scripts: Create a common settings file for QEMU scripts

Move the settings into a common file so they can be used by all tools.

Signed-off-by: Simon Glass <sjg@chromium.org>

scripts/build-efi

@@ -16,7 +16,6 @@ Use ~/.build-efi to configure the various paths used by this script.
 """
 
 from argparse import ArgumentParser
-import configparser
 import os
 import shutil
 
@@ -63,55 +62,15 @@ def parse_args():
     return args
 
 
-def get_settings():
-    """Get settings from the settings file
-
-    Return:
-        ConfigParser containing settings
-    """
-    settings = configparser.ConfigParser()
-    fname = f'{os.getenv("HOME")}/.build-efi'
-    if not os.path.exists(fname):
-        print('No config file found ~/.build-efi\nCreating one...\n')
-        tools.write_file(fname, '''[build-efi]
-# Mount path for the temporary image
-mount_point = /mnt/test-efi
-
-# Image-output filename
-image_file = try.img
-
-# Set ubdir to the build directory where you build U-Boot out-of-tree
-# We avoid in-tree build because it gets confusing trying different builds
-build_dir = /tmp/b
-
-# Build the kernel with: make O=/tmp/kernel
-bzimage = /tmp/kernel/arch/x86/boot/bzImage
-
-# Place where OVMF-pure-efi.i386.fd etc. are kept
-efi_dir = .
-''', binary=False)
-    settings.read(fname)
-    return settings
-
-
 class BuildEfi:
     """Class to collect together the various bits of state while running"""
-    def __init__(self, settings, args):
+    def __init__(self, args):
         self.helper = Helper()
-        self.settings = settings
-        self.img = self.get_setting('image_file', 'try.img')
-        self.build_dir = self.get_setting("build_dir", '/tmp')
+        self.helper.read_settings()
+        self.img = self.helper.get_setting('efi_image_file', 'efi.img')
+        self.build_dir = self.helper.get_setting("build_dir", '/tmp')
         self.args = args
 
-    def get_setting(self, name, fallback=None):
-        """Get a setting by name
-
-        Args:
-            name (str): Name of setting to retrieve
-            fallback (str or None): Value to return if the setting is missing
-        """
-        return self.settings.get('build-efi', name, fallback=fallback)
-
     def run_qemu(self, bitness, serial_only):
         """Run QEMU
 
@@ -120,7 +79,7 @@ class BuildEfi:
             serial_only (bool): True to run without a display
         """
         extra = []
-        efi_dir = self.get_setting("efi_dir")
+        efi_dir = self.helper.get_setting('efi_dir')
         if self.args.arm:
             qemu_arch = 'aarch64'
             extra += ['--machine', 'virt', '-cpu', 'max']
@@ -210,5 +169,5 @@ class BuildEfi:
 
 
 if __name__ == "__main__":
-    efi = BuildEfi(get_settings(), parse_args())
+    efi = BuildEfi(parse_args())
     efi.start()