10/8/18 a las 10:18, Robert Moskowitz escribió:
>
>
> On 08/10/2018 08:51 AM, Andreas Reschke wrote:
>>
>> Am 10.08.2018 um 14:36 schrieb Robert Moskowitz:
>>>
>>> On 08/10/2018 08:17 AM, arm_ml at rirasoft.de wrote:
>>>> Am 2018-08-09 17:31, schrieb Robert Moskowitz:
>>>>> On 08/09/2018 11:21 AM, arm_ml at rirasoft.de wrote:
>>>>>> Am 2018-08-09 16:57, schrieb Robert Moskowitz:
>>>>>>> On 08/09/2018 10:31 AM, arm_ml at rirasoft.de wrote:
>>>>>>>> Am 2018-08-09 13:58, schrieb Robert Moskowitz:
>>>>>>>>> On 08/09/2018 07:34 AM, arm_ml at rirasoft.de wrote:
>>>>>>>>>> Am 2018-08-07 12:23, schrieb Pablo Sebastián Greco:
>>>>>>>>>>> <snip>
>>>>>> snip
>>>> Wow, I can boot it, but I can't login and can't install the kernel
>>>> from Pablo. Whats next?
>>>>
>>>>
>>>> U-Boot SPL 2018.09-rc1 (Jul 31 2018 - 12:18:07 +0000)
>>> Good you got the current uboot.
>>>
>>>> DRAM: 2048 MiB
>>>> Trying to boot from MMC1
>>>>
>>>>
>>>> U-Boot 2018.09-rc1 (Jul 31 2018 - 12:18:07 +0000) Allwinner Technology
>>>>
>>>> CPU: Allwinner A83T (SUN8I 1673)
>>>> Model: Cubietech Cubietruck Plus
>>> Do you have any other arm soc? If you put that cards uboot on, boot
>>> up on that card, install the new kernel, then go back to the
>>> Cubietruck+ uboot, that would work.
>>>
>>> Pablo may know of a simpler method, as I don't do kernel work. I did
>>> work a lot with uboot a couple years ago.
>> Sorry: this didn't work, because this Image didn't boot on my Cubietruck
>> 3. Maybe Pablo has an Idea?
>
> Did you dd the Cubietruck uboot? I have booted on my C3.
>
> Though there may be a 1st boot problem here on things that are copied
> during 1st boot based on what uboot is present. In that case, things
> are really hard, and quite beyond my limited skills.
>
>
>>
>>>
>>>> I2C: ready
>>>> DRAM: 2 GiB
>>>> MMC: SUNXI SD/MMC: 0, SUNXI SD/MMC: 1
>>>> Loading Environment from FAT... *** Warning - bad CRC, using default
>>>> environment
>>>>
>>>> Failed (-5)
>>>> In: serial
>>>> Out: serial
>>>> Err: serial
>>>> Net: No ethernet found.
>>>> starting USB...
>>>> USB0: failed to get usb PHY
>>>> Port not available.
>>>> USB1: failed to get usb at 01c1a000 usb PHY
>>>> Port not available.
>>>> USB2: failed to get usb at 01c1b000 usb PHY
>>>> Port not available.
>>>> Hit any key to stop autoboot: 0
>>>> switch to partitions #0, OK
>>>> mmc0 is current device
>>>> Scanning mmc 0:2...
>>>> Found /extlinux/extlinux.conf
>>>> Retrieving file: /extlinux/extlinux.conf
>>>> 857 bytes read in 16 ms (51.8 KiB/s)
>>>> Ignoring unknown command: ui
>>>> Ignoring malformed menu command: autoboot
>>>> Ignoring malformed menu command: hidden
>>>> Ignoring unknown command: totaltimeout
>>>> CentOS-Userland-7-armv7hl-generic-Minimal-1804 Boot Options.
>>>> 1: CentOS-Userland-7-armv7hl-generic-Minimal-1804
>>>> (4.14.28-201.el7.centos.armv7hl)
>>>> 2: single
>>>> Enter choice: 1: CentOS-Userland-7-armv7hl-generic-Minimal-1804
>>>> (4.14.28-201.el7.centos.armv7hl)
>>>> Retrieving file: /initramfs-4.14.28-201.el7.centos.armv7hl.img
>>>> 42665567 bytes read in 11495 ms (3.5 MiB/s)
>>>> Retrieving file: /vmlinuz-4.14.28-201.el7.centos.armv7hl
>>>> 6627840 bytes read in 682 ms (9.3 MiB/s)
>>>> append: ro root=UUID=e4d55603-4823-4fb7-ab52-46f2e9fcaae1 selinux=off
>>>> Retrieving file:
>>>> /dtb-4.14.28-201.el7.centos.armv7hl/sun8i-a83t-cubietruck-plus.dtb
>>>> 6627840 bytes read in 682 ms (9.3 MiB/s)
>>>> append: ro root=UUID=e4d55603-4823-4fb7-ab52-46f2e9fcaae1 selinux=off
>>>> Retrieving file:
>>>> /dtb-4.14.28-201.el7.centos.armv7hl/sun8i-a83t-cubietruck-plus.dtb
>>>> 10902 bytes read in 586 ms (17.6 KiB/s)
>>>> ## Flattened Device Tree blob at 43000000
>>>> Booting using the fdt blob at 0x43000000
>>>> Loading Ramdisk to 4774f000, end 49fff65f ... OK
>>>> Loading Device Tree to 47749000, end 4774ea95 ... OK
>>>>
>>>> Starting kernel ...
>>>>
>>>> [ 0.000000] Booting Linux on physical CPU 0x0
>>>> [ 0.000000] Linux version 4.14.28-201.el7.centos.armv7hl
>>>> (mockbuild at armhfp-02.bsys.centos.org) (gcc version 4.8.5 20150623
>>>> (Red Hat 4.8.5-16) (GCC)) #1 SMP Mon Mar 19 20:25:46 UTC 2018
>>>> [ 0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7),
>>>> cr=10c5387d
>>>> [ 0.000000] CPU: div instructions available: patching division code
>>>> [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
>>>> instruction cache
>>>> [ 0.000000] OF: fdt: Machine model: Cubietech Cubietruck Plus
>>>> [ 0.000000] Memory policy: Data cache writealloc
>>>> [ 0.000000] efi: Getting EFI parameters from FDT:
>>>> [ 0.000000] efi: UEFI not found.
>>>> snip
>>>> Welcome to CentOS Linux 7 (Core) dracut-033-535.el7 (Initramfs)!
>>>>
>>>> [ 5.950324] systemd[1]: No hostname configured.
>>>> [ 5.954983] systemd[1]: Set hostname to <localhost>.
>>>> [ 5.960338] systemd[1]: Initializing machine ID from random
>>>> generator.
>>>> [ OK ] Reached target Swap.
>>>> [ 6.310341] systemd[1]: Reached target Swap.
>>>> [ 6.314834] systemd[1]: Starting Swap.
>>>> [ OK ] Created slice Root Slice.
>>>> [ 6.326288] systemd[1]: Created slice Root Slice.
>>>> [ 6.331225] systemd[1]: Starting Root Slice.
>>>> [ OK ] Listening on Journal Socket.
>>>> [ OK ] Listening on udev Kernel Socket.
>>>> [ OK ] Reached target Timers.
>>>> [ OK ] Created slice System Slice.
>>>> Starting Create list of required st... nodes for the current
>>>> kernel...
>>>> Starting Journal Service...
>>>> Starting Apply Kernel Variables...
>>>> [ OK ] Listening on udev Control Socket.
>>>> [ OK ] Reached target Slices.
>>>> [ OK ] Reached target Sockets.
>>>> Starting Setup Virtual Console...
>>>> [ OK ] Reached target Local File Systems.
>>>> Starting dracut cmdline hook...
>>>> [ OK ] Started Create list of required sta...ce nodes for the
>>>> current kernel.
>>>> [ OK ] Started Apply Kernel Variables.
>>>> [ OK ] Started Setup Virtual Console.
>>>> Starting Create Static Device Nodes in /dev...
>>>> [ OK ] Started Journal Service.
>>>> [ OK ] Started Create Static Device Nodes in /dev.
>>>> [ OK ] Started dracut cmdline hook.
>>>> Starting dracut pre-udev hook...
>>>> [ OK ] Started dracut pre-udev hook.
>>>> Starting udev Kernel Device Manager...
>>>> [ OK ] Started udev Kernel Device Manager.
>>>> Starting udev Coldplug all Devices...
>>>> [ OK ] Started udev Coldplug all Devices.
>>>> Starting Show Plymouth Boot Screen...
>>>> [ OK ] Reached target System Initialization.
>>>> Starting dracut initqueue hook...
>>>> [ OK ] Started Show Plymouth Boot Screen.
>>>> [ OK ] Reached target Paths.
>>>> [ OK ] Reached target Basic System.
>>>> Mounting Configuration File System...
>>>> [ OK ] Mounted Configuration File System.
>>>> [ 9.258492] ehci-platform: EHCI generic platform driver
>>>> [ 9.310921] sunxi-mmc 1c0f000.mmc: Got CD GPIO
>>>> [ 9.353339] sunxi-mmc 1c0f000.mmc: base:0xf0b41000 irq:24
>>>> [ 9.401563] mmc0: host does not support reading read-only switch,
>>>> assuming write-enable
>>>> [ 9.409746] sunxi-mmc 1c11000.mmc: base:0xf0b45000 irq:25
>>>> [ 9.418906] mmc0: new high speed SDHC card at address 0007
>>>> [ 9.488974] mmc1: new DDR MMC card at address 0001
>>>> [ 9.710645] mmcblk0: mmc0:0007 SD32G 29.0 GiB
>>>> [ 9.720620] mmcblk0: p1 p2 p3 p4
>>>> [ 9.731581] mmcblk1: mmc1:0001 NCard 7.30 GiB
>>>> [ 9.736734] mmcblk1boot0: mmc1:0001 NCard partition 1 4.00 MiB
>>>> [ 9.744053] mmcblk1boot1: mmc1:0001 NCard partition 2 4.00 MiB
>>>> [ 9.754396] mmcblk1: p1 p2
>>>> [ OK ] Found device
>>>> /dev/disk/by-uuid/e4d55603-4823-4fb7-ab52-46f2e9fcaae1.
>>>> [ OK ] Started dracut initqueue hook.
>>>> [ OK ] Reached target Remote File Systems (Pre).
>>>> [ OK ] Reached target Remote File Systems.
>>>> Starting File System Check on
>>>> /dev/...3-4823-4fb7-ab52-46f2e9fcaae1...
>>>> [ OK ] Started File System Check on
>>>> /dev/d...603-4823-4fb7-ab52-46f2e9fcaae1.
>>>> Mounting /sysroot...
>>>> [ 10.483219] EXT4-fs (mmcblk0p4): mounted filesystem with ordered
>>>> data mode. Opts: (null)
>>>> [ OK ] Mounted /sysroot.
>>>> [ OK ] Reached target Initrd Root File System.
>>>> Starting Reload Configuration from the Real Root...
>>>> [ OK ] Started Reload Configuration from the Real Root.
>>>> [ OK ] Reached target Initrd File Systems.
>>>> [ OK ] Reached target Initrd Default Target.
>>>> Starting dracut pre-pivot and cleanup hook...
>>>> [ OK ] Started dracut pre-pivot and cleanup hook.
>>>> Starting Cleaning Up and Shutting Down Daemons...
>>>> [ OK ] Stopped Cleaning Up and Shutting Down Daemons.
>>>> [ OK ] Stopped dracut pre-pivot and cleanup hook.
>>>> Stopping dracut pre-pivot and cleanup hook...
>>>> [ OK ] Stopped target Initrd Default Target.
>>>> [ OK ] Stopped target Basic System.
>>>> [ OK ] Stopped target Paths.
>>>> [ OK ] Stopped target System Initialization.
>>>> Stopping udev Kernel Device Manager...
>>>> [ OK ] Stopped target Swap.
>>>> [ OK ] Stopped target Slices.
>>>> [ OK ] Stopped target Sockets.
>>>> [ OK ] Stopped Apply Kernel Variables.
>>>> Stopping Apply Kernel Variables...
>>>> [ OK ] Stopped target Timers.
>>>> [ OK ] Stopped target Local File Systems.
>>>> Starting Plymouth switch root service...
>>>> [ OK ] Stopped target Remote File Systems.
>>>> [ OK ] Stopped target Remote File Systems (Pre).
>>>> [ OK ] Stopped dracut initqueue hook.
>>>> Stopping dracut initqueue hook...
>>>> [ OK ] Stopped udev Coldplug all Devices.
>>>> Stopping udev Coldplug all Devices...
>>>> [ OK ] Stopped udev Kernel Device Manager.
>>>> snip
>>>> Welcome to CentOS Linux 7 (Core)!
>>>>
>>>> [ OK ] Stopped Switch Root.
>>>> [ OK ] Stopped Journal Service.
>>>> Starting Journal Service...
>>>> [ OK ] Reached target Local Encrypted Volumes.
>>>> [ OK ] Created slice
>>>> system-selinux\x2dpol...grate\x2dlocal\x2dchanges.slice.
>>>> [ OK ] Set up automount Arbitrary Executab...ats File System
>>>> Automount Point.
>>>> Mounting Debug File System...
>>>> [ OK ] Listening on /dev/initctl Compatibility Named Pipe.
>>>> [ OK ] Stopped target Switch Root.
>>>> [ OK ] Stopped target Initrd File Systems.
>>>> [ OK ] Stopped target Initrd Root File System.
>>>> [ OK ] Stopped File System Check on Root Device.
>>>> Stopping File System Check on Root Device...
>>>> [ OK ] Listening on udev Kernel Socket.
>>>> [ OK ] Created slice system-getty.slice.
>>>> Starting Read and set NIS domainname from
>>>> /etc/sysconfig/network...
>>>> Starting Collect Read-Ahead Data...
>>>> [ OK ] Listening on Delayed Shutdown Socket.
>>>> Mounting POSIX Message Queue File System...
>>>> [ OK ] Created slice User and Session Slice.
>>>> [ OK ] Reached target Slices.
>>>> [ OK ] Reached target Remote File Systems.
>>>> [ OK ] Created slice system-serial\x2dgetty.slice.
>>>> [ OK ] Listening on udev Control Socket.
>>>> Starting Create list of required st... nodes for the current
>>>> kernel...
>>>> [ OK ] Reached target Paths.
>>>> Starting Replay Read-Ahead Data...
>>>> [ OK ] Mounted POSIX Message Queue File System.
>>>> [ OK ] Mounted Debug File System.
>>>> [ OK ] Started Journal Service.
>>>> [ OK ] Started Collect Read-Ahead Data.
>>>> [ OK ] Started Replay Read-Ahead Data.
>>>> [ OK ] Started Read and set NIS domainname from
>>>> /etc/sysconfig/network.
>>>> [ OK ] Started Create list of required sta...ce nodes for the
>>>> current kernel.
>>>> Starting Remount Root and Kernel File Systems...
>>>> Starting Create Static Device Nodes in /dev...
>>>> Starting Apply Kernel Variables...
>>>> [ 17.296550] EXT4-fs (mmcblk0p4): re-mounted. Opts: (null)
>>>> [ OK ] Started Apply Kernel Variables.
>>>> [ OK ] Started Remount Root and Kernel File Systems.
>>>> Starting udev Coldplug all Devices...
>>>> Starting Load/Save Random Seed...
>>>> Starting Configure read-only root support...
>>>> Starting Flush Journal to Persistent Storage...
>>>> [ OK ] Started Create Static Device Nodes in /dev.
>>>> [ OK ] Started Load/Save Random Seed.
>>>> [ 17.818547] systemd-journald[427]: Received request to flush
>>>> runtime journal from PID 1
>>>> [ OK ] Reached target Local File Systems (Pre).
>>>> Starting udev Kernel Device Manager...
>>>> [ OK ] Started Flush Journal to Persistent Storage.
>>>> [ OK ] Started Configure read-only root support.
>>>> [ OK ] Started udev Kernel Device Manager.
>>>> [ OK ] Started udev Coldplug all Devices.
>>>> [ 19.146181] cpu cpu0: failed to get clock: -2
>>>> [ 19.218261] cpufreq-dt: probe of cpufreq-dt failed with error -2
>>>> [ 19.708227] ehci-platform 1c1a000.usb: EHCI Host Controller
>>>> [ 19.721852] ehci-platform 1c1a000.usb: new USB bus registered,
>>>> assigned bus number 1
>>>> [ 19.740546] ehci-platform 1c1a000.usb: irq 26, io mem 0x01c1a000
>>>> [ 19.762241] ehci-platform 1c1a000.usb: USB 2.0 started, EHCI 1.00
>>>> [ 19.775259] usb usb1: New USB device found, idVendor=1d6b,
>>>> idProduct=0002
>>>> [ 19.782236] usb usb1: New USB device strings: Mfr=3, Product=2,
>>>> SerialNumber=1
>>>> [ 19.789508] usb usb1: Product: EHCI Host Controller
>>>> [ 19.794416] usb usb1: Manufacturer: Linux
>>>> 4.14.28-201.el7.centos.armv7hl ehci_hcd
>>>> [ 19.801926] usb usb1: SerialNumber: 1c1a000.usb
>>>> [ 19.844670] hub 1-0:1.0: USB hub found
>>>> [ 19.854212] hub 1-0:1.0: 1 port detected
>>>> [ 19.868545] ehci-platform 1c1b000.usb: EHCI Host Controller
>>>> [ 19.882930] ehci-platform 1c1b000.usb: new USB bus registered,
>>>> assigned bus number 2
>>>> [ 19.901798] ehci-platform 1c1b000.usb: irq 27, io mem 0x01c1b000
>>>> [ 19.923267] ehci-platform 1c1b000.usb: USB 2.0 started, EHCI 1.00
>>>> [ 19.936351] usb usb2: New USB device found, idVendor=1d6b,
>>>> idProduct=0002
>>>> [ 19.943225] usb usb2: New USB device strings: Mfr=3, Product=2,
>>>> SerialNumber=1
>>>> [ 19.950493] usb usb2: Product: EHCI Host Controller
>>>> [ 19.955399] usb usb2: Manufacturer: Linux
>>>> 4.14.28-201.el7.centos.armv7hl ehci_hcd
>>>> [ 19.962907] usb usb2: SerialNumber: 1c1b000.usb
>>>> [ 20.008450] hub 2-0:1.0: USB hub found
>>>> [ 20.019233] hub 2-0:1.0: 1 port detected
>>>> [ OK ] Found device /dev/ttyS0.
>>>> [ 20.253371] usb 1-1: new high-speed USB device number 2 using
>>>> ehci-platform
>>>> [ 20.304553] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled
>>>> (timeout=16 sec, nowayout=0)
>>>> [ 20.350267] usb 2-1: new high-speed USB device number 2 using
>>>> ehci-platform
>>>> [ 20.397887] usb 1-1: New USB device found, idVendor=05e3,
>>>> idProduct=0718
>>>> [ 20.404808] usb 1-1: New USB device strings: Mfr=0, Product=1,
>>>> SerialNumber=2
>>>> [ 20.412007] usb 1-1: Product: USB Storage
>>>> [ 20.416058] usb 1-1: SerialNumber: 000000000033
>>>> [ 20.440034] sunxi-rsb 1f03400.rsb: RSB running at 3000000 Hz
>>>> [ 20.492897] usb 2-1: New USB device found, idVendor=0424,
>>>> idProduct=3503
>>>> [ 20.499823] usb 2-1: New USB device strings: Mfr=0, Product=0,
>>>> SerialNumber=0
>>>> [ 20.523676] hub 2-1:1.0: USB hub found
>>>> [ 20.535200] hub 2-1:1.0: 2 ports detected
>>>> [ 20.626373] usb3503 usb-hub: Ports disabled with no control
>>>> interface
>>>> [ OK ] Found device /dev/disk/by-uuid/2CA3-F2A2.
>>>> [ 20.760223] usb3503 usb-hub: switched to HUB mode
>>>> [ 20.765030] usb3503 usb-hub: usb3503_probe: probed in hub mode
>>>> [ OK ] Found device
>>>> /dev/disk/by-uuid/13ad9f52-e2ca-4fd1-83d6-7b0af86a85df.
>>>> Mounting /boot...
>>>> [ 20.966073] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to
>>>> feature incompatibilities
>>>> [FAILED] Failed to mount /boot.
>>>> See 'systemctl status boot.mount' for details.
>>>> [DEPEND] Dependency failed for Local File Systems.
>>>> [DEPEND] Dependency failed for Relabel all filesystems, if necessary.
>>>> [DEPEND] Dependency failed for Migrate local... structure to the new
>>>> structure.
>>>> [DEPEND] Dependency failed for /boot/fw.
>>>> [ OK ] Reached target Timers.
>>>> [ OK ] Reached target Network (Pre).
>>>> [ OK ] Reached target Network.
>>>> [ OK ] Reached target Network is Online.
>>>> [ OK ] Reached target Login Prompts.
>>>> Starting Crash recovery kernel arming...
>>>> [ OK ] Reached target Sockets.
>>>> Starting Import network configuration from initramfs...
>>>> Starting Tell Plymouth To Write Out Runtime Data...
>>>> [ OK ] Started Tell Plymouth To Write Out Runtime Data.
>>>> [ OK ] Found device
>>>> /dev/disk/by-uuid/13b9fbb1-f4bd-4db2-86d8-a802ceb87618.
>>>> Activating swap
>>>> /dev/disk/by-uuid/1...1-f4bd-4db2-86d8-a802ceb87618...
>>>> [ 21.646852] Adding 249852k swap on /dev/mmcblk0p3. Priority:-2
>>>> extents:1 across:249852k SSFS
>>>> [ OK ] Activated swap
>>>> /dev/disk/by-uuid/13b9fbb1-f4bd-4db2-86d8-a802ceb87618.
>>>> [ OK ] Reached target Swap.
>>>> [FAILED] Failed to start Crash recovery kernel arming.
>>>> See 'systemctl status kdump.service' for details.
>>>> [ OK ] Started Import network configuration from initramfs.
>>>> [ OK ] Started Emergency Shell.
>>>> Starting Emergency Shell...
>>>> [ OK ] Reached target Emergency Mode.
>>>> Starting Create Volatile Files and Directories...
>>>> [ 23.733719] random: crng init done
>>>> [ 25.605825] axp20x-rsb sunxi-rsb-3a3: AXP20x variant AXP813 found
>>>> [ OK ] Started Create Volatile Files and Directories.
>>>> Starting Security Auditing Service...
>>>> [ 25.816033] axp20x-rsb sunxi-rsb-3a3: AXP20X driver loaded
>>>> [ OK ] Started Security Auditing Service.
>>>> Starting Update UTMP about System Boot/Shutdown...
>>>> [ OK ] Started Update UTMP about System Boot/Shutdown.
>>>> Starting Update UTMP about System Runlevel Changes...
>>>> [ OK ] Started Update UTMP about System Runlevel Changes.
>>>> Welcome to emergency mode! After logging in, type "journalctl -xPress
>>>> enter for maintenance(or type Control-D to continue): [ 26.911598]
>>>> input: axp20x-pek as
>>>> /devices/platform/soc/1f03400.rsb/sunxi-rsb-3a3/axp221-pek/input/input0
>>>>
>>>> [ 27.082356] ac100-rtc ac100-rtc: rtc core: registered rtc-ac100 as
>>>> rtc0
>>>> [ 27.163368] ac100-rtc ac100-rtc: RTC enabled
>>>> [ 27.272882] usb-storage 1-1:1.0: USB Mass Storage device detected
>>>> [ 27.317836] scsi host0: usb-storage 1-1:1.0
>>>> [ 27.372202] usbcore: registered new interface driver usb-storage
>>>> [ 27.510019] asoc-simple-card sound: dit-hifi <-> 1c21000.spdif
>>>> mapping ok
>>>> [ 27.516919] asoc-simple-card sound: ASoC: no DMI vendor name!
>>>> [ 27.540329] usbcore: registered new interface driver uas
>>>>
>>>> sulogin: failed to execute /bin/bash: Permission denied
>>>> sulogin: failed to execute /bin/sh: Permission denied
>>>> Can not execute su shell
>>>>
>>>> Error getting authority: Error initializing authority: Could not
>>>> connect: No such file or directory (g-io-error-quark, 1)
>>>> [ 31.615654] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to
>>>> feature incompatibilities
>>>> Welcome to emergency mode! After logging in, type "journalctl -xPress
>>>> enter for maintenance(or type Control-D to continue):
>>>> sulogin: failed to execute /bin/bash: Permission denied
>>>> sulogin: failed to execute /bin/sh: Permission denied
>>>> Can not execute su shell
>>>>
>>
That sounds like a corrupted sd card.
WRT installing the kernel, you can go back to this mail
https://lists.centos.org/pipermail/arm-dev/2018-August/003399.html from
a few days ago.
Pablo.
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