Add Arm64 support - #3
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```
qemu-system-aarch64 \
-M virt,dumpdtb=qemu-virt-arm64.dtb \
-cpu cortex-a57 \
-m 2G \
-kernel zig-out/img/ArtInitium.arm64.img \
-dtb zig-out/dtb/qemu-virt-arm64.dtb \
-device virtio-gpu-pci \
-device virtio-keyboard-pci \
-device virtio-mouse-pci \
-serial file:serial.log
dtc -I dtb -O dts qemu-virt-arm64.dtb > dts/qemu-virt-arm64.dts
```
building would build only one target or nothing because we re-defined the default step - each file-based build target (per arch) returns a step which should be added to the build_selected step - added binman path variable - pipx location not in my path by default - use llvm-objcopy by using a weird zig syntax (b.graph.zig_exe) so that no cross comp tools needed - remove dtb from arm64 image file, and don't specify size. the dtb is passed separately
we store it in x19, and use it as the argument to ArtInitium_entry later.
…hat I write each part as an exercise
…eader struct which has methods
…om the Header struct which has methods" This reverts commit 7bebd9e. This is not necessary because member functions are not part of the struct (no vtable) so it's not the same as c++. It is safe to keep it as one struct
Signed-off-by: Artie Poole <stuart.poole@canonical.com>
Signed-off-by: Artie Poole <stuart.poole@canonical.com>
Signed-off-by: Artie Poole <stuart.poole@canonical.com>
Signed-off-by: Artie Poole <stuart.poole@canonical.com>
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Provides support for arm64 up until the device tree is parsed once.