272 lines
9.9 KiB
Nix
272 lines
9.9 KiB
Nix
{ pkgs, ... }:
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let
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dmesg = "${pkgs.util-linux}/bin/dmesg";
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grep = "${pkgs.gnugrep}/bin/grep";
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modprobe = "${pkgs.kmod}/bin/modprobe";
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ensureHWReady = ''
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# common boot failure:
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# blank screen (no backlight even), with the following log:
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# ```syslog
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# sun8i-dw-hdmi 1ee0000.hdmi: Couldn't get the HDMI PHY
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# ...
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# sun4i-drm display-engine: Couldn't bind all pipelines components
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# ...
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# sun8i-dw-hdmi: probe of 1ee0000.hdmi failed with error -17
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# ```
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#
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# in particular, that `probe ... failed` occurs *only* on failed boots
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# (the other messages might sometimes occur even on successful runs?)
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#
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# reloading the sun8i hdmi driver usually gets the screen on, showing boot text.
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# then restarting display-manager.service gets us to the login.
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#
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# NB: the above log is default level. though less specific, there's a `err` level message that also signals this:
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# sun4i-drm display-engine: failed to bind 1ee0000.hdmi (ops sun8i_dw_hdmi_ops [sun8i_drm_hdmi]): -17
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# NB: this is the most common, but not the only, failure mode for `display-manager`.
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# another error seems characterized by these dmesg logs, in which reprobing sun8i_drm_hdmi does not fix:
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# ```syslog
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# sun6i-mipi-dsi 1ca0000.dsi: Couldn't get the MIPI D-PHY
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# sun4i-drm display-engine: Couldn't bind all pipelines components
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# sun6i-mipi-dsi 1ca0000.dsi: Couldn't register our component
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# ```
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if (${dmesg} --kernel --level err --color=never --notime | ${grep} -q 'sun4i-drm display-engine: failed to bind 1ee0000.hdmi')
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then
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echo "reprobing sun8i_drm_hdmi"
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# if a command here fails it errors the whole service, so prefer to log instead
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${modprobe} -r sun8i_drm_hdmi || echo "failed to unload sun8i_drm_hdmi"
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${modprobe} sun8i_drm_hdmi || echo "failed to load sub8i_drm_hdmi"
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fi
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'';
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in
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{
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# kernel compatibility (2024/05/22: 03dab630)
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# - linux-megous: boots to ssh, desktop
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# - camera apps: megapixels (no cameras found), snapshot (no cameras found)
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# - linux-postmarketos: boots to ssh. desktop ONLY if "anx7688" is in the initrd.availableKernelModules.
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# - camera apps: megapixels (both rear and front cameras work), `cam -l` (finds only the rear camera), snapshot (no cameras found)
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# - linux-megous.override { withMegiPinephoneConfig = true; }: NO SSH, NO SIGNS OF LIFE
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# - linux-megous.override { withFullConfig = false; }: boots to ssh, no desktop
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#
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boot.kernelPackages = pkgs.linuxPackagesFor (pkgs.linux-postmarketos.override {
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withModemPower = true;
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});
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# boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux-megous;
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# boot.kernelPackages = pkgs.linuxPackagesFor (pkgs.linux-megous.override {
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# withFullConfig = false;
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# });
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# boot.kernelPackages = pkgs.linuxPackagesFor (pkgs.linux-megous.override {
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# withMegiPinephoneConfig = true; #< N.B.: does not boot as of 2024/05/22!
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# });
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# boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux-manjaro;
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# boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux_latest;
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# nixpkgs.hostPlatform.linux-kernel becomes stdenv.hostPlatform.linux-kernel
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nixpkgs.hostPlatform.linux-kernel = {
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# defaults:
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name = "aarch64-multiplatform";
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# baseConfig: defaults to "defconfig";
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# baseConfig = "pinephone_defconfig"; #< N.B.: ignored by `pkgs.linux-megous`
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DTB = true; #< DTB: compile device tree blobs
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# autoModules (default: true): for config options not manually specified, answer `m` to anything which supports it.
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# - this effectively builds EVERY MODULE SUPPORTED.
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autoModules = true; #< N.B.: ignored by `pkgs.linux-megous`
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# preferBuiltin (default: false; true for rpi): for config options which default to `Y` upstream, build them as `Y` (overriding `autoModules`)
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# preferBuiltin = false;
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# build a compressed kernel image: without this i run out of /boot space in < 10 generations
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# target = "Image"; # <-- default
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target = "Image.gz"; # <-- compress the kernel image
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# target = "zImage"; # <-- confuses other parts of nixos :-(
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};
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# boot.initrd.kernelModules = [
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# "drm" #< force drm to be plugged
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# ];
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boot.initrd.availableKernelModules = [
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# see <repo:postmarketOS/pmaports:device/main/device-pine64-pinephone/modules-initfs>
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# - they include sun6i_mipi_dsi sun4i_drm pwm_sun4i sun8i_mixer anx7688 gpio_vibra pinephone_keyboard
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"anx7688" #< required for display initialization and functional cameras
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# full list of modules active post-boot with the linux-megous kernel + autoModules=true:
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# - `lsmod | sort | cut -d ' ' -f 1`
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# "8723cs"
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# "axp20x_adc" #< NOT FOUND in megous-no-autoModules
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# "axp20x_battery"
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# "axp20x_pek"
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# "axp20x_usb_power"
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# "backlight"
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# "blake2b_generic"
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# "bluetooth"
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# "bridge"
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# "btbcm"
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# "btqca"
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# "btrfs"
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# "btrtl"
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# "cec"
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# "cfg80211"
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# "chacha_neon"
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# "crc_ccitt"
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# "crct10dif_ce"
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# "crypto_engine"
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# "display_connector" #< NOT FOUND in pmos
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# "drm"
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# "drm_display_helper"
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# "drm_dma_helper"
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# "drm_kms_helper"
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# "drm_shmem_helper"
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# "dw_hdmi"
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# "dw_hdmi_cec" #< NOT FOUND in pmos
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# "dw_hdmi_i2s_audio"
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# "ecc"
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# "ecdh_generic"
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# "fuse"
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# "gc2145" #< NOT FOUND in megous-no-autoModules
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# "goodix_ts"
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# "gpio_vibra" #< NOT FOUND in megous-no-autoModules
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# "gpu_sched"
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# "hci_uart"
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# "i2c_gpio"
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# "inv_mpu6050" #< NOT FOUND in megous-no-autoModules
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# "inv_mpu6050_i2c" #< NOT FOUND in megous-no-autoModules
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# "inv_sensors_timestamp" #< NOT FOUND in megous-no-autoModules
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# "ip6t_rpfilter"
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# "ip6_udp_tunnel"
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# "ip_set"
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# "ip_set_hash_ipport"
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# "ip_tables"
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# "ipt_rpfilter"
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# "joydev"
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# "led_class_flash" #< NOT FOUND in megous-no-autoModules
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# "leds_sgm3140" #< NOT FOUND in megous-no-autoModules
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# "ledtrig_pattern" #< NOT FOUND in megous-no-autoModules
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# "libarc4"
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# "libchacha"
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# "libchacha20poly1305"
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# "libcrc32c"
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# "libcurve25519_generic"
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# "lima"
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# "llc"
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# "mac80211"
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# "macvlan"
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# "mc"
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# "modem_power"
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# "mousedev"
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# "nf_conntrack"
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# "nf_defrag_ipv4"
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# "nf_defrag_ipv6"
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# "nf_log_syslog"
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# "nf_nat"
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# "nfnetlink"
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# "nf_tables"
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# "nft_chain_nat"
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# "nft_compat"
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# "nls_cp437"
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# "nls_iso8859_1"
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# "nvmem_reboot_mode"
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# "ov5640"
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# "panel_sitronix_st7703"
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# "phy_sun6i_mipi_dphy"
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# "pinctrl_axp209" #< NOT FOUND in pmos
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# "pinephone_keyboard" #< NOT FOUND in megous-no-autoModules
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# "poly1305_neon"
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# "polyval_ce"
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# "polyval_generic"
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# "ppkb_manager" #< NOT FOUND in megous-no-autoModules
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# "pwm_bl"
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# "pwm_sun4i"
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# "qrtr"
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# "raid6_pq"
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# "rfkill"
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# "rtw88_8703b"
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# "rtw88_8723cs"
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# "rtw88_8723x"
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# "rtw88_core"
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# "rtw88_sdio"
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# "sch_fq_codel"
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# "sm4"
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# "snd_soc_bt_sco"
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# "snd_soc_ec25" #< NOT FOUND in megous-no-autoModules
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# "snd_soc_hdmi_codec"
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# "snd_soc_simple_amplifier"
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# "snd_soc_simple_card"
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# "snd_soc_simple_card_utils"
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# "stk3310" #< NOT FOUND in megous-no-autoModules
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# "st_magn"
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# "st_magn_i2c"
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# "st_magn_spi" #< NOT FOUND in pmos
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# "stp"
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# "st_sensors"
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# "st_sensors_i2c"
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# "st_sensors_spi" #< NOT FOUND in pmos
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# "sun4i_drm"
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# "sun4i_i2s"
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# "sun4i_lradc_keys" #< NOT FOUND in megous-no-autoModules
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# "sun4i_tcon"
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# "sun50i_codec_analog"
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# "sun6i_csi"
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# "sun6i_dma"
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# "sun6i_mipi_dsi"
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# "sun8i_a33_mbus" #< NOT FOUND in megous-no-autoModules
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# "sun8i_adda_pr_regmap"
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# "sun8i_ce" #< NOT FOUND in pmos
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# "sun8i_codec" #< NOT FOUND in megous-no-autoModules
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# "sun8i_di" #< NOT FOUND in megous-no-autoModules
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# "sun8i_drm_hdmi"
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# "sun8i_mixer"
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# "sun8i_rotate" #< NOT FOUND in megous-no-autoModules
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# "sun8i_tcon_top"
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# "sun9i_hdmi_audio" #< NOT FOUND in megous-no-autoModules
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# "sunxi_wdt" #< NOT FOUND in pmos
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# "tap"
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# "typec" #< NOT FOUND in pmos
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# "udp_tunnel"
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# "uio" #< NOT FOUND in pmos
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# "uio_pdrv_genirq"
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# "v4l2_async"
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# "v4l2_cci" #< NOT FOUND in pmos
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# "v4l2_flash_led_class" #< NOT FOUND in megous-no-autoModules
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# "v4l2_fwnode"
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# "v4l2_mem2mem"
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# "videobuf2_common"
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# "videobuf2_dma_contig"
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# "videobuf2_memops"
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# "videobuf2_v4l2"
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# "videodev"
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# "wireguard"
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# "xor"
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# "x_tables"
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# "xt_conntrack"
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# "xt_LOG"
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# "xt_nat"
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# "xt_pkttype"
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# "xt_set"
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# "xt_tcpudp"
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# "zram"
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];
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# disable proximity sensor.
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# the filtering/calibration is bad that it causes the screen to go fully dark at times.
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# boot.blacklistedKernelModules = [ "stk3310" ];
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boot.kernelParams = [
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# without this some GUI apps fail: `DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory`
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# this is because they can't allocate enough video ram.
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# see related nixpkgs issue: <https://github.com/NixOS/nixpkgs/issues/260222>
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# TODO(2023/12/03): remove once mesa 23.3.1 lands: <https://github.com/NixOS/nixpkgs/pull/265740>
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#
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# the default CMA seems to be 32M.
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# i was running fine with 256MB from 2022/07-ish through 2022/12-ish, but then the phone quit reliably coming back from sleep (phosh): maybe a memory leak?
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# bumped to 512M on 2023/01
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# bumped to 1536M on 2024/05
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# `cat /proc/meminfo` to see CmaTotal/CmaFree if interested in tuning this.
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# kernel param mentioned here: <https://cateee.net/lkddb/web-lkddb/CMA_SIZE_PERCENTAGE.html>
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# i think cma mem isn't exclusive -- it can be used as ordinary `malloc`, still. i heard someone suggest the OS default should just be 50% memory to CMA.
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"cma=1536M"
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# 2023/10/20: potential fix for the lima (GPU) timeout bugs:
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# - <https://gitlab.com/postmarketOS/pmaports/-/issues/805#note_890467824>
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"lima.sched_timeout_ms=2000"
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];
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systemd.services.unl0kr.preStart = ensureHWReady;
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}
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