Commit graph

126 commits

Author SHA1 Message Date
Simon Glass
414cc15144 treewide: Simply conditions with the new OF_REAL
Use this new Kconfig to simplify the compilation conditions where
appropriate.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-09-25 09:46:15 -06:00
Jorge Ramirez-Ortiz
cc5afabc9d drivers: tpm2: update reset gpio semantics
Use the more generic reset-gpios property name.

Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-09-24 14:36:50 -04:00
Simon Glass
1c6608bd92 sandbox: tpm: Support extending a PCR multiple times
It is fairly easy to handle this case and it makes the emulator more
useful, since PCRs are commonly extended several times.

Add support for this, using U-Boot's sha256 support.

For now sandbox only supports a single PCR, but that is enough for the
tests that currently exist.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
9f0b53564f sandbox: tpm: Correct handling of SANDBOX_TPM_PCR_NB
This is the number of PCRs, so the current check is off by one. Also the
map itself should not be checked, just the resulting pcr_index, to avoid
confusing people who read the code.

Fix these problems.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
a986216e34 sandbox: tpm: Support storing device state in tpm2
At present the tpm2 emulator does not support storing the device state.
Add this so we can handle the normal vboot flow through the sandbox
executables (VPL->SPL etc.) with the TPM contents staying in place.

Note: sandbox has not yet been converted to use livetree for the state
information, since livetree does not yet support writing to the tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
d8f105dd71 sandbox: tpm: Support nvdata in TPM2
Add support for this feature in the TPM2 emulator, to support Chromium OS
vboot.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
0c0ddada65 sandbox: tpm: Track whether the state is valid
Add checking as to whether the current TPM state is valid, so we can
implement reading/writing the state.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
46aed06cb7 sandbox: tpm: Finish comments for struct sandbox_tpm2
Tidy up the missing comments for this struct.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
7f350a959c sandbox: tpm: Correct handling of get-capability
This function current handles the kernel case incorrectly. Fix it, and
use the shorter TPM_HDR_LEN while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
f9143c1200 sandbox: tpm: Support the define-space command
Add support for this command, moving away from the previous approach of
hard-coding the initial data in the driver, now that the kernel-space data
has to be set up by the higher-level vboot code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
1db235a186 sandbox: tpm: Tidy up reading and writing of device state
At present this code assumes that the TPM data has been read but this may
not be the case. Refactor the code to use a separate pointer so we know
the current state of the data.

Add error checking for the data size.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
974c98f26c sandbox: tpm: Split out common nvdata code
We want to support nvdata in TPM2 as well. To avoid code duplicating the
associated code, move it into a common file.

Drop the special-case logic for the kernel space. This can be handled by
the higher-level code now, i.e. in vboot itself.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-01 09:05:24 -06:00
Simon Glass
bca2d579f4 tpm: cr50: Drop unnecessary coral headers
These headers are not actually used. Drop them so that this driver can
be used by other boards, e.g. coreboot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-07-15 19:49:56 +08:00
Simon Glass
e7c920a228 tpm: Correct warning on 32-bit build
Fix the warning:

drivers/tpm/tpm2_tis_sandbox.c: In function ‘sandbox_tpm2_xfer’:
drivers/tpm/tpm2_tis_sandbox.c:288:48: warning: format ‘%ld’ expects
	argument of type ‘long int’, but argument 2 has type ‘size_t’
	{aka ‘unsigned int’} [-Wformat=]
   printf("TPM2: Unmatching length, received: %ld, expected: %d\n",
                                              ~~^
                                              %d
          send_size, length);
          ~~~~~~~~~

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-03-13 13:14:52 -05:00
Simon Glass
d5cb6687c5 tpm: Use logging in the uclass
Update this to use log_debug() instead of the old debug().

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
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
Igor Opaniuk
2147a16983 dm: i2c: use CONFIG_IS_ENABLED macro for DM_I2C/DM_I2C_GPIO
Use CONFIG_IS_ENABLED() macro, which provides more convenient
way to check $(SPL)DM_I2C/$(SPL)DM_I2C_GPIO configs
for both SPL and U-Boot proper.

CONFIG_IS_ENABLED(DM_I2C) expands to:
- 1 if CONFIG_SPL_BUILD is undefined and CONFIG_DM_I2C is set to 'y',
- 1 if CONFIG_SPL_BUILD is defined and CONFIG_SPL_DM_I2C is set to 'y',
- 0 otherwise.

All occurences were replaced automatically using these bash cmds:
$ find . -type f -exec sed -i
     's/ifndef CONFIG_DM_I2C/if !CONFIG_IS_ENABLED(DM_I2C)/g' {} +
$ find . -type f -exec sed -i
    's/ifdef CONFIG_DM_I2C/if CONFIG_IS_ENABLED(DM_I2C)/g' {} +
$ find . -type f -exec sed -i
    's/defined(CONFIG_DM_I2C)/CONFIG_IS_ENABLED(DM_I2C)/g' {} +
$ find . -type f -exec sed -i
    's/ifndef CONFIG_DM_I2C_GPIO/if !CONFIG_IS_ENABLED(DM_I2C_GPIO)/g' {} +
$ find . -type f -exec sed -i
    's/ifdef CONFIG_DM_I2C_GPIO/if CONFIG_IS_ENABLED(DM_I2C_GPIO)/g' {} +
$ find . -type f -exec sed -i
    's/defined(CONFIG_DM_I2C_GPIO)/CONFIG_IS_ENABLED(DM_I2C_GPIO)/g' {} +

Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2021-02-21 06:08:00 +01:00
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
c69cda25c9 dm: treewide: Rename dev_get_platdata() to dev_get_plat()
Rename this to be consistent with the change from 'platdata'.

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
Michal Simek
d99f163792 tpm: spi: Cleanup source code
There is no need for GD to be used and priv variable is unused.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-11-20 10:42:54 +01:00
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
Walter Lozano
e3e2470fdd drivers: rename drivers to match compatible string
When using OF_PLATDATA, the bind process between devices and drivers
is performed trying to match compatible string with driver names.
However driver names are not strictly defined, and also there are different
names used when declaring a driver with U_BOOT_DRIVER, the name of the
symbol used in the linker list and the used in the struct driver_info.

In order to make things a bit more clear, rename the drivers names. This
will also help for further OF_PLATDATA improvements, such as checking
for valid driver names.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a fix for sandbox of-platdata to avoid using an invalid ANSI colour:
Signed-off-by: Simon Glass <sjg@chromium.org>
2020-07-09 18:57:22 -06:00
Johannes Holland
bedbb383e1 tpm: add #ifndef to fix redeclaration build errors
tpm_tis_spi.c directly includes tpm_tis.h and tpm-v2.h which both
define the same enums (see e.g. TPM_ACCESS_VALID). Add an #ifndef to
prevent redeclaration errors.

Signed-off-by: Johannes Holland <johannes.holland@infineon.com>
2020-07-08 17:21:46 -04:00
Bruno Thomsen
78cc3fcf08 tpm2: tis_spi: add linux compatible fallback string
This solves a compatibility issue with Linux device trees
that contain TPMv2.x hardware. So it's easier to import DTS
from upstream kernel when migrating board init from C code
to DTS.

The issue is that fallback binding is different between Linux
and u-Boot.

Linux: "tcg,tpm_tis-spi"
U-Boot: "tis,tpm2-spi"

As there are currently no in-tree users of the U-Boot binding,
it makes sense to use Linux fallback binding.

Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
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
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
88307654af tpm: Don't cleanup unless an error happens
At present the cleanup() method is called on every transfer. It should
only be called on failing transfers. Fix this and tidy up the error
handling a little.

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
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
Tom Rini
9a8942b53d sandbox conversion to SDL2
TPM TEE driver
 Various minor sandbox video enhancements
 New driver model core utility functions
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Merge tag 'dm-pull-6feb20' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm

sandbox conversion to SDL2
TPM TEE driver
Various minor sandbox video enhancements
New driver model core utility functions
2020-02-11 10:58:41 -05:00
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
Thirupathaiah Annapureddy
8d73be7a8e tpm2: ftpm: A driver for firmware TPM running inside TEE
Add a driver for a firmware TPM running inside TEE.

Documentation of the firmware TPM:
https://www.microsoft.com/en-us/research/publication/ftpm-software-implementation-tpm-chip/

Implementation of the firmware TPM:
https://github.com/Microsoft/ms-tpm-20-ref/tree/master/Samples/ARM32-FirmwareTPM

Signed-off-by: Thirupathaiah Annapureddy <thiruan@linux.microsoft.com>
2020-02-05 19:33:46 -07:00
Simon Glass
bcee8d6764 dm: gpio: Allow control of GPIO uclass in SPL
At present if CONFIG_SPL_GPIO_SUPPORT is enabled then the GPIO uclass
is included in SPL/TPL without any control for boards. Some boards may
want to disable this to reduce code size where GPIOs are not needed in
SPL or TPL.

Add a new Kconfig option to permit this. Default it to 'y' so that
existing boards work correctly.

Change existing uses of CONFIG_DM_GPIO to CONFIG_IS_ENABLED(DM_GPIO) to
preserve the current behaviour. Also update the 74x164 GPIO driver since
it cannot build with SPL.

This allows us to remove the hacks in config_uncmd_spl.h and
Makefile.uncmd_spl (eventually those files should be removed).

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 08:52:29 +08:00
Simon Glass
c3a4d1c3ee common: Drop linux/crc8.h
We have an existing U-Boot header for the one function that this defines.
Use that instead of the linux/ one. Move over the nice comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:23:07 -05:00
Kayla Theil
d8206ff198 tpm2: Don't assume active low reset value
The reset function sets the pin to 0 then 1 but if the pin is marked
ACTIVE_LOW in the DT it gets inverted and leaves the TPM in reset.
Let the gpio driver take care of the reset polarity.

Signed-off-by: Kayla Theil <kayla.theil@mixed-mode.de>
2019-10-15 08:40:02 -06:00
Roman Kapl
27eb177b39 tpm: wait for valid status
The TPM specification says that the EXPECT_DATA bit is not valid until
the VALID bit is set. Wait for that bit to be set. Fixes problems with
Ifineon SPI TPM.

Signed-off-by: Roman Kapl <rka@sysgo.com>
2019-07-11 14:11:18 -04:00
Simon Glass
51f00c1704 tpm: Export the open/close functions
At present these functions are not accessible outside the TPM library, but
in some cases we need to call them. Export them in the header file and add
a define for the SHA1 digest size.

Also adjust tpm_open() to call tpm_close() first so that the TPM is in a
known state before opening (e.g. by a previous phase of U-Boot).

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-11-29 09:30:06 -07:00
Simon Glass
04488c4d15 sandbox: tpm: Allow debugging of data packages
This is not normally useful, so change the code to avoid writing out every
data package. This can be enabled with #define DEBUG.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-11-20 19:14:22 -07:00
Simon Glass
c89d32a7b1 tpm: Use livetree and allow children
Adjust the TPM drivers to use livetree (only one does not). Also,
sometimes TPMs can have child devices if they provide a service to the
system (such as storing secure data), so permit that.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00
Simon Glass
6322a7b63f cros: Update cros_ec code to use struct udevice
At present we pass around a private pointer to specify the cros_ec device.
With driver model it makes more sense to pass the device. Update the code
to do this.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00
Simon Glass
6307896c17 tpm: Add support for SPL and TPL
At present the tpm can only be used in U-Boot proper. Updated it to work
in SPL and TPL also.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00
Simon Glass
ef8a25006d sandbox: tpm: Enhance to support the latest Chromium OS
This driver was originally written against Chromium OS circa 2012. A few
new features have been added. Enhance the TPM driver to match. This mostly
includes a few new messages and properly modelling whether a particular
'space' is present or not.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00