# Copyright 2020 The Chromium OS Authors. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. rsource "app/Kconfig" rsource "drivers/Kconfig" rsource "emul/Kconfig" if ZTEST config HAS_TEST_TASKS bool "Whether or not this test includes custom tasks" help This enables custom tasks for tests. When set to 'y', the file "shimmed_test_tasks.h" will be included and is expected to set CROS_EC_TASK_LIST. endif # ZTEST menuconfig PLATFORM_EC bool "Chromium OS EC shim" imply PRINTK imply SHELL help The platform/ec Zephyr module allows some code from the existing Chromium OS EC project to be "shimmed" into Zephyr. With this it is possible to use the existing code base within Zephyr. Once we manage to get a platform fully running with Zephyr we will progressively upstream components and turn off the shim for each one until eventually all code is on the Zephyr side. if PLATFORM_EC rsource "shim/chip/npcx/Kconfig.npcx" rsource "Kconfig.adc" rsource "Kconfig.battery" rsource "Kconfig.board_version" rsource "Kconfig.console" rsource "Kconfig.console_cmd_mem" rsource "Kconfig.debug_assert" rsource "Kconfig.defaults" rsource "Kconfig.espi" rsource "Kconfig.flash" rsource "Kconfig.header" rsource "Kconfig.init_priority" rsource "Kconfig.ioex" rsource "Kconfig.keyboard" rsource "Kconfig.led" rsource "Kconfig.panic" rsource "Kconfig.port80" rsource "Kconfig.powerseq" rsource "Kconfig.pmic" rsource "Kconfig.mkbp_event" rsource "Kconfig.motionsense" rsource "Kconfig.rtc" rsource "Kconfig.stacks" rsource "Kconfig.system" rsource "Kconfig.tasks" rsource "Kconfig.temperature" rsource "Kconfig.timer" rsource "Kconfig.throttle_ap" rsource "Kconfig.usbc" rsource "Kconfig.watchdog" # Define PLATFORM_EC_... options to enable EC features. Each Kconfig should be # matched by a line in zephyr/shim/include/config_chip.h which #defines the # corresponding EC CONFIG if this Kconfig is enabled. # # Please keep these in alphabetical order config PLATFORM_EC_ACPI bool "Advanced Confiugration and Power Interface (ACPI)" default y if AP_X86 && PLATFORM_EC_ESPI help Enable the Advanced Configuration and Power Interface (ACPI) in the EC. ACPI is a standard interface to the Application Processor (AP) that abstracts the hardware specific details for controlling and managing the board. This includes interfaces for monitoring or controlling features, including: keyboard backlight fan speed temperature sensors charging properties device orientation (tablet or laptop mode) https://uefi.org/sites/default/files/resources/ACPI_Spec_6_4_Jan22.pdf config PLATFORM_EC_AP_RESET_LOG bool "Enable the Application Processor reset log" depends on PLATFORM_EC_HOSTCMD_GET_UPTIME_INFO default y if PLATFORM_EC_POWERSEQ help Enable logging of AP reset events. This information is provided in response to the EC_CMD_GET_UPTIME_INFO host command. config PLATFORM_EC_BACKLIGHT_LID bool "Control the display backlight based on the lid switch" depends on PLATFORM_EC_HOSTCMD default y help Support controlling the display backlight based on the state of the lid switch. The EC will disable the backlight when the lid is closed. This option enables the EC_CMD_SWITCH_ENABLE_BKLIGHT host command, which allows the AP to override the backlight setting until the next change in the lid state. config PLATFORM_EC_BOARD_RESET_AFTER_POWER_ON bool "Work around H1 reset issue" help Enable this if H1 resets the EC after power-on. This is needed so the EC can delay its start-up until the reset happens. Without this option the EC starts up, performs some amount of processing and then gets a reset that it is not expecting. config PLATFORM_EC_WAIT_RESET_CYCLES_PER_ITERATION int "CPU execution cycle per iteration for waiting the H1 reset" default 4 depends on PLATFORM_EC_BOARD_RESET_AFTER_POWER_ON help This options specifies the number of CPU execution cycles per delay loop iteration, while waiting for the H1 to reset. config PLATFORM_EC_PREINIT_HW_CYCLES_PER_SEC int "CPU power up clock cycle per second" default 100000000 depends on PLATFORM_EC_BOARD_RESET_AFTER_POWER_ON help This option specifies the frequency (in Hz) of the CPU core when coming out of a power on reset. config PLATFORM_EC_BRINGUP bool "Enable early bringup debugging features" help Enable the CONFIG_BRINGUP platform/ec configuration option, turning on a variety of miscellaneous early bringup debugging features. These features include: - The device will not power on when the EC starts. The power button will need to be pressed, or the "powerbtn" command issued. - Enable power signal logging, showing relative timestamps for each power signal change. - And more! You can search the codebase for CONFIG_BRINGUP to see all of the features this flag will toggle. config PLATFORM_EC_BYPASS_CBI_EEPROM_WP_CHECK bool "Bypass CBI EEPROM Write Protect" help Bypass the CBI EEPROM write protect checks. This should ONLY be defined during bringup, and should never be defined on a shipping or release platform. When defined, ectool can be used to reprogram all CBI fields, regardless of the state of the hardware write protect. config PLATFORM_EC_EEPROM_CBI_WP bool "EC can independently set the CBI EEPROM WP signal" help Define this if the EC can independently set the CBI EEPROM WP signal. The accompanying hardware must ensure that the CBI WP gets latched and is only reset when EC_RST_ODL is asserted. select PLATFORM_EC_BYPASS_CBI_EEPROM_WP_CHECK choice PLATFORM_EC_CBI_STORAGE_TYPE prompt "Select CBI storage Type" optional help CBI is a means for accessing board information, typically set during the factory process. This allows selection of the physical storage of CBI source. See here for detailed information on CBI: https://chromium.googlesource.com/chromiumos/docs/+/master/design_docs/cros_board_info.md config PLATFORM_EC_CBI_EEPROM bool "CBI EEPROM support" depends on PLATFORM_EC_I2C help Enables Chromium OS Board Info (CBI) from EEPROM. One must specify both I2C_PORT_EEPROM and I2C_ADDR_EEPROM_FLAGS to the CBI EEPROM's i2c port and 7-bit i2c address. config PLATFORM_EC_CBI_GPIO bool "CBI GPIO support" help Enables Chromium OS Board Info (CBI) from strapping pins. EC reads the BOARD ID and SKU ID from GPIOs and then substantiate in-memory CBI for AP to query. endchoice config PLATFORM_EC_CHIPSET_RESET_HOOK bool "Provide a hook for when the AP resets" default y help Enables support for the HOOK_CHIPSET_RESET hook. This can be used by code that needs to run before a programmatic reset actually happens. Note that these hooks don't run with a cold reset, only when the AP decides to reset itself. You can declare a hook like this: DECLARE_HOOK(HOOK_CHIPSET_RESET, do_something, HOOK_PRIO_DEFAULT); Then do_something() will be called just before the reset happens. config PLATFORM_EC_CHIPSET_RESUME_INIT_HOOK bool "Enable chipset resume-init and suspend-complete hooks" help Enables support for the HOOK_CHIPSET_RESUME_INIT and HOOK_CHIPSET_SUSPEND_COMPLETE hooks. These hooks are usually used to initialize/disable the SPI driver, which goes to sleep on suspend. Require to initialize it first such that it can receive a host resume event, that notifies the normal resume hook. config PLATFORM_EC_CHIP_INIT_ROM_REGION bool "Enables the use of a dedicated init ROM region" help Enable this flag if the board has a `.init_rom` region. This will activate routines in `init_rom.h` to access objects in this region. config PLATFORM_EC_CONSOLE_CMD_HCDEBUG bool "Console command: hcdebug" default y depends on PLATFORM_EC_HOSTCMD help Enable the 'hcdebug' console command. This comamnd is used to change, at runtime, the amount of debug generated by the host command processing. hcdebug [off | normal | every | params] See PLATFORM_EC_HOSTCMD_DEBUG_MODE for more detail. config PLATFORM_EC_CONSOLE_CMD_MEM bool "Console command: md, rw" default y help Enable memory related console commands. md - dump memory values rw - read or write in memory config PLATFORM_EC_CONSOLE_CMD_SLEEPMASK bool "Console command: sleepmask read" default y if PM help Enable the 'sleepmask' console command. This command is used to display the state of the sleep mask, which controls whether the EC chip is allowed to enter deep sleep states to save power. config PLATFORM_EC_CONSOLE_CMD_SLEEPMASK_SET bool "Console command: sleepmask set" depends on PLATFORM_EC_CONSOLE_CMD_SLEEPMASK default y help Enable changing the state of the current sleep mask. sleepmask on - Sets the SLEEP_MASK_FORCE_NO_DSLEEP bit in the sleep mask, preventing the system from entering sleep. sleepmask off - Clears the SLEEP_MASK_FORCE_NO_DSLEEP bit in the sleep mask. The system may enter deep sleep depending on the state of other mask bits. sleepmask - Sets the sleepmask to , overriding all bits with the specified value. config PLATFORM_EC_CONSOLE_CMD_S5_TIMEOUT bool "Console command: s5_timeout" default n help This command allows the user to specify a time to remain in S5 before dropping to G3, in order to help power testing. config PLATFORM_EC_CONSOLE_CMD_SHMEM bool "Console command: shmem" default y help This command prints basic information about the EC shared memory, located at the top of RAM, above all RAM symbols: total size, bytes used and the maximum number of bytes that have been used since the EC started running. config PLATFORM_EC_CROS_FWID_VERSION bool "Include CrOS FWID version" default y help Include Chrome OS FWID in version output. The CrOS FWID will be common across OS, AP firmware and EC firmware when built together. config PLATFORM_EC_DEBUG_ASSERT bool "Enable assertion failures" default y help Assertion failures are used to flag conditions which should not occur and thus indicate the software is unable to continue execution. This option can be disabled so that the assert() macro becomes a NOP. In this case, execution will continue but the results are unpredictable. Messages are of the form: ASSERTION FAILURE '' in function() at file:line Note: There is also ASSERT() which is an alias of assert(), used in host code where cstdlib is used. config PLATFORM_EC_DP_REDRIVER_TDP142 bool "Include TDP142 DisplayPort redriver driver" default n help Include a driver for the Texas Instruments TDP142 DisplayPort linear redriver chip. config PLATFORM_EC_EMULATED_SYSRQ bool "Emulate sysrq events to AP" help The magic SysRq key is a key combo which allows the user to perform various low-level commands regardless of the system's state. See here for the key combos: https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html This option enables support for sending emulated SysRq events to AP (on designs with a keyboard, SysRq is passed as normal key presses). menuconfig PLATFORM_EC_ESPI bool "eSPI" depends on ESPI && AP default y help Enable the Enhanced Serial Peripheral Interface (eSPI) shim layer. eSPI supports a shared physical connection between several on-board devices, similar to SPI. It adds a few optional signals and a protocol layer to provide independent 'channels' for each device to communicate over. eSPI is the replacement for LPC (Low-Pin-Count bus). See here for information about eSPI: https://www.intel.com/content/dam/support/us/en/documents/software/chipset-software/327432-004_espi_base_specification_rev1.0_cb.pdf config PLATFORM_EC_EXTPOWER_GPIO bool "GPIO-based external power detection" depends on PLATFORM_EC_HOOKS && PLATFORM_EC_HOSTCMD help Enable shimming the extpower_gpio module, which provides GPIO-based external power presence detection features. The project should define a GPIO pin named GPIO_AC_PRESENT, with extpower_interrupt configured as the handler in gpio_map.h. config PLATFORM_EC_FLASH_CROS bool "Enable flash support" default y if FLASH_SIZE > 0 help Enables access to the device's flash through a simple API. With this is it possible for the EC to update its flash while running, e.g. to support auto-update. Various write-protection features are also provided. config PLATFORM_EC_FPU bool "Support floating point" depends on FPU && CPU_CORTEX_M && !NEWLIB_LIBC default y help This enables support for floating point. This is generally already provided in Zephyr, but the EC side expects a few functions to be available which are not available with Zephyr's minimal lib: sqrtf() and fabsf(). Enabling this options defines them. For now this is only supported on Cortex-M4. config PLATFORM_EC_HOOKS bool "Hooks and deferred compatibility shim" default y help Enable translation of DECLARE_DEFERRED() and hook_call_deferred() to Zephyr's work queues, along with a compatible DECLARE_HOOK implementation. This option is needed by many features in the EC. Disabling it will likely cause build errors. menuconfig PLATFORM_EC_HOSTCMD bool "Host commands" default n if ARCH_POSIX default y if AP select HAS_TASK_HOSTCMD help Enable the host commands shim in platform/ec. This handles communication with the AP. The AP sends a command to the EC and it responds when able. An interrupt can be used to indicate to the AP that the EC has something for it. config PLATFORM_EC_HOSTCMD_GET_UPTIME_INFO bool "Host command: EC_CMD_GET_UPTIME_INFO" default PLATFORM_EC_HOSTCMD help Enable the EC_CMD_GET_UPTIME_INFO host command which reports the time the EC has been powered up, the number of AP resets, an optional log of AP-reset events and some flags. config PLATFORM_EC_HOSTCMD_REGULATOR bool "Host command of voltage regulator control" help Enable host commands (EC_CMD_REGULATOR_) for controlling voltage regulator. The board should also implement board functions defined in include/regulator.h. choice PLATFORM_EC_HOSTCMD_DEBUG_MODE prompt "Select method to use for HostCmd Debug Mode" depends on PLATFORM_EC_HOSTCMD default HCDEBUG_NORMAL help Sets the value of the host command debug mode to use on startup. config HCDEBUG_OFF bool "Host command debug mode OFF" help No host command debug messages are shown. Host command error messages will still output. config HCDEBUG_NORMAL bool "Host command debug mode NORMAL" help Display host commands receieved from the AP. Repeated commands are shown with a "+" and "++" symbol. config HCDEBUG_EVERY bool "Host command debug mode EVERY" help Display all host commands received from the AP, including repeated commands. config HCDEBUG_PARAMS bool "Host command debug mode PARAMS" help Display all host commands and the parameters received from the AP. endchoice # PLATFORM_EC_HOSTCMD_DEBUG_MODE config PLATFORM_EC_I2C bool "I2C shim" default n if ARCH_POSIX default y imply I2C help Enable compilation of the EC i2c module. Once enabled, it will be possible to make calls using the old platform/ec i2c APIs defined in include/i2c.h and implemented in common/i2c_master.c. Doing so should make shimming other platform/ec modules which rely on i2c communication "just work" without requiring any further code changes. config PLATFORM_EC_I2C_DEBUG bool "I2C Tracing" default n if ARCH_POSIX depends on PLATFORM_EC_I2C help This option enables I2C bus communication tracing. Use the console command "i2ctrace" to enable and disable tracing on specific I2C peripherals. Please see the I2C debugging documentation for more details: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/docs/i2c-debugging.md config PLATFORM_EC_I2C_DEBUG_PASSTHRU bool "I2C Passthru Debug" default n if ARCH_POSIX depends on PLATFORM_EC_I2C help This option enables extra debug for I2C passthru operations initiated by the AP. config PLATFORM_EC_CONSOLE_CMD_I2C_PORTMAP bool "Console command: i2c_portmap" default y depends on PLATFORM_EC_I2C help Enable the 'i2c_portmap' console command. This comamnd is used to display the mapping of the I2C ports defined by the named-i2c-ports node to the physical port and remote port indexes. config PLATFORM_EC_CONSOLE_CMD_I2C_SPEED bool "Console command: i2cspeed" default n depends on PLATFORM_EC_I2C help Enable the 'i2cspeed' console command. This comamnd is used to display an I2C port's bus speed. Additionally, for ports with the DYNAMIC_SPEED port flag set, the speed can be set. In all cases, the bus speed is in units of kHz. config PLATFORM_EC_HOSTCMD_I2C_CONTROL bool "Host command: i2c_control" default n depends on PLATFORM_EC_I2C help Enable the I2C_CONTROL host command. This comamnd is used to display an I2C port's bus speed. Additionally, for ports with the DYNAMIC_SPEED port flag set, the speed can be set. In all cases, the bus speed is in units of kHz. More functionality of the command may be added in the future. config PLATFORM_EC_SMBUS_PEC bool "Packet error checking support for SMBus" help If enabled, adds error checking support for i2c_readN, i2c_writeN, i2c_read_string and i2c_write_block. Where - write operation appends an error checking byte at end of transfer, and - read operatoin verifies the correctness of error checking byte from the slave. Set I2C_FLAG on addr_flags parameter to use this feature. This option also enables error checking function on smart batteries. config PLATFORM_EC_LID_SWITCH bool "Lid switch" help Enable shimming the lid switch implementation and related commands in platform/ec. The lid switch can affect power-on behaviour. For example, when the lid is opened, the device may automatically power on. This requires a GPIO named GPIO_LID_OPEN to be defined in gpio_map.h. config PLATFORM_EC_MKBP_INPUT_DEVICES bool "Input devices via MKBP" help Enable passing events from various input sources to AP via MKBP. This include buttons (power, volume); switches (lid, tablet mode) and sysrq. config PLATFORM_EC_LOW_POWER_IDLE bool default y if PM help Enable low power idle modes in the EC chipset. This is automatically enabled when the Zephyr power management options are enabled with the PM option. config PLATFORM_EC_MKBP_EVENT bool "MKBP event" help Enable this to support MKBP event. MKBP event is used not only for matrix keyboard but also for other many events like button, switch, fingerprint, and etc. This requires a MKBP event delivery method(GPIO, HOST_EVENT, and etc) config PLATFORM_EC_MKBP_EVENT_WAKEUP_MASK bool "MKBP event wakeup mask" depends on PLATFORM_EC_MKBP_EVENT help Enable which MKBP events should wakeup the system in suspend. For example: The MKBP events are enabled in the devicetree by the wakeup-mask property of the ec-mkbp-event-wakeup-mask node as follows: wakeup-mask = <(MKBP_EVENT_KEY_MATRIX | \ MKBP_EVENT_HOST_EVENT | \ MKBP_EVENT_SENSOR_FIFO)>; The mkbp events are defined in dt-bindings/wake_mask_event_defines.h config PLATFORM_EC_MKBP_HOST_EVENT_WAKEUP_MASK bool "MKBP host event wakeup mask" depends on PLATFORM_EC_MKBP_EVENT help Enable which host events should wakeup the system in suspend. For example: The host events are enabled in the devicetree by the wakeup-mask property of the ec-mkbp-host-event-wakeup-mask node as follows: wakeup-mask = <(HOST_EVENT_LID_OPEN | \ HOST_EVENT_POWER_BUTTON | \ HOST_EVENT_AC_CONNECTED)>; The host events are defined in dt-bindings/wake_mask_event_defines.h config PLATFORM_EC_MPU bool "Support Memory-Protection Unit (MPU)" depends on CPU_CORTEX_M select ARM_MPU default y help This enables support a Memory-Protection Unit which can limit access to certain areas of memory. This can be used to protect code or data from being written to improve security or to find bugs. It causes any code in the iram.text section to be protected when system jump is disabled (see system_disable_jump()). It also stops execution of the image that is not currently being executed (read-only or read-write). If internal storage is used, this is achieved by not allowing code execution in that area. For external storage, it disallows loading any code into RAM. config PLATFORM_EC_PANIC bool "Panic output" default y help Enable support for collecting and reporting panic information, caused by exceptions in the EC. This can be the result of a watchdog firing, a division by zero, unaligned access, stack overflow or assertion failure. The panic information is made available to the AP via the EC_CMD_GET_PANIC_INFO host command and a 'panicinfo' console command config PLATFORM_EC_PORT80 bool "Port 80 support" default y if AP_X86 && PLATFORM_EC_POWERSEQ help Enable the port80 module, a way to report progress of the AP's boot sequence, assuming that the EC can detect these writes on the I/O bus. The EC buffers calls to port_80_write() and occasionally prints a message when there are new writes. See here for more information: https://en.wikipedia.org/wiki/Power-on_self-test#Progress_and_error_reporting config PLATFORM_EC_POWER_BUTTON bool "Power-button support" depends on PLATFORM_EC_HOSTCMD help Enable shimming the power button implementation and related commands in platform/ec. This is used to implement the Chromium OS shutdown sequence. This requires a GPIO named GPIO_POWER_BUTTON_L in gpio_map.h. config PLATFORM_EC_PWM bool "PWM (Pulse Width Modulation) module" help Enable the PWM (Pulse Width Modulation) module. This module is used to support variable brightness LEDs, backlight controls, and variable-speed fans. config PLATFORM_EC_PWM_DISPLIGHT bool "PWM display backlight" depends on PLATFORM_EC_PWM help Enables display backlight controlled by a PWM signal connected directly to the EC chipset. The board devicetree file must define the PWM channel used for the display backlight control and assign the "displight" node label to it. config PLATFORM_EC_RTC bool "Real-time clock (RTC)" help Enable support for a real-time clock. Typically this is available on-chip in the EC. It provides a way to track the passage of time in terms of second and minutes. Once set, and provided that it has a suitable power source, it should be able to keep reasonably accurate time over a period of days and weeks. The starting EC clock is typically set by the AP, since it has access to the outside world and can often obtain the current time when desired. choice "SHA256 method" prompt "Select method to use for computing SHA256 hashes" help The verified boot mechanism requests the hash of the entire read-write portion of the EC image. This is typically done using a hashing block in the EC, so that it is as fast as possible. A fallback software algorithm is available if needed. config PLATFORM_EC_SHA256_SW bool "Compute SHA256 in software" help Enable this if your EC chip does not support hardware-accelerated SHA256 computation. This enables the software algorithm which is quite slow but will work in a pinch. config PLATFORM_EC_SHA256_HW_ACCELERATE bool "Compute SHA256 in hardware" help Enable this if your EC chip supports hardware-accelerated SHA256 computation. This is faster than running the algorithm in software, so is desirable. The chip support must implement the functions in sha256.h endchoice # SHA256 method config PLATFORM_EC_SWITCH bool "Memory mapped switches" depends on PLATFORM_EC_HOSTCMD default y help Enable the reporting of the platform switches state to the AP using memory mapped storage provided by the host command interface. The platform switches include: LID open power button pressed write protect disabled recovery switch This also enables the "mmapinfo" console command to report the current state of all switches. choice PLATFORM_EC_SWITCHCAP_TYPE prompt "Enable switchcap support" optional help Enable support for switchcap used to power on the AP. If enabled, type of switchcap must be selected and node in device tree must be added that describes the driver and pins used to control the switchcap. config PLATFORM_EC_SWITCHCAP_GPIO bool "GPIO controlled switchcap" help Enable support for the GPIO controlled switchcap. Pins used for controlling the switchcap must be defined in board's device tree. config PLATFORM_EC_SWITCHCAP_LN9310 bool "LN9310 switchcap driver" depends on PLATFORM_EC_I2C help Enable support for the LION Semiconductor LN9310 switched capacitor converter. This will export definitions for ln9310_init, ln9310_interrupt, and ln9310_power_good, which project-specific code should call appropriately if there's no switchcap node in device tree. endchoice config PLATFORM_EC_SYSTEM_UNLOCKED bool "System unlocked: allow dangerous commands while in development" default y if PLATFORM_EC_BRINGUP help System should remain unlocked even if write protect is enabled. NOTE: This should ONLY be defined during bringup, and should never be defined on a shipping / released platform. When defined, CBI allows ectool to reprogram all the fields. Normally, it refuses to change certain fields. (e.g. board version, OEM ID) Also, this enables PD in RO for TCPMv2. config PLATFORM_EC_THROTTLE_AP bool "CPU throttling" help Enable throttling the CPU based on the temperature sensors. When they detect that the CPU is getting too hot, the CPU is throttled to a lower speed. This reduce the CPU's power output and eventually results in a lower temperature. menuconfig PLATFORM_EC_TIMER bool "Timer module" default y help Enable compilation of the EC timer module. This provides support for delays, getting the current time and setting alarms. This option is needed by many features in the EC. Disabling it will likely cause build errors. config PLATFORM_EC_VBOOT_EFS2 bool "EFS2 verified EC boot" default y if !SOC_POSIX help Enables Early Firmware Selection v2 (EFS2) verified boot. When booting a Chromium OS image we're actually packing both an RO image and an RW image into flash. The RO image is loaded first. EFS2 runs at boot and verifies the integrity of the RW image by sending a hash of the image to the Google Security Chip (GSC). Once the GSC verifies the hash, EFS2 calls sysjump and reboot the EC using the RW image. config PLATFORM_EC_VBOOT_HASH bool "Host command: EC_CMD_VBOOT_HASH" depends on PLATFORM_EC_HOSTCMD default y help Allows the AP to request hashing functions from the EC. Verified boot can update the EC's read/write code when it detects that it is an incorrect version. It detects this by asking the EC to hash itself. If the hash is incorrect, new code is write to the EC's read/write area. config PLATFORM_EC_VSTORE bool "Secure temporary storage for verified boot" default y help Enable support for storing a block of data received from the AP so it can be read back later by the AP. This is helpful since the AP may reboot or resume and want the data early in its start-up before it has access to SDRAM. There are a fixed number of slots and each can hold a fixed amount of data (EC_VSTORE_SLOT_SIZE bytes). Once a slot is written it is locked and cannot be written again unless explicitly unlocked. Stored data is preserved when the EC moved from RO to RW. config PLATFORM_EC_VSTORE_SLOT_COUNT int "Number of slots" depends on PLATFORM_EC_VSTORE default 1 help Set the number of slots available in the verified-boot store. The number required depends on the AP firmware. Typically the vstore is used only for recording a hash of the read-write AP firmware for checking on resume. For this, one slot is enough. menuconfig PLATFORM_EC_WATCHDOG bool "Watchdog" depends on WATCHDOG default y help Enable the watchdog functionality. The watchdog timer will reboot the system if the hook task (which is the lowest-priority task on the system) gets starved for CPU time and isn't able to fire its HOOK_TICK event. Chromium EC system uses an auxiliary timer to handle the system warning event. This leaves some time to the system for preparing & printing the debug information. The interval between reloads of the watchdog timer should be less than half of the auxiliary timer (PLATFORM_EC_WATCHDOG_PERIOD_MS - PLATFORM_EC_WATCHDOG_WARNING_LEADING_TIME_MS). config PLATFORM_EC_WORKAROUND_FLASH_DOWNLOAD_API bool "Workaround needed for npcx9 ES1 chip" depends on SOC_SERIES_NPCX9 help There's a bug in the flash download API on the ES1 version of the npcx9 chips that requires some workarounds. This is needed for sysjump to work properly. config PLATFORM_EC_ASSERT_CCD_MODE_ON_DTS_CONNECT bool "Assert CCD Mode" help Assert CCD_MODE_ODL when a DTS debug accessory is connected to the CCD USBC port. GPIO_CCD_MODE_ODL should be configured with GPIO_ODR_HIGH flag. config PLATFORM_EC_CCD_USBC_PORT_NUMBER int "CCD USB Port Number" default 0 help USB port number of the CCD enabled USBC port. config PLATFORM_EC_I2C_PASSTHRU_RESTRICTED bool "Restrict I2C PASSTHRU command" depends on PLATFORM_EC_I2C help Enables board-specific restrictions for the I2C PASSTHRU host command. Once enabled, board_allow_i2c_passthru function has to be implemented, which defines the allowed usage of the command. config PLATFORM_EC_HOST_COMMAND_STATUS bool "Return in-progress status for slow host commands" default n help When the AP is attached to the EC via a serialized bus such as I2C or SPI, it needs a way to minimize the length of time an EC command will tie up the bus (and the kernel driver on the AP). If this config is defined, the EC may return an in-progress result code for slow commands such as flash erase/write instead of stalling until the command finishes processing, and the AP may then inquire the status of the current command and/or the result of the previous command. config PLATFORM_EC_AMD_SB_RMI bool "Enable driver for AMD SB-RMI interface" help AMD platforms provide the Side-Band Remote Management Interface. SB-RMI provides an interface for an external SMBus master to perform tasks such as managing power consumption and power limits of the CPU socket. config PLATFORM_EC_AMD_STT bool "Enable driver for AMD STT interface" depends on PLATFORM_EC_AMD_SB_RMI help AMD platforms provide the Skin Temperature Tracking (STT) interface. Skin temperature management can be used to maximize the system performance while keeping the skin temperature within its specification. It makes use of the thermal capacitance of the system to temporarily boost above the sustainable power limit, while the chassis skin temperatures are below limits. endif # PLATFORM_EC