summaryrefslogtreecommitdiff
path: root/test
diff options
context:
space:
mode:
Diffstat (limited to 'test')
-rw-r--r--test/py/u_boot_utils.py23
1 files changed, 23 insertions, 0 deletions
diff --git a/test/py/u_boot_utils.py b/test/py/u_boot_utils.py
index 64584494e4..de9ee2643f 100644
--- a/test/py/u_boot_utils.py
+++ b/test/py/u_boot_utils.py
@@ -11,6 +11,7 @@ import os.path
import pytest
import sys
import time
+import re
def md5sum_data(data):
"""Calculate the MD5 hash of some data.
@@ -310,3 +311,25 @@ def persistent_file_helper(u_boot_log, filename):
"""
return PersistentFileHelperCtxMgr(u_boot_log, filename)
+
+def crc32(u_boot_console, address, count):
+ """Helper function used to compute the CRC32 value of a section of RAM.
+
+ Args:
+ u_boot_console: A U-Boot console connection.
+ address: Address where data starts.
+ count: Amount of data to use for calculation.
+
+ Returns:
+ CRC32 value
+ """
+
+ bcfg = u_boot_console.config.buildconfig
+ has_cmd_crc32 = bcfg.get('config_cmd_crc32', 'n') == 'y'
+ assert has_cmd_crc32, 'Cannot compute crc32 without CONFIG_CMD_CRC32.'
+ output = u_boot_console.run_command('crc32 %08x %x' % (address, count))
+
+ m = re.search('==> ([0-9a-fA-F]{8})$', output)
+ assert m, 'CRC32 operation failed.'
+
+ return m.group(1)