Provide a legacy PXE boot core.0

This enables PXE booting with grub2 rather than syslinux.

Signed-off-by: Chris Adams <linux@cmadams.net>
[rharwood: bump spec, fix commit message]
Signed-off-by: Robbie Harwood <rharwood@redhat.com>

grub.macros

@@ -623,6 +623,16 @@ if [ %{3} -eq 0 ]; then						\
 	${RPM_BUILD_ROOT}/%{_bindir}/grub2-editenv		\\\
 		${RPM_BUILD_ROOT}/boot/grub2/grubenv create	\
 fi								\
+mkdir pxe							\
+./grub-mknetdir							\\\
+	--directory ./grub-core					\\\
+	--fonts=""						\\\
+	--locales=""						\\\
+	--themes=""						\\\
+	--modules="configfile gzio linux reboot test"		\\\
+	--net-directory=pxe					\\\
+	--subdir .						\
+mv pxe/*/core.0 $RPM_BUILD_ROOT/%{_libdir}/grub/%{1}/		\
 %{expand:%%do_install_protected_file grub2-%{legacy_package_arch}} \
 cd ..								\
 %{nil}

grub2.spec

@@ -17,7 +17,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.06
-Release:	92%{?dist}
+Release:	93%{?dist}
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPLv3+
 URL:		http://www.gnu.org/software/grub/
@@ -544,6 +544,9 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
 %endif
 
 %changelog
+* Fri Mar 31 2023 Robbie Harwood <rharwood@redhat.com> - 2.06-93
+- Add legacy pxe core.0 (cmadams)
+
 * Thu Mar 30 2023 Robbie Harwood <rharwood@redhat.com> - 2.06-92
 - Disable the tpm verifier if the TPM device is not present