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bootproof/docs/hardware.md

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Hardware

Minimum viable product

  • CPU: any x86_64
  • Storage: NVMe
  • Graphics: VGA
  • PnP: PS/2 keyboard
    • My laptop keyboard is represented as a PS/2 keyboard, so this is actual hardware!

Very important

  • PnP: Clock
  • Sound: Intel HD Audio
  • Network:
    • QEMU: VirtIO network
    • Physical:
      • Qualcomm Atheros QCA6174 802.11ac
      • USB wireless adapter
        • I have a few of these. This would require USB support first obviously.
      • RTL8153 Ethernet via Thunderbolt 3 dock
        • Probably not a viable option because it'd require supporting my dock.

Important

  • PnP: PS/2 mouse
  • USB:
    • Controllers: xHCI
    • Devices: HID, audio
  • Graphics: Intel HD Graphics 630
    • Not supported by QEMU.

Less important

  • USB devices: storage, bluetooth, hub
  • Bluetooth devices: keyboard, mouse
  • Thunderbolt 3: controller, bridge, NHI (what is this?)
    • Not supported by QEMU.

Unimportant

  • CPU security mitigations (as listed by lscpu)
  • Graphics: AMD Polaris 22 XL [Radeon RX Vega M GL]
    • Not supported by QEMU.
    • Not very important thanks to Intel HD graphics. I don't expect to be doing a lot of gaming!
  • Graphics: VirtIO GPU
    • Necessary to get better than VGA graphics on QEMU (I think?)
    • Possibly easier than supporting real graphics cards?
      • If this is true, maybe it'd be worth implementing first?
  • Power management: ACPI
  • USB devices:
    • billboard
      • To my understanding this is just an error reporting mechanism.
    • MIDI over USB
      • Not very useful without a good synthesizer (might be a fun toy anyway)
      • Maybe not supported by QEMU?
    • wacom
      • Not very useful without a good drawing program
    • webcam
      • It's something I'd use in theory, at least.

Very unimportant

Hardware I don't even have, but is very common and makes it on the wishlist at least.

  • Storage: ACPI, SCSI & UAS, eSATA, ATAPI
    • ACPI especially. Most drives aren't SSD drives!
  • USB controllers: OHCI, UHCI, EHCI
    • Probably not too difficult. I wouldn't be surprised if they end up getting implemented while working my way up to xHCI anyway.
    • A computer with literally no USB 2.0 ports like mine is still pretty niche, probably!
  • Network: USB ethernet & wireless adapters
    • Good because any computer can use them.

Don't care

Hardware I do have, but don't care about supporting for the foreseeable future.

  • SD card reader
  • Fingerprint reader
  • Intel ME

Needs research

  • USB device family: billboard
    • lsusb reports at least one but I don't know what it does
  • USB:
    • Microchip Technology, Inc. (formerly SMSC) USB5537B
    • (totally empty): Pretty sure this is my USB drive. Don't know why it's shwoing up empty.
  • Thunderbolt 3:
    • I'm guessing I need to support all of these for my thunderbolt 3 dock to work, but I don't actually know what does what, specifically.
    • I'm pretty sure I don't need this for the ports to work as USB 3 ports. (And if it does, I'm fucked!!)
    • PCI bridge: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] (rev 02)
    • System peripheral: Intel Corporation JHL6540 Thunderbolt 3 NHI (C step) [Alpine Ridge 4C 2016] (rev 02)
    • PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015]
    • USB controller: Intel Corporation JHL6540 Thunderbolt 3 USB Controller (C step) [Alpine Ridge 4C 2016] (rev 02)
      • Does this need a different, non-xHCI driver?
  • Apparently power-related:
    • I'm not sure what drivers for these would actually do. Am I supposed to read out data from them, or control them in some way, or..?
    • I think I can probably get away with ignoring these for now.
    • Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem
    • Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem
    • Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller
  • Apparently input-related:
    • Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO I2C Controller
      • I think this has to do with the touch screen and touch pad (I have 2 controllers shown)
      • Might actually be worth implementing if it means freeing up a USB port until I get thunderbolt 3 working
      • MIght actually be worth implementing if it means I can defer implementing USB entirely
  • Don't know:
    • SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus
      • A bus controller obviously, but I don't know what uses this bus that I need to support.
    • Non-VGA unclassified device: Intel Corporation 100 Series/C230 Series Chipset Family Integrated Sensor Hub
      • kernel.org says this is some kind of co-processor but I don't know if it's just optional to save power or if it's necessary to support some hardware, and for that matter, what hardware it's actually applicable to