use FIT images not appended DTB for aarch64 uimage
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2 changed files with 59 additions and 3 deletions
50
pkgs/kernel/kernel_fdt.its
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50
pkgs/kernel/kernel_fdt.its
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@ -0,0 +1,50 @@
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/dts-v1/;
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// used on aarch64 to provide a U-bootable image that combines
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// kernel and fdt
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/ {
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description = "Simple image with single Linux kernel and FDT blob";
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#address-cells = <1>;
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images {
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kernel {
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description = "Vanilla Linux kernel";
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// data = /incbin/("./vmlinux.bin.gz");
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type = "kernel";
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arch = "arm64";
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os = "linux";
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// compression = "gzip";
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// load = <00000000>;
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// entry = <00000000>;
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hash-1 {
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algo = "crc32";
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};
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hash-2 {
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algo = "sha1";
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};
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};
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fdt-1 {
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description = "Flattened Device Tree blob";
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// data = /incbin/("./target.dtb");
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type = "flat_dt";
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arch = "arm64";
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compression = "none";
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hash-1 {
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algo = "crc32";
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};
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hash-2 {
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algo = "sha1";
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};
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};
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};
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configurations {
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default = "conf-1";
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conf-1 {
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description = "Boot Linux kernel with FDT blob";
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kernel = "kernel";
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fdt = "fdt-1";
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};
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};
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};
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@ -35,7 +35,6 @@ stdenv.mkDerivation {
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dtc -I dtb -O dts -o tmp.dts ${dtb}
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echo '/{ chosen { bootargs = ${builtins.toJSON commandLine}; }; };' >> tmp.dts
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dtc -I dts -O dtb -o tmp.dtb tmp.dts
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${objcopy} --update-section .appended_dtb=tmp.dtb vmlinux.elf || ${objcopy} --add-section .appended_dtb=${dtb} vmlinux.elf
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'';
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buildPhase =
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@ -51,9 +50,16 @@ stdenv.mkDerivation {
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in ''
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${objcopy} -O binary -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id -S vmlinux.elf vmlinux.bin
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rm -f vmlinux.bin.lzma ; lzma -k -z vmlinux.bin
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mkimage -A ${arch} -O linux -T kernel -C lzma -a ${loadAddress} -e ${entryPoint} -n '${lib.toUpper arch} Liminix Linux ${extraName}' -d vmlinux.bin.lzma kernel.uimage
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cat ${./kernel_fdt.its} > mkimage.its
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echo '/ { images { kernel { data = /incbin/("./vmlinux.bin.lzma"); }; }; };' >> mkimage.its
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echo '/ { images { kernel { load = <${loadAddress}>; }; }; };' >> mkimage.its
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echo '/ { images { kernel { entry = <${entryPoint}>; }; }; };' >> mkimage.its
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echo '/ { images { kernel { compression = "lzma"; }; }; };' >> mkimage.its
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echo '/ { images { fdt-1 { data = /incbin/("./tmp.dtb"); }; }; }; ' >> mkimage.its
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mkimage -f mkimage.its mkimage.itb
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mkimage -l mkimage.itb
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'';
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installPhase = ''
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cp kernel.uimage $out
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cp mkimage.itb $out
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'';
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}
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