Explain how to make own container to run program on MTK LinkIt Smart 7688 and other hardware architectures

1. MT7688 Emulator
MakerBoard

2. 錢逢祥
Fred Chien

3. Open Source Developer
開放原始碼自幹者

4. 黑客松台灣 共同創辦人
Hackathon Taiwan Co-founder

6. 多年前
years ago

7. 在那又大又土又慢又貴的年代

8. 雖然我 慣 C
C Language Enthusiast

9. 但我也受不了
每天和這些硬體一起醉

10. 在這追求應用的時代
需要快速打造

11. 我夢想能有個易開發的方法
在嵌入式系統上

12. 自從 JavaScript 抬頭
聽說一個語言 20 年會進入成熟期

13. 希望能用 JavaScript
進行各種物聯網或嵌入式應用開發

14. 很多的人當我瘋子
在當時

15. 有一天成真了，有大廠親自跳下來

16. 我發現我真是瘋子
現在

17. Play in Pain

18. Less Memory
記憶體好少

19. Less Storage
儲存空間好少

20. Keep Connection Alive
必須連著線開發

21. SAVE ME !
Please!

22. Linux Kernel
Userspace
Node.js (JavaScript Engine)
Applications
Libraries

23. Linux Kernel
Userspace
Node.js (JavaScript Engine)
Applications
Libraries
footprint
Memory
Usage

24. 這不是 PC 啊！
也不是 Server！

25. 等等！？

26. 我可以在 PC 上模擬嗎？

27. MakerBoard

28. Git Repository
http://github.com/cfsghost/makerboard

29. Run an Emulation
on your computer

30. QEMU
Virtual Machine

31. Container
technology

33. 其實你也可以自幹
You can make it

34. 什麼是 Container ?
What's that?
LXC? Docker ?

36. Chroot System Call
Unix

38. 觀察 Linux 開機流程
了解 chroot 機制

39. Bootloader
Linux Kernel
Initrd/ramdisk image
bin lib
usrsbin tmp
etc
Root Filesystem

40. Bootloader
Linux Kernel
Initrd/ramdisk image
Root Filesystem on Disk
bin lib
usrsbin tmp
etc
Root Filesystem
var

41. Bootloader
Linux Kernel
Initrd/ramdisk image
Root Filesystem on Disk
bin lib
usrsbin tmp
etc
Root Filesystem
var
Detecting Disk &
Selecting run level

42. Bootloader
Linux Kernel
Initrd/ramdisk image
Root Filesystem on Disk
bin lib
usrsbin tmp
etc
Root Filesystem
var
chroot system call
(note: privot_root)

43. Root Filesystem
Chroot
Linux Kernel
bin lib usr ...
Chroot
...
Chroot
...
Chroot
...
* Run different systems on the same kernel

46. 這一切只是個開始
It's jsut the beginning

47. cgroup

48. 我能自幹 Container 了
然後呢？

49. Userspace
Chroot
Linux Kernel
bin lib usr ...
x86
Execute ELF files

50. Userspace
Chroot
Linux Kernel
bin lib usr ...
x86
Execute non-x86 ELF files

51. non-x86 ELF
怎麼跑？

52. Binary Format Support
apt-get install binfmt-support

53. qemu-user-static
apt-get install qemu-user-static

54. Register ELF on kernel
/proc/sys/binfmt_misc

55. Userspace
Chroot
Linux Kernel
bin lib usr ...
QEMU
Recognize ELF for ARM, MIPS and other architectures
x86
binfmt support

57. MT7688
MIPS & Little-endian

58. qemu-mipsel-static
<rootfs>/usr/bin/qemu-mipsel-static

60. Userspace
Chroot
Linux Kernel
bin lib usr ...
x86 Hardware
Execute Your MIPS Application

61. All Memory and Storage
on computer you can use
With Emulation

62. Sweet!
Thank God!

63. Userspace
Chroot
Linux Kernel
bin lib usr ...
x86 Hardware
Execute Your MIPS Application

64. Userspace
Chroot
Linux Kernel
x86 Hardware
Userspace
Linux Kernel
MT7688 Hardware
Copying your application to MT7688

66. Installation
How to install MakerBoard?

67. Install Dependencis
sudo apt-get install qemu-user-static squashfs-tools

68. Install MakerBoard
npm install makerboard -g

69. Usage
How to use MakerBoard?

70. Create an Emulation
makerboard create my7688

71. Run Emulation
makerboard run my7688

72. Live Demo
:-)