Commit graph

15 commits

Author SHA1 Message Date
Simon Glass
13ad993fc7 tpm: Don't include cr50 in TPL/SPL
At present the security chip is not used in these U-Boot phases. Update
the Makefile to exclude it.

Fix a few logging statements while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-03-02 15:53:37 -05:00
Simon Glass
3039fc7e96 tpm: cr50: Rename driver to work with of-platdata
Update the driver name to match the compatible string, so it can work
with of-platdata.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-01-30 14:25:41 -07:00
Simon Glass
5372fc772e tpm: cr50: Add a better description and more debug
Update the TPM description to include the interrupt mechanicm since this
is useful to know. Also add a warning if the TPM cannot be found and a
debug line if it succeeds.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-01-30 14:25:41 -07:00
Simon Glass
6208975e23 tpm: cr50: Check for valid locality
When the Cr50 starts up it doesn't have a valid locality. The driver sets
it to -1 to indicate that. Tracking this allows cr50_i2c_cleanup() to
avoid releasing a locality that was not claimed.

However the helper functions that generate the flags use a u8 type which
cannot support -1, so they return a locality of 0xff.

Fix this by updating the type. With this, 'tpm startup TPM2_SU_CLEAR'
works as expected.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-01-30 14:25:41 -07:00
Simon Glass
d1998a9fde dm: treewide: Rename ofdata_to_platdata() to of_to_plat()
This name is far too long. Rename it to remove the 'data' bits. This makes
it consistent with the platdata->plat rename.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 16:51:09 -07:00
Simon Glass
caa4daa2ae dm: treewide: Rename 'platdata' variables to just 'plat'
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 16:51:08 -07:00
Simon Glass
41575d8e4c dm: treewide: Rename auto_alloc_size members to be shorter
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.

Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 08:00:25 -07:00
Simon Glass
39565cc2a9 tpm: cr50: Correct logging statements
Fix up some logging statements in this file. Most of them should use
log_debug(), apart from one error.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-10-22 09:54:52 -04:00
Simon Glass
eaac971736 tpm: cr50: Add ACPI support
Generate ACPI information for this device so that Linux can use it
correctly.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-09-25 11:27:21 +08:00
Simon Glass
c05ed00afb common: Drop linux/delay.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
f7ae49fc4f common: Drop log.h from common header
Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:18 -04:00
Simon Glass
32e8ee004a tpm: cr50: Use the correct GPIO binding
This device should use ready-gpios rather than ready-gpio. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-04-16 14:36:28 +08:00
Simon Glass
fe6831dac4 tpm: cr50: Add a comment for cr50_priv
Add a comment for the private structure

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-04-16 14:36:28 +08:00
Simon Glass
79b7ade5b5 tpm: cr50: Release locality on exit
At present the cr50 driver claims the locality and does not release it for
Linux. This causes problems. Fix this by tracking what is claimed, and
adding a 'remove' method.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-04-16 14:36:28 +08:00
Simon Glass
d36856a385 tpm: Add a driver for H1/Cr50
H1 is a Google security chip present in recent Chromebooks, Pixel phones
and other devices. Cr50 is the name of the software that runs on H1 in
Chromebooks.

This chip is used to handle TPM-like functionality and also has quite a
few additional features.

Add a driver for this.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-07 22:46:35 +08:00