[kvm-unit-tests PATCH 1/2] x86: Build ISO images from x86/*.elf

[Yi Sun <yi.sun@xxxxxxxxx>]

Make use of tool grub-mkresure to wrap x86/*.elf in ISO images.
VMM could load test cases just like a CD-ROM, which could
extend usage of those cases.

Refine Makefile to clean *.iso when running 'make clean'.

Signed-off-by: Yi Sun <yi.sun@xxxxxxxxx>

diff --git a/lib/grub/grub.cfg b/lib/grub/grub.cfg
new file mode 100644
index 0000000..b287cf4
--- /dev/null
+++ b/lib/grub/grub.cfg
@@ -0,0 +1,7 @@
+set timeout=0
+set default=0
+
+menuentry "my os" {
+    multiboot /boot/kernel.bin
+    boot
+}
diff --git a/x86/Makefile.common b/x86/Makefile.common
index 52bb7aa..62eea51 100644
--- a/x86/Makefile.common
+++ b/x86/Makefile.common
@@ -50,6 +50,22 @@ FLATLIBS = lib/libcflat.a
 	$(OBJCOPY) -O elf32-i386 $^ $@
 	@chmod a-x $@
 
+grub_cfg := lib/grub/grub.cfg
+
+elf_files := $(wildcard ./x86/*.elf)
+iso_files := $(patsubst %.elf,%.iso,$(elf_files))
+
+%.iso: %.elf
+	@echo "Creating ISO for case: $(notdir $<)"
+	@rm -rf build/isofiles
+	@mkdir -p build/isofiles/boot/grub
+	@cp $< build/isofiles/boot/kernel.bin
+	@cp $(grub_cfg) build/isofiles/boot/grub
+	@grub-mkrescue -o $@ build/isofiles 2> /dev/null
+
+iso: $(iso_files)
+	echo "All ISO created successfully!"
+
 tests-common = $(TEST_DIR)/vmexit.flat $(TEST_DIR)/tsc.flat \
                $(TEST_DIR)/smptest.flat  \
                $(TEST_DIR)/realmode.flat $(TEST_DIR)/msr.flat \
@@ -81,5 +97,5 @@ $(TEST_DIR)/hyperv_stimer.elf: $(TEST_DIR)/hyperv.o
 $(TEST_DIR)/hyperv_connections.elf: $(TEST_DIR)/hyperv.o
 
 arch_clean:
-	$(RM) $(TEST_DIR)/*.o $(TEST_DIR)/*.flat $(TEST_DIR)/*.elf \
+	$(RM) $(TEST_DIR)/*.o $(TEST_DIR)/*.flat $(TEST_DIR)/*.elf $(TEST_DIR)/*.iso \
 	$(TEST_DIR)/.*.d lib/x86/.*.d \
-- 
2.27.0