u-boot.git/include/tpm.h, branch master

tpm: disociate TPMv1.x specific and generic code

2018-05-26T00:12:55+00:00

There are no changes in this commit but a new organization of the code
as follow.

* cmd/ directory:
        > move existing code from cmd/tpm.c in cmd/tpm-common.c
	> move specific code in cmd/tpm-v1.c
	> create a specific header file with generic definitions for
	  commands only called cmd/tpm-user-utils.h

* lib/ directory:
        > move existing code from lib/tpm.c in lib/tpm-common.c
	> move specific code in lib/tpm-v1.c
	> create a specific header file with generic definitions for
	  the library itself called lib/tpm-utils.h

* include/ directory:
        > move existing code from include/tpm.h in include/tpm-common.h
	> move specific code in include/tpm-v1.h

Code designated as 'common' is compiled if TPM are used. Code designated
as 'specific' is compiled only if the right specification has been
selected.

All files include tpm-common.h.
Files in cmd/ include tpm-user-utils.h.
Files in lib/ include tpm-utils.h.
Depending on the specification, files may include either (not both)
tpm-v1.h or tpm-v2.h.

Signed-off-by: Miquel Raynal 
Reviewed-by: Tom Rini 
[trini: Fix a few more cases of tpm.h -> tpm-v1.h, some Kconfig logic]
Signed-off-by: Tom Rini

tpm: fix spelling

2018-05-25T12:12:40+00:00

Fix following checkpatch.pl issues in TPM-related code:

    CHECK: '' may be misspelled - perhaps ''?

Signed-off-by: Miquel Raynal 
Reviewed-by: Tom Rini 
Reviewed-by: Simon Glass

tpm: use the BIT() macro where applicable

2018-05-25T12:12:40+00:00

Fix following checkpatch.pl issue in TPM-related code:

    CHECK: Prefer using the BIT macro

Signed-off-by: Miquel Raynal 
Reviewed-by: Tom Rini 
Reviewed-by: Simon Glass

tpm: substitute deprecated uint_t types with their u equivalent

2018-05-25T12:12:40+00:00

Fix following checkpatch.pl issues in TPM-related code:

    CHECK: Prefer kernel type 'u8' over 'uint8_t'
    CHECK: Prefer kernel type 'u16' over 'uint16_t'
    CHECK: Prefer kernel type 'u32' over 'uint32_t'

Signed-off-by: Miquel Raynal 
Reviewed-by: Tom Rini 
Reviewed-by: Simon Glass

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

tpm: add more useful NV storage permission flags

2017-11-17T14:15:52+00:00

TPM_NV_PER_PPREAD: physical presence needed for reading
TPM_NV_PER_WRITEDEFINE: persistent write lock by writing size 0
TPM_NV_PER_WRITEALL: write in one go

Signed-off-by: André Draszik 
Acked-by: Simon Glass

tpm: add tpm_get_random()

2017-11-17T14:15:40+00:00

Add a function to obtain random data from the TPM.

Signed-off-by: André Draszik 
Added commit message, add cast to min()
Signed-off-by: Simon Glass 
Acked-by: Simon Glass

tpm: Add function to load keys via their parent's SHA1 hash

2017-03-26T19:22:58+00:00

If we want to load a key into a TPM, we need to know the designated parent
key's handle, so that the TPM is able to insert the key at the correct place in
the key hierarchy.

However, if we want to load a key whose designated parent key we also
previously loaded ourselves, we first need to memorize this parent key's handle
(since the handles for the key are chosen at random when they are inserted into
the TPM). If we are, however, unable to do so, for example if the parent key is
loaded into the TPM during production, and its child key during the actual
boot, we must find a different mechanism to identify the parent key.

To solve this problem, we add a function that allows U-Boot to load a key into
the TPM using their designated parent key's SHA1 hash, and the corresponding
auth data.

Signed-off-by: Mario Six 
Reviewed-by: Simon Glass

lib: tpm: Add command to flush resources

2017-02-01T08:02:57+00:00

This patch adds a function to the TPM library, which allows U-Boot to
flush resources, e.g. keys, from the TPM.

Signed-off-by: Mario Six 
Reviewed-by: Stefan Roese 
Reviewed-by: Simon Glass 
Signed-off-by: Stefan Roese

dm: tpm: Remove every compilation switch for TPM driver model

2015-10-23T15:42:28+00:00

As every TPM drivers support UCLASS_TPM, we can only rely on DM_TPM
functions.

This simplify a bit the code.

Signed-off-by: Christophe Ricard 
Reviewed-by: Tom Rini 
Acked-by: Simon Glass