1# 2# TPM subsystem configuration 3# 4 5menu "TPM support" 6 7config DM_TPM 8 bool "Enable driver model for Trusted Platform Module drivers" 9 depends on DM && TPM 10 help 11 Enable driver model for TPMs. The TIS interface (tis_open(), 12 tis_sendrecv(), etc.) is then implemented by the TPM uclass. Note 13 that even with driver model only a single TPM is currently 14 supported, since the tpm library assumes this. 15 16config TPM_TIS_SANDBOX 17 bool "Enable sandbox TPM driver" 18 depends on SANDBOX 19 help 20 This driver emulates a TPM, providing access to base functions 21 such as reading and writing TPM private data. This is enough to 22 support Chrome OS verified boot. Extend functionality is not 23 implemented. 24 25config TPM_ATMEL_TWI 26 bool "Enable Atmel TWI TPM device driver" 27 depends on TPM 28 help 29 This driver supports an Atmel TPM device connected on the I2C bus. 30 The usual tpm operations and the 'tpm' command can be used to talk 31 to the device using the standard TPM Interface Specification (TIS) 32 protocol 33 34config TPM_TIS_I2C 35 bool "Enable support for Infineon SLB9635/45 TPMs on I2C" 36 depends on TPM && DM_I2C 37 help 38 This driver supports Infineon TPM devices connected on the I2C bus. 39 The usual tpm operations and the 'tpm' command can be used to talk 40 to the device using the standard TPM Interface Specification (TIS) 41 protocol 42 43config TPM_TIS_I2C_BURST_LIMITATION 44 bool "Enable I2C burst length limitation" 45 depends on TPM_TIS_I2C 46 help 47 Some broken TPMs have a limitation on the number of bytes they can 48 receive in one message. Enable this option to allow you to set this 49 option. The can allow a broken TPM to be used by splitting messages 50 into separate pieces. 51 52config TPM_TIS_I2C_BURST_LIMITATION_LEN 53 int "Length" 54 depends on TPM_TIS_I2C_BURST_LIMITATION 55 help 56 Use this to set the burst limitation length 57 58config TPM_TIS_LPC 59 bool "Enable support for Infineon SLB9635/45 TPMs on LPC" 60 depends on TPM && X86 61 help 62 This driver supports Infineon TPM devices connected on the I2C bus. 63 The usual tpm operations and the 'tpm' command can be used to talk 64 to the device using the standard TPM Interface Specification (TIS) 65 protocol 66 67config TPM_AUTH_SESSIONS 68 bool "Enable TPM authentication session support" 69 depends on TPM 70 help 71 Enable support for authorised (AUTH1) commands as specified in the 72 TCG Main Specification 1.2. OIAP-authorised versions of the commands 73 TPM_LoadKey2 and TPM_GetPubKey are provided. Both features are 74 available using the 'tpm' command, too. 75 76endmenu 77