u-boot.git/drivers/tpm, branch v2022.10

tpm: Implement state command for Cr50

2022-09-03T13:59:05Z

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

tpm: Allow reporting the internal state

2022-09-03T13:59:05Z

It is useful to read information about the current TPM state, where supported, e.g. for debugging purposes when verified boot fails. Add support for this to the TPM interface as well as Cr50. Add a simple sandbox test. Signed-off-by: Simon Glass Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas

tpm: sandbox: Allow init of TPM in a different phase

2022-09-03T13:58:56Z

At present the emulator assumes that the TPM is inited in the same phase where it is used. But in fact SPL may init the TPM, so we don't want to complain when U-Boot proper later uses it. Remove this check. It might be best to save this information into the device state for the TPM, so that we can make sure the TPM was inited at some point. For now, this seems good enough. Signed-off-by: Simon Glass Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas

common: Drop display_options.h from common header

2022-08-10T17:46:55Z

Move this out of the common header and include it only where needed. Signed-off-by: Simon Glass

tpm: Add the RNG child device

2022-08-02T20:50:02Z

The TPM device comes with the random number generator(RNG) functionality which is built into the TPM device. Add logic to add the RNG child device in the TPM uclass post probe callback. The RNG device can then be used to pass a set of random bytes to the linux kernel, need for address space randomisation through the EFI_RNG_PROTOCOL interface. No compatible string is provided because this is not available in the binding defined by Linux. If multiple rand devices are in the system, then some method of selecting them (other than device tree) will need to be used, or a binding will need to be added. Signed-off-by: Sughosh Ganu Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas

tpm: add support for TPMv2.x I2C chips

2022-05-23T13:33:58Z

Add the tpm2_tis_i2c driver that should support any TPMv2 compliant I2C chips, such as the NPCT75X chip. [Ilias rename priv_auto_alloc_size to priv_auto] Signed-off-by: Eddie James Reviewed-by: Joel Stanley Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas

tpm: core: Set timeouts before requesting locality

2022-05-23T13:32:55Z

Requesting the locality uses the timeout values, so they need to be set beforehand. Signed-off-by: Eddie James Reviewed-by: Ilias Apalodimas Reviewed-by: Joel Stanley Signed-off-by: Ilias Apalodimas

vpl: Add Kconfig options for VPL

2022-05-02T13:58:13Z

Add VPL versions of commonly used Kconfig options. Signed-off-by: Simon Glass

doc: replace @return by Return:

2022-01-19T17:11:34Z

Sphinx expects Return: and not @return to indicate a return value. find . -name '*.c' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; find . -name '*.h' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; Signed-off-by: Heinrich Schuchardt

tis: fix tpm_tis_remove()

2021-11-30T12:11:05Z

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