make config.hardware.dts.src nullable
This is for QEMU where we won't have to provide a dtb because the device tree is built by the platform according the (emulated) hardware present. Maybe in future there will be other hardware devices where we don't need to provide a dtb.
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parent
03b17fa3ed
commit
4229b42d82
2 changed files with 15 additions and 8 deletions
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@ -16,8 +16,14 @@ in {
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hardware = {
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dts = {
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src = mkOption {
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type = types.path;
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description = "Path to the device tree source (usually from OpenWrt)";
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type = types.nullOr types.path;
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description = ''
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If the device requires an external device tree to be loaded
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alongside the kernel, this is the path to the device tree source
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(we usually get these from OpenWrt). This value may be null if the
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platform creates the device tree - currently this is the case
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only for QEMU.
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'';
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};
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includes = mkOption {
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default = [];
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@ -9,6 +9,7 @@ let
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cfg = config.boot.loader.extlinux;
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o = config.system.outputs;
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cmdline = concatStringsSep " " config.boot.commandLine;
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wantsDtb = config.hardware.dts ? src && config.hardware.dts.src != null;
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in {
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options.system.outputs.extlinux = mkOption {
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type = types.package;
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@ -20,18 +21,18 @@ in {
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system.outputs.extlinux = pkgs.runCommand "extlinux" {} ''
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mkdir $out
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cd $out
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# cp {o.dtb} dtb
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${if wantsDtb then "cp ${o.dtb} dtb" else "true"}
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cp ${o.initramfs} initramfs
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gzip -9f < ${o.kernel} > kernel.gz
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cp ${o.zimage} kernel
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mkdir extlinux
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cat > extlinux/extlinux.conf << _EOF
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menu title Liminix
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timeout 100
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label Liminix
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kernel /boot/kernel.gz
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initrd /boot/initramfs
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append ${cmdline}
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# fdt /boot/dtb
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kernel /boot/kernel
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# initrd /boot/initramfs
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append ${cmdline} root=/dev/vda1
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${if wantsDtb then "fdt /boot/dtb" else ""}
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_EOF
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'';
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};
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