systemd: support systemd-boot as a stand-alone EFI bootloader

The "systemd-boot" is gummiboot now included into systemd project.
The old gummiboot project supported in OE is dead.

Our intention is to get a gummiboot-like EFI bootloader without
much dependency on systemd and its features.

This work is largely derived from the existing bbclass and recipes
of gummiboot and systemd.
(commit tip: ee25d0e3987d7732a2e46e1640693b4cf419a9fc)

Please refer to the history up to the tip for authorship and
credit information for the original works.

To enable the systemd-boot in build, add this line
EFI_PROVIDER = "systemd-boot" in your machine conf file.

Signed-off-by: Jianxun Zhang <jianxun.zhang@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/meta/recipes-bsp/systemd-boot/systemd-boot.bb b/meta/recipes-bsp/systemd-boot/systemd-boot.bb
new file mode 100644
index 0000000000..87e98718f5
--- /dev/null
+++ b/meta/recipes-bsp/systemd-boot/systemd-boot.bb
@@ -0,0 +1,35 @@
+require recipes-core/systemd/systemd.inc
+
+DEPENDS = "intltool-native libcap util-linux gnu-efi"
+
+inherit autotools pkgconfig gettext
+inherit deploy
+
+EXTRA_OECONF = " --enable-gnuefi \
+                 --with-efi-includedir=${STAGING_INCDIR} \
+                 --with-efi-ldsdir=${STAGING_LIBDIR} \
+                 --with-efi-libdir=${STAGING_LIBDIR} \
+                 --disable-manpages \
+               "
+
+# Imported from gummiboot recipe
+TUNE_CCARGS_remove = "-mfpmath=sse"
+
+do_compile() {
+	SYSTEMD_BOOT_EFI_ARCH="ia32"
+	if [ "${TARGET_ARCH}" = "x86_64" ]; then
+		SYSTEMD_BOOT_EFI_ARCH="x64"
+	fi
+
+	oe_runmake systemd-boot${SYSTEMD_BOOT_EFI_ARCH}.efi
+}
+
+do_install() {
+	# Bypass systemd installation with a NOP
+	:
+}
+
+do_deploy () {
+	install ${B}/systemd-boot*.efi ${DEPLOYDIR}
+}
+addtask deploy before do_build after do_compile