Figuring out hardware, networking stuff, timelines. All planning.
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# Hardware
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## Minimum viable product
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* CPU: any x86_64
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* Storage: NVMe
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* Graphics: VGA
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* PnP: PS/2 keyboard
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* My laptop keyboard is represented as a PS/2 keyboard, so this is actual hardware!
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## Very important
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* PnP: Clock
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* Sound: Intel HD Audio
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* Network:
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* QEMU: VirtIO network
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* Physical:
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* Qualcomm Atheros QCA6174 802.11ac
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* USB wireless adapter
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* I have a few of these. This would require USB support first obviously.
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* RTL8153 Ethernet via Thunderbolt 3 dock
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* Probably not a viable option because it'd require supporting my dock.
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## Important
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* PnP: PS/2 mouse
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* USB:
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* Controllers: xHCI
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* Devices: HID, audio
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* Graphics: Intel HD Graphics 630
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* Not supported by QEMU.
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## Less important
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* USB devices: storage, bluetooth, hub
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* Bluetooth devices: keyboard, mouse
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* Thunderbolt 3: controller, bridge, NHI (what is this?)
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* Not supported by QEMU.
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## Unimportant
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* CPU security mitigations (as listed by lscpu)
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* Graphics: AMD Polaris 22 XL [Radeon RX Vega M GL]
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* Not supported by QEMU.
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* Not very important thanks to Intel HD graphics. I don't expect to be doing a lot of gaming!
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* Graphics: VirtIO GPU
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* Necessary to get better than VGA graphics on QEMU (I think?)
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* Possibly easier than supporting real graphics cards?
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* If this is true, maybe it'd be worth implementing first?
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* Power management: ACPI
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* USB devices:
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* billboard
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* To my understanding this is just an error reporting mechanism.
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* MIDI over USB
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* Not very useful without a good synthesizer (might be a fun toy anyway)
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* Maybe not supported by QEMU?
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* wacom
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* Not very useful without a good drawing program
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* webcam
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* It's something I'd use in theory, at least.
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## Very unimportant
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Hardware I don't even have, but is very common and makes it on the wishlist at least.
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* Storage: ACPI, SCSI & UAS, eSATA, ATAPI
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* ACPI especially. Most drives aren't SSD drives!
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* USB controllers: OHCI, UHCI, EHCI
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* Probably not too difficult. I wouldn't be surprised if they end up getting implemented while working my way up to xHCI anyway.
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* A computer with literally no USB 2.0 ports like mine is still pretty niche, probably!
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* Network: USB ethernet & wireless adapters
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* Good because any computer can use them.
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## Don't care
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Hardware I *do* have, but don't care about supporting for the foreseeable future.
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* SD card reader
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* Fingerprint reader
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* Intel ME
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## Needs research
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* USB device family: billboard
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* lsusb reports at least one but I don't know what it does
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* USB:
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* Microchip Technology, Inc. (formerly SMSC) USB5537B
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* (totally empty): Pretty sure this is my USB drive. Don't know why it's shwoing up empty.
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* Thunderbolt 3:
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* I'm guessing I need to support all of these for my thunderbolt 3 dock to work,
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but I don't actually know what does what, specifically.
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* 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!!)
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* PCI bridge: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] (rev 02)
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* System peripheral: Intel Corporation JHL6540 Thunderbolt 3 NHI (C step) [Alpine Ridge 4C 2016] (rev 02)
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* PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015]
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* USB controller: Intel Corporation JHL6540 Thunderbolt 3 USB Controller (C step) [Alpine Ridge 4C 2016] (rev 02)
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* Does this need a different, non-xHCI driver?
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* Apparently power-related:
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* I'm not sure what drivers for these would actually do.
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Am I supposed to read out data from them, or control them in some way, or..?
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* I think I can probably get away with ignoring these for now.
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* Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem
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* Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem
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* Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller
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* Apparently input-related:
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* Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO I2C Controller
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* I think this has to do with the touch screen and touch pad (I have 2 controllers shown)
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* Might actually be worth implementing if it means freeing up a USB port until I get thunderbolt 3 working
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* MIght actually be worth implementing if it means I can defer implementing USB entirely
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* Don't know:
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* SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus
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* A bus controller obviously, but I don't know what uses this bus that I need to support.
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* Non-VGA unclassified device: Intel Corporation 100 Series/C230 Series Chipset Family Integrated Sensor Hub
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* kernel.org says this is some kind of co-processor but I don't know
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if it's just optional to save power or if it's necessary to support some hardware,
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and for that matter, what hardware it's actually applicable to
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# Network
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Protocols I need to support for a working network stack.
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## Minimum Viable Product
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* Link layer: Ethernet
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* Internet layer: IPv6, ICMPv6
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* Transport layer: TCP, UDP
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* Application layer: DNS, HTTP/1.0
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## Very important
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* Link layer: 802.11ac, 802.11n, WPA2, WPA3
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* Internet layer: IPv4, ICMP, IGMP
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* Application layer: DHCP
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## Important
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* Application layer:
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* TLS:
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* Versions: 1.3
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* Ciphers: AES GCM (128, 256), ChaCha20-Poly1305
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* MACs: AEAD, HMAC-SHA256/384
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* Certificates: RSA, EC
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* Curves: secp512r1, secp384r1, secp256r1, x25519, ed25519, x448, ed448
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* HTTPS
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* IRCS
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* DNS over HTTPS
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## Less important
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* Application layer:
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* HTTP/2, ALPN
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* TLS 1.2
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* IMAP
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* SMTP
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* SSH
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## Unimportant
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* Transport layer: QUIC
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* Application layer:
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* HTTP/3
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* TLS MACs: GOST 28147-89 IMIT, GOST R 34.11-94
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* Other: HSTS + preloading, OCSP stapling, certificate transparency, session resumption
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@ -0,0 +1,20 @@
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# Timeline
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A tentative short-term timeline for what to do next.
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## Leaving UEFI
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* Transition from UEFI stdout to UEFI GOP
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* Transition from UEFI GOP to real graphics drivers:
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* VirtIO GPU
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* Intel HD Graphics 630
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* Transition from UEFI stdin to a PS/2 keyboard
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* Transition from UEFI allocation to a custom allocator
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* RTC support continues even after exiting UEFI boot services.
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## Multiprocessing
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* Support for basic relocatable executables
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* Single-processor scheduler
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* Multi-processor scheduling
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## Accessing storage
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* NVMe driver
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* FAT32 support
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