16fb9ac15SSimon Glassconfig CMD_CROS_EC 26fb9ac15SSimon Glass bool "Enable crosec command" 36fb9ac15SSimon Glass depends on CROS_EC 46fb9ac15SSimon Glass help 56fb9ac15SSimon Glass Enable command-line access to the Chrome OS EC (Embedded 66fb9ac15SSimon Glass Controller). This provides the 'crosec' command which has 76fb9ac15SSimon Glass a number of sub-commands for performing EC tasks such as 86fb9ac15SSimon Glass updating its flash, accessing a small saved context area 96fb9ac15SSimon Glass and talking to the I2C bus behind the EC (if there is one). 106fb9ac15SSimon Glass 116fb9ac15SSimon Glassconfig CROS_EC 126fb9ac15SSimon Glass bool "Enable Chrome OS EC" 136fb9ac15SSimon Glass help 146fb9ac15SSimon Glass Enable access to the Chrome OS EC. This is a separate 156fb9ac15SSimon Glass microcontroller typically available on a SPI bus on Chromebooks. It 166fb9ac15SSimon Glass provides access to the keyboard, some internal storage and may 176fb9ac15SSimon Glass control access to the battery and main PMIC depending on the 186fb9ac15SSimon Glass device. You can use the 'crosec' command to access it. 196fb9ac15SSimon Glass 206fb9ac15SSimon Glassconfig CROS_EC_I2C 216fb9ac15SSimon Glass bool "Enable Chrome OS EC I2C driver" 226fb9ac15SSimon Glass depends on CROS_EC 236fb9ac15SSimon Glass help 246fb9ac15SSimon Glass Enable I2C access to the Chrome OS EC. This is used on older 256fb9ac15SSimon Glass ARM Chromebooks such as snow and spring before the standard bus 266fb9ac15SSimon Glass changed to SPI. The EC will accept commands across the I2C using 276fb9ac15SSimon Glass a special message protocol, and provide responses. 286fb9ac15SSimon Glass 296fb9ac15SSimon Glassconfig CROS_EC_LPC 306fb9ac15SSimon Glass bool "Enable Chrome OS EC LPC driver" 316fb9ac15SSimon Glass depends on CROS_EC 326fb9ac15SSimon Glass help 336fb9ac15SSimon Glass Enable I2C access to the Chrome OS EC. This is used on x86 346fb9ac15SSimon Glass Chromebooks such as link and falco. The keyboard is provided 356fb9ac15SSimon Glass through a legacy port interface, so on x86 machines the main 366fb9ac15SSimon Glass function of the EC is power and thermal management. 376fb9ac15SSimon Glass 386fb9ac15SSimon Glassconfig CROS_EC_SPI 396fb9ac15SSimon Glass bool "Enable Chrome OS EC SPI driver" 406fb9ac15SSimon Glass depends on CROS_EC 416fb9ac15SSimon Glass help 426fb9ac15SSimon Glass Enable SPI access to the Chrome OS EC. This is used on newer 436fb9ac15SSimon Glass ARM Chromebooks such as pit, pi and nyan-big. The SPI interface 446fb9ac15SSimon Glass provides a faster and more robust interface than I2C but the bugs 456fb9ac15SSimon Glass are less interesting. 466fb9ac15SSimon Glass 47f94a1bedSSimon Glassconfig DM_CROS_EC 48f94a1bedSSimon Glass bool "Enable Driver Model for Chrome OS EC" 49f94a1bedSSimon Glass depends on DM 50f94a1bedSSimon Glass help 51f94a1bedSSimon Glass Enable driver model for the Chrome OS EC interface. This 52f94a1bedSSimon Glass allows the cros_ec SPI driver to operate with CONFIG_DM_SPI 53f94a1bedSSimon Glass but otherwise makes few changes. Since cros_ec also supports 546fb9ac15SSimon Glass LPC (which doesn't support driver model yet), a full 55f94a1bedSSimon Glass conversion is not yet possible. 56*fe78378dSgaurav rana 57*fe78378dSgaurav ranaconfig CONFIG_FSL_SEC_MON 58*fe78378dSgaurav rana bool "Enable FSL SEC_MON Driver" 59*fe78378dSgaurav rana help 60*fe78378dSgaurav rana Freescale Security Monitor block is responsible for monitoring 61*fe78378dSgaurav rana system states. 62*fe78378dSgaurav rana Security Monitor can be transitioned on any security failures, 63*fe78378dSgaurav rana like software violations or hardware security violations. 64