common: add --qemu option to override configs

Author: cirosantilli

build

@@ -84,7 +84,7 @@ buildroot_component = Component(
 name_to_component_map = {
     # Leaves without dependencies.
     'baremetal-qemu': Component(
-        lambda arch: run_cmd(['build-baremetal'], arch),
+        lambda arch: run_cmd(['build-baremetal', '--qemu'], arch),
         supported_archs=common.crosstool_ng_supported_archs,
     ),
     'baremetal-gem5': Component(

build-baremetal

@@ -22,7 +22,7 @@ class BaremetalComponent(common.Component):
         else:
             os.environ['PATH'] = common.crosstool_ng_bin_dir + os.environ['PATH']
             gcc = common.get_toolchain_tool('gcc', allowed_toolchains=['crosstool-ng'])
-        if args.gem5:
+        if common.emulator == 'gem5':
             if common.machine == 'VExpress_GEM5_V1':
                 entry_address = 0x80000000
                 uart_address = 0x1c090000

build-buildroot

@@ -71,7 +71,7 @@ usually extra Buildroot targets.
         extra_make_args = common.add_newlines(args.extra_make_args)
         if args.build_linux:
             extra_make_args.extend(['linux-reconfigure', common.Newline])
-        if args.gem5:
+        if common.emulator == 'gem5':
             extra_make_args.extend(['gem5-reconfigure', common.Newline])
         if args.arch == 'x86_64':
             defconfig = 'qemu_x86_64_defconfig'