1*a7d660bcSSimon Glass# 2*a7d660bcSSimon Glass# TPM subsystem configuration 3*a7d660bcSSimon Glass# 4*a7d660bcSSimon Glass 5*a7d660bcSSimon Glassmenu "TPM support" 6*a7d660bcSSimon Glass 7527a0727SSimon Glassconfig TPM_TIS_SANDBOX 8527a0727SSimon Glass bool "Enable sandbox TPM driver" 9*a7d660bcSSimon Glass depends on SANDBOX 10527a0727SSimon Glass help 11527a0727SSimon Glass This driver emulates a TPM, providing access to base functions 12527a0727SSimon Glass such as reading and writing TPM private data. This is enough to 13527a0727SSimon Glass support Chrome OS verified boot. Extend functionality is not 14527a0727SSimon Glass implemented. 15*a7d660bcSSimon Glass 16*a7d660bcSSimon Glassconfig TPM_ATMEL_TWI 17*a7d660bcSSimon Glass bool "Enable Atmel TWI TPM device driver" 18*a7d660bcSSimon Glass depends on TPM 19*a7d660bcSSimon Glass help 20*a7d660bcSSimon Glass This driver supports an Atmel TPM device connected on the I2C bus. 21*a7d660bcSSimon Glass The usual tpm operations and the 'tpm' command can be used to talk 22*a7d660bcSSimon Glass to the device using the standard TPM Interface Specification (TIS) 23*a7d660bcSSimon Glass protocol 24*a7d660bcSSimon Glass 25*a7d660bcSSimon Glassconfig TPM_TIS_I2C 26*a7d660bcSSimon Glass bool "Enable support for Infineon SLB9635/45 TPMs on I2C" 27*a7d660bcSSimon Glass depends on TPM && DM_I2C 28*a7d660bcSSimon Glass help 29*a7d660bcSSimon Glass This driver supports Infineon TPM devices connected on the I2C bus. 30*a7d660bcSSimon Glass The usual tpm operations and the 'tpm' command can be used to talk 31*a7d660bcSSimon Glass to the device using the standard TPM Interface Specification (TIS) 32*a7d660bcSSimon Glass protocol 33*a7d660bcSSimon Glass 34*a7d660bcSSimon Glassconfig TPM_TIS_I2C_BURST_LIMITATION 35*a7d660bcSSimon Glass bool "Enable I2C burst length limitation" 36*a7d660bcSSimon Glass depends on TPM_TIS_I2C 37*a7d660bcSSimon Glass help 38*a7d660bcSSimon Glass Some broken TPMs have a limitation on the number of bytes they can 39*a7d660bcSSimon Glass receive in one message. Enable this option to allow you to set this 40*a7d660bcSSimon Glass option. The can allow a broken TPM to be used by splitting messages 41*a7d660bcSSimon Glass into separate pieces. 42*a7d660bcSSimon Glass 43*a7d660bcSSimon Glassconfig TPM_TIS_I2C_BURST_LIMITATION_LEN 44*a7d660bcSSimon Glass int "Length" 45*a7d660bcSSimon Glass depends on TPM_TIS_I2C_BURST_LIMITATION 46*a7d660bcSSimon Glass help 47*a7d660bcSSimon Glass Use this to set the burst limitation length 48*a7d660bcSSimon Glass 49*a7d660bcSSimon Glassconfig TPM_TIS_LPC 50*a7d660bcSSimon Glass bool "Enable support for Infineon SLB9635/45 TPMs on LPC" 51*a7d660bcSSimon Glass depends on TPM && X86 52*a7d660bcSSimon Glass help 53*a7d660bcSSimon Glass This driver supports Infineon TPM devices connected on the I2C bus. 54*a7d660bcSSimon Glass The usual tpm operations and the 'tpm' command can be used to talk 55*a7d660bcSSimon Glass to the device using the standard TPM Interface Specification (TIS) 56*a7d660bcSSimon Glass protocol 57*a7d660bcSSimon Glass 58*a7d660bcSSimon Glassconfig TPM_AUTH_SESSIONS 59*a7d660bcSSimon Glass bool "Enable TPM authentication session support" 60*a7d660bcSSimon Glass depends on TPM 61*a7d660bcSSimon Glass help 62*a7d660bcSSimon Glass Enable support for authorised (AUTH1) commands as specified in the 63*a7d660bcSSimon Glass TCG Main Specification 1.2. OIAP-authorised versions of the commands 64*a7d660bcSSimon Glass TPM_LoadKey2 and TPM_GetPubKey are provided. Both features are 65*a7d660bcSSimon Glass available using the 'tpm' command, too. 66*a7d660bcSSimon Glass 67*a7d660bcSSimon Glassendmenu 68