1config CMD_CROS_EC 2 bool "Enable crosec command" 3 depends on CROS_EC 4 help 5 Enable command-line access to the Chrome OS EC (Embedded 6 Controller). This provides the 'crosec' command which has 7 a number of sub-commands for performing EC tasks such as 8 updating its flash, accessing a small saved context area 9 and talking to the I2C bus behind the EC (if there is one). 10 11config CROS_EC 12 bool "Enable Chrome OS EC" 13 help 14 Enable access to the Chrome OS EC. This is a separate 15 microcontroller typically available on a SPI bus on Chromebooks. It 16 provides access to the keyboard, some internal storage and may 17 control access to the battery and main PMIC depending on the 18 device. You can use the 'crosec' command to access it. 19 20config CROS_EC_I2C 21 bool "Enable Chrome OS EC I2C driver" 22 depends on CROS_EC 23 help 24 Enable I2C access to the Chrome OS EC. This is used on older 25 ARM Chromebooks such as snow and spring before the standard bus 26 changed to SPI. The EC will accept commands across the I2C using 27 a special message protocol, and provide responses. 28 29config CROS_EC_LPC 30 bool "Enable Chrome OS EC LPC driver" 31 depends on CROS_EC 32 help 33 Enable I2C access to the Chrome OS EC. This is used on x86 34 Chromebooks such as link and falco. The keyboard is provided 35 through a legacy port interface, so on x86 machines the main 36 function of the EC is power and thermal management. 37 38config CROS_EC_SANDBOX 39 bool "Enable Chrome OS EC sandbox driver" 40 depends on CROS_EC && SANDBOX 41 help 42 Enable a sandbox emulation of the Chrome OS EC. This supports 43 keyboard (use the -l flag to enable the LCD), verified boot context, 44 EC flash read/write/erase support and a few other things. It is 45 enough to perform a Chrome OS verified boot on sandbox. 46 47config CROS_EC_SPI 48 bool "Enable Chrome OS EC SPI driver" 49 depends on CROS_EC 50 help 51 Enable SPI access to the Chrome OS EC. This is used on newer 52 ARM Chromebooks such as pit, pi and nyan-big. The SPI interface 53 provides a faster and more robust interface than I2C but the bugs 54 are less interesting. 55 56config CONFIG_FSL_SEC_MON 57 bool "Enable FSL SEC_MON Driver" 58 help 59 Freescale Security Monitor block is responsible for monitoring 60 system states. 61 Security Monitor can be transitioned on any security failures, 62 like software violations or hardware security violations. 63 64config PCA9551_LED 65 bool "Enable PCA9551 LED driver" 66 help 67 Enable driver for PCA9551 LED controller. This controller 68 is connected via I2C. So I2C needs to be enabled. 69 70config PCA9551_I2C_ADDR 71 hex "I2C address of PCA9551 LED controller" 72 depends on PCA9551_LED 73 default 0x60 74 help 75 The I2C address of the PCA9551 LED controller. 76 77config RESET 78 bool "Enable support for reset drivers" 79 depends on DM 80 help 81 Enable reset drivers which can be used to reset the CPU or board. 82 Each driver can provide a reset method which will be called to 83 effect a reset. The uclass will try all available drivers when 84 reset_walk() is called. 85