u-boot.git/drivers/tpm, branch v2022.01

tis: fix tpm_tis_remove()

2021-11-30T12:11:05+00:00

tpm_tis_remove() leads to calling tpm_tis_ready() with the IO region
unmapped and chip->locality == -1 (locality released). This leads to a
crash in mmio_write_bytes().

The patch implements these changes:

tpm_tis_remove(): Unmap the IO region after calling tpm_tis_cleanup().

tpm_tis_cleanup(): Request locality before IO output and releasing
locality.

Signed-off-by: Heinrich Schuchardt 
Reviewed-by: Ilias Apalodimas 
Signed-off-by: Ilias Apalodimas

drivers: tpm: atmel_twi: fix printf specifier compile warning

2021-11-17T11:47:36+00:00

%d was being used as the specifier for size_t, leading to a
compiler warning

Signed-off-by: Mathew McBride 
Reviewed-by: Ilias Apalodimas 
Signed-off-by: Ilias Apalodimas

drivers: tpm: atmel_twi: implement get_desc operation

2021-11-17T11:47:33+00:00

Without get_desc, the tpm command will not provide a
description of the device in 'tpm device' or 'tpm info'.

Due to the characteristics of the Atmel TPM it isn't
possible to determine certain attributes (e.g open/close
status) without using the TPM stack (compare Infineon
and ST TPM drivers), so just print out the chip model
and udevice name as the identifier.

Signed-off-by: Mathew McBride 
Signed-off-by: Ilias Apalodimas

drivers: tpm: atmel_twi: do not use an offset byte

2021-11-17T11:47:31+00:00

This driver was broken due to an empty offset byte being prepended
at the start of every transmission.

The hardware does not mimic an EEPROM device with registers so
an offset byte is not required.

Signed-off-by: Mathew McBride 
Acked-by: Ilias Apalodimas 
Signed-off-by: Ilias Apalodimas

drivers: tpm: atmel_twi: drop non-DM_I2C compatibility

2021-11-17T11:47:29+00:00

There are no users of this driver without DM_I2C

Signed-off-by: Mathew McBride 
Reviewed-by: Ilias Apalodimas 
Signed-off-by: Ilias Apalodimas

tpm: Use the new API on tpm2 spi driver

2021-11-10T19:57:54+00:00

Convert our SPI TPM driver and use the newly added API

Reviewed-by: Simon Glass 
Signed-off-by: Ilias Apalodimas

tpm2: Add a TPMv2 MMIO TIS driver

2021-11-10T19:57:54+00:00

Add support for devices that expose a TPMv2 though MMIO.
Apart from those devices, we can use the driver in our QEMU setups and
test TPM related code which is difficult to achieve using the sandbox
driver (e.g test the EFI TCG2 protocol).

It's worth noting that a previous patch added TPMv2 TIS core functions,
which the current driver is consuming.

Reviewed-by: Simon Glass 
Signed-off-by: Ilias Apalodimas

tpm2: Introduce TIS tpm core

2021-11-10T19:57:54+00:00

There's a lot of code duplication in U-Boot right now.  All the TPM TIS
compatible drivers we have at the moment have their own copy of a TIS
implementation.

So let's create a common layer which implements the core TIS functions.
Any driver added from now own, which is compatible with the TIS spec, will
only have to provide the underlying bus communication mechanisms.

Signed-off-by: Ilias Apalodimas

tpm: refactor function names for LPC based TPMs

2021-11-10T19:57:54+00:00

With the upcoming TPM2 API, some of the functions name are part of the new
header file.  So switch conflicting internal function names and defines.

Reviewed-by: Simon Glass 
Reviewed-by: Heinrich Schuchardt 
Signed-off-by: Ilias Apalodimas

tpm: refactor function names and macros for infineon v1.2 TPM

2021-11-10T19:57:54+00:00

With the upcoming TPM2 API, some of the functions name are part of the new
header file.  So switch conflicting internal function names and defines.

Reviewed-by: Simon Glass 
Signed-off-by: Ilias Apalodimas