Commit graph

26 commits

Author SHA1 Message Date
Simon Glass
5208ed187c tpm: Allow committing non-volatile data
Add an option to tell the TPM to commit non-volatile data immediately it
is changed, rather than waiting until later. This is needed in some
situations, since if the device reboots it may not write the data.

Add definitions for the rest of the Cr50 commands while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-09-03 16:59:05 +03:00
Simon Glass
4c57ec76b7 tpm: Implement state command for Cr50
Add a vendor-specific TPM2 command for this and implement it for Cr50.
Note: This is not part of the TPM spec, but is a Cr50 extension.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-09-03 16:59:05 +03:00
Simon Glass
1c32eee38b tpm: Correct the define-space command in TPMv2
The message format is incorrect. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-09-03 16:54:04 +03:00
Simon Glass
a557d258c6 tpm: Require a digest source when extending the PCR
This feature is used for measured boot, so we can add a log entry to the
TCPA with some information about where the digest comes from. It is not
currently supported in the TPM drivers, but add it to the API so that
code which expects it can signal its request.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-09-03 16:53:58 +03:00
Ruchika Gupta
2957a1e224 tpm: use more algorithms than sha256 on pcr_read
The current tpm2_pcr_read is hardcoded using SHA256. Make the
actual command to TPM configurable to use wider range of algorithms.
The current command line is kept as is i.e limited to SHA-256 only.

Signed-off-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-11-30 09:23:49 +01:00
Masahisa Kojima
7fc93cae49 efi_loader: add EFI_TCG2_PROTOCOL.SubmitCommand
This commit adds the EFI_TCG2_PROTOCOL.SubmitCommand
required in the TCG PC Client PFP spec.
SubmitCommand enables to send the raw command to the TPM device.

To implement this api, tpm2_submit_command() is added
into tpm-v2.c.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-11-07 18:36:55 +01:00
Simon Glass
63af92e837 tpm: Allow disabling platform hierarchy with TPM2
With TPM2 we don't actually lock the TPM once verified boot is finished.
Instead we disable the platform hierarchy which serves the same purpose.
Add an implementation of this so we can safely boot into the kernel.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-03-02 15:53:37 -05:00
Simon Glass
7785bc1d5f tpm: Add TPM2 support for write_lock
Implement this API function for TPM2.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-03-02 15:53:37 -05:00
Simon Glass
6719cbe31a tpm: Add TPM2 support for read/write values
Implement this API function for TPM2.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-03-02 15:53:37 -05:00
Simon Glass
eadcbc7896 tpm: Add an implementation of define_space
Add support for this so that the TPM can be set up for use with
Chromium OS verified boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-03-02 15:53:37 -05:00
Simon Glass
1bea7cc430 tpm: Reduce duplication in a few functions
Update tpm2_clear() and tpm2_pcr_extend() so that the command size
is not repeated twice. Add a small comment to the latter.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-03-02 15:53:37 -05:00
Ilias Apalodimas
e926136bb2 tpm: use more than sha256 on pcr_extend
The current tpm2_pcr_extend is hardcoded using SHA256.
Let's make the actual command to the TPM2 configurable so we can support
a wider range of algorithms and keep the current command line as-is i.e
limited to SHA256 only

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-12-03 21:22:40 +01:00
Ilias Apalodimas
a322f54f50 tpm: Change response length of tpm2_get_capability()
For implementing the EFI_TCG2_PROTOCOL we need the count field returned by
the TPM when reading capabilities via tpm2_get_capability().

Adjust the implementation of the 'tpm2 get_capability' command accordingly.

Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-11-09 17:28:18 +01:00
Dhananjay Phadke
06bea49809 tpm: add TPM2_GetRandom command support
Add support for TPM2 GetRandom command

Signed-off-by: Dhananjay Phadke <dphadke@linux.microsoft.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-07-08 15:38:32 -04:00
Simon Glass
cd93d625fd common: Drop linux/bitops.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
abdc7b8a2d tpm: Convert to use a device parameter
At present many TPM calls assume there is only one TPM in the system and
look up this TPM themselves. This is inconsistent with driver model, which
expects all driver methods to have a device parameter. Update the code to
correct this.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-11-29 09:30:06 -07:00
Miquel Raynal
b9dd4fabbe tpm: add PCR authentication commands support
Add support for the TPM2_PCR_SetAuthPolicy and
TPM2_PCR_SetAuthValue commands.

Change the command file and the help accordingly.

Note: These commands could not be tested because the TPMs available
do not support them, however they could be useful for someone else.
The user is warned by the command help.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:59 -04:00
Miquel Raynal
dc26e913a8 tpm: add TPM2_HierarchyChangeAuth command support
Add support for the TPM2_HierarchyChangeAuth command.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:58 -04:00
Miquel Raynal
da9c3392e6 tpm: add dictionary attack mitigation commands support
Add support for the TPM2_DictionaryAttackParameters and
TPM2_DictionaryAttackLockReset commands.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:58 -04:00
Miquel Raynal
69cd8f0681 tpm: add TPM2_GetCapability command support
Add support for the TPM2_GetCapability command.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:58 -04:00
Miquel Raynal
1c4ea8f496 tpm: add TPM2_PCR_Read command support
Add support for the TPM2_PCR_Read command.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:58 -04:00
Miquel Raynal
6284be5a90 tpm: add TPM2_PCR_Extend command support
Add support for the TPM2_PCR_Extend command.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:57 -04:00
Miquel Raynal
bad8ff569d tpm: add TPM2_Clear command support
Add support for the TPM2_Clear command.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:57 -04:00
Miquel Raynal
2dc6d97e1e tpm: add TPM2_SelfTest command support
Add support for the TPM2_Selftest command.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:57 -04:00
Miquel Raynal
1922df2010 tpm: add TPM2_Startup command support
Add support for the TPM2_Startup command.

Change the command file and the help accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:57 -04:00
Miquel Raynal
ff32245bb3 tpm: prepare support for TPMv2.x commands
Choice between v1 and v2 compliant functions is done with the
configuration.

Create the various files that will receive TPMv2-only code on the same
scheme as for the TPMv1 code.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-25 20:12:55 -04:00