詳解・電子辞書で Linux がブートするまで / boot-linux-on-sharp-brain-explained

Brain Hackers Meetup #1 一般発表

Transcript

1. Linux
   Brain Hackers Meetup #
   1
   @puhitaku
   

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2. Takumi Sueda @puhitaku
   
   
   
   
   2020 9 SHARP Brain
   

   Linux 10
   

   Brain Hackers
   
   
   
   
   
   
   
   
   
   
   

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3. View Slide

4. SHARP Windows CE
   
   

   CE exe (PE)
   
   
   
   
   2011
   
   
   TOSHIBA TMPA
   9
   10
   CRAXBG (armv
   4
   l) +
   64
   MiB DRAM
   
   
   Windows CE
   
   
   2012 2020
   
   
   NXP i.MX
   2
   8
   (armv
   5
   tej) +
   12
   8
   MiB DRAM
   
   
   Windows CE
   
   
   2021
   
   
   NXP i.MX
   7
   ULP (armv
   7
   -a, armv
   7
   e-m) +
   128
   MiB DRAM
   
   
   μITRON RTOS
   : SHARP Brain
   4
   https://jp.sharp/edictionary/products/pwsh
   1
   _overviiew.html
   

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5. puhitaku PW-SH
   1
   Linux
   
   
   Brain Hackers + i.MX
   28
   
   
   Debian Brainux
   Raspberry Pi
   Brain Linux
   
   
   PW-x
   1
   (i.MX
   7
   ULP)
   

   
   
   
   @pepepper
   
   
   11/20 Kernel/VM online part
   4
   : Brain Linux
   5
   https://jp.sharp/edictionary/products/pwsh
   1
   _overviiew.html
   

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6. View Slide

7. Windows Linux 7
   https://jp.sharp/edictionary/products/pwsh
   1
   _overviiew.html
   ?
   Linux
   

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8. Windows Linux 8
   https://jp.sharp/edictionary/products/pwsh
   1
   _overviiew.html
   
   
   ?
   Windows CE
   

   

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9. 1
   . Windows
   1
   . Windows
   9
   

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10. 1
    . Windows
    ARM SoC
    10
    

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11. 1
    . Windows
    A. Boot ROM
    
    
    11
    

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12. 1
    . Windows
    A. Boot ROM
    

    (i.MX
    28
    : On-chip ROM)
    12
    

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13. 1
    . Windows
    ARM
    DRAM ;
    13
    eMMC
    DRAM
    I
    2
    C
    SPI
    ARM
    9
    2 6
    EJ-S
    

    Core
    

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14. 1
    . Windows
    On-chip ROM On-chip RAM
    
    
    On-chip ROM On-chip RAM
    14
    On-chip ROM
    On-chip RAM
    

    (SRAM)
    ARM
    9
    2 6
    EJ-S
    

    Core
    

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15. ARM
    9
    2 6
    EJ-S
    

    Core
    1
    . Windows
    On-chip ROM
    
    
    15
    On-chip ROM
    On-chip RAM
    

    (SRAM)
    🤔
    ARM
    USB slave (recovery)
    I
    2
    C
    SPI
    SSP (eMMC / SD)
    GPMI (NAND)
    JTAG
    

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16. ARM
    9
    2 6
    EJ-S
    

    Core
    1
    . Windows
    Brain One-Time-Programmable ROM eMMC
    

    I
    2
    C EEPROM eMMC
    16
    On-chip ROM
    On-chip RAM
    

    (SRAM)
    😊
    ARM
    USB slave (recovery)
    SSP (eMMC / SD)
    SPI
    I
    2
    C
    GPMI (NAND)
    JTAG
    eMMC
    

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17. 1
    . Windows
    eMMC Program Image
    
    
    DRAM (EBOOT)
    17
    😊
    ARM
    SSP (eMMC / SD)
    Program Image
    MBR
    Program Image
    Boot ROM
    

    : Windows
    DRAM init.
    EBOOT
    NK image
    

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18. 1
    . Windows
    EBOOT NK image Windows
    

    DRAM
    18
    😊
    ARM
    SSP (eMMC / SD)
    MBR
    Program Image
    DRAM init.
    EBOOT
    NK image
    DRAM
    

    EBOOT
    On-chip ROM On-chip RAM
    DRAM
    NK image
    EBOOT
    

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19. 1
    . Windows
    Windows CE
    19
    https://jp.sharp/edictionary/products/pwsh
    1
    _overviiew.html
    

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20. 1
    . Windows 20
    Boot ROM
    Program
    

    Image
    EBOOT
    Windows
    

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21. 2
    . Windows
    2
    . Windows
    21
    

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22. 2
    . Windows 22
    https://jp.sharp/edictionary/products/pwsh
    1
    _overviiew.html
    ?
    Linux
    

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23. 2
    . Windows
    SHARP Windows CE
    
    

    CE exe (PE)
    
    
    
    
    2011
    
    
    TOSHIBA TMPA
    9
    10
    CRAXBG (armv
    4
    l) +
    64
    MiB DRAM
    
    
    Windows CE
    
    
    2012 2020
    
    
    NXP i.MX
    2
    8
    (armv
    5
    tej) +
    12
    8
    MiB DRAM
    
    
    Windows CE
    
    
    2021
    
    
    NXP i.MX
    7
    ULP (armv
    7
    -a, armv
    7
    e-m) +
    128
    MiB DRAM
    
    
    μITRON RTOS
    : SHARP Brain
    23
    https://jp.sharp/edictionary/products/pwsh
    1
    _overviiew.html
    

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24. 2
    . Windows
    " " BrainLILO
    

    24
    Windows
    eMMC
    FAT
    32
    " "
    BrainLILO
    u-boot.bin
    DRAM
    Windows
    

    Kernel
    Brain
    

    LILO
    BrainLILO
    ???
    

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25. 2
    . Windows
    U-Boot (u-boot.bin) DRAM
    25
    Windows
    eMMC
    u-boot.bin
    

    DRAM
    Windows
    

    Kernel
    Brain
    

    LILO
    u-boot.bin
    FAT
    32
    " "
    BrainLILO
    u-boot.bin
    ???
    

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26. 2
    . Windows
    MMU (Memory Management Unit) etc.
    26
    Windows
    eMMC
    DRAM
    u-boot.bin
    🔥
    🔥
    🔥 🔥
    FAT
    32
    " "
    BrainLILO
    u-boot.bin
    ???
    

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27. 2
    . Windows
    U-Boot
    27
    Windows
    eMMC
    ͞Α͏ͳΒʜ
    DRAM
    u-boot.bin
    🔥
    🔥
    🔥 🔥
    FAT
    32
    " "
    BrainLILO
    u-boot.bin
    ???
    

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28. 2
    . Windows
    U-Boot
    

    Linux
    28
    U-Boot
    eMMC
    DRAM
    u-boot.bin
    FAT
    32
    " "
    BrainLILO
    u-boot.bin
    Linux Image
    Linux
    Image
    Linux
    

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29. 2
    . Windows
    Linux
    29
    https://jp.sharp/edictionary/products/pwsh
    1
    _overviiew.html
    

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30. 2
    . Windows 30
    BrainLILO U-Boot
    Windows
    

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31. 3
    . Linux
    3
    . Linux
    31
    

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32. 3
    . Linux
    Linux 1
    32
    Program
    

    Image
    Brain
    

    LILO
    U-Boot
    EBOOT
    U-Boot
    Boot
    
    
    ROM
    U-Boot
    Program
    

    Image
    

    

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33. 3
    . Linux
    3
    .
    1
    . EBOOT U-Boot
    33
    Program
    

    Image
    Brain
    

    LILO
    U-Boot
    EBOOT
    U-Boot
    Boot
    
    
    ROM
    U-Boot
    Program
    

    Image
    

    

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34. 3
    . Linux
    eMMC NK image
    

    SD NK image
    34
    PW-SH
    1
    EBOOT
    

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35. 3
    . Linux
    NK image U-Boot
    

    EBOOT U-Boot
    35
    SD
    FAT
    32
    EDSA
    1
    EXE.BIN
    

    

    u-boot.bin
    NK image
    

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36. 3
    .
    2
    . Boot ROM Program Image U-Boot
    3
    .
    2
    . Boot ROM Program Image U-Boot
    36
    Program
    

    Image
    Brain
    

    LILO
    U-Boot
    Boot
    
    
    ROM
    U-Boot
    Program
    

    Image
    

    U-Boot
    EBOOT
    

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37. 3
    .
    2
    . Boot ROM Program Image U-Boot
    eMMC EBOOT U-Boot Program Image
    

    Linux
    37
    eMMC
    MBR
    Program Image
    U-Boot SPL
    U-Boot
    Linux rootfs (ext
    4
    )
    

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38. 3
    .
    2
    . Boot ROM Program Image U-Boot
    EBOOT BrainLILO Program Image
    38
    Program
    

    Image
    Brain
    

    LILO
    U-Boot
    Boot
    
    
    ROM
    U-Boot
    Program
    

    Image
    

    U-Boot
    EBOOT
    ❌
    ⭕
    ⭕
    

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39. 4
    . Program Image
    4
    . Program Image
    39
    

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40. 4
    . Program Image
    eMMC Linux
    
    
    SD I/O
    
    
    SD
    
    
    SDIO Wi-Fi
    
    
    Linux
    
    
    GPIO
    
    
    Program Image
    40
    

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41. 5.
    5.
    41
    

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42. 5.
    SHARP Brain Linux
    
    
    Windows BrainLILO U-Boot
    
    
    EBOOT (Windows ) U-Boot
    
    
    Boot ROM U-Boot
    
    
    Boot ROM
    
    
    
    42
    

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43. Brain Hackers
    

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