path: root/zephyr/Kconfig

# Copyright 2020 The ChromiumOS Authors
# 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"
rsource "fake/Kconfig"
rsource "mock/Kconfig"
rsource "subsys/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 "shim/chip/mchp/Kconfig.xec"
rsource "Kconfig.adc"
rsource "Kconfig.ap_power"
rsource "Kconfig.battery"
rsource "Kconfig.charger"
rsource "Kconfig.chargesplash"
rsource "Kconfig.board_version"
rsource "Kconfig.cbi"
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.host_interface"
rsource "Kconfig.i2c"
rsource "Kconfig.init_priority"
rsource "Kconfig.ioex"
rsource "Kconfig.keyboard"
rsource "Kconfig.led"
rsource "Kconfig.led_dt"
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.usba"
rsource "Kconfig.usbc"
rsource "Kconfig.watchdog"
rsource "Kconfig.wireless_charger"

# 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_HOST_INTERFACE_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_BACKLIGHT_LID_ACTIVE_LOW
	bool "Control for the display backlight is active low"
	depends on PLATFORM_EC_BACKLIGHT_LID
	help
	  Support controlling the backlight with an active low GPIO signal.
          This config option expects a GPIO_ENABLE_BACKLIGHT_L defined.

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_CHIPSET_RESET_HOOK
	bool "Provide a hook for when the AP resets"
	default y
	help
	  Enables support for the legacy 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.

	  The hook is shimmed into the AP callback API, so you can
	  set up a ap_power_ev_callback with the AP_POWER_RESET
	  event to call a handler when the AP is about to be reset.

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.
	  The legacy hooks are shimmed into the AP callback API, so
	  a ap_power_ev_callback can be set up with the events
	  AP_POWER_RESUME_INIT and AP_POWER_SUSPEND_COMPLETE to
	  call a handler when these events are triggered.

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_IRQ
	bool "Console command: irq"
	depends on TRACING_ISR && TRACING_USER
	help
	  Enable the "irq" console command. This command lists the number of
	  IRQ calls.

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 <value> - Sets the sleepmask to <value>, 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 n
	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 '<expr>' 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).

config PLATFORM_EC_EXTPOWER
	bool "Support external power detection"
	depends on PLATFORM_EC_HOOKS && PLATFORM_EC_HOSTCMD
	help
	  Enable code for handling the detection of external power.
	  If PLATFORM_EC_EXTPOWER_GPIO is not set, then the board
	  must supply the function board_check_extpower in order
	  to check for external power, and update the state via
	  extpower_handle_update().

config PLATFORM_EC_EXTPOWER_GPIO
	bool "GPIO-based external power detection"
	select PLATFORM_EC_EXTPOWER
	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.

config PLATFORM_EC_FLASH_CROS
	bool
	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 || RISCV) && !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.

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.

	  The host interface type is selected based on the AP type, but can be
	  changed though the CONFIG_PLATFORM_EC_HOST_INTERFACE_TYPE choice.

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_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 or aliased.

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_POWER_COMMON
	bool
	default y
	depends on PLATFORM_EC_POWERSEQ
	help
	  Compile common code for AP power state machine.

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
    depends on PLATFORM_EC_MKBP_EVENT
    default $(dt_node_has_prop,/ec-mkbp-event-wakeup-mask,wakeup-mask)
    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
    depends on PLATFORM_EC_MKBP_EVENT
    default $(dt_node_has_prop,/ec-mkbp-host-event-wakeup-mask,wakeup-mask)
    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_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.

config PLATFORM_EC_PWM_HC
	bool
	help
	  Enable the PWM (Pulse Width Modulation) host command support. This
	  implements EC_CMD_PWM_SET_DUTY and EC_CMD_PWM_GET_DUTY.

config PLATFORM_EC_PWM_DISPLIGHT
	bool "PWM display backlight"
	default y
	depends on DT_HAS_CROS_EC_DISPLIGHT_ENABLED
	select PLATFORM_EC_PWM_HC
	help
	  Enables display backlight controlled by a PWM signal connected
	  directly to the EC chipset. The board devicetree file must define a
	  "cros-ec,displight" compatible device node.

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 PLATFORM_EC_SHA256_MODE
	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 # PLATFORM_EC_SHA256_MODE

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"
	depends on PLATFORM_EC_TEMP_SENSOR
	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_HOST_COMMAND_STATUS
	bool "Return in-progress status for slow host commands"
	default y if PLATFORM_EC_HOST_INTERFACE_SHI
	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 controller 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.

config PLATFORM_EC_MATH_UTIL
	bool "Math utility"
	default y
	help
	  Math utilities including bitmask manipulation, division rounding,
	  trigonometric function, etc.

endif # PLATFORM_EC