| config CMD_CROS_EC | |
| bool "Enable crosec command" | |
| depends on CROS_EC | |
| help | |
| Enable command-line access to the Chrome OS EC (Embedded | |
| Controller). This provides the 'crosec' command which has | |
| a number of sub-commands for performing EC tasks such as | |
| updating its flash, accessing a small saved context area | |
| and talking to the I2C bus behind the EC (if there is one). | |
| config CROS_EC | |
| bool "Enable Chrome OS EC" | |
| help | |
| Enable access to the Chrome OS EC. This is a separate | |
| microcontroller typically available on a SPI bus on Chromebooks. It | |
| provides access to the keyboard, some internal storage and may | |
| control access to the battery and main PMIC depending on the | |
| device. You can use the 'crosec' command to access it. | |
| config CROS_EC_I2C | |
| bool "Enable Chrome OS EC I2C driver" | |
| depends on CROS_EC | |
| help | |
| Enable I2C access to the Chrome OS EC. This is used on older | |
| ARM Chromebooks such as snow and spring before the standard bus | |
| changed to SPI. The EC will accept commands across the I2C using | |
| a special message protocol, and provide responses. | |
| config CROS_EC_LPC | |
| bool "Enable Chrome OS EC LPC driver" | |
| depends on CROS_EC | |
| help | |
| Enable I2C access to the Chrome OS EC. This is used on x86 | |
| Chromebooks such as link and falco. The keyboard is provided | |
| through a legacy port interface, so on x86 machines the main | |
| function of the EC is power and thermal management. | |
| config CROS_EC_SPI | |
| bool "Enable Chrome OS EC SPI driver" | |
| depends on CROS_EC | |
| help | |
| Enable SPI access to the Chrome OS EC. This is used on newer | |
| ARM Chromebooks such as pit, pi and nyan-big. The SPI interface | |
| provides a faster and more robust interface than I2C but the bugs | |
| are less interesting. | |
| config DM_CROS_EC | |
| bool "Enable Driver Model for Chrome OS EC" | |
| depends on DM | |
| help | |
| Enable driver model for the Chrome OS EC interface. This | |
| allows the cros_ec SPI driver to operate with CONFIG_DM_SPI | |
| but otherwise makes few changes. Since cros_ec also supports | |
| LPC (which doesn't support driver model yet), a full | |
| conversion is not yet possible. | |
| config CONFIG_FSL_SEC_MON | |
| bool "Enable FSL SEC_MON Driver" | |
| help | |
| Freescale Security Monitor block is responsible for monitoring | |
| system states. | |
| Security Monitor can be transitioned on any security failures, | |
| like software violations or hardware security violations. |