[メモ] Raspberry Pi 3 : CentOS7(aarch64)


## 概要
- `uname -a`

    ```shell-session
[root@centos-rpi3 ~]# uname -a
Linux centos-rpi3 4.7.0-1-main #1 SMP PREEMPT Wed Aug 10 15:47:35 UTC 2016 aarch64 aarch64 aarch64 GNU/Linux
[root@centos-rpi3 ~]# lscpu
Architecture:          aarch64
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    1
Core(s) per socket:    4
Socket(s):             1
[root@centos-rpi3 ~]#
```

- kraxel's news さんから: https://www.kraxel.org/blog/2016/08/two-new-images-uploaded/
- Raspberry Pi 3向けに、64ビットのシステムイメージ(CentOS7, Fedora23, 24)を[公開してくれている方のページ](https://www.kraxel.org/repos/rpi2/images/)を、たまたま発見。
- ま、ダウンロード、解凍して、SDに焼いて、ブート、だけなんですけど。

## 環境
- Raspberry Pi 3のみ (64bitなので)
- [`arm64-rpi3-centos7-mainline-20160803.raw.xz`](https://www.kraxel.org/repos/rpi2/images/arm64-rpi3-centos7-mainline-20160803.raw.xz) を使用<br>(xzのサイズ179M、解凍時3GB=3,221,225,472バイト)
- microSD 8GB

## 手順
1. ダウンロード  [`arm64-rpi3-centos7-mainline-20160803.raw.xz`](https://www.kraxel.org/repos/rpi2/images/arm64-rpi3-centos7-mainline-20160803.raw.xz)
2. 解凍
3. SDに焼く
4. ブート
5. ログイン - ユーザ: `root` / パスワード: `pi`
6. 設定
    - システム更新<br>`yum update -y; reboot`
        - `yum install パッケージ名` でインストール
        - `yum search キーワード` で検索
        - `yum info パッケージ名` パッケージ情報
        - `yum check-update` 更新チェック.
        - `yum update [パッケージ名]` 更新。パッケージ名をいれると、そいつだけ。
    - 時計が1970年なってしまう件 => `fake-hwclock`と`ntpd` 設定

        ```bash
curl https://copr-be.cloud.fedoraproject.org/results/jorti/fake-hwclock/epel-7-x86_64/fake-hwclock-0.9-1.fc22/fake-hwclock-0.9-1.el7.centos.noarch.rpm -k > fake-hwclock-0.9-1.el7.centos.noarch.rpm
rpm -ihv ./fake-hwclock-0.9-1.el7.centos.noarch.rpm
systemctl enable fake-hwclock
systemctl start fake-hwclock
systemctl status fake-hwclock
ntpdate 0.centos.pool.ntp.org  # 時刻あわせ.
systemctl enable ntpd
systemctl start ntpd
systemctl status ntpd
#
fake-hwclock              # 一度実行 /etc/fake-hwclock.data 生成.
shutdown -r now           # 再起動.
```
    - ビルド関係のツール

        ```bash
        yum groupinstall "Development Tools" -y
yum install yum-utils -y
```
    - `byobu`

        ```bash
#ソースSRPM取得
wget https://dl.fedoraproject.org/pub/fedora/linux/releases/24/Everything/source/tree/Packages/b/byobu-5.97-2.fc24.src.rpm
#依存してるパッケージ.
yum-builddep byobu-5.97-2.fc24.src.rpm
# ビルド.
rpmbuild --rebuild byobu-5.97-2.fc24.src.rpm
# インストール
yum localinstall -y ~/rpmbuild/RPMS/noarch/byobu-5.97-2.el7.centos.noarch.rpm
```

    - `htop`

        ```bash
wget https://dl.fedoraproject.org/pub/fedora/linux/releases/24/Everything/source/tree/Packages/h/htop-2.0.1-1.fc24.src.rpm
yum-builddep htop-2.0.1-1.fc24.src.rpm
rpmbuild --rebuild htop-2.0.1-1.fc24.src.rpm
yum localinstall -y ~/rpmbuild/RPMS/aarch64/htop-2.0.1-1.el7.centos.aarch64.rpm
```


<!--
    - だめぽい?? EPEL (http://www.tecmint.com/how-to-enable-epel-repository-for-rhel-centos-6-5/)

        ```bash
yum install yum-utils wget
wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-8.noarch.rpm
rpm -ivh epel-release-7-8.noarch.rpm
```
-->

## その他
- nodejsのarm64版 : [node-v6.4.0-linux-arm64.tar.xz](https://nodejs.org/dist/v6.4.0/node-v6.4.0-linux-arm64.tar.xz) => 実行できた.

- `dmesg`

    ```shell-session:dmesg
[root@centos-rpi3 ~]# dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.7.0-1-main (kraxel@pi-three.home.kraxel.org) (gcc version 6.1.1 20160621 (Red Hat 6.1.1-3) (GCC) ) #1 SMP PREEMPT Wed Aug 10 15:47:35 UTC 2016
[    0.000000] Boot CPU: AArch64 Processor [410fd034]
[    0.000000] efi: Getting EFI parameters from FDT:
[    0.000000] efi: UEFI not found.
[    0.000000] cma: Reserved 16 MiB at 0x0000000039000000
[    0.000000] On node 0 totalpages: 241664
[    0.000000]   DMA zone: 3776 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 241664 pages, LIFO batch:31
[    0.000000] percpu: Embedded 20 pages/cpu @ffff80003af8c000 s42520 r8192 d31208 u81920
[    0.000000] pcpu-alloc: s42520 r8192 d31208 u81920 alloc=20*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: enabling workaround for ARM erratum 845719
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 237888
[    0.000000] Kernel command line: dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 elevator=deadline root=/dev/mmcblk0p3 rootfstype=ext4 rootwait
[    0.000000] log_buf_len individual max cpu contribution: 4096 bytes
[    0.000000] log_buf_len total cpu_extra contributions: 12288 bytes
[    0.000000] log_buf_len min size: 16384 bytes
[    0.000000] log_buf_len: 32768 bytes
[    0.000000] early log buf free: 14972(91%)
[    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] software IO TLB [mem 0x34000000-0x38000000] (64MB) mapped at [ffff800034000000-ffff800037ffffff]
[    0.000000] Memory: 842224K/966656K available (7944K kernel code, 695K rwdata, 3316K rodata, 960K init, 279K bss, 108048K reserved, 16384K cma-reserved)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     modules : 0xffff000000000000 - 0xffff000008000000   (   128 MB)
[    0.000000]     vmalloc : 0xffff000008000000 - 0xffff7dffbfff0000   (129022 GB)
[    0.000000]       .text : 0xffff000008080000 - 0xffff000008830000   (  7872 KB)
[    0.000000]     .rodata : 0xffff000008830000 - 0xffff000008b80000   (  3392 KB)
[    0.000000]       .init : 0xffff000008b80000 - 0xffff000008c70000   (   960 KB)
[    0.000000]       .data : 0xffff000008c70000 - 0xffff000008d1dc00   (   695 KB)
[    0.000000]        .bss : 0xffff000008d1dc00 - 0xffff000008d639b4   (   280 KB)
[    0.000000]     fixed   : 0xffff7dfffe7fd000 - 0xffff7dfffec00000   (  4108 KB)
[    0.000000]     PCI I/O : 0xffff7dfffee00000 - 0xffff7dffffe00000   (    16 MB)
[    0.000000]     vmemmap : 0xffff7e0000000000 - 0xffff800000000000   (  2048 GB maximum)
[    0.000000]               0xffff7e0000000000 - 0xffff7e0000ec0000   (    14 MB actual)
[    0.000000]     memory  : 0xffff800000000000 - 0xffff80003b000000   (   944 MB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000]  Build-time adjustment of leaf fanout to 64.
[    0.000000]  RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=4.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=4
[    0.000000] NR_IRQS:64 nr_irqs:64 0
[    0.000010] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 2147483647500ns
[    0.000026] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns
[    0.000074] bcm2835: system timer (irq = 35)
[    0.000462] Architected cp15 timer(s) running at 19.20MHz (phys).
[    0.000473] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
[    0.000483] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[    0.000638] Console: colour dummy device 80x25
[    0.001905] console [tty1] enabled
[    0.001950] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=76800)
[    0.002004] pid_max: default: 32768 minimum: 301
[    0.002122] Security Framework initialized
[    0.002152] SELinux:  Initializing.
[    0.002243] SELinux:  Starting in permissive mode
[    0.002285] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.002320] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.003531] ASID allocator initialised with 65536 entries
[    0.024990] EFI services will not be available.
[    0.048566] Detected VIPT I-cache on CPU1
[    0.048620] CPU1: Booted secondary processor [410fd034]
[    0.064603] Detected VIPT I-cache on CPU2
[    0.064637] CPU2: Booted secondary processor [410fd034]
[    0.080651] Detected VIPT I-cache on CPU3
[    0.080684] CPU3: Booted secondary processor [410fd034]
[    0.080758] Brought up 4 CPUs
[    0.080920] SMP: Total of 4 processors activated.
[    0.080950] CPU features: detected feature: 32-bit EL0 Support
[    0.080985] CPU: All CPU(s) started at EL2
[    0.081035] alternatives: patching kernel code
[    0.082124] devtmpfs: initialized
[    0.088667] DMI not present or invalid.
[    0.088992] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.089803] pinctrl core: initialized pinctrl subsystem
[    0.091472] NET: Registered protocol family 16
[    0.104756] cpuidle: using governor menu
[    0.105090] vdso: 2 pages (1 code @ ffff000008836000, 1 data @ ffff000008c74000)
[    0.105149] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[    0.106320] DMA: preallocated 256 KiB pool for atomic allocations
[    0.106651] Serial: AMBA PL011 UART driver
[    0.141512] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.142629] ACPI: Interpreter disabled.
[    0.143534] vgaarb: loaded
[    0.143925] SCSI subsystem initialized
[    0.144168] libata version 3.00 loaded.
[    0.144574] usbcore: registered new interface driver usbfs
[    0.144680] usbcore: registered new interface driver hub
[    0.144805] usbcore: registered new device driver usb
[    0.145628] pps_core: LinuxPPS API ver. 1 registered
[    0.145661] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.145732] PTP clock support registered
[    0.145979] dmi: Firmware registration failed.
[    0.146229] Advanced Linux Sound Architecture Driver Initialized.
[    0.146998] NetLabel: Initializing
[    0.147025] NetLabel:  domain hash size = 128
[    0.147050] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.147136] NetLabel:  unlabeled traffic allowed by default
[    0.147632] clocksource: Switched to clocksource arch_sys_counter
[    0.147792] VFS: Disk quotas dquot_6.6.0
[    0.147883] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.148410] simple-framebuffer 3d8ba000.framebuffer: framebuffer at 0x3d8ba000, 0x339900 bytes, mapped to 0xffff000009000000
[    0.148468] simple-framebuffer 3d8ba000.framebuffer: format=r5g6b5, mode=1776x952x16, linelength=3552
[    0.170228] Console: switching to colour frame buffer device 222x59
[    0.189981] simple-framebuffer 3d8ba000.framebuffer: fb0: simplefb registered!
[    0.190352] pnp: PnP ACPI: disabled
[    0.202058] NET: Registered protocol family 2
[    0.202911] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[    0.203181] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[    0.203539] TCP: Hash tables configured (established 8192 bind 8192)
[    0.203900] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.204071] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.204431] NET: Registered protocol family 1
[    0.204905] RPC: Registered named UNIX socket transport module.
[    0.205043] RPC: Registered udp transport module.
[    0.205150] RPC: Registered tcp transport module.
[    0.205256] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.205404] PCI: CLS 0 bytes, default 128
[    0.205723] Unpacking initramfs...
[    1.004617] Freeing initrd memory: 10400K (ffff80003a10b000 - ffff80003ab33000)
[    1.011964] kvm [1]: 8-bit VMID
[    1.012064] kvm [1]: Hyp mode initialized successfully
[    1.012337] kvm [1]: virtual timer IRQ4
[    1.014836] futex hash table entries: 1024 (order: 5, 131072 bytes)
[    1.015106] audit: initializing netlink subsys (disabled)
[    1.015315] audit: type=2000 audit(1.007:1): initialized
[    1.016064] workingset: timestamp_bits=44 max_order=18 bucket_order=0
[    1.033317] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    1.034792] NFS: Registering the id_resolver key type
[    1.034957] Key type id_resolver registered
[    1.035055] Key type id_legacy registered
[    1.035405] fuse init (API version 7.25)
[    1.036463] 9p: Installing v9fs 9p2000 file system support
[    1.040359] Key type asymmetric registered
[    1.045592] Asymmetric key parser 'x509' registered
[    1.050580] io scheduler noop registered
[    1.055829] io scheduler cfq registered
[    1.064787] clk: couldn't get clock 0 for /soc/pwm@7e20c000
[    1.074320] xenfs: not registering filesystem on non-xen platform
[    1.084713] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[    1.092406] SuperH (H)SCI(F) driver initialized
[    1.098103] msm_serial: driver initialized
[    2.006650] bcm2835-rng 3f104000.rng: hwrng registered
[    2.012256] Unable to detect cache hierarchy from DT for CPU 0
[    2.024856] loop: module loaded
[    2.033106] tun: Universal TUN/TAP device driver, 1.6
[    2.038269] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[    2.043997] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[    2.049108] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    2.054336] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.3.0-k
[    2.059523] igb: Copyright (c) 2007-2014 Intel Corporation.
[    2.064759] igbvf: Intel(R) Gigabit Virtual Function Network Driver - version 2.0.2-k
[    2.069999] igbvf: Copyright (c) 2009 - 2012 Intel Corporation.
[    2.075284] sky2: driver version 1.30
[    2.081162] VFIO - User Level meta-driver version: 0.3
[    2.089112] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    2.094365] ehci-pci: EHCI PCI platform driver
[    2.099582] ehci-platform: EHCI generic platform driver
[    2.104895] ehci-msm: Qualcomm On-Chip EHCI Host Controller
[    2.110024] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    2.115044] ohci-pci: OHCI PCI platform driver
[    2.120122] ohci-platform: OHCI generic platform driver
[    2.125378] usbcore: registered new interface driver usb-storage
[    2.131774] mousedev: PS/2 mouse device common for all mice
[    2.137691] i2c /dev entries driver
[    2.142867] i2c-bcm2835 3f205000.i2c: Could not get clock
[    2.147984] i2c-bcm2835 3f804000.i2c: Could not get clock
[    2.152898] i2c-bcm2835 3f805000.i2c: Could not get clock
[    2.159870] bcm2835-wdt 3f100000.watchdog: Broadcom BCM2835 watchdog timer
[    2.165364] sdhci: Secure Digital Host Controller Interface driver
[    2.170319] sdhci: Copyright(c) Pierre Ossman
[    2.175282] Synopsys Designware Multimedia Card Interface Driver
[    2.181110] sdhci-pltfm: SDHCI platform and OF driver helper
[    2.191320] ledtrig-cpu: registered to indicate activity on CPUs
[    2.197393] usbcore: registered new interface driver usbhid
[    2.202341] usbhid: USB HID core driver
[    2.209985] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[    2.216781] NET: Registered protocol family 17
[    2.221840] 9pnet: Installing 9P2000 support
[    2.226822] Key type dns_resolver registered
[    2.232719] registered taskstats version 1
[    2.237931] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 72, base_baud = 0) is a PL011 rev2
[    3.250454] console [ttyAMA0] enabled
[    3.262739] i2c-bcm2835 3f805000.i2c: Could not read clock-frequency property
[    3.323648] mmc0: unable to initialise DMA channels. Falling back to PIO
[    3.411659] mmc0: loaded - DMA disabled
[    3.459664] mmc1: SDHCI controller on 3f300000.sdhci [3f300000.sdhci] using PIO
[    3.475676] raspberrypi-firmware soc:firmware: Attached to firmware from 2016-08-10 20:36
[    3.492568] 3f980000.usb supply vusb_d not found, using dummy regulator
[    3.495348] mmc0: host does not support reading read-only switch, assuming write-enable
[    3.497848] mmc0: new high speed SDHC card at address 0007
[    3.502544] I/O scheduler deadline not found
[    3.502650] mmcblk0: mmc0:0007 SD8GB 7.42 GiB
[    3.504961]  mmcblk0: p1 p2 p3
[    3.556495] 3f980000.usb supply vusb_a not found, using dummy regulator
[    3.576355] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    3.588748] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    3.601063] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    3.614577] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    3.745754] mmc1: new SDIO card at address 0001
[    3.807661] dwc2 3f980000.usb: Specified GNPTXFDEP=1024 > 256
[    3.818534] dwc2 3f980000.usb: EPs: 8, dedicated fifos, 4080 entries in SPRAM
[    3.831565] dwc2 3f980000.usb: DWC OTG Controller
[    3.841388] dwc2 3f980000.usb: new USB bus registered, assigned bus number 1
[    3.853555] dwc2 3f980000.usb: irq 41, io mem 0x00000000
[    3.864835] hub 1-0:1.0: USB hub found
[    3.873577] hub 1-0:1.0: 1 port detected
[    3.883288] hctosys: unable to open rtc device (rtc0)
[    3.896891] ALSA device list:
[    3.904765]   No soundcards found.
[    3.919314] Freeing unused kernel memory: 960K (ffff800000b80000 - ffff800000c70000)
[    3.951193] NET: Registered protocol family 10
[    3.961968] systemd[1]: Inserted module 'ipv6'
[    3.974089] random: systemd urandom read with 9 bits of entropy available
[    4.012881] systemd[1]: systemd 219 running in system mode. (+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID +ELFUTILS +KMOD +IDN)
[    4.036869] systemd[1]: Detected architecture arm64.
[    4.047245] systemd[1]: Running in initial RAM disk.
[    4.075481] systemd[1]: Set hostname to <centos-rpi3>.
[    4.259694] usb 1-1: new high-speed USB device number 2 using dwc2
[    4.285985] systemd[1]: Reached target Swap.
[    4.295876] systemd[1]: Starting Swap.
[    4.311291] systemd[1]: Reached target Local File Systems.
[    4.322311] systemd[1]: Starting Local File Systems.
[    4.339828] systemd[1]: Created slice -.slice.
[    4.349770] systemd[1]: Starting -.slice.
[    4.365608] systemd[1]: Created slice System Slice.
[    4.375990] systemd[1]: Starting System Slice.
[    4.392197] systemd[1]: Listening on udev Control Socket.
[    4.402977] systemd[1]: Starting udev Control Socket.
[    4.419389] systemd[1]: Listening on udev Kernel Socket.
[    4.430014] systemd[1]: Starting udev Kernel Socket.
[    4.446010] systemd[1]: Reached target Timers.
[    4.455605] systemd[1]: Starting Timers.
[    4.468704] hub 1-1:1.0: USB hub found
[    4.468783] hub 1-1:1.0: 5 ports detected
[    4.487880] systemd[1]: Reached target Slices.
[    4.497327] systemd[1]: Starting Slices.
[    4.512126] systemd[1]: Listening on Journal Socket.
[    4.522098] systemd[1]: Starting Journal Socket.
[    4.532493] systemd[1]: Started Load Kernel Modules.
[    4.556191] systemd[1]: Starting Journal Service...
[    4.572654] systemd[1]: Started dracut ask for additional cmdline parameters.
[    4.587215] systemd[1]: Starting Apply Kernel Variables...
[    4.606305] systemd[1]: Starting Setup Virtual Console...
[    4.628662] systemd[1]: Reached target Sockets.
[    4.638411] systemd[1]: Starting Sockets.
[    4.650091] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[    4.671868] systemd[1]: Started dracut cmdline hook.
[    4.682722] systemd[1]: Started dracut pre-udev hook.
[    4.700901] systemd[1]: Started Journal Service.
[    4.751715] usb 1-1.1: new high-speed USB device number 3 using dwc2
[    5.117363] uart-pl011 3f201000.serial: no DMA platform data
[    5.367574] random: nonblocking pool is initialized
[    5.673927] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null)
[    6.538422] systemd-journald[1061]: Received SIGTERM from PID 1 (systemd).
[    7.212541] SELinux: 32768 avtab hash slots, 112394 rules.
[    7.352682] SELinux: 32768 avtab hash slots, 112394 rules.
[    7.715604] SELinux:  8 users, 105 roles, 4954 types, 302 bools, 1 sens, 1024 cats
[    7.715653] SELinux:  83 classes, 112394 rules
[    7.751197] SELinux:  Permission validate_trans in class security not defined in policy.
[    7.763760] SELinux:  Permission module_load in class system not defined in policy.
[    7.776145] SELinux:  Class netlink_iscsi_socket not defined in policy.
[    7.787235] SELinux:  Class netlink_fib_lookup_socket not defined in policy.
[    7.798722] SELinux:  Class netlink_connector_socket not defined in policy.
[    7.810140] SELinux:  Class netlink_netfilter_socket not defined in policy.
[    7.821493] SELinux:  Class netlink_generic_socket not defined in policy.
[    7.832627] SELinux:  Class netlink_scsitransport_socket not defined in policy.
[    7.844294] SELinux:  Class netlink_rdma_socket not defined in policy.
[    7.855107] SELinux:  Class netlink_crypto_socket not defined in policy.
[    7.866067] SELinux:  Permission audit_read in class capability2 not defined in policy.
[    7.878367] SELinux:  Class binder not defined in policy.
[    7.888016] SELinux:  Class cap_userns not defined in policy.
[    7.897994] SELinux:  Class cap2_userns not defined in policy.
[    7.908041] SELinux: the above unknown classes and permissions will be allowed
[    7.919639] SELinux:  Completing initialization.
[    7.919647] SELinux:  Setting up existing superblocks.
[    7.966311] audit: type=1403 audit(7.959:2): policy loaded auid=4294967295 ses=4294967295
[    8.011488] systemd[1]: Successfully loaded SELinux policy in 1.059160s.
[    8.450870] systemd[1]: Relabelled /dev and /run in 242.854ms.
[    8.665324] SELinux:  Context system_u:object_r:systemd_hwdb_unit_file_t:s0 is not valid (left unmapped).
[    8.773029] SELinux:  Context system_u:object_r:systemd_resolved_unit_file_t:s0 is not valid (left unmapped).
[    8.791925] SELinux:  Context system_u:object_r:syslogd_unit_file_t:s0 is not valid (left unmapped).
[    8.845142] SELinux:  Context system_u:object_r:systemd_modules_load_unit_file_t:s0 is not valid (left unmapped).
[    9.176349] systemd-readahead[1821]: Bumped block_nr parameter of 179:0 to 20480. This is a temporary hack and should be removed one day.
[    9.179019] audit: type=1400 audit(9.171:3): avc:  denied  { read } for  pid=1814 comm="systemd-journal" name="run" dev="mmcblk0p3" ino=373 scontext=system_u:system_r:syslogd_t:s0 tcontext=unconfined_u:object_r:unlabeled_t:s0 tclass=lnk_file permissive=1
[    9.462910] EXT4-fs (mmcblk0p3): re-mounted. Opts: (null)
[    9.711015] systemd-journald[1814]: Received request to flush runtime journal from PID 1
[   10.816656] [drm] Initialized drm 1.1.0 20060810
[   10.913504] smsc95xx v1.0.4
[   10.947978] vc4-drm soc:gpu: bound 3f902000.hdmi (ops vc4_hdmi_ops [vc4])
[   10.960285] vc4-drm soc:gpu: bound 3f206000.pixelvalve (ops vc4_crtc_ops [vc4])
[   10.973887] vc4-drm soc:gpu: bound 3f207000.pixelvalve (ops vc4_crtc_ops [vc4])
[   10.986709] vc4-drm soc:gpu: bound 3f807000.pixelvalve (ops vc4_crtc_ops [vc4])
[   10.999335] vc4-drm soc:gpu: bound 3f400000.hvs (ops vc4_hvs_ops [vc4])
[   11.011284] vc4-drm soc:gpu: bound 3fc00000.v3d (ops vc4_v3d_ops [vc4])
[   11.023522] checking generic (3d8ba000 339900) vs hw (0 ffffffffffffffff)
[   11.023538] fb: switching to vc4drmfb from simple
[   11.033676] Console: switching to colour dummy device 80x25
[   11.034799] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:6c:0f:31
[   11.035033] usbcore: registered new interface driver smsc95xx
[   11.063551] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[   11.070282] [drm] No driver support for vblank timestamp query.
[   11.118881] bcm2835-clk 3f101000.cprman: pllh: rate out of spec: 4620000000 vs (600000000, 3000000000)
[   11.130514] Console: switching to colour frame buffer device 240x75
[   11.157194] brcmfmac: brcmf_sdio_drivestrengthinit: No SDIO Drive strength init done for chip 43430 rev 1 pmurev 24
[   11.160506] usbcore: registered new interface driver brcmfmac
[   11.219495] vc4-drm soc:gpu: fb0:  frame buffer device
[   11.628526] Adding 767996k swap on /dev/mmcblk0p2.  Priority:-1 extents:1 across:767996k SS
[   12.420547] audit: type=1400 audit(12.415:4): avc:  denied  { read } for  pid=2547 comm="auditd" name="run" dev="mmcblk0p3" ino=373 scontext=system_u:system_r:auditd_t:s0 tcontext=unconfined_u:object_r:unlabeled_t:s0 tclass=lnk_file permissive=1
[   12.462050] audit: type=1305 audit(12.447:5): audit_pid=2547 old=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:auditd_t:s0 res=1
[   13.692341] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Dec 15 2015 18:10:45 version 7.45.41.23 (r606571) FWID 01-cc4eda9c
[   13.781435] SELinux:  Context system_u:object_r:systemd_resolved_exec_t:s0 is not valid (left unmapped).
[   13.841859] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[   13.864683] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   14.268171] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30)
[   14.406199] SELinux:  Context system_u:object_r:systemd_rfkill_exec_t:s0 is not valid (left unmapped).
[   14.581793] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   15.427748] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   15.449604] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[root@centos-rpi3 ~]#
```

- レッドハット,CentOS,Fedora系は詳しくないので...