Makefile: add boot_gfx target

[wipawel]

This can be used to boot KTF under QEMU with display.

[sktt]

Shouldn't default be nogfx? Alternatively, could we also have boot_debug use nogfx too?

[minipli-oss]

I agree with #286 (review), nogfx should still be the default, so the change should be something along the lines (completely untested!):

diff --git a/Makefile b/Makefile
index 318a04e44a7c..ba034d3eb359 100644
--- a/Makefile
+++ b/Makefile
@@ -254,9 +254,11 @@ ifeq ($(HAVE_KVM), kvm)
 QEMU_PARAMS += -enable-kvm
 endif # HAVE_KVM
 QEMU_PARAMS += -m 128
-QEMU_PARAMS += -display none -vga none -vnc none
 QEMU_PARAMS += -serial stdio
 QEMU_PARAMS += -smp cpus=2
+QEMU_PARAMS_NOGFX := -display none -vga none -vnc none
+QEMU_PARAMS += $(QEMU_PARAMS_NOGFX)
+QEMU_PARAMS_GFX := $(subst $(QEMU_PARAMS_NOGFX),,$(QEMU_PARAMS))
 
 QEMU_PARAMS_KERNEL := -append "param1 param2 param3"
 QEMU_PARAMS_DEBUG := -s &
@@ -281,6 +283,11 @@ boot: $(ISO_FILE)
        @echo "QEMU START"
        $(VERBOSE) $(QEMU_BIN) -cdrom $(ISO_FILE) $(QEMU_PARAMS)
 
+.PHONY: boot_gfx
+boot_gfx: $(ISO_FILE)
+       @echo "QEMU START"
+       $(VERBOSE) $(QEMU_BIN) -cdrom $(ISO_FILE) $(QEMU_PARAMS_GFX)
+
 .PHONY: boot_debug
 boot_debug: $(ISO_FILE)
        $(QEMU_BIN) -cdrom $(ISO_FILE) $(QEMU_PARAMS) $(QEMU_PARAMS_DEBUG)

[wipawel]

Shouldn't default be nogfx? Alternatively, could we also have boot_debug use nogfx too?

Ok, I fixed it as you suggested with the code minipli proposed.