forked from DGNum/liminix
rewrite phram boot to use correct sizes and offsets
This commit is contained in:
Daniel Barlow
parent
1a08aaad01
commit
dd8c8edd9c
8 changed files with 64 additions and 30 deletions
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@ -1,7 +1,6 @@
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{
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device
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, liminix-config ? <liminix-config>
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, phram ? false
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, nixpkgs ? <nixpkgs>
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}:
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@ -18,7 +17,6 @@ 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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./modules/outputs.nix
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] pkgs;
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@ -35,11 +35,15 @@
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};
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in {
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device = {
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defaultOutput = "directory";
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defaultOutput = "tftproot";
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loadAddress = "0x80060000";
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entryPoint = "0x80060000";
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};
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boot.tftp = {
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loadAddress = "0x00A00000";
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serverip = "192.168.8.148";
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ipaddr = "192.168.8.251";
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};
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kernel = {
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src = pkgs.pkgsBuildBuild.fetchurl {
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name = "linux.tar.gz";
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@ -22,7 +22,7 @@
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};
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in {
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device = {
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defaultOutput = "directory";
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defaultOutput = "tftproot";
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loadAddress = "0x80000000";
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entryPoint = "0x80000000";
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};
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@ -22,7 +22,7 @@
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};
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in {
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device = {
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defaultOutput = "directory";
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defaultOutput = "tftproot";
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loadAddress = "0x80000000";
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entryPoint = "0x80000000";
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};
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@ -41,6 +41,6 @@
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SERIAL_8250_CONSOLE= "y";
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};
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};
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device.defaultOutput = "directory";
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device.defaultOutput = "vmroot";
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};
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}
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@ -41,35 +41,16 @@ in
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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 (pkgs.lib.trivial) toHexString;
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uimageStart = 10485760; # 0xa00000
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squashfsStart = uimageStart + 4 * 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${toHexString squashfsStart} root=1f00";
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in
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pkgs.buildPackages.writeScript "firmware.bin" ''
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setenv serverip 192.168.8.148
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setenv ipaddr 192.168.8.251
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setenv bootargs '${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 = pkgs.runCommand "liminix" {} (''
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vmroot = pkgs.runCommand "qemu" {} ''
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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
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ln -s ${manifest} manifest
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ln -s ${kernel.headers} build
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'' +
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(if config.device.loadAddress != null then
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''
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ln -s ${uimage} uimage
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ln -s ${boot-scr} flash.scr
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'' else ""));
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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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@ -1,8 +1,24 @@
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{
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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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{
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let
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inherit (lib) mkOption types concatStringsSep;
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cfg = config.boot.tftp;
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in {
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options = {
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boot = {
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tftp = {
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loadAddress = mkOption { type = types.str; };
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# These names match the uboot environment variables. I reserve
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# the right to change them if I think of better ones.
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ipaddr = mkOption { type = types.str; };
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serverip = mkOption { type = types.str; };
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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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config = {
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@ -25,5 +41,37 @@
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};
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};
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outputs.tftproot =
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let o = config.outputs; in
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pkgs.runCommand "tftproot" {} ''
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mkdir $out
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cd $out
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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 ${o.boot-scr} flash.scr
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'';
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outputs.boot-scr =
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let
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inherit (pkgs.lib.trivial) toHexString;
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in
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pkgs.buildPackages.runCommand "" {} ''
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uimageSize=$(($(stat -L -c %s ${config.outputs.uimage}) + 0x1000 &(~0xfff)))
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squashfsStart=0x$(printf %x $((${cfg.loadAddress} + $uimageSize)))
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squashfsBytes=$(($(stat -L -c %s ${config.outputs.squashfs}) + 0x100000 &(~0xfffff)))
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squashfsMb=$(($squashfsBytes >> 20))
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cmd="mtdparts=phram0:''${squashfsMb}M(nix) phram.phram=phram0,''${squashfsStart},''${squashfsMb}Mi memmap=''${squashfsMb}M\$''${squashfsStart} root=1f00";
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cat > $out << EOF
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setenv serverip ${cfg.serverip}
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setenv ipaddr ${cfg.ipaddr}
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setenv bootargs '${concatStringsSep " " config.boot.commandLine} $cmd'
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tftp 0x$(printf %x ${cfg.loadAddress}) result/uimage ; tftp 0x$(printf %x $squashfsStart) result/squashfs
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bootm 0x$(printf %x ${cfg.loadAddress})
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EOF
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'';
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};
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}
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@ -3,6 +3,9 @@ let
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inherit (pkgs.liminix.networking) interface address udhcpc odhcpc route;
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inherit (pkgs.liminix.services) oneshot longrun bundle target;
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in rec {
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imports = [
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./modules/phram.nix
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];
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services.loopback =
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let iface = interface { type = "loopback"; device = "lo";};
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in bundle {
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