many changes and more modularizing

hosts/fw-new/pkgs/kernel/vendor.nix

@@ -0,0 +1,61 @@
+# args of buildLinux:
+#   https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/os-specific/linux/kernel/generic.nix
+# Note that this method will use the deconfig in source tree,
+# commbined the common configuration defined in pkgs/os-specific/linux/kernel/common-config.nix, which is suitable for a NixOS system.
+# but it't not suitable for embedded systems, so we comment it out.
+# ================================================================
+# If you already have a generated configuration file, you can build a kernel that uses it with pkgs.linuxManualConfig
+# The difference between deconfig and the generated configuration file is that the generated configuration file is more complete,
+#
+{ fetchFromGitHub
+, linuxManualConfig
+, ubootTools
+, fetchurl
+, ...
+}:
+let
+  modDirVersion = "6.1.75";
+
+  panthor-base = "aa54fa4e0712616d44f2c2f312ecc35c0827833d";
+  panthor-head = "c81ebd8e12b64a42a6efd68cc0ed018b57d14e91";
+in
+(linuxManualConfig {
+  inherit modDirVersion;
+  version = "${modDirVersion}-jr-noble";
+  extraMeta.branch = "6.1";
+
+  # https://github.com/Joshua-Riek/linux-rockchip/tree/noble
+  src = fetchFromGitHub {
+    owner = "Joshua-Riek";
+    repo = "linux-rockchip";
+    rev = "5c43412639fd134f0ba690de2108eaa7ea349e2a";
+    hash = "sha256-aKm/RQTRTzLr8+ACdG6QW1LWn+ZOjQtlvU2KkZmYicg=";
+  };
+
+  # https://github.com/hbiyik/linux/tree/rk-6.1-rkr3-panthor
+  # allows usage of mainline mesa
+  kernelPatches = [{
+    name = "hbiyik-panthor.patch";
+    # NOTE: This needs to be `fetchurl` instead of `fetchpatch`, because `fetchpatch`
+    # reorders the patches, and the order matters since they're generated from commits.
+    patch = fetchurl {
+      url = "https://github.com/hbiyik/linux/compare/${panthor-base}...${panthor-head}.patch";
+      hash = "sha256-nSfmgem0CElUHL1wXSL+9aVixeaRjcxMyey4YaNdHfc=";
+    };
+    extraConfig = { };
+  }];
+
+  # Steps to the generated kernel config file
+  #  1. git clone --depth 1 https://github.com/hbiyik/linux.git -b rk-6.1-rkr3-panthor
+  #  2. put https://github.com/hbiyik/linux/blob/rk-6.1-rkr3-panthor/debian.rockchip/config/config.common.ubuntu to arch/arm64/configs/rk35xx_vendor_defconfig
+  #  3. run `nix develop .#fhsEnv` in this project to enter the fhs test environment defined here.
+  #  4. `make rk35xx_vendor_defconfig` in the kernel root directory to configure the kernel.
+  #  5. Then use `make menuconfig` in kernel's root directory to view and customize the kernel(like enable/disable rknpu, rkflash, ACPI(for UEFI) etc).
+  #  6. copy the generated .config to ./pkgs/kernel/rk35xx_vendor_config (also be sure to update the corresponding `.nix` file accordingly) and commit it.
+  # 
+  configfile = ./rk35xx_vendor_config;
+  config = import ./rk35xx_vendor_config.nix;
+}).overrideAttrs (old: {
+  name = "k"; # dodge uboot length limits
+  nativeBuildInputs = old.nativeBuildInputs ++ [ ubootTools ];
+})