[[FrontPage]]
#contents
-[[ある日突然届いた>https://www.switch-science.com/catalog/6370/]]

|SoC|Broadcom BCM2711|
|CPU|Arm Cortex A72 1.5GHz Quad-core|
|GPU|VideoCore VI|
|Memory|8GB|

[[Arm]][[:Arm]][[:Arm Cortex A72]]
*スペック [#wd651471]

-CPU:Cortex A72 quad core
-cpuinfo
 $ cat /proc/cpuinfo
 processor       : 0
 BogoMIPS        : 108.00
 Features        : fp asimd evtstrm crc32 cpuid
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd08
 CPU revision    : 3
 
 processor       : 1
 BogoMIPS        : 108.00
 Features        : fp asimd evtstrm crc32 cpuid
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd08
 CPU revision    : 3
 
 processor       : 2
 BogoMIPS        : 108.00
 Features        : fp asimd evtstrm crc32 cpuid
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd08
 CPU revision    : 3
 
 processor       : 3
 BogoMIPS        : 108.00
 Features        : fp asimd evtstrm crc32 cpuid
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd08
 CPU revision    : 3
 
 Hardware        : BCM835
 Revision        : d03114
 Serial          : 10000000afb3582a7
 Model           : Raspberry Pi 4 Model B Rev 1.4
-auxv
 $ cat /proc/self/auxv | xxd -e -g 8
 00000000: 0000000000000021 0000007fa8fe9000  !...............
 00000010: 0000000000000033 0000000000001270  3.......p.......
 00000020: 0000000000000010 0000000000000887  ................
 00000030: 0000000000000006 0000000000001000  ................
 00000040: 0000000000000011 0000000000000064  ........d.......
 00000050: 0000000000000003 000000556f2b4040  ........@@+oU...
 00000060: 0000000000000004 0000000000000038  ........8.......
 00000070: 0000000000000005 0000000000000009  ................
 00000080: 0000000000000007 0000007fa8fbb000  ................
 00000090: 0000000000000008 0000000000000000  ................
 000000a0: 0000000000000009 000000556f2b6570  ........pe+oU...
 000000b0: 000000000000000b 00000000000003e8  ................
 000000c0: 000000000000000c 00000000000003e8  ................
 000000d0: 000000000000000d 00000000000003e8  ................
 000000e0: 000000000000000e 00000000000003e8  ................
 000000f0: 0000000000000017 0000000000000000  ................
 00000100: 0000000000000019 0000007fe2413c08  .........<A.....
 00000110: 000000000000001a 0000000000000000  ................
 00000120: 000000000000001f 0000007fe2414fef  .........OA.....
 00000130: 000000000000000f 0000007fe2413c18  .........<A.....
 00000140: 0000000000000000 0000000000000000  ................
-lscpu
 $ 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
 Vendor ID:           ARM
 Model:               3
 Model name:          Cortex-A72
 Stepping:            r0p3
 CPU max MHz:         1500.0000
 CPU min MHz:         600.0000
 BogoMIPS:            108.00
 Flags:               fp asimd evtstrm crc32 cpuid
-OS
 $ lsb_release -a
 No LSB modules are available.
 Distributor ID: Debian
 Description:    Debian GNU/Linux 10 (buster)
 Release:        10
 Codename:       buster
 $ cat /etc/debian_version
 10.4
--ベースのイメージはDebian 10.4
-kernel
 $ uname -a
 Linux raspberrypi 5.4.42-v8+ #1319 SMP PREEMPT Wed May 20 14:18:56 BST 2020 aarch64 GNU/Linux
--64bit版が提供されている
-meminfo
 $ cat /proc/meminfo
 MemTotal:        8003796 kB
 MemFree:         7392420 kB
 MemAvailable:    7494096 kB
 Buffers:           10336 kB
 Cached:           321616 kB
 SwapCached:            0 kB
 Active:           233244 kB
 Inactive:         128112 kB
 Active(anon):     169184 kB
 Inactive(anon):      388 kB
 Active(file):      64060 kB
 Inactive(file):   127724 kB
 Unevictable:      139372 kB
 Mlocked:              16 kB
 SwapTotal:        102396 kB
 SwapFree:         102396 kB
 Dirty:                 8 kB
 Writeback:             0 kB
 AnonPages:        168848 kB
 Mapped:           160636 kB
 Shmem:            140172 kB
 KReclaimable:      20392 kB
 Slab:              44420 kB
 SReclaimable:      20392 kB
 SUnreclaim:        24028 kB
 KernelStack:        3104 kB
 PageTables:         3616 kB
 NFS_Unstable:          0 kB
 Bounce:                0 kB
 WritebackTmp:          0 kB
 CommitLimit:     4104292 kB
 Committed_AS:     974420 kB
 VmallocTotal:   262930368 kB
 VmallocUsed:        8784 kB
 VmallocChunk:          0 kB
 Percpu:              688 kB
 CmaTotal:         262144 kB
 CmaFree:          219264 kB
--先頭行がたしかに8GB分の容量を示している
-gcc
 $ gcc --version
 gcc (Debian 8.3.0-6) 8.3.0
 Copyright (C) 2018 Free Software Foundation, Inc.
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-cmake
 $ cmake --version
 cmake version 3.13.4
 
 CMake suite maintained and supported by Kitware (kitware.com/cmake).
--cmakeはデフォルトのイメージには入ってないのでaptでインストールする
-ccache
 $ ccache --version
 ccache version 3.6
 
 Copyright (C) 2002-2007 Andrew Tridgell
 Copyright (C) 2009-2019 Joel Rosdahl
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
 Foundation; either version 3 of the License, or (at your option) any later
 version.
--ccacheもデフォルトのイメージには入ってないので、aptでインストールする
-UART Debug console
--3.3V 115200 8N1
--[[The Raspberry Pi UARTs - Raspberry Pi Documentation>https://www.raspberrypi.org/documentation/configuration/uart.md]]&note{raspberry-pi-uart:[[The Raspberry Pi UARTs - Raspberry Pi Documentation>https://www.raspberrypi.org/documentation/configuration/uart.md]], 2019-07-08閲覧};

*FlashするImage [#q9333434]
-2020-05-27-raspios-buster-arm64
-8GB版がリリースされると同時に
--Raspbian OS という名称は廃止され、Raspberry Pi OS という名前に変更。
--同時に64bit版のRaspberry Pi OSが試験的に提供されるようになった
-Windows から EtcherでFlash

*初期設定 [#bb7e368c]
-GUIでログイン
-HDMI0につなぐ
-microHDMI
-GUIで地域や言語などの設定
-パッケージの更新
-piのパスワード設定
-raspbi-config
--Interface -> SSH でSSHを有効
-[[参考>https://www.raspberrypi.org/documentation/remote-access/ssh/]]&note{note-raspberry-pi-4-raspi-config-ssh:[[SSH (Secure Shell) - Raspberry Pi Documentation>https://www.raspberrypi.org/documentation/remote-access/ssh/]], 2020-05-31閲覧};
-sshのPasswordAuthorizeがデフォルトnoになってるので、yesになって再起動

-インストール
 $ sudo apt-get -y install vim ccache cmake openjdk-11-jre-headless build-essential strace libgtk-3-dev
-ssh鍵の生成
 $ ssh-keygen -t ecdsa -C pi@raspberrypi-4-8gb
-Gitのコンフィグ
 $ git config --global user.name "Tomoaki Teshima"
 $ git config --global user.email tomoaki.teshima@gmail.com

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