diff options
| author | Karthikeyan Ramasubramanian <kramasub@chromium.org> | 2020-08-20 22:53:00 -0600 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2020-08-22 00:30:57 +0000 |
| commit | 7b58f9413db21b0fc71e65a99e43f699e83ea0f9 (patch) | |
| tree | c6728e1a419bab0c1bc65622f6b096bcab14f182 | |
| parent | 4cc87d4e35899519be8bf28ffecf89f01eacc55c (diff) | |
drivers/spi/tpm: Add helper to get cr50 firmware version
Introduce a helper to get the cached cr50 firmware version. This
information is in turn used to identify the strap configuration
supported by Cr50.
BUG=None
TEST=Ensure that Drawcia board boots to OS. Ensure that the version
cached cr50 firmware version is returned.
Change-Id: Id84b152993f253878a6c133cc433a0da2c990cf2
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44653
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/drivers/spi/tpm/tpm.c | 10 | ||||
| -rw-r--r-- | src/drivers/spi/tpm/tpm.h | 10 |
2 files changed, 15 insertions, 5 deletions
diff --git a/src/drivers/spi/tpm/tpm.c b/src/drivers/spi/tpm/tpm.c index bc40e852a2..66db671b50 100644 --- a/src/drivers/spi/tpm/tpm.c +++ b/src/drivers/spi/tpm/tpm.c @@ -48,11 +48,6 @@ static struct spi_slave spi_slave; /* Cached TPM device identification. */ static struct tpm2_info tpm_info; -struct cr50_firmware_version { - int epoch; - int major; - int minor; -}; static struct cr50_firmware_version cr50_firmware_version; /* @@ -849,3 +844,8 @@ size_t tpm2_process_command(const void *tpm2_command, size_t command_size, return payload_size; } + +void cr50_get_firmware_version(struct cr50_firmware_version *version) +{ + memcpy(version, &cr50_firmware_version, sizeof(*version)); +} diff --git a/src/drivers/spi/tpm/tpm.h b/src/drivers/spi/tpm/tpm.h index b3e3f45ee9..39d54e74b3 100644 --- a/src/drivers/spi/tpm/tpm.h +++ b/src/drivers/spi/tpm/tpm.h @@ -16,6 +16,13 @@ struct tpm2_info { uint16_t revision; }; +/* Structure describing the elements of Cr50 firmware version. */ +struct cr50_firmware_version { + int epoch; + int major; + int minor; +}; + /* * Initialize a TPM2 device: read its id, claim locality of zero, verify that * this indeed is a TPM2 device. Use the passed in handle to access the right @@ -44,4 +51,7 @@ void tpm2_get_info(struct tpm2_info *info); /* Indicates whether Cr50 ready pulses are guaranteed to be at least 100us. */ bool cr50_is_long_interrupt_pulse_enabled(void); +/* Get the cr50 firmware version information. */ +void cr50_get_firmware_version(struct cr50_firmware_version *version); + #endif /* ! __COREBOOT_SRC_DRIVERS_SPI_TPM_TPM_H */ |