Edit File: cros_ec_commands.h
/* * Host communication command constants for ChromeOS EC * * Copyright (C) 2012 Google, Inc * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * The ChromeOS EC multi function device is used to mux all the requests * to the EC device for its multiple features: keyboard controller, * battery charging and regulator control, firmware update. * * NOTE: This file is copied verbatim from the ChromeOS EC Open Source * project in an attempt to make future updates easy to make. */ #ifndef __CROS_EC_COMMANDS_H #define __CROS_EC_COMMANDS_H /* * Protocol overview * * request: CMD [ P0 P1 P2 ... Pn S ] * response: ERR [ P0 P1 P2 ... Pn S ] * * where the bytes are defined as follow : * - CMD is the command code. (defined by EC_CMD_ constants) * - ERR is the error code. (defined by EC_RES_ constants) * - Px is the optional payload. * it is not sent if the error code is not success. * (defined by ec_params_ and ec_response_ structures) * - S is the checksum which is the sum of all payload bytes. * * On LPC, CMD and ERR are sent/received at EC_LPC_ADDR_KERNEL|USER_CMD * and the payloads are sent/received at EC_LPC_ADDR_KERNEL|USER_PARAM. * On I2C, all bytes are sent serially in the same message. */ /* Current version of this protocol */ #define EC_PROTO_VERSION 0x00000002 /* Command version mask */ #define EC_VER_MASK(version) (1UL << (version)) /* I/O addresses for ACPI commands */ #define EC_LPC_ADDR_ACPI_DATA 0x62 #define EC_LPC_ADDR_ACPI_CMD 0x66 /* I/O addresses for host command */ #define EC_LPC_ADDR_HOST_DATA 0x200 #define EC_LPC_ADDR_HOST_CMD 0x204 /* I/O addresses for host command args and params */ #define EC_LPC_ADDR_HOST_ARGS 0x800 #define EC_LPC_ADDR_HOST_PARAM 0x804 #define EC_HOST_PARAM_SIZE 0x0fc /* Size of param area in bytes */ /* I/O addresses for host command params, old interface */ #define EC_LPC_ADDR_OLD_PARAM 0x880 #define EC_OLD_PARAM_SIZE 0x080 /* Size of param area in bytes */ /* EC command register bit functions */ #define EC_LPC_CMDR_DATA (1 << 0) /* Data ready for host to read */ #define EC_LPC_CMDR_PENDING (1 << 1) /* Write pending to EC */ #define EC_LPC_CMDR_BUSY (1 << 2) /* EC is busy processing a command */ #define EC_LPC_CMDR_CMD (1 << 3) /* Last host write was a command */ #define EC_LPC_CMDR_ACPI_BRST (1 << 4) /* Burst mode (not used) */ #define EC_LPC_CMDR_SCI (1 << 5) /* SCI event is pending */ #define EC_LPC_CMDR_SMI (1 << 6) /* SMI event is pending */ #define EC_LPC_ADDR_MEMMAP 0x900 #define EC_MEMMAP_SIZE 255 /* ACPI IO buffer max is 255 bytes */ #define EC_MEMMAP_TEXT_MAX 8 /* Size of a string in the memory map */ /* The offset address of each type of data in mapped memory. */ #define EC_MEMMAP_TEMP_SENSOR 0x00 /* Temp sensors */ #define EC_MEMMAP_FAN 0x10 /* Fan speeds */ #define EC_MEMMAP_TEMP_SENSOR_B 0x18 /* Temp sensors (second set) */ #define EC_MEMMAP_ID 0x20 /* 'E' 'C' */ #define EC_MEMMAP_ID_VERSION 0x22 /* Version of data in 0x20 - 0x2f */ #define EC_MEMMAP_THERMAL_VERSION 0x23 /* Version of data in 0x00 - 0x1f */ #define EC_MEMMAP_BATTERY_VERSION 0x24 /* Version of data in 0x40 - 0x7f */ #define EC_MEMMAP_SWITCHES_VERSION 0x25 /* Version of data in 0x30 - 0x33 */ #define EC_MEMMAP_EVENTS_VERSION 0x26 /* Version of data in 0x34 - 0x3f */ #define EC_MEMMAP_HOST_CMD_FLAGS 0x27 /* Host command interface flags */ #define EC_MEMMAP_SWITCHES 0x30 #define EC_MEMMAP_HOST_EVENTS 0x34 #define EC_MEMMAP_BATT_VOLT 0x40 /* Battery Present Voltage */ #define EC_MEMMAP_BATT_RATE 0x44 /* Battery Present Rate */ #define EC_MEMMAP_BATT_CAP 0x48 /* Battery Remaining Capacity */ #define EC_MEMMAP_BATT_FLAG 0x4c /* Battery State, defined below */ #define EC_MEMMAP_BATT_DCAP 0x50 /* Battery Design Capacity */ #define EC_MEMMAP_BATT_DVLT 0x54 /* Battery Design Voltage */ #define EC_MEMMAP_BATT_LFCC 0x58 /* Battery Last Full Charge Capacity */ #define EC_MEMMAP_BATT_CCNT 0x5c /* Battery Cycle Count */ #define EC_MEMMAP_BATT_MFGR 0x60 /* Battery Manufacturer String */ #define EC_MEMMAP_BATT_MODEL 0x68 /* Battery Model Number String */ #define EC_MEMMAP_BATT_SERIAL 0x70 /* Battery Serial Number String */ #define EC_MEMMAP_BATT_TYPE 0x78 /* Battery Type String */ /* Number of temp sensors at EC_MEMMAP_TEMP_SENSOR */ #define EC_TEMP_SENSOR_ENTRIES 16 /* * Number of temp sensors at EC_MEMMAP_TEMP_SENSOR_B. * * Valid only if EC_MEMMAP_THERMAL_VERSION returns >= 2. */ #define EC_TEMP_SENSOR_B_ENTRIES 8 #define EC_TEMP_SENSOR_NOT_PRESENT 0xff #define EC_TEMP_SENSOR_ERROR 0xfe #define EC_TEMP_SENSOR_NOT_POWERED 0xfd #define EC_TEMP_SENSOR_NOT_CALIBRATED 0xfc /* * The offset of temperature value stored in mapped memory. This allows * reporting a temperature range of 200K to 454K = -73C to 181C. */ #define EC_TEMP_SENSOR_OFFSET 200 #define EC_FAN_SPEED_ENTRIES 4 /* Number of fans at EC_MEMMAP_FAN */ #define EC_FAN_SPEED_NOT_PRESENT 0xffff /* Entry not present */ #define EC_FAN_SPEED_STALLED 0xfffe /* Fan stalled */ /* Battery bit flags at EC_MEMMAP_BATT_FLAG. */ #define EC_BATT_FLAG_AC_PRESENT 0x01 #define EC_BATT_FLAG_BATT_PRESENT 0x02 #define EC_BATT_FLAG_DISCHARGING 0x04 #define EC_BATT_FLAG_CHARGING 0x08 #define EC_BATT_FLAG_LEVEL_CRITICAL 0x10 /* Switch flags at EC_MEMMAP_SWITCHES */ #define EC_SWITCH_LID_OPEN 0x01 #define EC_SWITCH_POWER_BUTTON_PRESSED 0x02 #define EC_SWITCH_WRITE_PROTECT_DISABLED 0x04 /* Recovery requested via keyboard */ #define EC_SWITCH_KEYBOARD_RECOVERY 0x08 /* Recovery requested via dedicated signal (from servo board) */ #define EC_SWITCH_DEDICATED_RECOVERY 0x10 /* Was fake developer mode switch; now unused. Remove in next refactor. */ #define EC_SWITCH_IGNORE0 0x20 /* Host command interface flags */ /* Host command interface supports LPC args (LPC interface only) */ #define EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED 0x01 /* Wireless switch flags */ #define EC_WIRELESS_SWITCH_WLAN 0x01 #define EC_WIRELESS_SWITCH_BLUETOOTH 0x02 /* * This header file is used in coreboot both in C and ACPI code. The ACPI code * is pre-processed to handle constants but the ASL compiler is unable to * handle actual C code so keep it separate. */ #ifndef __ACPI__ /* LPC command status byte masks */ /* EC has written a byte in the data register and host hasn't read it yet */ #define EC_LPC_STATUS_TO_HOST 0x01 /* Host has written a command/data byte and the EC hasn't read it yet */ #define EC_LPC_STATUS_FROM_HOST 0x02 /* EC is processing a command */ #define EC_LPC_STATUS_PROCESSING 0x04 /* Last write to EC was a command, not data */ #define EC_LPC_STATUS_LAST_CMD 0x08 /* EC is in burst mode. Unsupported by Chrome EC, so this bit is never set */ #define EC_LPC_STATUS_BURST_MODE 0x10 /* SCI event is pending (requesting SCI query) */ #define EC_LPC_STATUS_SCI_PENDING 0x20 /* SMI event is pending (requesting SMI query) */ #define EC_LPC_STATUS_SMI_PENDING 0x40 /* (reserved) */ #define EC_LPC_STATUS_RESERVED 0x80 /* * EC is busy. This covers both the EC processing a command, and the host has * written a new command but the EC hasn't picked it up yet. */ #define EC_LPC_STATUS_BUSY_MASK \ (EC_LPC_STATUS_FROM_HOST | EC_LPC_STATUS_PROCESSING) /* Host command response codes */ enum ec_status { EC_RES_SUCCESS = 0, EC_RES_INVALID_COMMAND = 1, EC_RES_ERROR = 2, EC_RES_INVALID_PARAM = 3, EC_RES_ACCESS_DENIED = 4, EC_RES_INVALID_RESPONSE = 5, EC_RES_INVALID_VERSION = 6, EC_RES_INVALID_CHECKSUM = 7, EC_RES_IN_PROGRESS = 8, /* Accepted, command in progress */ EC_RES_UNAVAILABLE = 9, /* No response available */ EC_RES_TIMEOUT = 10, /* We got a timeout */ EC_RES_OVERFLOW = 11, /* Table / data overflow */ }; /* * Host event codes. Note these are 1-based, not 0-based, because ACPI query * EC command uses code 0 to mean "no event pending". We explicitly specify * each value in the enum listing so they won't change if we delete/insert an * item or rearrange the list (it needs to be stable across platforms, not * just within a single compiled instance). */ enum host_event_code { EC_HOST_EVENT_LID_CLOSED = 1, EC_HOST_EVENT_LID_OPEN = 2, EC_HOST_EVENT_POWER_BUTTON = 3, EC_HOST_EVENT_AC_CONNECTED = 4, EC_HOST_EVENT_AC_DISCONNECTED = 5, EC_HOST_EVENT_BATTERY_LOW = 6, EC_HOST_EVENT_BATTERY_CRITICAL = 7, EC_HOST_EVENT_BATTERY = 8, EC_HOST_EVENT_THERMAL_THRESHOLD = 9, EC_HOST_EVENT_THERMAL_OVERLOAD = 10, EC_HOST_EVENT_THERMAL = 11, EC_HOST_EVENT_USB_CHARGER = 12, EC_HOST_EVENT_KEY_PRESSED = 13, /* * EC has finished initializing the host interface. The host can check * for this event following sending a EC_CMD_REBOOT_EC command to * determine when the EC is ready to accept subsequent commands. */ EC_HOST_EVENT_INTERFACE_READY = 14, /* Keyboard recovery combo has been pressed */ EC_HOST_EVENT_KEYBOARD_RECOVERY = 15, /* Shutdown due to thermal overload */ EC_HOST_EVENT_THERMAL_SHUTDOWN = 16, /* Shutdown due to battery level too low */ EC_HOST_EVENT_BATTERY_SHUTDOWN = 17, /* * The high bit of the event mask is not used as a host event code. If * it reads back as set, then the entire event mask should be * considered invalid by the host. This can happen when reading the * raw event status via EC_MEMMAP_HOST_EVENTS but the LPC interface is * not initialized on the EC, or improperly configured on the host. */ EC_HOST_EVENT_INVALID = 32 }; /* Host event mask */ #define EC_HOST_EVENT_MASK(event_code) (1UL << ((event_code) - 1)) /* Arguments at EC_LPC_ADDR_HOST_ARGS */ struct ec_lpc_host_args { uint8_t flags; uint8_t command_version; uint8_t data_size; /* * Checksum; sum of command + flags + command_version + data_size + * all params/response data bytes. */ uint8_t checksum; } __packed; /* Flags for ec_lpc_host_args.flags */ /* * Args are from host. Data area at EC_LPC_ADDR_HOST_PARAM contains command * params. * * If EC gets a command and this flag is not set, this is an old-style command. * Command version is 0 and params from host are at EC_LPC_ADDR_OLD_PARAM with * unknown length. EC must respond with an old-style response (that is, * withouth setting EC_HOST_ARGS_FLAG_TO_HOST). */ #define EC_HOST_ARGS_FLAG_FROM_HOST 0x01 /* * Args are from EC. Data area at EC_LPC_ADDR_HOST_PARAM contains response. * * If EC responds to a command and this flag is not set, this is an old-style * response. Command version is 0 and response data from EC is at * EC_LPC_ADDR_OLD_PARAM with unknown length. */ #define EC_HOST_ARGS_FLAG_TO_HOST 0x02 /* * Notes on commands: * * Each command is an 8-byte command value. Commands which take params or * return response data specify structs for that data. If no struct is * specified, the command does not input or output data, respectively. * Parameter/response length is implicit in the structs. Some underlying * communication protocols (I2C, SPI) may add length or checksum headers, but * those are implementation-dependent and not defined here. */ /*****************************************************************************/ /* General / test commands */ /* * Get protocol version, used to deal with non-backward compatible protocol * changes. */ #define EC_CMD_PROTO_VERSION 0x00 struct ec_response_proto_version { uint32_t version; } __packed; /* * Hello. This is a simple command to test the EC is responsive to * commands. */ #define EC_CMD_HELLO 0x01 struct ec_params_hello { uint32_t in_data; /* Pass anything here */ } __packed; struct ec_response_hello { uint32_t out_data; /* Output will be in_data + 0x01020304 */ } __packed; /* Get version number */ #define EC_CMD_GET_VERSION 0x02 enum ec_current_image { EC_IMAGE_UNKNOWN = 0, EC_IMAGE_RO, EC_IMAGE_RW }; struct ec_response_get_version { /* Null-terminated version strings for RO, RW */ char version_string_ro[32]; char version_string_rw[32]; char reserved[32]; /* Was previously RW-B string */ uint32_t current_image; /* One of ec_current_image */ } __packed; /* Read test */ #define EC_CMD_READ_TEST 0x03 struct ec_params_read_test { uint32_t offset; /* Starting value for read buffer */ uint32_t size; /* Size to read in bytes */ } __packed; struct ec_response_read_test { uint32_t data[32]; } __packed; /* * Get build information * * Response is null-terminated string. */ #define EC_CMD_GET_BUILD_INFO 0x04 /* Get chip info */ #define EC_CMD_GET_CHIP_INFO 0x05 struct ec_response_get_chip_info { /* Null-terminated strings */ char vendor[32]; char name[32]; char revision[32]; /* Mask version */ } __packed; /* Get board HW version */ #define EC_CMD_GET_BOARD_VERSION 0x06 struct ec_response_board_version { uint16_t board_version; /* A monotonously incrementing number. */ } __packed; /* * Read memory-mapped data. * * This is an alternate interface to memory-mapped data for bus protocols * which don't support direct-mapped memory - I2C, SPI, etc. * * Response is params.size bytes of data. */ #define EC_CMD_READ_MEMMAP 0x07 struct ec_params_read_memmap { uint8_t offset; /* Offset in memmap (EC_MEMMAP_*) */ uint8_t size; /* Size to read in bytes */ } __packed; /* Read versions supported for a command */ #define EC_CMD_GET_CMD_VERSIONS 0x08 struct ec_params_get_cmd_versions { uint8_t cmd; /* Command to check */ } __packed; struct ec_response_get_cmd_versions { /* * Mask of supported versions; use EC_VER_MASK() to compare with a * desired version. */ uint32_t version_mask; } __packed; /* * Check EC communcations status (busy). This is needed on i2c/spi but not * on lpc since it has its own out-of-band busy indicator. * * lpc must read the status from the command register. Attempting this on * lpc will overwrite the args/parameter space and corrupt its data. */ #define EC_CMD_GET_COMMS_STATUS 0x09 /* Avoid using ec_status which is for return values */ enum ec_comms_status { EC_COMMS_STATUS_PROCESSING = 1 << 0, /* Processing cmd */ }; struct ec_response_get_comms_status { uint32_t flags; /* Mask of enum ec_comms_status */ } __packed; /*****************************************************************************/ /* Flash commands */ /* Get flash info */ #define EC_CMD_FLASH_INFO 0x10 struct ec_response_flash_info { /* Usable flash size, in bytes */ uint32_t flash_size; /* * Write block size. Write offset and size must be a multiple * of this. */ uint32_t write_block_size; /* * Erase block size. Erase offset and size must be a multiple * of this. */ uint32_t erase_block_size; /* * Protection block size. Protection offset and size must be a * multiple of this. */ uint32_t protect_block_size; } __packed; /* * Read flash * * Response is params.size bytes of data. */ #define EC_CMD_FLASH_READ 0x11 struct ec_params_flash_read { uint32_t offset; /* Byte offset to read */ uint32_t size; /* Size to read in bytes */ } __packed; /* Write flash */ #define EC_CMD_FLASH_WRITE 0x12 struct ec_params_flash_write { uint32_t offset; /* Byte offset to write */ uint32_t size; /* Size to write in bytes */ /* * Data to write. Could really use EC_PARAM_SIZE - 8, but tidiest to * use a power of 2 so writes stay aligned. */ uint8_t data[64]; } __packed; /* Erase flash */ #define EC_CMD_FLASH_ERASE 0x13 struct ec_params_flash_erase { uint32_t offset; /* Byte offset to erase */ uint32_t size; /* Size to erase in bytes */ } __packed; /* * Get/set flash protection. * * If mask!=0, sets/clear the requested bits of flags. Depending on the * firmware write protect GPIO, not all flags will take effect immediately; * some flags require a subsequent hard reset to take effect. Check the * returned flags bits to see what actually happened. * * If mask=0, simply returns the current flags state. */ #define EC_CMD_FLASH_PROTECT 0x15 #define EC_VER_FLASH_PROTECT 1 /* Command version 1 */ /* Flags for flash protection */ /* RO flash code protected when the EC boots */ #define EC_FLASH_PROTECT_RO_AT_BOOT (1 << 0) /* * RO flash code protected now. If this bit is set, at-boot status cannot * be changed. */ #define EC_FLASH_PROTECT_RO_NOW (1 << 1) /* Entire flash code protected now, until reboot. */ #define EC_FLASH_PROTECT_ALL_NOW (1 << 2) /* Flash write protect GPIO is asserted now */ #define EC_FLASH_PROTECT_GPIO_ASSERTED (1 << 3) /* Error - at least one bank of flash is stuck locked, and cannot be unlocked */ #define EC_FLASH_PROTECT_ERROR_STUCK (1 << 4) /* * Error - flash protection is in inconsistent state. At least one bank of * flash which should be protected is not protected. Usually fixed by * re-requesting the desired flags, or by a hard reset if that fails. */ #define EC_FLASH_PROTECT_ERROR_INCONSISTENT (1 << 5) /* Entile flash code protected when the EC boots */ #define EC_FLASH_PROTECT_ALL_AT_BOOT (1 << 6) struct ec_params_flash_protect { uint32_t mask; /* Bits in flags to apply */ uint32_t flags; /* New flags to apply */ } __packed; struct ec_response_flash_protect { /* Current value of flash protect flags */ uint32_t flags; /* * Flags which are valid on this platform. This allows the caller * to distinguish between flags which aren't set vs. flags which can't * be set on this platform. */ uint32_t valid_flags; /* Flags which can be changed given the current protection state */ uint32_t writable_flags; } __packed; /* * Note: commands 0x14 - 0x19 version 0 were old commands to get/set flash * write protect. These commands may be reused with version > 0. */ /* Get the region offset/size */ #define EC_CMD_FLASH_REGION_INFO 0x16 #define EC_VER_FLASH_REGION_INFO 1 enum ec_flash_region { /* Region which holds read-only EC image */ EC_FLASH_REGION_RO, /* Region which holds rewritable EC image */ EC_FLASH_REGION_RW, /* * Region which should be write-protected in the factory (a superset of * EC_FLASH_REGION_RO) */ EC_FLASH_REGION_WP_RO, }; struct ec_params_flash_region_info { uint32_t region; /* enum ec_flash_region */ } __packed; struct ec_response_flash_region_info { uint32_t offset; uint32_t size; } __packed; /* Read/write VbNvContext */ #define EC_CMD_VBNV_CONTEXT 0x17 #define EC_VER_VBNV_CONTEXT 1 #define EC_VBNV_BLOCK_SIZE 16 enum ec_vbnvcontext_op { EC_VBNV_CONTEXT_OP_READ, EC_VBNV_CONTEXT_OP_WRITE, }; struct ec_params_vbnvcontext { uint32_t op; uint8_t block[EC_VBNV_BLOCK_SIZE]; } __packed; struct ec_response_vbnvcontext { uint8_t block[EC_VBNV_BLOCK_SIZE]; } __packed; /*****************************************************************************/ /* PWM commands */ /* Get fan target RPM */ #define EC_CMD_PWM_GET_FAN_TARGET_RPM 0x20 struct ec_response_pwm_get_fan_rpm { uint32_t rpm; } __packed; /* Set target fan RPM */ #define EC_CMD_PWM_SET_FAN_TARGET_RPM 0x21 struct ec_params_pwm_set_fan_target_rpm { uint32_t rpm; } __packed; /* Get keyboard backlight */ #define EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT 0x22 struct ec_response_pwm_get_keyboard_backlight { uint8_t percent; uint8_t enabled; } __packed; /* Set keyboard backlight */ #define EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT 0x23 struct ec_params_pwm_set_keyboard_backlight { uint8_t percent; } __packed; /* Set target fan PWM duty cycle */ #define EC_CMD_PWM_SET_FAN_DUTY 0x24 struct ec_params_pwm_set_fan_duty { uint32_t percent; } __packed; /*****************************************************************************/ /* * Lightbar commands. This looks worse than it is. Since we only use one HOST * command to say "talk to the lightbar", we put the "and tell it to do X" part * into a subcommand. We'll make separate structs for subcommands with * different input args, so that we know how much to expect. */ #define EC_CMD_LIGHTBAR_CMD 0x28 struct rgb_s { uint8_t r, g, b; }; #define LB_BATTERY_LEVELS 4 /* List of tweakable parameters. NOTE: It's __packed so it can be sent in a * host command, but the alignment is the same regardless. Keep it that way. */ struct lightbar_params { /* Timing */ int google_ramp_up; int google_ramp_down; int s3s0_ramp_up; int s0_tick_delay[2]; /* AC=0/1 */ int s0a_tick_delay[2]; /* AC=0/1 */ int s0s3_ramp_down; int s3_sleep_for; int s3_ramp_up; int s3_ramp_down; /* Oscillation */ uint8_t new_s0; uint8_t osc_min[2]; /* AC=0/1 */ uint8_t osc_max[2]; /* AC=0/1 */ uint8_t w_ofs[2]; /* AC=0/1 */ /* Brightness limits based on the backlight and AC. */ uint8_t bright_bl_off_fixed[2]; /* AC=0/1 */ uint8_t bright_bl_on_min[2]; /* AC=0/1 */ uint8_t bright_bl_on_max[2]; /* AC=0/1 */ /* Battery level thresholds */ uint8_t battery_threshold[LB_BATTERY_LEVELS - 1]; /* Map [AC][battery_level] to color index */ uint8_t s0_idx[2][LB_BATTERY_LEVELS]; /* AP is running */ uint8_t s3_idx[2][LB_BATTERY_LEVELS]; /* AP is sleeping */ /* Color palette */ struct rgb_s color[8]; /* 0-3 are Google colors */ } __packed; struct ec_params_lightbar { uint8_t cmd; /* Command (see enum lightbar_command) */ union { struct { /* no args */ } dump, off, on, init, get_seq, get_params; struct num { uint8_t num; } brightness, seq, demo; struct reg { uint8_t ctrl, reg, value; } reg; struct rgb { uint8_t led, red, green, blue; } rgb; struct lightbar_params set_params; }; } __packed; struct ec_response_lightbar { union { struct dump { struct { uint8_t reg; uint8_t ic0; uint8_t ic1; } vals[23]; } dump; struct get_seq { uint8_t num; } get_seq; struct lightbar_params get_params; struct { /* no return params */ } off, on, init, brightness, seq, reg, rgb, demo, set_params; }; } __packed; /* Lightbar commands */ enum lightbar_command { LIGHTBAR_CMD_DUMP = 0, LIGHTBAR_CMD_OFF = 1, LIGHTBAR_CMD_ON = 2, LIGHTBAR_CMD_INIT = 3, LIGHTBAR_CMD_BRIGHTNESS = 4, LIGHTBAR_CMD_SEQ = 5, LIGHTBAR_CMD_REG = 6, LIGHTBAR_CMD_RGB = 7, LIGHTBAR_CMD_GET_SEQ = 8, LIGHTBAR_CMD_DEMO = 9, LIGHTBAR_CMD_GET_PARAMS = 10, LIGHTBAR_CMD_SET_PARAMS = 11, LIGHTBAR_NUM_CMDS }; /*****************************************************************************/ /* Verified boot commands */ /* * Note: command code 0x29 version 0 was VBOOT_CMD in Link EVT; it may be * reused for other purposes with version > 0. */ /* Verified boot hash command */ #define EC_CMD_VBOOT_HASH 0x2A struct ec_params_vboot_hash { uint8_t cmd; /* enum ec_vboot_hash_cmd */ uint8_t hash_type; /* enum ec_vboot_hash_type */ uint8_t nonce_size; /* Nonce size; may be 0 */ uint8_t reserved0; /* Reserved; set 0 */ uint32_t offset; /* Offset in flash to hash */ uint32_t size; /* Number of bytes to hash */ uint8_t nonce_data[64]; /* Nonce data; ignored if nonce_size=0 */ } __packed; struct ec_response_vboot_hash { uint8_t status; /* enum ec_vboot_hash_status */ uint8_t hash_type; /* enum ec_vboot_hash_type */ uint8_t digest_size; /* Size of hash digest in bytes */ uint8_t reserved0; /* Ignore; will be 0 */ uint32_t offset; /* Offset in flash which was hashed */ uint32_t size; /* Number of bytes hashed */ uint8_t hash_digest[64]; /* Hash digest data */ } __packed; enum ec_vboot_hash_cmd { EC_VBOOT_HASH_GET = 0, /* Get current hash status */ EC_VBOOT_HASH_ABORT = 1, /* Abort calculating current hash */ EC_VBOOT_HASH_START = 2, /* Start computing a new hash */ EC_VBOOT_HASH_RECALC = 3, /* Synchronously compute a new hash */ }; enum ec_vboot_hash_type { EC_VBOOT_HASH_TYPE_SHA256 = 0, /* SHA-256 */ }; enum ec_vboot_hash_status { EC_VBOOT_HASH_STATUS_NONE = 0, /* No hash (not started, or aborted) */ EC_VBOOT_HASH_STATUS_DONE = 1, /* Finished computing a hash */ EC_VBOOT_HASH_STATUS_BUSY = 2, /* Busy computing a hash */ }; /* * Special values for offset for EC_VBOOT_HASH_START and EC_VBOOT_HASH_RECALC. * If one of these is specified, the EC will automatically update offset and * size to the correct values for the specified image (RO or RW). */ #define EC_VBOOT_HASH_OFFSET_RO 0xfffffffe #define EC_VBOOT_HASH_OFFSET_RW 0xfffffffd /*****************************************************************************/ /* USB charging control commands */ /* Set USB port charging mode */ #define EC_CMD_USB_CHARGE_SET_MODE 0x30 struct ec_params_usb_charge_set_mode { uint8_t usb_port_id; uint8_t mode; } __packed; /*****************************************************************************/ /* Persistent storage for host */ /* Maximum bytes that can be read/written in a single command */ #define EC_PSTORE_SIZE_MAX 64 /* Get persistent storage info */ #define EC_CMD_PSTORE_INFO 0x40 struct ec_response_pstore_info { /* Persistent storage size, in bytes */ uint32_t pstore_size; /* Access size; read/write offset and size must be a multiple of this */ uint32_t access_size; } __packed; /* * Read persistent storage * * Response is params.size bytes of data. */ #define EC_CMD_PSTORE_READ 0x41 struct ec_params_pstore_read { uint32_t offset; /* Byte offset to read */ uint32_t size; /* Size to read in bytes */ } __packed; /* Write persistent storage */ #define EC_CMD_PSTORE_WRITE 0x42 struct ec_params_pstore_write { uint32_t offset; /* Byte offset to write */ uint32_t size; /* Size to write in bytes */ uint8_t data[EC_PSTORE_SIZE_MAX]; } __packed; /*****************************************************************************/ /* Real-time clock */ /* RTC params and response structures */ struct ec_params_rtc { uint32_t time; } __packed; struct ec_response_rtc { uint32_t time; } __packed; /* These use ec_response_rtc */ #define EC_CMD_RTC_GET_VALUE 0x44 #define EC_CMD_RTC_GET_ALARM 0x45 /* These all use ec_params_rtc */ #define EC_CMD_RTC_SET_VALUE 0x46 #define EC_CMD_RTC_SET_ALARM 0x47 /*****************************************************************************/ /* Port80 log access */ /* Get last port80 code from previous boot */ #define EC_CMD_PORT80_LAST_BOOT 0x48 struct ec_response_port80_last_boot { uint16_t code; } __packed; /*****************************************************************************/ /* Thermal engine commands */ /* Set thershold value */ #define EC_CMD_THERMAL_SET_THRESHOLD 0x50 struct ec_params_thermal_set_threshold { uint8_t sensor_type; uint8_t threshold_id; uint16_t value; } __packed; /* Get threshold value */ #define EC_CMD_THERMAL_GET_THRESHOLD 0x51 struct ec_params_thermal_get_threshold { uint8_t sensor_type; uint8_t threshold_id; } __packed; struct ec_response_thermal_get_threshold { uint16_t value; } __packed; /* Toggle automatic fan control */ #define EC_CMD_THERMAL_AUTO_FAN_CTRL 0x52 /* Get TMP006 calibration data */ #define EC_CMD_TMP006_GET_CALIBRATION 0x53 struct ec_params_tmp006_get_calibration { uint8_t index; } __packed; struct ec_response_tmp006_get_calibration { float s0; float b0; float b1; float b2; } __packed; /* Set TMP006 calibration data */ #define EC_CMD_TMP006_SET_CALIBRATION 0x54 struct ec_params_tmp006_set_calibration { uint8_t index; uint8_t reserved[3]; /* Reserved; set 0 */ float s0; float b0; float b1; float b2; } __packed; /*****************************************************************************/ /* MKBP - Matrix KeyBoard Protocol */ /* * Read key state * * Returns raw data for keyboard cols; see ec_response_mkbp_info.cols for * expected response size. */ #define EC_CMD_MKBP_STATE 0x60 /* Provide information about the matrix : number of rows and columns */ #define EC_CMD_MKBP_INFO 0x61 struct ec_response_mkbp_info { uint32_t rows; uint32_t cols; uint8_t switches; } __packed; /* Simulate key press */ #define EC_CMD_MKBP_SIMULATE_KEY 0x62 struct ec_params_mkbp_simulate_key { uint8_t col; uint8_t row; uint8_t pressed; } __packed; /* Configure keyboard scanning */ #define EC_CMD_MKBP_SET_CONFIG 0x64 #define EC_CMD_MKBP_GET_CONFIG 0x65 /* flags */ enum mkbp_config_flags { EC_MKBP_FLAGS_ENABLE = 1, /* Enable keyboard scanning */ }; enum mkbp_config_valid { EC_MKBP_VALID_SCAN_PERIOD = 1 << 0, EC_MKBP_VALID_POLL_TIMEOUT = 1 << 1, EC_MKBP_VALID_MIN_POST_SCAN_DELAY = 1 << 3, EC_MKBP_VALID_OUTPUT_SETTLE = 1 << 4, EC_MKBP_VALID_DEBOUNCE_DOWN = 1 << 5, EC_MKBP_VALID_DEBOUNCE_UP = 1 << 6, EC_MKBP_VALID_FIFO_MAX_DEPTH = 1 << 7, }; /* Configuration for our key scanning algorithm */ struct ec_mkbp_config { uint32_t valid_mask; /* valid fields */ uint8_t flags; /* some flags (enum mkbp_config_flags) */ uint8_t valid_flags; /* which flags are valid */ uint16_t scan_period_us; /* period between start of scans */ /* revert to interrupt mode after no activity for this long */ uint32_t poll_timeout_us; /* * minimum post-scan relax time. Once we finish a scan we check * the time until we are due to start the next one. If this time is * shorter this field, we use this instead. */ uint16_t min_post_scan_delay_us; /* delay between setting up output and waiting for it to settle */ uint16_t output_settle_us; uint16_t debounce_down_us; /* time for debounce on key down */ uint16_t debounce_up_us; /* time for debounce on key up */ /* maximum depth to allow for fifo (0 = no keyscan output) */ uint8_t fifo_max_depth; } __packed; struct ec_params_mkbp_set_config { struct ec_mkbp_config config; } __packed; struct ec_response_mkbp_get_config { struct ec_mkbp_config config; } __packed; /* Run the key scan emulation */ #define EC_CMD_KEYSCAN_SEQ_CTRL 0x66 enum ec_keyscan_seq_cmd { EC_KEYSCAN_SEQ_STATUS = 0, /* Get status information */ EC_KEYSCAN_SEQ_CLEAR = 1, /* Clear sequence */ EC_KEYSCAN_SEQ_ADD = 2, /* Add item to sequence */ EC_KEYSCAN_SEQ_START = 3, /* Start running sequence */ EC_KEYSCAN_SEQ_COLLECT = 4, /* Collect sequence summary data */ }; enum ec_collect_flags { /* * Indicates this scan was processed by the EC. Due to timing, some * scans may be skipped. */ EC_KEYSCAN_SEQ_FLAG_DONE = 1 << 0, }; struct ec_collect_item { uint8_t flags; /* some flags (enum ec_collect_flags) */ }; struct ec_params_keyscan_seq_ctrl { uint8_t cmd; /* Command to send (enum ec_keyscan_seq_cmd) */ union { struct { uint8_t active; /* still active */ uint8_t num_items; /* number of items */ /* Current item being presented */ uint8_t cur_item; } status; struct { /* * Absolute time for this scan, measured from the * start of the sequence. */ uint32_t time_us; uint8_t scan[0]; /* keyscan data */ } add; struct { uint8_t start_item; /* First item to return */ uint8_t num_items; /* Number of items to return */ } collect; }; } __packed; struct ec_result_keyscan_seq_ctrl { union { struct { uint8_t num_items; /* Number of items */ /* Data for each item */ struct ec_collect_item item[0]; } collect; }; } __packed; /*****************************************************************************/ /* Temperature sensor commands */ /* Read temperature sensor info */ #define EC_CMD_TEMP_SENSOR_GET_INFO 0x70 struct ec_params_temp_sensor_get_info { uint8_t id; } __packed; struct ec_response_temp_sensor_get_info { char sensor_name[32]; uint8_t sensor_type; } __packed; /*****************************************************************************/ /* * Note: host commands 0x80 - 0x87 are reserved to avoid conflict with ACPI * commands accidentally sent to the wrong interface. See the ACPI section * below. */ /*****************************************************************************/ /* Host event commands */ /* * Host event mask params and response structures, shared by all of the host * event commands below. */ struct ec_params_host_event_mask { uint32_t mask; } __packed; struct ec_response_host_event_mask { uint32_t mask; } __packed; /* These all use ec_response_host_event_mask */ #define EC_CMD_HOST_EVENT_GET_B 0x87 #define EC_CMD_HOST_EVENT_GET_SMI_MASK 0x88 #define EC_CMD_HOST_EVENT_GET_SCI_MASK 0x89 #define EC_CMD_HOST_EVENT_GET_WAKE_MASK 0x8d /* These all use ec_params_host_event_mask */ #define EC_CMD_HOST_EVENT_SET_SMI_MASK 0x8a #define EC_CMD_HOST_EVENT_SET_SCI_MASK 0x8b #define EC_CMD_HOST_EVENT_CLEAR 0x8c #define EC_CMD_HOST_EVENT_SET_WAKE_MASK 0x8e #define EC_CMD_HOST_EVENT_CLEAR_B 0x8f /*****************************************************************************/ /* Switch commands */ /* Enable/disable LCD backlight */ #define EC_CMD_SWITCH_ENABLE_BKLIGHT 0x90 struct ec_params_switch_enable_backlight { uint8_t enabled; } __packed; /* Enable/disable WLAN/Bluetooth */ #define EC_CMD_SWITCH_ENABLE_WIRELESS 0x91 struct ec_params_switch_enable_wireless { uint8_t enabled; } __packed; /*****************************************************************************/ /* GPIO commands. Only available on EC if write protect has been disabled. */ /* Set GPIO output value */ #define EC_CMD_GPIO_SET 0x92 struct ec_params_gpio_set { char name[32]; uint8_t val; } __packed; /* Get GPIO value */ #define EC_CMD_GPIO_GET 0x93 struct ec_params_gpio_get { char name[32]; } __packed; struct ec_response_gpio_get { uint8_t val; } __packed; /*****************************************************************************/ /* I2C commands. Only available when flash write protect is unlocked. */ /* Read I2C bus */ #define EC_CMD_I2C_READ 0x94 struct ec_params_i2c_read { uint16_t addr; uint8_t read_size; /* Either 8 or 16. */ uint8_t port; uint8_t offset; } __packed; struct ec_response_i2c_read { uint16_t data; } __packed; /* Write I2C bus */ #define EC_CMD_I2C_WRITE 0x95 struct ec_params_i2c_write { uint16_t data; uint16_t addr; uint8_t write_size; /* Either 8 or 16. */ uint8_t port; uint8_t offset; } __packed; /*****************************************************************************/ /* Charge state commands. Only available when flash write protect unlocked. */ /* Force charge state machine to stop in idle mode */ #define EC_CMD_CHARGE_FORCE_IDLE 0x96 struct ec_params_force_idle { uint8_t enabled; } __packed; /*****************************************************************************/ /* Console commands. Only available when flash write protect is unlocked. */ /* Snapshot console output buffer for use by EC_CMD_CONSOLE_READ. */ #define EC_CMD_CONSOLE_SNAPSHOT 0x97 /* * Read next chunk of data from saved snapshot. * * Response is null-terminated string. Empty string, if there is no more * remaining output. */ #define EC_CMD_CONSOLE_READ 0x98 /*****************************************************************************/ /* * Cut off battery power output if the battery supports. * * For unsupported battery, just don't implement this command and lets EC * return EC_RES_INVALID_COMMAND. */ #define EC_CMD_BATTERY_CUT_OFF 0x99 /*****************************************************************************/ /* Temporary debug commands. TODO: remove this crosbug.com/p/13849 */ /* * Dump charge state machine context. * * Response is a binary dump of charge state machine context. */ #define EC_CMD_CHARGE_DUMP 0xa0 /* * Set maximum battery charging current. */ #define EC_CMD_CHARGE_CURRENT_LIMIT 0xa1 struct ec_params_current_limit { uint32_t limit; } __packed; /*****************************************************************************/ /* System commands */ /* * TODO: this is a confusing name, since it doesn't necessarily reboot the EC. * Rename to "set image" or something similar. */ #define EC_CMD_REBOOT_EC 0xd2 /* Command */ enum ec_reboot_cmd { EC_REBOOT_CANCEL = 0, /* Cancel a pending reboot */ EC_REBOOT_JUMP_RO = 1, /* Jump to RO without rebooting */ EC_REBOOT_JUMP_RW = 2, /* Jump to RW without rebooting */ /* (command 3 was jump to RW-B) */ EC_REBOOT_COLD = 4, /* Cold-reboot */ EC_REBOOT_DISABLE_JUMP = 5, /* Disable jump until next reboot */ EC_REBOOT_HIBERNATE = 6 /* Hibernate EC */ }; /* Flags for ec_params_reboot_ec.reboot_flags */ #define EC_REBOOT_FLAG_RESERVED0 (1 << 0) /* Was recovery request */ #define EC_REBOOT_FLAG_ON_AP_SHUTDOWN (1 << 1) /* Reboot after AP shutdown */ struct ec_params_reboot_ec { uint8_t cmd; /* enum ec_reboot_cmd */ uint8_t flags; /* See EC_REBOOT_FLAG_* */ } __packed; /* * Get information on last EC panic. * * Returns variable-length platform-dependent panic information. See panic.h * for details. */ #define EC_CMD_GET_PANIC_INFO 0xd3 /*****************************************************************************/ /* * ACPI commands * * These are valid ONLY on the ACPI command/data port. */ /* * ACPI Read Embedded Controller * * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*). * * Use the following sequence: * * - Write EC_CMD_ACPI_READ to EC_LPC_ADDR_ACPI_CMD * - Wait for EC_LPC_CMDR_PENDING bit to clear * - Write address to EC_LPC_ADDR_ACPI_DATA * - Wait for EC_LPC_CMDR_DATA bit to set * - Read value from EC_LPC_ADDR_ACPI_DATA */ #define EC_CMD_ACPI_READ 0x80 /* * ACPI Write Embedded Controller * * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*). * * Use the following sequence: * * - Write EC_CMD_ACPI_WRITE to EC_LPC_ADDR_ACPI_CMD * - Wait for EC_LPC_CMDR_PENDING bit to clear * - Write address to EC_LPC_ADDR_ACPI_DATA * - Wait for EC_LPC_CMDR_PENDING bit to clear * - Write value to EC_LPC_ADDR_ACPI_DATA */ #define EC_CMD_ACPI_WRITE 0x81 /* * ACPI Query Embedded Controller * * This clears the lowest-order bit in the currently pending host events, and * sets the result code to the 1-based index of the bit (event 0x00000001 = 1, * event 0x80000000 = 32), or 0 if no event was pending. */ #define EC_CMD_ACPI_QUERY_EVENT 0x84 /* Valid addresses in ACPI memory space, for read/write commands */ /* Memory space version; set to EC_ACPI_MEM_VERSION_CURRENT */ #define EC_ACPI_MEM_VERSION 0x00 /* * Test location; writing value here updates test compliment byte to (0xff - * value). */ #define EC_ACPI_MEM_TEST 0x01 /* Test compliment; writes here are ignored. */ #define EC_ACPI_MEM_TEST_COMPLIMENT 0x02 /* Keyboard backlight brightness percent (0 - 100) */ #define EC_ACPI_MEM_KEYBOARD_BACKLIGHT 0x03 /* Current version of ACPI memory address space */ #define EC_ACPI_MEM_VERSION_CURRENT 1 /*****************************************************************************/ /* * Special commands * * These do not follow the normal rules for commands. See each command for * details. */ /* * Reboot NOW * * This command will work even when the EC LPC interface is busy, because the * reboot command is processed at interrupt level. Note that when the EC * reboots, the host will reboot too, so there is no response to this command. * * Use EC_CMD_REBOOT_EC to reboot the EC more politely. */ #define EC_CMD_REBOOT 0xd1 /* Think "die" */ /* * Resend last response (not supported on LPC). * * Returns EC_RES_UNAVAILABLE if there is no response available - for example, * there was no previous command, or the previous command's response was too * big to save. */ #define EC_CMD_RESEND_RESPONSE 0xdb /* * This header byte on a command indicate version 0. Any header byte less * than this means that we are talking to an old EC which doesn't support * versioning. In that case, we assume version 0. * * Header bytes greater than this indicate a later version. For example, * EC_CMD_VERSION0 + 1 means we are using version 1. * * The old EC interface must not use commands 0dc or higher. */ #define EC_CMD_VERSION0 0xdc #endif /* !__ACPI__ */ #endif /* __CROS_EC_COMMANDS_H */