%if !0%{?rhel}
%global qemu_bin qemu-system-aarch64
%else
%global qemu_bin qemu-kvm
%endif

Name:           autosig-qemu-dtb
Version:        0.1
Release:        4%{?dist}
Summary:        Dtb for qemu

# This is the qemu licences. Don't know what the actual output file license really is
License:        GPLv2 and BSD and MIT and CC-BY

BuildRequires:  qemu-kvm autosig-u-boot

# No dtbs in x86-land so it makes sense
ExclusiveArch:  aarch64

%global with_kvm       0

%description
Create dtb for use with aarch64 qemu, in combination with autosig-u-boot firmware.

%prep
rm -rf %{name}-{%version}
mkdir %{name}-{%version}

%build

cd %{name}-{%version}
export PATH=$PATH:/usr/libexec

%if 0%{?with_kvm}
# check if kvm exists, if it doesn't, the environment isn't suitable to dump
# kvm dtbs, cbs is not kvm enabled, so it cannot generate dtbs that work with
# kvm guest
[ -e "/dev/kvm" ]
%{qemu_bin} -smp 1 -machine virt,accel=kvm -m 4G -cpu max -bios /boot/u-boot.bin -machine dumpdtb=qemu-kvm.dtb
%endif

%{qemu_bin} -smp 1 -machine virt,accel=tcg -m 4G -cpu max -bios /boot/u-boot.bin -machine dumpdtb=qemu-tcg.dtb

%install
cd %{name}-{%version}

%if 0%{?with_kvm}
install -Dm 0644 qemu-kvm.dtb %{buildroot}%{_datadir}/qemu/qemu-kvm.dtb
%endif

install -Dm 0644 qemu-tcg.dtb %{buildroot}%{_datadir}/qemu/qemu-tcg.dtb

%files
%if 0%{?with_kvm}
%{_datadir}/qemu/qemu-kvm.dtb
%endif

%{_datadir}/qemu/qemu-tcg.dtb

%changelog
* Mon Mar 13 2023 Eric Curtin <ecurtin@redhat.com>
- Dump only tcg dtb. There's a with_kvm flag you can flip if you want to build.

* Wed Jan 11 2023 Eric Curtin <ecurtin@redhat.com>
- Install dtbs to /usr/share/qemu/ to be ostree compatible
- Dump both tcg and kvm dtbs

* Wed Aug 17 2022 Alexander Larsson <alexl@redhat.com>
- Initial version