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 38*47cb8c65SSimon Glassconfig CROS_EC_SANDBOX 39*47cb8c65SSimon Glass bool "Enable Chrome OS EC sandbox driver" 40*47cb8c65SSimon Glass depends on CROS_EC && SANDBOX 41*47cb8c65SSimon Glass help 42*47cb8c65SSimon Glass Enable a sandbox emulation of the Chrome OS EC. This supports 43*47cb8c65SSimon Glass keyboard (use the -l flag to enable the LCD), verified boot context, 44*47cb8c65SSimon Glass EC flash read/write/erase support and a few other things. It is 45*47cb8c65SSimon Glass enough to perform a Chrome OS verified boot on sandbox. 46*47cb8c65SSimon Glass 476fb9ac15SSimon Glassconfig CROS_EC_SPI 486fb9ac15SSimon Glass bool "Enable Chrome OS EC SPI driver" 496fb9ac15SSimon Glass depends on CROS_EC 506fb9ac15SSimon Glass help 516fb9ac15SSimon Glass Enable SPI access to the Chrome OS EC. This is used on newer 526fb9ac15SSimon Glass ARM Chromebooks such as pit, pi and nyan-big. The SPI interface 536fb9ac15SSimon Glass provides a faster and more robust interface than I2C but the bugs 546fb9ac15SSimon Glass are less interesting. 556fb9ac15SSimon Glass 56fe78378dSgaurav ranaconfig CONFIG_FSL_SEC_MON 57fe78378dSgaurav rana bool "Enable FSL SEC_MON Driver" 58fe78378dSgaurav rana help 59fe78378dSgaurav rana Freescale Security Monitor block is responsible for monitoring 60fe78378dSgaurav rana system states. 61fe78378dSgaurav rana Security Monitor can be transitioned on any security failures, 62fe78378dSgaurav rana like software violations or hardware security violations. 63