1370 lines
40 KiB
C
1370 lines
40 KiB
C
/*
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* Host communication command constants for ChromeOS EC
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*
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* Copyright (C) 2012 Google, Inc
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* The ChromeOS EC multi function device is used to mux all the requests
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* to the EC device for its multiple features: keyboard controller,
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* battery charging and regulator control, firmware update.
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*
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* NOTE: This file is copied verbatim from the ChromeOS EC Open Source
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* project in an attempt to make future updates easy to make.
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*/
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#ifndef __CROS_EC_COMMANDS_H
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#define __CROS_EC_COMMANDS_H
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/*
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* Protocol overview
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*
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* request: CMD [ P0 P1 P2 ... Pn S ]
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* response: ERR [ P0 P1 P2 ... Pn S ]
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*
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* where the bytes are defined as follow :
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* - CMD is the command code. (defined by EC_CMD_ constants)
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* - ERR is the error code. (defined by EC_RES_ constants)
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* - Px is the optional payload.
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* it is not sent if the error code is not success.
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* (defined by ec_params_ and ec_response_ structures)
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* - S is the checksum which is the sum of all payload bytes.
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*
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* On LPC, CMD and ERR are sent/received at EC_LPC_ADDR_KERNEL|USER_CMD
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* and the payloads are sent/received at EC_LPC_ADDR_KERNEL|USER_PARAM.
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* On I2C, all bytes are sent serially in the same message.
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*/
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/* Current version of this protocol */
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#define EC_PROTO_VERSION 0x00000002
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/* Command version mask */
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#define EC_VER_MASK(version) (1UL << (version))
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/* I/O addresses for ACPI commands */
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#define EC_LPC_ADDR_ACPI_DATA 0x62
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#define EC_LPC_ADDR_ACPI_CMD 0x66
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/* I/O addresses for host command */
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#define EC_LPC_ADDR_HOST_DATA 0x200
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#define EC_LPC_ADDR_HOST_CMD 0x204
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/* I/O addresses for host command args and params */
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#define EC_LPC_ADDR_HOST_ARGS 0x800
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#define EC_LPC_ADDR_HOST_PARAM 0x804
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#define EC_HOST_PARAM_SIZE 0x0fc /* Size of param area in bytes */
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/* I/O addresses for host command params, old interface */
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#define EC_LPC_ADDR_OLD_PARAM 0x880
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#define EC_OLD_PARAM_SIZE 0x080 /* Size of param area in bytes */
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/* EC command register bit functions */
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#define EC_LPC_CMDR_DATA (1 << 0) /* Data ready for host to read */
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#define EC_LPC_CMDR_PENDING (1 << 1) /* Write pending to EC */
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#define EC_LPC_CMDR_BUSY (1 << 2) /* EC is busy processing a command */
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#define EC_LPC_CMDR_CMD (1 << 3) /* Last host write was a command */
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#define EC_LPC_CMDR_ACPI_BRST (1 << 4) /* Burst mode (not used) */
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#define EC_LPC_CMDR_SCI (1 << 5) /* SCI event is pending */
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#define EC_LPC_CMDR_SMI (1 << 6) /* SMI event is pending */
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#define EC_LPC_ADDR_MEMMAP 0x900
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#define EC_MEMMAP_SIZE 255 /* ACPI IO buffer max is 255 bytes */
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#define EC_MEMMAP_TEXT_MAX 8 /* Size of a string in the memory map */
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/* The offset address of each type of data in mapped memory. */
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#define EC_MEMMAP_TEMP_SENSOR 0x00 /* Temp sensors */
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#define EC_MEMMAP_FAN 0x10 /* Fan speeds */
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#define EC_MEMMAP_TEMP_SENSOR_B 0x18 /* Temp sensors (second set) */
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#define EC_MEMMAP_ID 0x20 /* 'E' 'C' */
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#define EC_MEMMAP_ID_VERSION 0x22 /* Version of data in 0x20 - 0x2f */
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#define EC_MEMMAP_THERMAL_VERSION 0x23 /* Version of data in 0x00 - 0x1f */
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#define EC_MEMMAP_BATTERY_VERSION 0x24 /* Version of data in 0x40 - 0x7f */
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#define EC_MEMMAP_SWITCHES_VERSION 0x25 /* Version of data in 0x30 - 0x33 */
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#define EC_MEMMAP_EVENTS_VERSION 0x26 /* Version of data in 0x34 - 0x3f */
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#define EC_MEMMAP_HOST_CMD_FLAGS 0x27 /* Host command interface flags */
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#define EC_MEMMAP_SWITCHES 0x30
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#define EC_MEMMAP_HOST_EVENTS 0x34
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#define EC_MEMMAP_BATT_VOLT 0x40 /* Battery Present Voltage */
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#define EC_MEMMAP_BATT_RATE 0x44 /* Battery Present Rate */
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#define EC_MEMMAP_BATT_CAP 0x48 /* Battery Remaining Capacity */
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#define EC_MEMMAP_BATT_FLAG 0x4c /* Battery State, defined below */
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#define EC_MEMMAP_BATT_DCAP 0x50 /* Battery Design Capacity */
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#define EC_MEMMAP_BATT_DVLT 0x54 /* Battery Design Voltage */
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#define EC_MEMMAP_BATT_LFCC 0x58 /* Battery Last Full Charge Capacity */
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#define EC_MEMMAP_BATT_CCNT 0x5c /* Battery Cycle Count */
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#define EC_MEMMAP_BATT_MFGR 0x60 /* Battery Manufacturer String */
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#define EC_MEMMAP_BATT_MODEL 0x68 /* Battery Model Number String */
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#define EC_MEMMAP_BATT_SERIAL 0x70 /* Battery Serial Number String */
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#define EC_MEMMAP_BATT_TYPE 0x78 /* Battery Type String */
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/* Number of temp sensors at EC_MEMMAP_TEMP_SENSOR */
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#define EC_TEMP_SENSOR_ENTRIES 16
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/*
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* Number of temp sensors at EC_MEMMAP_TEMP_SENSOR_B.
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*
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* Valid only if EC_MEMMAP_THERMAL_VERSION returns >= 2.
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*/
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#define EC_TEMP_SENSOR_B_ENTRIES 8
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#define EC_TEMP_SENSOR_NOT_PRESENT 0xff
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#define EC_TEMP_SENSOR_ERROR 0xfe
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#define EC_TEMP_SENSOR_NOT_POWERED 0xfd
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#define EC_TEMP_SENSOR_NOT_CALIBRATED 0xfc
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/*
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* The offset of temperature value stored in mapped memory. This allows
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* reporting a temperature range of 200K to 454K = -73C to 181C.
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*/
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#define EC_TEMP_SENSOR_OFFSET 200
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#define EC_FAN_SPEED_ENTRIES 4 /* Number of fans at EC_MEMMAP_FAN */
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#define EC_FAN_SPEED_NOT_PRESENT 0xffff /* Entry not present */
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#define EC_FAN_SPEED_STALLED 0xfffe /* Fan stalled */
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/* Battery bit flags at EC_MEMMAP_BATT_FLAG. */
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#define EC_BATT_FLAG_AC_PRESENT 0x01
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#define EC_BATT_FLAG_BATT_PRESENT 0x02
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#define EC_BATT_FLAG_DISCHARGING 0x04
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#define EC_BATT_FLAG_CHARGING 0x08
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#define EC_BATT_FLAG_LEVEL_CRITICAL 0x10
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/* Switch flags at EC_MEMMAP_SWITCHES */
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#define EC_SWITCH_LID_OPEN 0x01
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#define EC_SWITCH_POWER_BUTTON_PRESSED 0x02
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#define EC_SWITCH_WRITE_PROTECT_DISABLED 0x04
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/* Recovery requested via keyboard */
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#define EC_SWITCH_KEYBOARD_RECOVERY 0x08
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/* Recovery requested via dedicated signal (from servo board) */
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#define EC_SWITCH_DEDICATED_RECOVERY 0x10
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/* Was fake developer mode switch; now unused. Remove in next refactor. */
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#define EC_SWITCH_IGNORE0 0x20
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/* Host command interface flags */
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/* Host command interface supports LPC args (LPC interface only) */
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#define EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED 0x01
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/* Wireless switch flags */
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#define EC_WIRELESS_SWITCH_WLAN 0x01
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#define EC_WIRELESS_SWITCH_BLUETOOTH 0x02
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/*
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* This header file is used in coreboot both in C and ACPI code. The ACPI code
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* is pre-processed to handle constants but the ASL compiler is unable to
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* handle actual C code so keep it separate.
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*/
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#ifndef __ACPI__
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/* LPC command status byte masks */
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/* EC has written a byte in the data register and host hasn't read it yet */
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#define EC_LPC_STATUS_TO_HOST 0x01
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/* Host has written a command/data byte and the EC hasn't read it yet */
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#define EC_LPC_STATUS_FROM_HOST 0x02
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/* EC is processing a command */
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#define EC_LPC_STATUS_PROCESSING 0x04
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/* Last write to EC was a command, not data */
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#define EC_LPC_STATUS_LAST_CMD 0x08
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/* EC is in burst mode. Unsupported by Chrome EC, so this bit is never set */
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#define EC_LPC_STATUS_BURST_MODE 0x10
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/* SCI event is pending (requesting SCI query) */
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#define EC_LPC_STATUS_SCI_PENDING 0x20
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/* SMI event is pending (requesting SMI query) */
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#define EC_LPC_STATUS_SMI_PENDING 0x40
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/* (reserved) */
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#define EC_LPC_STATUS_RESERVED 0x80
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/*
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* EC is busy. This covers both the EC processing a command, and the host has
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* written a new command but the EC hasn't picked it up yet.
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*/
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#define EC_LPC_STATUS_BUSY_MASK \
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(EC_LPC_STATUS_FROM_HOST | EC_LPC_STATUS_PROCESSING)
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/* Host command response codes */
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enum ec_status {
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EC_RES_SUCCESS = 0,
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EC_RES_INVALID_COMMAND = 1,
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EC_RES_ERROR = 2,
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EC_RES_INVALID_PARAM = 3,
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EC_RES_ACCESS_DENIED = 4,
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EC_RES_INVALID_RESPONSE = 5,
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EC_RES_INVALID_VERSION = 6,
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EC_RES_INVALID_CHECKSUM = 7,
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EC_RES_IN_PROGRESS = 8, /* Accepted, command in progress */
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EC_RES_UNAVAILABLE = 9, /* No response available */
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EC_RES_TIMEOUT = 10, /* We got a timeout */
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EC_RES_OVERFLOW = 11, /* Table / data overflow */
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};
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/*
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* Host event codes. Note these are 1-based, not 0-based, because ACPI query
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* EC command uses code 0 to mean "no event pending". We explicitly specify
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* each value in the enum listing so they won't change if we delete/insert an
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* item or rearrange the list (it needs to be stable across platforms, not
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* just within a single compiled instance).
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*/
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enum host_event_code {
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EC_HOST_EVENT_LID_CLOSED = 1,
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EC_HOST_EVENT_LID_OPEN = 2,
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EC_HOST_EVENT_POWER_BUTTON = 3,
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EC_HOST_EVENT_AC_CONNECTED = 4,
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EC_HOST_EVENT_AC_DISCONNECTED = 5,
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EC_HOST_EVENT_BATTERY_LOW = 6,
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EC_HOST_EVENT_BATTERY_CRITICAL = 7,
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EC_HOST_EVENT_BATTERY = 8,
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EC_HOST_EVENT_THERMAL_THRESHOLD = 9,
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EC_HOST_EVENT_THERMAL_OVERLOAD = 10,
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EC_HOST_EVENT_THERMAL = 11,
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EC_HOST_EVENT_USB_CHARGER = 12,
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EC_HOST_EVENT_KEY_PRESSED = 13,
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/*
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* EC has finished initializing the host interface. The host can check
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* for this event following sending a EC_CMD_REBOOT_EC command to
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* determine when the EC is ready to accept subsequent commands.
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*/
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EC_HOST_EVENT_INTERFACE_READY = 14,
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/* Keyboard recovery combo has been pressed */
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EC_HOST_EVENT_KEYBOARD_RECOVERY = 15,
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/* Shutdown due to thermal overload */
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EC_HOST_EVENT_THERMAL_SHUTDOWN = 16,
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/* Shutdown due to battery level too low */
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EC_HOST_EVENT_BATTERY_SHUTDOWN = 17,
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/*
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* The high bit of the event mask is not used as a host event code. If
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* it reads back as set, then the entire event mask should be
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* considered invalid by the host. This can happen when reading the
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* raw event status via EC_MEMMAP_HOST_EVENTS but the LPC interface is
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* not initialized on the EC, or improperly configured on the host.
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*/
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EC_HOST_EVENT_INVALID = 32
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};
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/* Host event mask */
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#define EC_HOST_EVENT_MASK(event_code) (1UL << ((event_code) - 1))
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/* Arguments at EC_LPC_ADDR_HOST_ARGS */
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struct ec_lpc_host_args {
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uint8_t flags;
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uint8_t command_version;
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uint8_t data_size;
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/*
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* Checksum; sum of command + flags + command_version + data_size +
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* all params/response data bytes.
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*/
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uint8_t checksum;
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} __packed;
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/* Flags for ec_lpc_host_args.flags */
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/*
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* Args are from host. Data area at EC_LPC_ADDR_HOST_PARAM contains command
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* params.
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*
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* If EC gets a command and this flag is not set, this is an old-style command.
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* Command version is 0 and params from host are at EC_LPC_ADDR_OLD_PARAM with
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* unknown length. EC must respond with an old-style response (that is,
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* withouth setting EC_HOST_ARGS_FLAG_TO_HOST).
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*/
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#define EC_HOST_ARGS_FLAG_FROM_HOST 0x01
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/*
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* Args are from EC. Data area at EC_LPC_ADDR_HOST_PARAM contains response.
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*
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* If EC responds to a command and this flag is not set, this is an old-style
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* response. Command version is 0 and response data from EC is at
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* EC_LPC_ADDR_OLD_PARAM with unknown length.
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*/
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#define EC_HOST_ARGS_FLAG_TO_HOST 0x02
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/*
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* Notes on commands:
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*
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* Each command is an 8-byte command value. Commands which take params or
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* return response data specify structs for that data. If no struct is
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* specified, the command does not input or output data, respectively.
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* Parameter/response length is implicit in the structs. Some underlying
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* communication protocols (I2C, SPI) may add length or checksum headers, but
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* those are implementation-dependent and not defined here.
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*/
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/*****************************************************************************/
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/* General / test commands */
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/*
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* Get protocol version, used to deal with non-backward compatible protocol
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* changes.
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*/
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#define EC_CMD_PROTO_VERSION 0x00
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struct ec_response_proto_version {
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uint32_t version;
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} __packed;
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/*
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* Hello. This is a simple command to test the EC is responsive to
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* commands.
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*/
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#define EC_CMD_HELLO 0x01
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struct ec_params_hello {
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uint32_t in_data; /* Pass anything here */
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} __packed;
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struct ec_response_hello {
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uint32_t out_data; /* Output will be in_data + 0x01020304 */
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} __packed;
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/* Get version number */
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#define EC_CMD_GET_VERSION 0x02
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enum ec_current_image {
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EC_IMAGE_UNKNOWN = 0,
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EC_IMAGE_RO,
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EC_IMAGE_RW
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};
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struct ec_response_get_version {
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/* Null-terminated version strings for RO, RW */
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char version_string_ro[32];
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char version_string_rw[32];
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char reserved[32]; /* Was previously RW-B string */
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uint32_t current_image; /* One of ec_current_image */
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} __packed;
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/* Read test */
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#define EC_CMD_READ_TEST 0x03
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struct ec_params_read_test {
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uint32_t offset; /* Starting value for read buffer */
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uint32_t size; /* Size to read in bytes */
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} __packed;
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struct ec_response_read_test {
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uint32_t data[32];
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} __packed;
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/*
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* Get build information
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*
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* Response is null-terminated string.
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*/
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#define EC_CMD_GET_BUILD_INFO 0x04
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/* Get chip info */
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#define EC_CMD_GET_CHIP_INFO 0x05
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struct ec_response_get_chip_info {
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/* Null-terminated strings */
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char vendor[32];
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char name[32];
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char revision[32]; /* Mask version */
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} __packed;
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/* Get board HW version */
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#define EC_CMD_GET_BOARD_VERSION 0x06
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struct ec_response_board_version {
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uint16_t board_version; /* A monotonously incrementing number. */
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} __packed;
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/*
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* Read memory-mapped data.
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*
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* This is an alternate interface to memory-mapped data for bus protocols
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* which don't support direct-mapped memory - I2C, SPI, etc.
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*
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* Response is params.size bytes of data.
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*/
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#define EC_CMD_READ_MEMMAP 0x07
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struct ec_params_read_memmap {
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uint8_t offset; /* Offset in memmap (EC_MEMMAP_*) */
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uint8_t size; /* Size to read in bytes */
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} __packed;
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/* Read versions supported for a command */
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#define EC_CMD_GET_CMD_VERSIONS 0x08
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struct ec_params_get_cmd_versions {
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uint8_t cmd; /* Command to check */
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} __packed;
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struct ec_response_get_cmd_versions {
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/*
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* Mask of supported versions; use EC_VER_MASK() to compare with a
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* desired version.
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*/
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uint32_t version_mask;
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} __packed;
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/*
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* Check EC communcations status (busy). This is needed on i2c/spi but not
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* on lpc since it has its own out-of-band busy indicator.
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*
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* lpc must read the status from the command register. Attempting this on
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* lpc will overwrite the args/parameter space and corrupt its data.
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*/
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#define EC_CMD_GET_COMMS_STATUS 0x09
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/* Avoid using ec_status which is for return values */
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enum ec_comms_status {
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EC_COMMS_STATUS_PROCESSING = 1 << 0, /* Processing cmd */
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};
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struct ec_response_get_comms_status {
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uint32_t flags; /* Mask of enum ec_comms_status */
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} __packed;
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/*****************************************************************************/
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/* Flash commands */
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/* Get flash info */
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#define EC_CMD_FLASH_INFO 0x10
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struct ec_response_flash_info {
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/* Usable flash size, in bytes */
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uint32_t flash_size;
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/*
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* Write block size. Write offset and size must be a multiple
|
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* of this.
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*/
|
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uint32_t write_block_size;
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/*
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* Erase block size. Erase offset and size must be a multiple
|
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* of this.
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*/
|
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uint32_t erase_block_size;
|
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/*
|
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* Protection block size. Protection offset and size must be a
|
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* multiple of this.
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*/
|
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uint32_t protect_block_size;
|
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} __packed;
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/*
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* Read flash
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*
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* Response is params.size bytes of data.
|
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*/
|
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#define EC_CMD_FLASH_READ 0x11
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struct ec_params_flash_read {
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uint32_t offset; /* Byte offset to read */
|
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uint32_t size; /* Size to read in bytes */
|
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} __packed;
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/* Write flash */
|
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#define EC_CMD_FLASH_WRITE 0x12
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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 */
|