linux-toradex.git/include/linux/tpm.h, branch v4.11-rc3

tpm: Factor out common startup code

2016-07-19T14:43:38+00:00

The TCG standard startup sequence (get timeouts, tpm startup, etc) for
TPM and TPM2 chips is being open coded in many drivers, move it into
the core code.

tpm_tis and tpm_crb are used as the basis for the core code
implementation and the easy drivers are converted. In the process
several small drivers bugs relating to error handling this flow
are fixed.

For now the flag TPM_OPS_AUTO_STARTUP is optional to allow a staged
driver roll out, but ultimately all drivers should use this flow and
the flag removed. Some drivers still do not implement the startup
sequence at all and will need to be tested with it enabled.

Signed-off-by: Jason Gunthorpe 
Tested-by: Andrew Zamansky 
Reviewed-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen

tpm: seal/unseal for TPM 2.0

2015-10-18T23:01:21+00:00

Added tpm_trusted_seal() and tpm_trusted_unseal() API for sealing
trusted keys.

This patch implements basic sealing and unsealing functionality for
TPM 2.0:

* Seal with a parent key using a 20 byte auth value.
* Unseal with a parent key using a 20 byte auth value.

Signed-off-by: Jarkko Sakkinen 
Signed-off-by: Peter Huewe

tpm: Provide a generic means to override the chip returned timeouts

2014-07-29T21:10:56+00:00

Some Atmel TPMs provide completely wrong timeouts from their
TPM_CAP_PROP_TIS_TIMEOUT query. This patch detects that and returns
new correct values via a DID/VID table in the TIS driver.

Tested on ARM using an AT97SC3204T FW version 37.16

Cc: 
[PHuewe: without this fix these 'broken' Atmel TPMs won't function on
older kernels]
Signed-off-by: "Berg, Christopher" 
Signed-off-by: Jason Gunthorpe 

Signed-off-by: Peter Huewe

tpm: Create a tpm_class_ops structure and use it in the drivers

2014-01-06T13:37:25+00:00

This replaces the static initialization of a tpm_vendor_specific
structure in the drivers with the standard Linux idiom of providing
a const structure of function pointers.

Signed-off-by: Jason Gunthorpe 
Reviewed-by: Joel Schopp 
Reviewed-by: Ashley Lai 
[phuewe: did apply manually due to commit
191ffc6bde3 tpm/tpm_i2c_atmel: fix coccinelle warnings]
Signed-off-by: Peter Huewe

tpm: move TPM_DIGEST_SIZE defintion

2013-05-21T17:25:02+00:00

IMA requires access to TPM_DIGEST_SIZE definition.  This patch
moves the definition to .

Signed-off-by: Mimi Zohar 
Signed-off-by: Kent Yoder

tpm: Move tpm_get_random api into the TPM device driver

2012-08-22T16:11:33+00:00

Move the tpm_get_random api from the trusted keys code into the TPM
device driver itself so that other callers can make use of it. Also,
change the api slightly so that the number of bytes read is returned in
the call, since the TPM command can potentially return fewer bytes than
requested.

Acked-by: David Safford 
Reviewed-by: H. Peter Anvin 
Signed-off-by: Kent Yoder

key: add tpm_send command

2010-11-28T21:55:22+00:00

Add internal kernel tpm_send() command used to seal/unseal keys.

Changelog:
- replaced module_put in tpm_send() with new tpm_chip_put() wrapper
  (suggested by David Howells)
- Make tpm_send() cmd argument a 'void *' (suggested by David Howells)

Signed-off-by: David Safford 
Signed-off-by: Mimi Zohar 
Acked-by: David Howells 
Acked-by: Serge E. Hallyn 
Signed-off-by: James Morris

tpm: fix header for modular build

2009-10-29T00:17:40+00:00

Fix build for TCG_TPM=m.  Header file doesn't handle this
and incorrectly builds stubs.

drivers/char/tpm/tpm.c:720: error: redefinition of 'tpm_pcr_read'
include/linux/tpm.h:35: error:previous definition of 'tpm_pcr_read' was here
drivers/char/tpm/tpm.c:752: error: redefinition of 'tpm_pcr_extend'
include/linux/tpm.h:38: error:previous definition of 'tpm_pcr_extend' was here

Repairs linux-next's

commit d6ba452128178091dab7a04d54f7e66fdc32fb39
Author: Mimi Zohar 
Date:   Mon Oct 26 09:26:18 2009 -0400

    tpm add default function definitions

Signed-off-by: Randy Dunlap 
Cc: Rajiv Andrade 
Cc: Mimi Zohar 
Cc: James Morris 
Cc: Eric Paris 
Signed-off-by: Andrew Morton 
Signed-off-by: James Morris

tpm add default function definitions

2009-10-27T22:22:17+00:00

Add default tpm_pcr_read/extend function definitions required
by IMA/Kconfig changes.

Signed-off-by: Mimi Zohar 
Reviewed-by: Eric Paris 
Signed-off-by: James Morris

TPM: integrity interface

2009-02-03T00:23:12+00:00

This patch adds internal kernel support for:
 - reading/extending a pcr value
 - looking up the tpm_chip for a given chip number

Signed-off-by: Rajiv Andrade 
Signed-off-by: Mimi Zohar 
Signed-off-by: James Morris