generate probably-non-functional firmware image for gl-ar750
parent
a1a1abb8c7
commit
f9626d00f4
30
default.nix
30
default.nix
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@ -16,19 +16,33 @@ let
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kernel = callPackage ./kernel {
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inherit (config.kernel) config checkedConfig;
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};
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in {
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outputs = {
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outputs = rec {
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inherit squashfs kernel;
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default = nixpkgs.pkgs.runCommand "both-kinds" {} ''
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mkdir $out
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cd $out
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ln -s ${squashfs} squashfs
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ln -s ${kernel.vmlinux} vmlinux
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'';
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uimage = kernel.uimage {
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inherit (device.boot) loadAddress entryPoint;
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inherit (kernel) vmlinux;
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};
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combined-image = nixpkgs.pkgs.runCommand "firmware.bin" {
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nativeBuildInputs = [ nixpkgs.buildPackages.ubootTools ];
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} ''
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dd if=${uimage} of=$out bs=128k conv=sync
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dd if=${squashfs} of=$out bs=128k conv=sync,nocreat,notrunc oflag=append
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'';
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directory = nixpkgs.pkgs.runCommand "both-kinds" {} ''
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mkdir $out
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cd $out
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ln -s ${squashfs} squashfs
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ln -s ${kernel.vmlinux} vmlinux
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'';
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# this exists so that you can run "nix-store -q --tree" on it and find
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# out what's in the image, which is nice if it's unexpectedly huge
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manifest = writeText "manifest.json" (builtins.toJSON config.filesystem.contents);
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};
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in {
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outputs = outputs // { default = outputs.${device.outputs.default}; };
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# this is just here as a convenience, so that we can get a
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# cross-compiling nix-shell for any package we're customizing
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inherit (nixpkgs) pkgs;
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@ -1,3 +1,21 @@
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# GL.INet GL-AR750 "Creta" travel router
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# - QCA9531 @650Mhz SoC
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# - dual band wireless: IEEE 802.11a/b/g/n/ac
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# - two 10/100Mbps LAN ports and one WAN
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# - 128MB DDR2 RAM / 16MB NOR Flash
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# - "ath79" soc family
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# https://www.gl-inet.com/products/gl-ar750/
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# I like GL.iNet devices because they're relatively accessible to
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# DIY users: the serial port connections have headers preinstalled
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# and don't need soldering
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# The default output is a combined image containing a kernel
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# packaged as a "uimage" and initrd filesystem. This can be
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# downloaded to the device using TFTP and then written into
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# flash, or if PHRAM suport is enabled (handy for development)
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# unpacked and run directly into RAM
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{
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system = {
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crossSystem = {
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@ -8,4 +26,55 @@
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};
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};
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};
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kernel = {
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checkedConfig = {
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"MIPS_RAW_APPENDED_DTB" = "y";
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};
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config = {
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# this is all copied from nixwrt ath79 config. Clearly not all
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# of it is device config, some of it is wifi config or
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# installation method config or ...
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"BLK_DEV_INITRD" = "n";
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"CMDLINE_PARTITION" = "y";
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"DEBUG_INFO" = "y";
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"DEVTMPFS" = "y";
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"EARLY_PRINTK" = "y";
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"FW_LOADER" = "y";
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# we don't have a user helper, so we get multiple 60s pauses
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# at boot time unless we disable trying to call it
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"FW_LOADER_USER_HELPER" = "n";
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"IMAGE_CMDLINE_HACK" = "n";
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"IP_PNP" = "y";
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"JFFS2_FS" = "n";
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"MIPS_RAW_APPENDED_DTB" = "y";
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"MODULE_SIG" = "y";
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"MTD_CMDLINE_PARTS" = "y";
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"MTD_SPLIT_FIRMWARE" = "y";
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"PARTITION_ADVANCED" = "y";
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"PRINTK_TIME" = "y";
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"SQUASHFS" = "y";
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"SQUASHFS_XZ" = "y";
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"ASN1" = "y";
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"ASYMMETRIC_KEY_TYPE" = "y";
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"ASYMMETRIC_PUBLIC_KEY_SUBTYPE" = "y";
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"CRC_CCITT" = "y";
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"CRYPTO" = "y";
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"CRYPTO_ARC4" = "y";
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"CRYPTO_CBC" = "y";
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"CRYPTO_CCM" = "y";
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"CRYPTO_CMAC" = "y";
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"CRYPTO_GCM" = "y";
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"CRYPTO_HASH_INFO" = "y";
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"CRYPTO_LIB_ARC4" = "y";
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"CRYPTO_RSA" = "y";
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"CRYPTO_SHA1" = "y";
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"ENCRYPTED_KEYS" = "y";
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"KEYS" = "y";
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};
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};
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outputs.default = "combined-image";
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boot = {
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loadAddress = "0x80060000";
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entryPoint = "0x80060000";
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};
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}
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@ -1,3 +1,7 @@
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# This "device" generates images that can be used with the QEMU
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# emulator. The default output is a directory containing separate
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# kernel (uncompressed vmlinux) and initrd (squashfs) images
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{
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system = {
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crossSystem = {
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@ -446,4 +450,5 @@
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VIRTIO_NET = "y";
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};
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};
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outputs.default = "directory";
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}
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@ -34,9 +34,9 @@ let
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cp -a . $out
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'';
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};
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in
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{
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in rec {
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vmlinux = callPackage ./vmlinux.nix {
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inherit tree config checkedConfig;
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};
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uimage = callPackage ./uimage.nix { };
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}
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@ -0,0 +1,42 @@
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{
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lzma
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, stdenv
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, ubootTools
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} :
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let
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objcopy = "${stdenv.cc.bintools.targetPrefix}objcopy";
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in {
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vmlinux
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# , commandLine
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# , fdt ? null
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, entryPoint
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# , extraName ? "" # e.g. socFamily
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, loadAddress
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} :
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# patchDtbCommand = if (fdt != null) then ''
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# ( cat vmlinux.stripped ${fdt} > vmlinux.tmp ) && mv vmlinux.tmp vmlinux.stripped
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# '' else ''
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# echo patch-cmdline vmlinux.stripped '${commandLine}'
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# patch-cmdline vmlinux.stripped '${commandLine}'
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# echo
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# '';
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stdenv.mkDerivation {
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name = "kernel.image";
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phases = [ "buildPhase" "installPhase" ];
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nativeBuildInputs = [
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# patchImage
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lzma
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stdenv.cc
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ubootTools
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];
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buildPhase = ''
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${objcopy} -O binary -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id -S ${vmlinux} vmlinux.stripped
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# {patchDtbCommand}
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rm -f vmlinux.stripped.lzma
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lzma -k -z vmlinux.stripped
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mkimage -A mips -O linux -T kernel -C lzma -a ${loadAddress} -e ${entryPoint} -n 'MIPS Liminix Linux ' -d vmlinux.stripped.lzma kernel.image
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'';
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installPhase = ''
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cp kernel.image $out
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'';
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}
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@ -31,6 +31,7 @@ in {
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};
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checkedConfig = mkOption {
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type = types.attrsOf types.nonEmptyStr;
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default = {};
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};
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};
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groups = mkOption {
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