forked from dan/liminix
add 'phram' param for tftp boot without flashing
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e78028e58f
commit
5feda1a1e6
23
default.nix
23
default.nix
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@ -1,4 +1,6 @@
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{ device ? (import devices/gl-ar750.nix)
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{
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device ? (import devices/gl-ar750.nix)
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, phram ? false
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}:
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let
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@ -12,6 +14,7 @@ let
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<liminix-config>
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./modules/s6
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./modules/users.nix
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(if phram then ./modules/phram.nix else (args: {}))
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] nixpkgs.pkgs;
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squashfs = liminix.builders.squashfs config.filesystem.contents;
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kernel = callPackage ./kernel {
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@ -37,6 +40,22 @@ let
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dd if=${uimage} of=$out/firmware.bin bs=128k conv=sync
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dd if=${squashfs} of=$out/firmware.bin bs=128k conv=sync,nocreat,notrunc oflag=append
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'';
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boot-scr =
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let
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inherit (nixpkgs.lib.trivial) toHexString;
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uimageStart = 10485760; # 0xa00000
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squashfsStart = uimageStart + 2 * 1024 * 1024;
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squashfsSize = 8;
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cmd = "mtdparts=phram0:${toString squashfsSize}M(nix) phram.phram=phram0,0x${toHexString squashfsStart},${toString squashfsSize}Mi memmap=${toString squashfsSize}M\$0x${toHexString squashfsStart} root=1f00";
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in
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nixpkgs.pkgs.buildPackages.writeScript "firmware.bin" ''
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setenv serverip 192.168.8.148
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setenv ipaddr 192.168.8.251
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setenv bootargs '${concatStringsSep " " config.boot.commandLine} ${cmd}'
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tftp 0x8${toHexString uimageStart} result/uimage ; tftp 0x8${toHexString squashfsStart} result/squashfs
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bootm 0x${toHexString uimageStart}
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'';
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directory = nixpkgs.pkgs.runCommand "liminix" {} ''
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mkdir $out
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cd $out
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@ -44,6 +63,8 @@ let
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ln -s ${kernel.vmlinux} vmlinux
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ln -s ${manifest} manifest
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ln -s ${uimage} uimage
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${if phram then "ln -s ${boot-scr} boot.scr" else ""}
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ln -s ${boot-scr} flash.scr
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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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@ -0,0 +1,29 @@
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{
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config
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, ...
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}:
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{
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config = {
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kernel = {
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checkedConfig = {
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MTD = "y";
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MTD_PHRAM = "y";
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MTD_CMDLINE_PARTS = "y";
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# one or more of the following is required to get from
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# VFS: Cannot open root device "1f00" or unknown-block(31,0): error -6
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# to
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# VFS: Mounted root (squashfs filesystem) readonly on device 31:0.
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MTD_OF_PARTS = "y";
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PARTITION_ADVANCED = "y";
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MSDOS_PARTITION = "y";
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EFI_PARTITION = "y";
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MTD_BLKDEVS = "y";
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MTD_BLOCK = "y";
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# CONFIG_MTD_MTDRAM=m c'est quoi?
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};
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};
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};
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}
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