tests/vm: do not pollute configure with --efi-aarch64

Just make EFI_AARCH64 a variable in the makefile that defaults to the efi
firmware included with QEMU.  It can be redefined on the "make" command
line.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

configure

@@ -418,7 +418,6 @@ prefix="/usr/local"
 mandir="\${prefix}/share/man"
 datadir="\${prefix}/share"
 firmwarepath="\${prefix}/share/qemu-firmware"
-efi_aarch64=""
 qemu_docdir="\${prefix}/share/doc/qemu"
 bindir="\${prefix}/bin"
 libdir="\${prefix}/lib"
@@ -1109,8 +1108,6 @@ for opt do
   ;;
   --firmwarepath=*) firmwarepath="$optarg"
   ;;
-  --efi-aarch64=*) efi_aarch64="$optarg"
-  ;;
   --host=*|--build=*|\
   --disable-dependency-tracking|\
   --sbindir=*|--sharedstatedir=*|\
@@ -3650,20 +3647,6 @@ EOF
   fi
 fi
 
-############################################
-# efi-aarch64 probe
-# Check for efi files needed by aarch64 VMs.
-# By default we will use the efi included with QEMU.
-# Allow user to override the path for efi also.
-if ! test -f "$efi_aarch64"; then
-  if test -f $source_path/pc-bios/edk2-aarch64-code.fd.bz2; then
-    # valid after build
-    efi_aarch64=$PWD/pc-bios/edk2-aarch64-code.fd
-  else
-    efi_aarch64=""
-  fi
-fi
-
 ##########################################
 # libcap-ng library probe
 if test "$cap_ng" != "no" ; then
@@ -6861,7 +6844,6 @@ if test "$docs" != "no"; then
     echo "sphinx-build      $sphinx_build"
 fi
 echo "genisoimage       $genisoimage"
-echo "efi_aarch64       $efi_aarch64"
 echo "python_yaml       $python_yaml"
 echo "slirp support     $slirp $(echo_version $slirp $slirp_version)"
 if test "$slirp" != "no" ; then
@@ -7963,7 +7945,6 @@ echo "PYTHON=$python" >> $config_host_mak
 echo "SPHINX_BUILD=$sphinx_build" >> $config_host_mak
 echo "SPHINX_WERROR=$sphinx_werror" >> $config_host_mak
 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
-echo "EFI_AARCH64=$efi_aarch64" >> $config_host_mak
 echo "PYTHON_YAML=$python_yaml" >> $config_host_mak
 echo "CC=$cc" >> $config_host_mak
 if $iasl -h > /dev/null 2>&1; then

tests/vm/Makefile.include

@@ -2,6 +2,8 @@
 
 .PHONY: vm-build-all vm-clean-all
 
+EFI_AARCH64 = $(wildcard $(BUILD_DIR)/pc-bios/edk2-aarch64-code.fd)
+
 IMAGES := freebsd netbsd openbsd centos fedora
 ifneq ($(GENISOIMAGE),)
 IMAGES += ubuntu.i386 centos