liminix

default.nix (5132B)

---

 # GL.iNet GL-MT300A
 
 {
   system = {
     crossSystem = {
       config = "mipsel-unknown-linux-musl";
       gcc = {
         abi = "32";
         arch = "mips32"; # maybe mips_24kc-
       };
     };
   };
 
   description = ''
 
     == GL.iNet GL-MT300A
 
     The GL-MT300A is based on a MT7620 chipset.
 
     For flashing from U-Boot, the firmware partition is from 0xbc050000 to
     0xbcfd0000.
 
     WiFi on this device is provided by the rt2800soc module. It expects
     firmware to be present in the "factory" MTD partition, so - assuming we
     want to use the wireless - we need to build MTD support into the kernel
     even if we're using TFTP root.
 
     === Installation
 
     The stock vendor firmware is a fork of OpenWrt, meaning that the binary
     created by `+system-outputs-mtdimage+` can be flashed using the vendor
     web UI or the U-Boot emergency "unbrick" routine.
 
     Flashing over an existing Liminix system is not possible while that
     system is running, otherwise you'll be overwriting flash partitions
     while they're in use - and that might not end well. Configure the system
     with `+levitate+` if you need to make it upgradable.
 
     Vendor web page: https://www.gl-inet.com/products/gl-mt300a/
 
     OpenWrt web page: https://openwrt.org/toh/gl.inet/gl-mt300a
 
   '';
 
   module =
     {
       pkgs,
       config,
       lib,
       lim,
       ...
     }:
     let
       openwrt = pkgs.openwrt_25_12;
       mac80211 = pkgs.kmodloader.override {
         targets = [ "rt2800soc" ];
         inherit (config.system.outputs) kernel;
       };
     in
     {
       imports = [
         ../../modules/arch/mipsel.nix
         ../../modules/outputs/tftpboot.nix
         ../../modules/outputs/mtdimage.nix
         ../../modules/outputs/jffs2.nix
       ];
       hardware = {
         defaultOutput = "mtdimage";
         loadAddress = lim.parseInt "0x80000000";
         entryPoint = lim.parseInt "0x80000000";
 
         # Creating 5 MTD partitions on "spi0.0":
         # 0x000000000000-0x000000030000 : "u-boot"
         # 0x000000030000-0x000000040000 : "u-boot-env"
         # 0x000000040000-0x000000050000 : "factory"
         # 0x000000050000-0x000000fd0000 : "firmware"
         # 2 uimage-fw partitions found on MTD device firmware
         # Creating 2 MTD partitions on "firmware":
         # 0x000000000000-0x000000260000 : "kernel"
         # 0x000000260000-0x000000f80000 : "rootfs"
 
         flash = {
           address = lim.parseInt "0xbc050000";
           size = lim.parseInt "0xf80000";
           eraseBlockSize = 65536;
         };
         rootDevice = "/dev/mtdblock5";
 
         dts = {
           src = "${openwrt.src}/target/linux/ramips/dts/mt7620a_glinet_gl-mt300a.dts";
           includePaths = [
             "${openwrt.src}/target/linux/ramips/dts"
           ];
         };
         networkInterfaces =
           let
             inherit (config.system.service.network) link;
             inherit (config.system.service) vlan;
           in
           rec {
             eth = link.build { ifname = "eth0"; };
             # lan and wan ports are both behind a switch on eth0
             lan = vlan.build {
               ifname = "eth0.1";
               primary = eth;
               vid = "1";
             };
             wan = vlan.build {
               ifname = "eth0.2";
               primary = eth;
               vid = "2";
             };
             wlan = link.build {
               ifname = "wlan0";
               dependencies = [ mac80211 ];
             };
           };
       };
       boot.tftp = {
         loadAddress = lim.parseInt "0x00A00000";
         appendDTB = true;
       };
 
       kernel = {
         src = openwrt.kernelSrc;
         version = openwrt.kernelVersion;
         extraPatchPhase = ''
           ${openwrt.applyPatches.ramips}
           ${openwrt.applyPatches.rt2x00}
         '';
         config = {
 
           RALINK = "y";
           PCI = "y";
           SOC_MT7620 = "y";
           CLK_MTMIPS = "y";
 
           SERIAL_8250_CONSOLE = "y";
           SERIAL_8250 = "y";
           SERIAL_CORE_CONSOLE = "y";
           SERIAL_OF_PLATFORM = "y";
 
           CONSOLE_LOGLEVEL_DEFAULT = "8";
           CONSOLE_LOGLEVEL_QUIET = "4";
 
           NET = "y";
           ETHERNET = "y";
           NET_VENDOR_RALINK = "y";
           NET_RALINK_MDIO = "y";
           NET_RALINK_MDIO_MT7620 = "y";
           NET_RALINK_MT7620 = "y";
           SWPHY = "y";
 
           SPI = "y";
           MTD_SPI_NOR = "y";
           SPI_MT7621 = "y"; # } probably don't need both of these
           SPI_RT2880 = "y"; # }
           SPI_MASTER = "y";
           SPI_MEM = "y";
 
           MTD = "y";
           MTD_BLOCK = "y"; # fix undefined ref to register_mtd_blktrans_devs
 
           EARLY_PRINTK = "y";
 
           NEW_LEDS = "y";
           LEDS_CLASS = "y"; # required by rt2x00lib
 
           PRINTK_TIME = "y";
         }
         // lib.optionalAttrs (config.system.service ? vlan) {
           SWCONFIG = "y";
         };
         conditionalConfig = {
           WLAN = {
             CRC_CCITT = "y";
             WLAN_VENDOR_RALINK = "y";
             RT2800SOC = "m";
             RT2X00 = "m";
           };
         };
 
       };
     };
 }