forked from DGNum/liminix
71 lines
2 KiB
Nix
71 lines
2 KiB
Nix
{
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config
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, pkgs
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, lib
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, ...
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}:
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let
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inherit (lib) mkOption types concatStringsSep;
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inherit (config.boot) tftp;
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in {
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options = {
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device.flash = {
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address = mkOption { type = types.str; };
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size = mkOption { type = types.str; };
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};
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};
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config = {
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kernel = {
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config = {
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MTD_SPLIT_UIMAGE_FW = "y";
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# ignore the commandline provided by U-Boot because it's most
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# likely wrong
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MIPS_CMDLINE_FROM_BOOTLOADER = lib.mkForce "n";
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MIPS_CMDLINE_FROM_DTB = "y";
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};
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};
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boot.commandLine = [
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"root=${config.device.rootDevice}"
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];
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outputs.firmware =
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let o = config.outputs; in
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pkgs.runCommand "firmware" {} ''
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dd if=${o.uimage} of=$out bs=128k conv=sync
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dd if=${o.squashfs} of=$out bs=128k conv=sync,nocreat,notrunc oflag=append
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'';
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outputs.flashable =
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let o = config.outputs; in
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pkgs.runCommand "flashable" {} ''
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mkdir $out
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cd $out
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ln -s ${o.firmware} firmware.bin
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ln -s ${o.squashfs} squashfs
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ln -s ${o.kernel} vmlinux
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ln -s ${o.manifest} manifest
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ln -s ${o.kernel.headers} build
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ln -s ${o.uimage} uimage
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ln -s ${o.dtb} dtb
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ln -s ${o.flash-scr} flash.scr
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'';
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outputs.flash-scr =
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let
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inherit (pkgs.lib.trivial) toHexString;
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inherit (pkgs.lib.lists) concatStringsSep;
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inherit (config.device) flash;
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in
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pkgs.buildPackages.runCommand "" {} ''
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imageSize=$(stat -L -c %s ${config.outputs.firmware})
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cat > $out << EOF
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setenv serverip ${tftp.serverip}
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setenv ipaddr ${tftp.ipaddr}
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tftp 0x$(printf %x ${tftp.loadAddress}) result/firmware.bin
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erase 0x$(printf %x ${flash.address}) +0x$(printf %x ${flash.size})
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cp.b 0x$(printf %x ${tftp.loadAddress}) 0x$(printf %x ${flash.address}) \''${filesize}
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echo command line was ${builtins.toJSON (concatStringsSep " " config.boot.commandLine)}
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EOF
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'';
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};
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}
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