[U-Boot] [PATCH v2 3/3] tests: py: dfu: Provide functionality to set test and dummy files alt settings

[Lukasz Majewski]

After concatenation of "dfu_alt_info" variable from "dfu_alt_boot" and
"dfu_alt_system" it may happen that test and dummy files alt settings
are different than default 0 and 1.

This patch provides the ability to set different values for them.

Signed-off-by: Lukasz Majewski <l.majewski at samsung.com>
---
Changes for v2:
- generate "alt_info" automatically
- use file names as alt settings instead of numerical values
- Extend in-code documentation
---
 test/py/tests/test_dfu.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/test/py/tests/test_dfu.py b/test/py/tests/test_dfu.py
index 2ed38ad0..f2830db 100644
--- a/test/py/tests/test_dfu.py
+++ b/test/py/tests/test_dfu.py
@@ -30,6 +30,13 @@ env__usb_dev_ports = (
     },
 )
 
+# Optional entries (required only when "alt_id_test_file" and
+# "alt_id_dummy_file" are specified).
+test_file_name = "/dfu_test.bin"
+dummy_file_name = "/dfu_dummy.bin"
+# Above files are used to generate proper "alt_info" entry
+"alt_info": "/%s ext4 0 2;/%s ext4 0 2" % (test_file_name, dummy_file_name),
+
 env__dfu_configs = (
     # eMMC, partition 1
     {
@@ -52,6 +59,16 @@ env__dfu_configs = (
         # $dfu_alt_info, each time the dfu command is run, by concatenating
         # $dfu_alt_boot and $dfu_alt_system.
         "alt_info_env_name": "dfu_alt_system",
+        # This value is optional.
+        # For boards which require the "test file" alt setting number other than
+        # default (0) it is possible to specify exact file name to be used as
+        # this parameter.
+        "alt_id_test_file": test_file_name,
+        # This value is optional.
+        # For boards which require the "dummy file" alt setting number other
+        # than default (1) it is possible to specify exact file name to be used
+        # as this parameter.
+        "alt_id_dummy_file": dummy_file_name,
     },
 )
 
@@ -122,6 +139,8 @@ def test_dfu(u_boot_console, env__usb_dev_port, env__dfu_config):
         Returns:
             Nothing.
         """
+        global alt_setting_test_file
+        global alt_setting_dummy_file
 
         fh = u_boot_utils.attempt_to_open_file(
             env__usb_dev_port['host_usb_dev_node'])
@@ -132,6 +151,9 @@ def test_dfu(u_boot_console, env__usb_dev_port, env__dfu_config):
         u_boot_console.log.action(
             'Starting long-running U-Boot dfu shell command')
 
+        alt_setting_test_file = env__dfu_config.get('alt_id_test_file', '0')
+        alt_setting_dummy_file = env__dfu_config.get('alt_id_dummy_file', '1')
+
         dfu_alt_info_env = env__dfu_config.get('alt_info_env_name', \
 	                                               'dfu_alt_info')
 
-- 
2.0.0.rc2