#contents
|SoC|Rockchip RK3399|
|CPU|Cortex A53 4Core+A72 2.0GHz 2Core|
|GPU|Mali-T860 MP4 Quad-Core|
|Memory|2GB Dual-Channel DDR3|

*スペック [#zb52847b]
-CPU:Cortex-A53 Quad core 1.5GHz + Cortex-A72 Dual core 2.0GHz
-Architecture:Armv8
-cpuinfo
 firefly@firefly:~$ cat /proc/cpuinfo
 processor       : 0
 BogoMIPS        : 48.00
 Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd03
 CPU revision    : 4
 
 processor       : 1
 BogoMIPS        : 48.00
 Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd03
 CPU revision    : 4
 
 processor       : 2
 BogoMIPS        : 48.00
 Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd03
 CPU revision    : 4
 
 processor       : 3
 BogoMIPS        : 48.00
 Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd03
 CPU revision    : 4
 
 processor       : 4
 BogoMIPS        : 48.00
 Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd08
 CPU revision    : 2
 
 processor       : 5
 BogoMIPS        : 48.00
 Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32
 CPU implementer : 0x41
 CPU architecture: 8
 CPU variant     : 0x0
 CPU part        : 0xd08
 CPU revision    : 2
 
 Serial          : 0000000000000000
-auxv
 $ LD_SHOW_AUXV=1 ls
 AT_SYSINFO_EHDR:      0x7f7937d000
 AT_HWCAP:             ff
 AT_PAGESZ:            4096
 AT_CLKTCK:            100
 AT_PHDR:              0x5593973040
 AT_PHENT:             56
 AT_PHNUM:             9
 AT_BASE:              0x7f7934d000
 AT_FLAGS:             0x0
 AT_ENTRY:             0x5593978940
 AT_UID:               1000
 AT_EUID:              1000
 AT_GID:               1000
 AT_EGID:              1000
 AT_SECURE:            0
 AT_RANDOM:            0x7fe6ca4308
 AT_EXECFN:            /usr/bin/ls
 AT_PLATFORM:          aarch64
  
 0000000000000021 0000007fac7b8000
 0000000000000010 00000000000000ff
 0000000000000006 0000000000001000
 0000000000000011 0000000000000064
 0000000000000003 00000055929c8040
 0000000000000004 0000000000000038
 0000000000000005 0000000000000009
 0000000000000007 0000007fac788000
 0000000000000008 0000000000000000
 0000000000000009 00000055929ca0a4
 000000000000000b 00000000000003e8
 000000000000000c 00000000000003e8
 000000000000000d 00000000000003e8
 000000000000000e 00000000000003e8
 0000000000000017 0000000000000000
 0000000000000019 0000007fd967dce8
 000000000000001f 0000007fd967efeb
 000000000000000f 0000007fd967dcf8
 0000000000000000 0000000000000000
-lscpu
 $ lscpu
 Architecture:        aarch64
 CPU op-mode(s):      32-bit, 64-bit
 Byte Order:          Little Endian
 CPU(s):              6
 On-line CPU(s) list: 0-5
 Thread(s) per core:  1
 Core(s) per socket:  3
 Socket(s):           2
 Vendor ID:           ARM
 Model:               4
 Model name:          Cortex-A53
 Stepping:            r0p4
 CPU max MHz:         1800.0000
 CPU min MHz:         408.0000
 BogoMIPS:            48.00
 Flags:               fp asimd evtstrm aes pmull sha1 sha2 crc32
-cpufreq
 $ sudo cat /sys/bus/cpu/devices/cpu*/cpufreq/cpuinfo_max_freq
 1416000
 1416000
 1416000
 1416000
 1800000
 1800000
-kernel
 $ uname -a
 Linux firefly 4.4.194+ #90 SMP Sat May 28 13:05:54 CST 2022 aarch64 aarch64 aarch64 GNU/Linux
-OS
 $ lsb_release -a
 No LSB modules are available.
 Distributor ID: Ubuntu
 Description:    Ubuntu 20.04.4 LTS
 Release:        20.04
 Codename:       focal
-gcc
 $ gcc --version
 gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
 Copyright (C) 2019 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.
 
-clinfo
 $ clinfo
 arm_release_ver of this libmali is 'r18p0-01rel0', rk_so_ver is '4'.Number of platforms                               1
   Platform Name                                   ARM Platform
   Platform Vendor                                 ARM
   Platform Version                                OpenCL 1.2 v1.r18p0-01rel0.ddd394a39c9049aa64d45a44032b5335
   Platform Profile                                FULL_PROFILE
   Platform Extensions                             cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_3d_image_writes cl_khr_fp64 cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp16 cl_khr_icd cl_khr_egl_image cl_khr_image2d_from_buffer cl_arm_core_id cl_arm_printf cl_arm_thread_limit_hint cl_arm_non_uniform_work_group_size cl_arm_import_memory
   Platform Extensions function suffix             ARM
 
   Platform Name                                   ARM Platform
 Number of devices                                 1
   Device Name                                     Mali-T860
   Device Vendor                                   ARM
   Device Vendor ID                                0x8602000
   Device Version                                  OpenCL 1.2 v1.r18p0-01rel0.ddd394a39c9049aa64d45a44032b5335
   Driver Version                                  1.2
   Device OpenCL C Version                         OpenCL C 1.2 v1.r18p0-01rel0.ddd394a39c9049aa64d45a44032b5335
   Device Type                                     GPU
   Device Profile                                  FULL_PROFILE
   Device Available                                Yes
   Compiler Available                              Yes
   Linker Available                                Yes
   Max compute units                               4
   Max clock frequency                             5MHz
   Device Partition                                (core)
     Max number of sub-devices                     0
     Supported partition types                     None
     Supported affinity domains                    (n/a)
   Max work item dimensions                        3
   Max work item sizes                             256x256x256
   Max work group size                             256
   Preferred work group size multiple              4
   Preferred / native vector sizes                 
     char                                                16 / 16      
     short                                                8 / 8       
     int                                                  4 / 4       
     long                                                 2 / 2       
     half                                                 8 / 8        (cl_khr_fp16)
     float                                                4 / 4       
     double                                               2 / 2        (cl_khr_fp64)
   Half-precision Floating-point support           (cl_khr_fp16)
     Denormals                                     Yes
     Infinity and NANs                             Yes
     Round to nearest                              Yes
     Round to zero                                 Yes
     Round to infinity                             Yes
     IEEE754-2008 fused multiply-add               Yes
     Support is emulated in software               No
   Single-precision Floating-point support         (core)
     Denormals                                     Yes
     Infinity and NANs                             Yes
     Round to nearest                              Yes
     Round to zero                                 Yes
     Round to infinity                             Yes
     IEEE754-2008 fused multiply-add               Yes
     Support is emulated in software               No
     Correctly-rounded divide and sqrt operations  No
   Double-precision Floating-point support         (cl_khr_fp64)
     Denormals                                     Yes
     Infinity and NANs                             Yes
     Round to nearest                              Yes
     Round to zero                                 Yes
     Round to infinity                             Yes
     IEEE754-2008 fused multiply-add               Yes
     Support is emulated in software               No
   Address bits                                    64, Little-Endian
   Global memory size                              2050433024 (1.91GiB)
   Error Correction support                        No
   Max memory allocation                           512608256 (488.9MiB)
   Unified memory for Host and Device              Yes
   Minimum alignment for any data type             128 bytes
   Alignment of base address                       1024 bits (128 bytes)
   Global Memory cache type                        Read/Write
   Global Memory cache size                        262144 (256KiB)
   Global Memory cache line size                   64 bytes
   Image support                                   Yes
     Max number of samplers per kernel             16
     Max size for 1D images from buffer            65536 pixels
     Max 1D or 2D image array size                 2048 images
     Base address alignment for 2D image buffers   32 bytes
     Pitch alignment for 2D image buffers          16 pixels
     Max 2D image size                             65536x65536 pixels
     Max 3D image size                             65536x65536x65536 pixels
     Max number of read image args                 128
     Max number of write image args                8
   Local memory type                               Global
   Local memory size                               32768 (32KiB)
   Max number of constant args                     8
   Max constant buffer size                        65536 (64KiB)
   Max size of kernel argument                     1024
   Queue properties                                
     Out-of-order execution                        Yes
     Profiling                                     Yes
   Prefer user sync for interop                    No
   Profiling timer resolution                      1000ns
   Execution capabilities                          
     Run OpenCL kernels                            Yes
     Run native kernels                            No
   printf() buffer size                            1048576 (1024KiB)
   Built-in kernels                                (n/a)
   Device Extensions                               cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_3d_image_writes cl_khr_fp64 cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp16 cl_khr_icd cl_khr_egl_image cl_khr_image2d_from_buffer cl_arm_core_id cl_arm_printf cl_arm_thread_limit_hint cl_arm_non_uniform_work_group_size cl_arm_import_memory
 
 NULL platform behavior
   clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  ARM Platform
   clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [ARM]
   clCreateContext(NULL, ...) [default]            Success [ARM]
   clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  Success (1)
     Platform Name                                 ARM Platform
     Device Name                                   Mali-T860
   clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
   clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  Success (1)
     Platform Name                                 ARM Platform
     Device Name                                   Mali-T860
   clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
   clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
   clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  Success (1)
     Platform Name                                 ARM Platform
     Device Name                                   Mali-T860
 
 ICD loader properties
   ICD loader Name                                 OpenCL ICD Loader
   ICD loader Vendor                               OCL Icd free software
   ICD loader Version                              2.2.11
   ICD loader Profile                              OpenCL 2.1
-cmake
 $ cmake --version
 cmake version 3.16.3
 
 CMake suite maintained and supported by Kitware (kitware.com/cmake).
-ccache
 $ ccache --version
 ccache version 3.7.7
 
 Copyright (C) 2002-2007 Andrew Tridgell
 Copyright (C) 2009-2020 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.
-UART Debug console
--[[1500000 8N1>http://wiki.t-firefly.com/en/ROC-RK3399-PC/debug.html]]&note{rk3399-serial-debug-console:[[Serial Debug — Firefly Wiki>http://wiki.t-firefly.com/en/ROC-RK3399-PC/debug.html]], 2019-07-08閲覧};
--5V?
-Firefly RK3399

*その他情報 [#y739b21e]
-[[Firefly | Focus on establish an open source platform based on cutting-edge technology>http://en.t-firefly.com/en/firenow/Firefly_RK3399/Specifications/]]&note{firefly-specification-official:[[Firefly | Focus on establish an open source platform based on cutting-edge technology>http://en.t-firefly.com/en/firenow/Firefly_RK3399/Specifications/]], 2017-03-21閲覧};
-[[Firefly-RK3399:Six-Core 64-bit High-Performance Platform by Firefly team ― Kickstarter>https://www.kickstarter.com/projects/1771382379/firefly-rk3399-six-core-64-bit-high-performance-pl]]&note{firefly-kickstarter-rk3399:[[Firefly-RK3399:Six-Core 64-bit High-Performance Platform by Firefly team ― Kickstarter>https://www.kickstarter.com/projects/1771382379/firefly-rk3399-six-core-64-bit-high-performance-pl]], 2016-12-05募集開始, 2017-01-10募集終了, 60,480$ 230backers, 2017-03-21閲覧};
-2017年3月21日到着
-Development Kit II にpledge
-2G RAM と16GeMMCで149$
-Cortex A72(2コア)とA53(4コア)の合計6コア、2.0GHz
-GPU はMali T860
-専用のデバッグシリアルコンソールUSBデバイスも同梱されている
-シリアルコンソールのボーレートは1500000(一般的な値では無いので注意)

* セットアップ [#rcf37304]
-まずはフラッシュストレージの消去から
-Minimal イメージをインストールしたので、ユーザがrootしかいない
 groupadd -g 1000 firefly
 useradd -g firefly --uid 1000 firefly
 mkdir -p /home/firefly
 vim /etc/passwd
 # rewrite shell from /bin/sh to /bin/bash
 visudo
 # rewrite admin to wheel
 addgroup wheel
 usermod -aG wheel firefly
 nmcli dev wifi connect xxxxxxxx password xxxxxxxxx
-当然xxxxは適切なものに置き換える
-ここからはSSH接続で
 sudo chown -R /home/firefly
 sudo mkdir /mnt/sdcard
 blkid
 sudo vim /etc/fstab
 sudo dpkg-reconfigure tzdata
 sudo dpkg -i rclone-*
 sudo apt update
 sudo apt install tmux git ccache cmake build-essential openjdk-17-jdk-headless libx11-xcb-dev python3-dev python3-pip cron opencl-headers ocl-icd-opencl-dev strace
 sudo apt upgrade
 pip3 install numpy
**秘密鍵/公開鍵 [#gd86bafb]
-SSH認証用に対称鍵を生成する
 $ ssh-keygen -t ecdsa
 $ ssh-keygen -f hoge
 $ cat hoge.pub >> .ssh/authorized_keys
-.ssh/id_ecdsa.pub をGithubに、hoge の中身をJenkinsに登録する
-githubで確認
 $ ssh -T git@github.com
**OpenCL対応 [#u4e9291e]
-OpenCL対応
--発売と同時に焼きこまれたイメージには、OpenCL対応のドライバが入ってない
--で、[[公式っぽいアカウント>https://github.com/rockchip-linux]]から出てる[[身元不明のドライバ>https://github.com/rockchip-linux/libmali]]を入れてみる(自己責任でね!良い子は真似しちゃダメだよ!)
 $ git clone git@github.com:rockchip-linux/libmali.git
 $ cd libmali
 $ cmake .
 $ make
 $ sudo make instal 
--全部インストールするのは怖かったので、libOpenCL.soだけ差し替えてみた(自己責任でね!良い子は真似しちゃダメだよ!)
 $ git clone git@github.com:rockchip-linux/libmali.git
 $ sudo rm /usr/lib/aarch64-linux-gnu/libOpenCL.so
 $ sudo cp -p libmali/lib/aarch64-linux-gnu/libmali-midgard-t86x-r13p0-wayland.so /usr/lib/aarch64-linux-gnu/
 $ cd /usr/lib/aarch64-linux-gnu/
 $ sudo ln -s libmali-midgard-t86x-r13p0.so libOpenCL.so
--soだけ差し替えればOpenCLは動く
--ただし、手元でビルドするためには、openclのヘッダやpcファイルが事実上必須
 $ sudo apt install opencl-headers ocl-icd-opencl-dev
**Firefly の libmali を使っても、ERROR: The DDK is not compatible とかエラーメッセージが出た場合の対処 [#nb4f4911]
-どうやら、インストールしただけでは/dev/mali0のパーミッションの問題でGPUにアクセスできなくなるらしい。
-もともと使えなかった
--→libmaliを差し替え
--→使える
--→再起動
--→使えなくなる
-という流れだった。
-使えたときは、OpenCVのテストプログラムの表示が
 Parallel framework: pthreads
 CPU features: neon fp16
 [ INFO:0] Initialize OpenCL runtime...
 OpenCL Platforms: 
     ARM Platform
         iGPU: Mali-T860 (OpenCL 1.2 v1.r13p0-00rel0-git(a4271c9).04dadb82d3612c978f88c00109101694)
 Current OpenCL device: 
     Type = iGPU
     Name = Mali-T860
     Version = OpenCL 1.2 v1.r13p0-00rel0-git(a4271c9).04dadb82d3612c978f88c00109101694
     Driver version = 1.2
     Address bits = 64
     Compute units = 4
     Max work group size = 256
     Local memory size = 32 KB
     Max memory allocation size = 494 MB 34 KB
     Double support = Yes
     Host unified memory = Yes
     Device extensions:
         cl_khr_global_int32_base_atomics
         cl_khr_global_int32_extended_atomics
         cl_khr_local_int32_base_atomics
         cl_khr_local_int32_extended_atomics
         cl_khr_byte_addressable_store
         cl_khr_3d_image_writes
         cl_khr_fp64
         cl_khr_int64_base_atomics
         cl_khr_int64_extended_atomics
         cl_khr_fp16
         cl_khr_gl_sharing
         cl_khr_icd
         cl_khr_egl_event
         cl_khr_egl_image
         cl_khr_image2d_from_buffer
         cl_arm_core_id
         cl_arm_printf
         cl_arm_thread_limit_hint
         cl_arm_non_uniform_work_group_size
         cl_arm_import_memory
     Has AMD Blas = No
     Has AMD Fft = No
     Preferred vector width char = 16
     Preferred vector width short = 8
     Preferred vector width int = 4
     Preferred vector width long = 2
     Preferred vector width float = 4
     Preferred vector width double = 2
だったのに、
 Build type: release
 Parallel framework: pthreads
 CPU features: neon fp16
 ERROR: The DDK is not compatible with any of the Mali GPUs on the system.
 The DDK was built for 0x860 r2p0 status range [0..15], but none of the GPUs matched:
 [ INFO:0] Initialize OpenCL runtime...
 OpenCL is disabled
-という具合に変わってしまった。
-デレがツンになってしまった。
-で、調べると、どうも/dev/mali0にアクセスしたのちに諦めているっぽい。
 $ strace ./bin/opencv_test_imgproc --gtest_filter=slkfjdslfkjdslfsd > stracelog.txt 2>&1
 $ tail -20 stracelog.txt
 openat(AT_FDCWD, "./.mali_config", O_RDONLY) = -1 ENOENT (No such file or directory)
 brk(0x1031000)                          = 0x1031000
 openat(AT_FDCWD, "/dev/mali0", O_RDWR|O_NONBLOCK|O_CLOEXEC) = -1 EACCES (Permission denied)
 write(2, "ERROR: The DDK is not compatible"..., 159ERROR: The DDK is not compatible with any of the Mali GPUs on the system.
 The DDK was built for 0x860 r2p0 status range [0..15], but none of the GPUs matched:
 ) = 159
 openat(AT_FDCWD, "/dev/mali0", O_RDWR|O_NONBLOCK|O_CLOEXEC) = -1 EACCES (Permission denied)
 munmap(0x7fa2385000, 200704)            = 0
 write(1, "[ INFO:0] Initialize OpenCL runt"..., 58[ INFO:0] Initialize OpenCL runtime...
 OpenCL is disabled
 ) = 58
 ioctl(1, TCGETS, 0x7fca4e7648)          = -1 ENOTTY (Inappropriate ioctl for device)
 write(1, "Note: Google Test filter = slkfj"..., 93Note: Google Test filter = slkfjdslfkjdslfsd
 [==========] Running 0 tests from 0 test cases.
 ) = 93
 write(1, "[==========] 0 tests from 0 test"..., 79[==========] 0 tests from 0 test cases ran. (2 ms total)
 [  PASSED  ] 0 tests.
 ) = 79
 exit_group(0)                           = ?
 +++ exited with 0 +++

-で、調べたら、[[インストール用のスクリプト>https://github.com/Apokalypzx/gru-libgl]]を公開している人がいた&note{gru-libgl:[[Apokalypzx/gru-libgl: PKGBUILD for libgl userspace binaries for the rockchip RK3399 SoC containing the Mali Midgard T860 gpu.>https://github.com/Apokalypzx/gru-libgl]], 2018-02-23最終コミット, 2018-04-17閲覧};
-要は /etc/udev/rules.d/99-mali.rules を作り、その中に
 KERNEL=="mali0",SUBSYSTEM=="misc",MODE="0777"
-と書いて再起動すれば良いらしい
 $ sudo vim /etc/udev/rules.d/99-mali.rules
 $ sudo reboot
-他のライブラリの配置も追々追従しよう



[[Arm]]

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