1 What: /sys/class/tpm/tpmX/ppi/
2 Date: August 2012
3 KernelVersion: 3.6
4 Contact: xiaoyan.zhang@intel.com
5 Description:
6 This folder includes the attri
7 Presence Interface). Only if T
8 folder makes sense. The folder
9 'find /sys/ -name 'pcrs''. For
10 please refer to the PPI specif
11
12 http://www.trustedcomputinggro
13
14 In Linux 4.2 ppi was moved to
15 A symlink from tpmX/device/ppi
16 compatibility.
17
18 What: /sys/class/tpm/tpmX/ppi/versio
19 Date: August 2012
20 Contact: xiaoyan.zhang@intel.com
21 Description:
22 This attribute shows the versi
23 platform.
24 This file is readonly.
25
26 What: /sys/class/tpm/tpmX/ppi/reques
27 Date: August 2012
28 Contact: xiaoyan.zhang@intel.com
29 Description:
30 This attribute shows the reque
31 executed in the pre-OS environ
32 the OS to the pre-OS environme
33 integer value range from 1 to
34 This file can be read and writ
35
36 What: /sys/class/tpm/tpmX/ppi/respon
37 Date: August 2012
38 Contact: xiaoyan.zhang@intel.com
39 Description:
40 This attribute shows the respo
41 request it acted upon. The for
42 : <response description>".
43 This file is readonly.
44
45 What: /sys/class/tpm/tpmX/ppi/transi
46 Date: August 2012
47 Contact: xiaoyan.zhang@intel.com
48 Description:
49 This attribute shows the platf
50 take place in order to transit
51 a requested operation. The for
52 description>".
53 This file is readonly.
54
55 What: /sys/class/tpm/tpmX/ppi/tcg_op
56 Date: August 2012
57 Contact: xiaoyan.zhang@intel.com
58 Description:
59 This attribute shows whether i
60 operation to be executed in th
61 for the requests defined by TC
62 The format is "<request> <stat
63 This attribute is only support
64 This file is readonly.
65
66 What: /sys/class/tpm/tpmX/ppi/vs_ope
67 Date: August 2012
68 Contact: xiaoyan.zhang@intel.com
69 Description:
70 This attribute shows whether i
71 operation to be executed in th
72 for the verdor specific reques
73 255. The format is same with t
74 is also only supported by PPI
75 This file is readonly.
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