2 bool "Enable crosec command"
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).
12 bool "Enable Chrome OS EC"
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.
21 bool "Enable Chrome OS EC I2C driver"
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.
30 bool "Enable Chrome OS EC LPC driver"
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.
39 bool "Enable Chrome OS EC SPI driver"
42 Enable SPI access to the Chrome OS EC. This is used on newer
43 ARM Chromebooks such as pit, pi and nyan-big. The SPI interface
44 provides a faster and more robust interface than I2C but the bugs
48 bool "Enable Driver Model for Chrome OS EC"
51 Enable driver model for the Chrome OS EC interface. This
52 allows the cros_ec SPI driver to operate with CONFIG_DM_SPI
53 but otherwise makes few changes. Since cros_ec also supports
54 LPC (which doesn't support driver model yet), a full
55 conversion is not yet possible.
57 config CONFIG_FSL_SEC_MON
58 bool "Enable FSL SEC_MON Driver"
60 Freescale Security Monitor block is responsible for monitoring
62 Security Monitor can be transitioned on any security failures,
63 like software violations or hardware security violations.