[PATCH v3 1/2] binman: cosmetic: code formatting fixes

[Brian Ruley]

Conform to the style guide used in the project by making the following
changes:
* Use single quotes for multiline strings (except docstrings)
* Fix line width to 79 cols
* Use f-string instead of formatting a regular string

Signed-off-by: Brian Ruley <brian.ruley at gehealthcare.com>
---
 tools/binman/etype/nxp_imx8mcst.py | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/tools/binman/etype/nxp_imx8mcst.py b/tools/binman/etype/nxp_imx8mcst.py
index 8221517b0c..0c744a00d7 100644
--- a/tools/binman/etype/nxp_imx8mcst.py
+++ b/tools/binman/etype/nxp_imx8mcst.py
@@ -23,7 +23,7 @@ from u_boot_pylib import tools
 MAGIC_NXP_IMX_IVT = 0x412000d1
 MAGIC_FITIMAGE    = 0xedfe0dd0
 
-csf_config_template = """
+csf_config_template = '''
 [Header]
   Version = 4.3
   Hash Algorithm = sha256
@@ -53,7 +53,7 @@ csf_config_template = """
 [Authenticate Data]
   Verification index = 2
   Blocks = 0x1234 0x78 0xabcd "data.bin"
-"""
+'''
 
 class Entry_nxp_imx8mcst(Entry_mkimage):
     """NXP i.MX8M CST .cfg file generator and cst invoker
@@ -69,9 +69,21 @@ class Entry_nxp_imx8mcst(Entry_mkimage):
     def ReadNode(self):
         super().ReadNode()
         self.loader_address = fdt_util.GetInt(self._node, 'nxp,loader-address')
-        self.srk_table = os.getenv('SRK_TABLE', fdt_util.GetString(self._node, 'nxp,srk-table', 'SRK_1_2_3_4_table.bin'))
-        self.csf_crt = os.getenv('CSF_KEY', fdt_util.GetString(self._node, 'nxp,csf-crt', 'CSF1_1_sha256_4096_65537_v3_usr_crt.pem'))
-        self.img_crt = os.getenv('IMG_KEY', fdt_util.GetString(self._node, 'nxp,img-crt', 'IMG1_1_sha256_4096_65537_v3_usr_crt.pem'))
+        self.srk_table = os.getenv(
+            'SRK_TABLE', fdt_util.GetString(
+                            self._node, 'nxp,srk-table',
+                            'SRK_1_2_3_4_table.bin'
+                         ))
+        self.csf_crt = os.getenv(
+            'CSF_KEY', fdt_util.GetString(
+                           self._node, 'nxp,csf-crt',
+                           'CSF1_1_sha256_4096_65537_v3_usr_crt.pem'
+                       ))
+        self.img_crt = os.getenv(
+            'IMG_KEY', fdt_util.GetString(
+                           self._node, 'nxp,img-crt',
+                           'IMG1_1_sha256_4096_65537_v3_usr_crt.pem'
+                       ))
         self.unlock = fdt_util.GetBool(self._node, 'nxp,unlock')
         self.ReadEntries()
 
@@ -118,7 +130,7 @@ class Entry_nxp_imx8mcst(Entry_mkimage):
         tools.write_file(output_dname, data)
 
         # Generate CST configuration file used to sign payload
-        cfg_fname = tools.get_output_filename('nxp.csf-config-txt.%s' % uniq)
+        cfg_fname = tools.get_output_filename(f'nxp.csf-config-txt.{uniq}')
         config = configparser.ConfigParser()
         # Do not make key names lowercase
         config.optionxform = str
@@ -127,7 +139,9 @@ class Entry_nxp_imx8mcst(Entry_mkimage):
         config['Install SRK']['File'] = '"' + self.srk_table + '"'
         config['Install CSFK']['File'] = '"' + self.csf_crt + '"'
         config['Install Key']['File'] = '"' + self.img_crt + '"'
-        config['Authenticate Data']['Blocks'] = hex(signbase) + ' 0 ' + hex(len(data)) + ' "' + str(output_dname) + '"'
+        config['Authenticate Data']['Blocks'] = (hex(signbase) + ' 0 '
+                                                 + hex(len(data)) + ' "'
+                                                 + str(output_dname) + '"')
         if not self.unlock:
             config.remove_section('Unlock')
         with open(cfg_fname, 'w') as cfgf:
-- 
2.39.5