296 lines
12 KiB
Nix
296 lines
12 KiB
Nix
# BUILD THE CONFIG WITH:
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# - `nix build '.#hostConfigs.moby.boot.kernelPackages.kernel.configfile'`
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# other people using pinephone kernels:
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# - postmarketOS (pmaports)
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# - uses megi's kernel; their kernel config is embedded in their pmaports repo
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{ lib
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, buildLinux
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, fetchpatch
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, fetchFromGitea
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, pkgs
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# modem_power is incompatible with eg25-manager: <https://gitlab.com/mobian1/eg25-manager/-/issues/38>
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, withModemPower ? true
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# something inside nixpkgs calls `override` on the kernel and passes in extra arguments
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, ...
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}@args:
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with lib;
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let
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# HOW TO UPDATE:
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# - see: <https://xnux.eu/log/094.html>
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# - `git fetch torvalds`
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# - `curl -o .bundle https://xff.cz/kernels/git/orange-pi-active.bundle`
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# - `git fetch .bundle '+refs/heads/*:refs/remotes/megi/*'`
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# - OR: `git bundle unbundle .bundle`
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# - there should be some new tag, like `refs/tags/orange-pi-6.4-20230907-1427`
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# checkout the revision associated with the tag, then:
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# - manually retag it, because `git bundle` doesn't actually import the tag
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# - `git checkout <commit> ; git tag <tagname>`
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# - `git push origin <tag>`
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# - grab VERSION/PATCHLEVEL/SUBLEVEL/EXTRAVERSION from Makefile.
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# - `rg '^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION) =' Makefile`
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# for extra safety, pin to the same version as postmarketOS, in pmaports:
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# - device/main/linux-postmarketos-allwinner/APKBUILD
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# if `withModemPower = false` then update the commit for the "drop-modem-power" patch from pmOS, below
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#
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# build via: `nix build '.#hostConfigs.moby.boot.kernelPackages.kernel'`
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#
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# - megi publishes release notes as the most recent commit on any release tag, so just `git show` or `git log`
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# - orange-pi is listed as the "main integration branch".
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# - this suggests it's NOT a stable branch, only `orange-pi-X.YY-YYYYMMDD-NNNN` tags are "formal" releases
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# - specific branches like `pp` (pinephone) are dev branches, and probably less stable.
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rev = "orange-pi-6.8-20240405-1842";
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base = "6.8.4";
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hash = "sha256-9PG/P8NxD4HyG+tE59AjHClAmH9E8yuysN5YUyf1qAk=";
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# set to empty if not a release candidate, else `-rc<N>`
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rc = "";
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# pinephone uses the linux dtb at arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
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# - this includes sun50i-a64.dtsi
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# - and sun50i-a64-cpu-opp.dtsi
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# - no need to touch the allwinner-h6 stuff: that's the SBC pine product
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# - i think it's safe to ignore sun9i stuff, but i don't know what it is
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kernelConfig = with lib.kernel; {
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# NB: nix adds the CONFIG_ prefix to each of these.
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# if you add the prefix yourself nix will IGNORE YOUR CONFIG.
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# optimize for faster builds.
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# see <repo:kernel.org/linux:Documentation/admin-guide/quickly-build-trimmed-linux.rst>
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DEBUG_KERNEL = lib.mkForce no; # option group which seems to just gate the other DEBUG_ opts?
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DEBUG_INFO = lib.mkForce no; # for gdb debugging
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DEBUG_INFO_BTF = lib.mkForce no; # BPF debug symbols. rec by <https://nixos.wiki/wiki/Linux_kernel#Too_high_ram_usage>
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# SCHED_DEBUG = lib.mkForce no; # determines /sys/kernel/debug/sched
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# SUNRPC_DEBUG = lib.mkForce no; # i use NFS though
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MODEM_POWER = lib.mkIf (!withModemPower) no;
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# normally a module; try inline? for vibration/haptics
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INPUT_GPIO_VIBRA = yes;
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INPUT_PWM_VIBRA = yes;
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PWM_SUN4I = yes;
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# DRM_SUN4I = yes; # DRM_SUN* defaults to module.
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# DRM_SUN8I_MIXER = yes;
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# DRM_SUN6I_DSI = yes;
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# taken from mobile-nixos config?? or upstream megous config??
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RTL8723CS = module;
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BT_HCIUART_3WIRE = yes;
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BT_HCIUART_RTL = yes;
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RTL8XXXU_UNTESTED = yes;
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BT_BNEP_MC_FILTER = yes;
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BT_BNEP_PROTO_FILTER = yes;
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BT_HS = yes;
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BT_LE = yes;
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#
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### BUILD FIXES, NOT SPECIFIC TO MY PREFERENCES
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#
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# disabling the sun5i_eink driver avoids this compilation error:
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# CC [M] drivers/video/fbdev/sun5i-eink-neon.o
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# aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mfloat-abi=softfp'
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# aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mfpu=neon'
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# make[3]: *** [../scripts/Makefile.build:289: drivers/video/fbdev/sun5i-eink-neon.o] Error 1
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FB_SUN5I_EINK = no;
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# used by the pinephone pro, but fails to compile with:
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# ../drivers/media/i2c/ov8858.c:1834:27: error: implicit declaration of function 'compat_ptr'
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VIDEO_OV8858 = no;
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BES2600 = no; # fails to compile
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### RUNTIME FIXES AFTER <https://github.com/NixOS/nixpkgs/pull/298332>
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# pmOS kernel config is in pmaports repo:
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# - CONFIG_FB_SIMPLE=y
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# - CONFIG_DRM_SIMPLEDRM is unset
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# - CONFIG_SYSFB_SIMPLEFB is not referenced
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# these config values are speculative: could probably be made smaller
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FB_SIMPLE = lib.mkForce yes;
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DRM_SIMPLEDRM = lib.mkForce no; #< conflicts (supposedly) with FB_SIMPLE
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SYSFB_SIMPLEFB = lib.mkForce no;
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# downgrade these from "yes" to "module", to match previous config.
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DRM = lib.mkForce module;
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RC_CORE = lib.mkForce module;
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DRM_KMS_HELPER = lib.mkForce module;
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# AGP = lib.mkForce no; # "Accelerated Graphics Port" (idk)
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#
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### RELEVANT CONFIGS INHERITED FROM NIXOS DEFAULTS (OR ABOVE ADDITIONS):
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#
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# CONFIG_BT=m
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# CONFIG_BT_BREDR=y
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# CONFIG_BT_RFCOMM=m
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# CONFIG_BT_RFCOMM_TTY=y
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# CONFIG_BT_BNEP=m
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# CONFIG_BT_HIDP=m
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# CONFIG_BT_RTL=m
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# CONFIG_BT_HCIBTUSB=m
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# CONFIG_BT_HCIBTUSB_BCM=y
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# CONFIG_BT_HCIBTUSB_RTL=y
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# CONFIG_BT_HCIUART=m
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# CONFIG_BT_HCIUART_SERDEV=y
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# CONFIG_BT_HCIUART_H4=y
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# CONFIG_BT_HCIUART_LL=y
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# CONFIG_DRM_LIMA=m
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# CONFIG_DRM_BRIDGE=y
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# CONFIG_DRM_PANEL_BRIDGE=y
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# CONFIG_DRM_PANFROST=m
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# CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
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# CONFIG_DRM_PANEL_SIMPLE=m
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# CONFIG_DRM_PANEL_SITRONIX_ST7703=m
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# CONFIG_DRM_SUN4I=m
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# CONFIG_DRM_SUN6I_DSI=m
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# CONFIG_DRM_SUN8I_DW_HDMI=m
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# CONFIG_DRM_SUN8I_MIXER=m
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# CONFIG_DRM_SUN8I_TCON_TOP=m
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# CONFIG_FB_CORE=y
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# CONFIG_FB_DEVICE=y
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# CONFIG_FB_NOTIFY=y
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# CONFIG_FB_MODE_HELPERS=y
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# CONFIG_RTL_CARDS=m
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# CONFIG_RTLWIFI=m
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# CONFIG_RTLWIFI_PCI=m
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# CONFIG_RTLWIFI_USB=m
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# CONFIG_RTLWIFI_DEBUG=y
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# CONFIG_RTL8723_COMMON=m
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# CONFIG_RTLBTCOEXIST=m
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# CONFIG_RTL8XXXU=m
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# CONFIG_RTLLIB=m
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# consider adding (from mobile-nixos):
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# maybe: CONFIG_BT_HCIUART_3WIRE=y
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# maybe: CONFIG_BT_HCIUART_RTL=y
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# maybe: CONFIG_RTL8XXXU_UNTESTED=y
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# consider adding (from manjaro):
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# CONFIG_BT_6LOWPAN=m (not listed as option in nixos kernel)
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# these are referenced in the rtl8723 source, but not known to config (and not in mobile-nixos config
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# maybe: CONFIG_RTL_ODM_WLAN_DRIVER
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# maybe: CONFIG_RTL_TRIBAND_SUPPORT
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# maybe: CONFIG_SDIO_HCI
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# maybe: CONFIG_USB_HCI
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};
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# `pkgs.kernelPatches` is a set of common patches
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# while `kernelPatches` callarg is a list.
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# weird idiom, means we have to access pkgs.kernelPatches to access the actual patch directory:
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extraKernelPatches = [
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pkgs.kernelPatches.bridge_stp_helper
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pkgs.kernelPatches.request_key_helper
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# (patchDefconfig kernelConfig)
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# wake on wireless lan (WOWLAN) patches:
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# see: <https://gist.github.com/Peetz0r/bf8fd93a60962b4afcf2daeb4305da40>
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# see: <https://xnux.eu/log/031.html>
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# see: <https://irclog.whitequark.org/linux-sunxi/2021-02-19>
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# most of the relevant bits here (e.g. CONFIG_WOWLAN=y) have been merged
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# {
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# # the pinephone device tree to `keep-power-in-suspend` for the WiFi peripherals
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# # unclear if this is truly needed: a *different* piece of the device tree was set for keep-power-in-suspend
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# # when megi merged Peetz0r's patch.
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# # there appears to be support for WOWLAN even with this patch dropped.
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# name = "pinephone-dt-keep-power-in-suspend";
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# patch = fetchpatch {
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# url = "https://git.uninsane.org/colin/linux/commit/afd6514fd3098047000b3f1f198c2256478dce46.patch";
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# hash = "sha256-8OtGXpCPJbk3c3Z4DcurS0F+Ogqx+xahEv+256+4dcY=";
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# };
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# }
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# {
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# # experimental: set CONFIG_LPS_MODE = 0
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# # uncertain what this does, LPS = "Leisure Power Savings"
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# name = "disable-rtl8723cs-lps";
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# patch = fetchpatch {
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# url = "https://git.uninsane.org/colin/linux/commit/8bee908739b3b3aa505b22e558397d2d59060951.patch";
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# hash = "sha256-DnLDseL1Ar5gE31CQUTrGNxxNu88jGCzj8ko99Z8vUA=";
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# };
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# }
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# {
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# # experimental: set CONFIG_ARP_KEEP_ALIVE and CONFIG_GTK_OL if CONFIG_WOWLAN=y
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# # this patch just uncomments some commented-out #defines.
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# # they were commented out from the first time megi imported this driver, never touched.
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# # this may be problematic, occasionally requiring a driver re-probe. see other notes on wowlan/8723cs.
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# # if continued errors, try removing the CONFIG_GTK_OL and keeping just CONFIG_ARP_KEEP_ALIVE.
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# # seems to infrequently disrupt waking on ARP packets, as well.
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# name = "enable-wowlan-offloads";
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# patch = fetchpatch {
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# url = "https://git.uninsane.org/colin/linux/commit/c4d2d12e31ae70bb43c6190eccc49e42ad645090.patch";
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# hash = "sha256-B1rxeVu6y5hP/iMLSbl3ExwrEIXL7WShWsMFh6ko6yk=";
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# };
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# }
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{
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name = "pinephone: wowlan: disable unicast";
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patch = fetchpatch {
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url = "https://git.uninsane.org/colin/linux/commit/3b3328cfb35b6cea3480c6358faf4d4175146372.patch";
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hash = "sha256-aBa63UHaU+KSWNzeXEamcMhJr2bRkJGZPTM7nBNu9wk=";
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};
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}
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# {
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# name = "pinephone: wowlan: disable unicast/deauth/magic packet/arp";
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# patch = fetchpatch {
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# url = "https://git.uninsane.org/colin/linux/commit/624315afd2ebd44fc6d0056c206b502e50d92775.patch";
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# hash = "sha256-KlgIJigK7G89obT7qWGdHqQ+eavYrCkuwo2d0wdUrpE=";
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# };
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# }
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{
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# enables /proc/net/rtl8723cs/wlan0/gpio_info and gpio_set_direction, gpio_set_output_value.
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# `cat gpio_info` -> `get_gpio 0:0`
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# writing to gpio_set_output_value does change the value of gpio_info, but not of
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# /sys/kernel/debug/gpio
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name = "pinephone: rtl8723cs: enable CONFIG_GPIO_API";
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patch = fetchpatch {
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url = "https://git.uninsane.org/colin/linux/commit/51dea574a4559bd30fda2b0f852e42cad6cb6757.patch";
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hash = "sha256-pAmif5vMdZzgmyzkLmvdOltoXdeXeBeOhvGbpHWzIkc=";
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};
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}
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# {
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# # this changes the IRQ definition in the devicetree, and at runtime the decompiled
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# # fdt shows this change, but /proc/interrupts still shows as an edge interrupt.
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# # no IRQs or GPIOs were changed at all, actually.
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# # likely something else is configuring the IRQ at runtime.
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# name = "pinephone: rtl8723cs: IRQ on LEVEL_LOW instead of EDGE_FALLING";
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# patch = fetchpatch {
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# url = "https://git.uninsane.org/colin/linux/commit/223046eac02c5b1ca6203f68df495d35ce191280.patch";
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# hash = "sha256-Quhvz7hiM3TbpZ2pKuHVXrO8OLn3r7WNYYIjQc1CWcQ=";
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# };
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# }
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] ++ lib.optionals (!withModemPower) [
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{
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# Drop modem-power from DT to allow eg25-manager to have full control.
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# source: <https://github.com/NixOS/mobile-nixos/pull/573>
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name = "remove-modem-power-from-devicetree";
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patch = fetchpatch {
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url = "https://gitlab.com/postmarketOS/pmaports/-/raw/05a3c22d81591dd6b4b41a0ffebe1159be49b09b/device/main/linux-postmarketos-allwinner/0006-dts-pinephone-drop-modem-power-node.patch";
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hash = "sha256-dyxlzp73hQ2AsaQbLIl0B7bR7Z1PHIMUS+CFN0kkMTs=";
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};
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}
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];
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# create a kernelPatch which overrides nixos' defconfig with extra options
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# patchDefconfig = config: {
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# # defconfig options. this method comes from here:
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# # - https://discourse.nixos.org/t/the-correct-way-to-override-the-latest-kernel-config/533/9
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# name = "linux-megous-defconfig";
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# patch = null;
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# extraStructuredConfig = config;
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# };
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in buildLinux (args // {
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version = base + rc;
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# modDirVersion needs to be x.y.z, where `z` could be `Z-rcN`
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# nix kernel build will sanity check us if we get the modDirVersion wrong
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modDirVersion = base + rc;
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# branchVersion needs to be x.y
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extraMeta.branch = versions.majorMinor base;
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src = fetchFromGitea {
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domain = "git.uninsane.org";
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owner = "colin";
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repo = "linux";
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inherit rev hash;
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};
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kernelPatches = extraKernelPatches ++ (
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# this patch only applies to nixpkgs kernel (and is probably not necessary on megi's).
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# TODO: remove the patch and this logic here once fixed in nixpkgs: <https://github.com/NixOS/nixpkgs/issues/255803>
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lib.filter
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(p: p.name != "backport-nfs4-selinux-fix")
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(args.kernelPatches or [])
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);
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structuredExtraConfig = (args.structuredExtraConfig or {}) // kernelConfig;
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})
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