test/py/tests/test_avb.py

   1 # Copyright (c) 2018, Linaro Limited
   2 #
   3 # SPDX-License-Identifier:  GPL-2.0+
   4 #
   5 # Android Verified Boot 2.0 Test
   6
   7 """
   8 This tests Android Verified Boot 2.0 support in U-boot:
   9
  10 For additional details about how to build proper vbmeta partition
  11 check doc/android/avb2.txt
  12
  13 For configuration verification:
  14 - Corrupt boot partition and check for failure
  15 - Corrupt vbmeta partition and check for failure
  16 """
  17
  18 import pytest
  19 import u_boot_utils as util
  20
  21 # defauld mmc id
  22 mmc_dev = 1
  23 temp_addr = 0x90000000
  24 temp_addr2 = 0x90002000
  25
  26 @pytest.mark.buildconfigspec('cmd_avb', 'cmd_mmc')
  27 def test_avb_verify(u_boot_console):
  28     """Run AVB 2.0 boot verification chain with avb subset of commands
  29     """
  30
  31     success_str = "Verification passed successfully"
  32
  33     response = u_boot_console.run_command('avb init %s' %str(mmc_dev))
  34     assert response == ''
  35     response = u_boot_console.run_command('avb verify')
  36     assert response.find(success_str)
  37
  38
  39 @pytest.mark.buildconfigspec('cmd_avb', 'cmd_mmc')
  40 def test_avb_mmc_uuid(u_boot_console):
  41     """Check if 'avb get_uuid' works, compare results with
  42     'part list mmc 1' output
  43     """
  44
  45     response = u_boot_console.run_command('avb init %s' % str(mmc_dev))
  46     assert response == ''
  47
  48     response = u_boot_console.run_command('mmc rescan; mmc dev %s' %
  49                                           str(mmc_dev))
  50     assert response.find('is current device')
  51
  52     part_lines = u_boot_console.run_command('mmc part').splitlines()
  53     part_list = {}
  54     cur_partname = ''
  55
  56     for line in part_lines:
  57         if '"' in line:
  58             start_pt = line.find('"')
  59             end_pt = line.find('"', start_pt + 1)
  60             cur_partname = line[start_pt + 1: end_pt]
  61
  62         if 'guid:' in line:
  63             guid_to_check = line.split('guid:\t')
  64             part_list[cur_partname] = guid_to_check[1]
  65
  66     # lets check all guids with avb get_guid
  67     for part, guid in part_list.iteritems():
  68         avb_guid_resp = u_boot_console.run_command('avb get_uuid %s' % part)
  69         assert guid == avb_guid_resp.split('UUID: ')[1]
  70
  71
  72 @pytest.mark.buildconfigspec('cmd_avb')
  73 def test_avb_read_rb(u_boot_console):
  74     """Test reading rollback indexes
  75     """
  76
  77     response = u_boot_console.run_command('avb init %s' % str(mmc_dev))
  78     assert response == ''
  79
  80     response = u_boot_console.run_command('avb read_rb 1')
  81     assert response == 'Rollback index: 0'
  82
  83
  84 @pytest.mark.buildconfigspec('cmd_avb')
  85 def test_avb_is_unlocked(u_boot_console):
  86     """Test if device is in the unlocked state
  87     """
  88
  89     response = u_boot_console.run_command('avb init %s' % str(mmc_dev))
  90     assert response == ''
  91
  92     response = u_boot_console.run_command('avb is_unlocked')
  93     assert response == 'Unlocked = 1'
  94
  95
  96 @pytest.mark.buildconfigspec('cmd_avb', 'cmd_mmc')
  97 def test_avb_mmc_read(u_boot_console):
  98     """Test mmc read operation
  99     """
 100
 101     response = u_boot_console.run_command('mmc rescan; mmc dev %s 0' %
 102                                           str(mmc_dev))
 103     assert response.find('is current device')
 104
 105     response = u_boot_console.run_command('mmc read 0x%x 0x100 0x1' % temp_addr)
 106     assert response.find('read: OK')
 107
 108     response = u_boot_console.run_command('avb init %s' % str(mmc_dev))
 109     assert response == ''
 110
 111     response = u_boot_console.run_command('avb read_part xloader 0 100 0x%x' %
 112                                            temp_addr2)
 113     assert response.find('Read 512 bytes')
 114
 115     # Now lets compare two buffers
 116     response = u_boot_console.run_command('cmp 0x%x 0x%x 40' %
 117                                           (temp_addr, temp_addr2))
 118     assert response.find('64 word')
 119
 120
 121 @pytest.mark.buildconfigspec('cmd_avb')
 122 @pytest.mark.buildconfigspec('optee_ta_avb')
 123 def test_avb_persistent_values(u_boot_console):
 124     """Test reading/writing persistent storage to avb
 125     """
 126
 127     response = u_boot_console.run_command('avb init %s' % str(mmc_dev))
 128     assert response == ''
 129
 130     response = u_boot_console.run_command('avb write_pvalue test value_value')
 131     assert response == 'Wrote 12 bytes'
 132
 133     response = u_boot_console.run_command('avb read_pvalue test 12')
 134     assert response == 'Read 12 bytes, value = value_value'