142 lines
5.3 KiB
Nix
142 lines
5.3 KiB
Nix
{ lib
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, buildLinux
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, fetchFromGitHub
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, pkgs
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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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# - `git fetch` from megous' repo (https://github.com/megous/linux.git).
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# - there should be some new tag, like `orange-pi-6.1-blah`. use that.
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# - grab VERSION/PATCHLEVEL/SUBLEVEL/EXTRAVERSION from Makefile.
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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-6.4-20230619-0323";
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hash = "sha256-il32UQM/8Fc7VHft3+M4TLMxk5+h28C9Suu1kRdZj2M=";
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base = "6.4.0";
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# set to empty if not a release candidate, else `-rc<N>`
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rc = "-rc7";
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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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# 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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#
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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_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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];
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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 = fetchFromGitHub {
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owner = "megous";
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repo = "linux";
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inherit rev hash;
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};
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kernelPatches = (args.kernelPatches or []) ++ extraKernelPatches;
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structuredExtraConfig = (args.structuredExtraConfig or {}) // kernelConfig;
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})
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