# Ignore double dash in version for rpmbuild
%define _wrong_version_format_terminate_build 0

%define config_name tizen_bcm2711_defconfig
%define buildarch arm
%define target_board rpi4
%define variant %{buildarch}-%{target_board}

Name: rpi4-linux-kernel
Summary: The Linux Kernel for Raspberry Pi4
Version: 5.4.40
Release: 0
License: GPL-2.0
ExclusiveArch: %{arm}
Group: System/Kernel
Vendor: The Linux Community
URL: https://www.kernel.org
Source0:   linux-kernel-%{version}.tar.xz
BuildRoot: %{_tmppath}/%{name}-%{PACKAGE_VERSION}-root

%define fullVersion %{version}-%{variant}

BuildRequires: bc
BuildRequires: module-init-tools
BuildRequires: bison
BuildRequires: flex
BuildRequires: libopenssl1.1-devel

%description
The Linux Kernel, the operating system core itself

%package -n %{variant}-linux-kernel
License: GPL-2.0
Summary: Tizen kernel for %{target_board}
Group: System/Kernel
Provides: %{variant}-kernel-uname-r = %{fullVersion}
Provides: linux-kernel = %{version}-%{release}

%description -n %{variant}-linux-kernel
This package contains the Linux kernel for Tizen (arch %{buildarch}, target board %{target_board})

%package -n %{variant}-linux-kernel-modules
Summary: Kernel modules for %{target_board}
Group: System/Kernel
Provides: %{variant}-kernel-modules = %{fullVersion}
Provides: %{variant}-kernel-modules-uname-r = %{fullVersion}

%description -n %{variant}-linux-kernel-modules
Kernel-modules includes the loadable kernel modules(.ko files) for %{target_board}

%package -n %{variant}-linux-kernel-devel
License: GPL-2.0
Summary: Linux support kernel map and etc for other packages
Group: System/Kernel
Provides: %{variant}-kernel-devel = %{fullVersion}
Provides: %{variant}-kernel-devel-uname-r = %{fullVersion}

%description -n %{variant}-linux-kernel-devel
This package provides kernel map and etc information.

%package -n %{variant}-linux-kernel-headers
License: GPL-2.0
Summary: Linux support headers for userspace development
Group: System/Kernel
Provides: kernel-headers-tizen-dev

%description -n %{variant}-linux-kernel-headers
This package provides userspaces headers from the Linux kernel. These
headers are used by the installed headers for GNU glibc and other system
 libraries.

%prep
%setup -q -n linux-kernel-%{version}

%build
%{?asan:/usr/bin/gcc-unforce-options}
%{?ubsan:/usr/bin/gcc-unforce-options}

# Make sure EXTRAVERSION says what we want it to say
sed -i "s/^EXTRAVERSION.*/EXTRAVERSION = -%{variant}/" Makefile

# 0. extract uapi headers
mkdir -p uapi-headers/usr
make mrproper
make headers_check
make headers_install INSTALL_HDR_PATH=uapi-headers/usr

# 1-1. Set config file
make %{config_name}

# 1-2. Build Image/Image.gz
make %{?_smp_mflags}

# 1-3. Build dtbs
make dtbs %{?_smp_mflags}

# 1-4. Build modules
make modules %{?_smp_mflags}

%install
QA_SKIP_BUILD_ROOT="DO_NOT_WANT"; export QA_SKIP_BUILD_ROOT

# 2-1. Destination directories
mkdir -p %{buildroot}/boot
mkdir -p %{buildroot}/lib/modules

# 2-2. Install kernel binary and DTB
install -m 644 arch/%{buildarch}/boot/zImage %{buildroot}/boot/
install -m 644 arch/%{buildarch}/boot/dts/bcm*.dtb %{buildroot}/boot/

# 2-3. Install modules
make INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=%{buildroot} modules_install

# 2-4. Install boot binary files
install -m 644 rpi4/boot/config.txt %{buildroot}/boot/
install -m 644 rpi4/boot/LICENCE.broadcom %{buildroot}/boot/
install -m 644 rpi4/boot/start*.elf %{buildroot}/boot/
install -m 644 rpi4/boot/fixup*.dat %{buildroot}/boot/

# 2-5. Install uapi headers
find uapi-headers/usr/include -name ".install" -delete
find uapi-headers/usr/include -name "..install.cmd" -delete
mv uapi-headers/usr %{buildroot}

# 3-1. remove unnecessary files to prepare for devel package
rm -rf uapi-headers
find %{_builddir}/linux-kernel-%{version} -name ".tmp_vmlinux*" -delete
find %{_builddir}/linux-kernel-%{version} -name ".gitignore" -delete
find %{_builddir}/linux-kernel-%{version} -name "\.*dtb*tmp" -delete
find %{_builddir}/linux-kernel-%{version} -name "\.*dtb" -delete
find %{_builddir}/linux-kernel-%{version} -name "*\.*tmp" -delete
find %{_builddir}/linux-kernel-%{version} -name "vmlinux" -delete
find %{_builddir}/linux-kernel-%{version} -name "Image" -delete
find %{_builddir}/linux-kernel-%{version} -name "zImage" -delete
find %{_builddir}/linux-kernel-%{version} -name "Image.gz" -delete
find %{_builddir}/linux-kernel-%{version} -name "*.cmd" -delete
find %{_builddir}/linux-kernel-%{version} -name "*\.ko" -delete
find %{_builddir}/linux-kernel-%{version} -name "*\.o" -delete
find %{_builddir}/linux-kernel-%{version} -name "*\.S" -delete
find %{_builddir}/linux-kernel-%{version} -name "*\.HEX" -type f -delete
find %{_builddir}/linux-kernel-%{version} -name "*\.c" -not -path "%{_builddir}/linux-kernel-%{version}/scripts/*" -delete

# 3-2. move files for devel package
cp -r  %{_builddir}/linux-kernel-%{version}/ %{_builddir}/kernel-devel-%{variant}/

# 4. Move files for each package
mkdir -p %{buildroot}/boot/kernel/devel
mv %{_builddir}/kernel-devel-%{variant} %{buildroot}/boot/kernel/devel/


%clean
rm -rf %{buildroot}
rm -rf %{_builddir}/usr

%files -n %{variant}-linux-kernel-modules
/lib/modules/*

%files -n %{variant}-linux-kernel-devel
/boot/kernel/devel/*

%files -n %{variant}-linux-kernel
%license COPYING
/boot/zImage
/boot/bcm*.dtb
/boot/config.txt
/boot/LICENCE.broadcom
/boot/start*.elf
/boot/fixup*.dat

%files -n %{variant}-linux-kernel-headers
/usr/include/*