Merge pull request #4 from wirenboard/feature/43446-wb7-cpu-serial-fr…

…om-devmem WB7 cpu serial from devmem
wirenboard · Dec 26, 2021 · 401a1ba · 401a1ba
2 parents 6b53ee2 + 4cd8cdb
commit 401a1ba
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Showing 4 changed files with 23 additions and 2 deletions.
diff --git a/Jenkinsfile b/Jenkinsfile
@@ -0,0 +1 @@
+buildDebArchAll()
diff --git a/debian/changelog b/debian/changelog
@@ -1,3 +1,9 @@
+wb-common (1.4.0) stable; urgency=medium
+
+  * add procedure to read WB7 serial from /dev/mem
+
+ -- Nikita Maslov <nikita.maslov@wirenboard.ru>  Tue, 07 Dec 2021 16:16:43 +0300
+
 wb-common (1.3.3) stable; urgency=medium
 
   * beeper: fix stucking in beeping state

diff --git a/debian/control b/debian/control
@@ -10,10 +10,10 @@ X-Python3-Version: >= 3.2
 
 Package: python-wb-common
 Architecture: all
-Depends: python, ${misc:Depends}, python-six
+Depends: python, ${misc:Depends}, python-six, busybox
 Description: Wiren Board Python common library and helpers
 
 Package: python3-wb-common
 Architecture: all
-Depends: python3, ${misc:Depends}, python3-six
+Depends: python3, ${misc:Depends}, python3-six, busybox
 Description: Wiren Board Python common library and helpers
diff --git a/wb_common/uid.py b/wb_common/uid.py
@@ -1,6 +1,7 @@
 from __future__ import print_function
 import re
 import os
+import subprocess
 
 # get_mac() has been moved to test_suite, because it uses wb-gen-serial,
 # which depends on this (wb-common) package (avoid circular dependency)
@@ -14,6 +15,19 @@ def get_cpuinfo_serial():
     return None
 
 
+def _devmem(address):
+    r = subprocess.check_output('busybox devmem 0x{:x} 32'.format(address), shell=True)
+    return int(r, 16)
+
+
+def get_wb7_cpu_serial():
+    r3 = _devmem(0x1c1b20c)
+    r2 = _devmem(0x1c1b208)
+    r1 = _devmem(0x1c1b204)
+
+    return format(r3, '08x') + format(r2, '08x') + format((r1 >> 16) & 0xFFFF, '04x')
+
+
 def get_mmc_serial():
     mmc_prefix = '/sys/class/mmc_host/mmc0/'
     if os.path.exists(mmc_prefix):