liminix

default.nix (7101B)

---

 {
   description = ''
     Belkin RT-3200 / Linksys E8450
     ******************************
 
     This device is based on a 64 bit Mediatek MT7622 ARM platform,
     and is "work in progress" in Liminix.
 
     .. note:: The factory flash image contains ECC errors that make it
               incompatible with Liminix: you need to use the `OpenWrt
               UBI Installer <https://github.com/dangowrt/owrt-ubi-installer>`_ to
               rewrite the partition layout before you can flash
               Liminix onto it (or even use it with
               :ref:`system-outputs-tftpboot`, if you want the wireless
               to work).
 
     Hardware summary
     ================
 
     - MediaTek MT7622BV (1350MHz)
     - 128MB NAND flash
     - 512MB	RAM
     - b/g/n wireless using MediaTek MT7622BV (MT7615E driver)
     - a/n/ac/ax wireless using  MediaTek MT7915E
 
 
     Installation
     ============
 
     Installation is currently a manual process (you need a :ref:`serial <serial>` conection and
     TFTP) following the instructions at :ref:`system-outputs-ubimage`
 
 '';
 
   system = {
     crossSystem = {
       config = "aarch64-unknown-linux-musl";
     };
   };
 
   module = {pkgs, config, lib, lim, ... }:
     let firmware = pkgs.stdenv.mkDerivation {
           name = "wlan-firmware";
           phases = ["installPhase"];
           installPhase = ''
             mkdir $out
             cp ${pkgs.linux-firmware}/lib/firmware/mediatek/{mt7915,mt7615,mt7622}* $out
           '';
         };
     in {
       imports = [
         ../../modules/arch/aarch64.nix
         ../../modules/outputs/tftpboot.nix
         ../../modules/outputs/ubifs.nix
       ];
       config = {
     kernel = {
       src = pkgs.pkgsBuildBuild.fetchurl {
         name = "linux.tar.gz";
         url = "https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.15.137.tar.gz";
         hash = "sha256-PkdzUKZ0IpBiWe/RS70J76JKnBFzRblWcKlaIFNxnHQ=";
       };
       extraPatchPhase = ''
           ${pkgs.openwrt.applyPatches.mediatek}
       '';
       config = {
         PCI = "y";
         ARCH_MEDIATEK = "y";
         # ARM_MEDIATEK_CPUFREQ = "y";
 
         # needed for "Cannot find regmap for /infracfg@10000000"
         MFD_SYSCON = "y";
         MTK_INFRACFG = "y";
 
         MTK_PMIC_WRAP = "y";
         NVMEM_MTK_EFUSE="y";
         # MTK_HSDMA="y";
         MTK_SCPSYS="y";
         MTK_SCPSYS_PM_DOMAINS="y";
         # MTK_THERMAL="y";
         MTK_TIMER="y";
 
         COMMON_CLK_MT7622 = "y";
         COMMON_CLK_MT7622_ETHSYS = "y";
         COMMON_CLK_MT7622_HIFSYS = "y";
         COMMON_CLK_MT7622_AUDSYS = "y";
         PM_CLK="y";
 
         REGMAP_MMIO = "y";
         CLKSRC_MMIO = "y";
         REGMAP = "y";
 
         MEDIATEK_GE_PHY = "y";
         # MEDIATEK_MT6577_AUXADC = "y";
         NET_MEDIATEK_SOC = "y";
         NET_MEDIATEK_SOC_WED = "y";
         NET_MEDIATEK_STAR_EMAC = "y"; # this enables REGMAP_MMIO
         NET_VENDOR_MEDIATEK = "y";
         PCIE_MEDIATEK = "y";
 
         BLOCK = "y"; # move this to base option
 
         SPI_MASTER = "y";
         SPI = "y";
         SPI_MEM="y";
         SPI_MTK_NOR="y";
         SPI_MTK_SNFI = "y";
 
         MTD = "y";
         MTD_BLOCK = "y";
         MTD_RAW_NAND = "y";
         MTD_NAND_MTK = "y";
         MTD_NAND_MTK_BMT = "y";      # Bad-block Management Table
         MTD_NAND_ECC_MEDIATEK= "y";
         MTD_NAND_ECC_SW_HAMMING= "y";
         MTD_SPI_NAND= "y";
         MTD_OF_PARTS = "y";
         MTD_NAND_CORE= "y";
         MTD_SPI_NOR= "y";
         MTD_SPLIT_FIRMWARE= "y";
         MTD_SPLIT_FIT_FW= "y";
 
 
         MMC = "y";
         MMC_BLOCK = "y";
         MMC_CQHCI = "y";
         MMC_MTK = "y";
 
         # Distributed Switch Architecture is needed
         # to make the ethernet ports visible
         NET_DSA="y";
         NET_DSA_MT7530="y";
         NET_DSA_TAG_MTK="y";
 
         PSTORE = "y";
         PSTORE_RAM = "y";
         PSTORE_CONSOLE = "y";
         PSTORE_DEFLATE_COMPRESS = "n";
 
         SERIAL_8250 = "y";
         SERIAL_8250_CONSOLE = "y";
         SERIAL_8250_MT6577="y";
         # SERIAL_8250_NR_UARTS="3";
         # SERIAL_8250_RUNTIME_UARTS="3";
         SERIAL_OF_PLATFORM="y";
 
         # Must enble hardware watchdog drivers. Else the device reboots after several seconds
         WATCHDOG = "y";
         MEDIATEK_WATCHDOG = "y";
       };
       conditionalConfig = {
         WLAN= {
           MT7615E = "m";
           MT7622_WMAC = "y";
           MT7915E = "m";
         };
       };
     };
     boot = {
       commandLine = [ "console=ttyS0,115200" ];
       tftp.loadAddress = lim.parseInt "0x4007ff28";
       imageFormat = "fit";
     };
     filesystem =
       let inherit (pkgs.pseudofile) dir symlink;
            in
              dir {
                lib = dir {
                  firmware = dir {
                    mediatek = symlink firmware;
                  };
                };
              };
 
     hardware =
       let
         openwrt = pkgs.openwrt;
         mac80211 =  pkgs.kmodloader.override {
           targets = ["mt7615e" "mt7915e"];
           inherit (config.system.outputs) kernel;
         };
       in {
         ubi = {
           minIOSize = "2048";
           eraseBlockSize = "126976";
           maxLEBcount = "1024"; # guessing
         };
 
         defaultOutput = "ubimage";
         # the kernel expects this to be on a 2MB boundary. U-Boot
         # (I don't know why) has a default of 0x41080000, which isn't.
         # We put it at the 32MB mark so that tftpboot can put its rootfs
         # image and DTB underneath, but maybe this is a terrible waste of
         # RAM unless the kernel is able to reuse it later. Oh well
         loadAddress = lim.parseInt "0x42000000";
         entryPoint = lim.parseInt "0x42000000";
         rootDevice = "ubi0:liminix";
         dts = {
           src = "${openwrt.src}/target/linux/mediatek/dts/mt7622-linksys-e8450-ubi.dts";
           includes =  [
             "${openwrt.src}/target/linux/mediatek/dts"
             "${config.system.outputs.kernel.modulesupport}/arch/arm64/boot/dts/mediatek/"
           ];
         };
 
         # - 0x000000000000-0x000008000000 : "spi-nand0"
         #         - 0x000000000000-0x000000080000 : "bl2"
         #         - 0x000000080000-0x0000001c0000 : "fip"
         #         - 0x0000001c0000-0x0000002c0000 : "factory"
         #         - 0x0000002c0000-0x000000300000 : "reserved"
         #         - 0x000000300000-0x000008000000 : "ubi"
 
         networkInterfaces =
           let
             inherit (config.system.service.network) link;
             inherit (config.system.service) bridge;
           in rec {
             wan = link.build { ifname = "wan"; };
             lan1 = link.build { ifname = "lan1"; };
             lan2 = link.build { ifname = "lan2"; };
             lan3 = link.build { ifname = "lan3"; };
             lan4 = link.build { ifname = "lan4"; };
             lan = lan3;
 
             wlan = link.build {
               ifname = "wlan0";
               dependencies = [ mac80211 ];
             };
             wlan5 = link.build {
               ifname = "wlan1";
               dependencies = [ mac80211 ];
             };
           };
       };
       };
   };
 }