blob: 12811cc070e5859b892e7aad42abb7076cf4de98 [file] [log] [blame]
Hung-ying Tyan88364382013-05-15 18:27:28 +08001/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file.
4 */
5
6/* Host communication command constants for Chrome EC */
7
8#ifndef __CROS_EC_COMMANDS_H
9#define __CROS_EC_COMMANDS_H
10
11/*
12 * Protocol overview
13 *
14 * request: CMD [ P0 P1 P2 ... Pn S ]
15 * response: ERR [ P0 P1 P2 ... Pn S ]
16 *
17 * where the bytes are defined as follow :
18 * - CMD is the command code. (defined by EC_CMD_ constants)
19 * - ERR is the error code. (defined by EC_RES_ constants)
20 * - Px is the optional payload.
21 * it is not sent if the error code is not success.
22 * (defined by ec_params_ and ec_response_ structures)
23 * - S is the checksum which is the sum of all payload bytes.
24 *
25 * On LPC, CMD and ERR are sent/received at EC_LPC_ADDR_KERNEL|USER_CMD
26 * and the payloads are sent/received at EC_LPC_ADDR_KERNEL|USER_PARAM.
27 * On I2C, all bytes are sent serially in the same message.
28 */
29
30/* Current version of this protocol */
31#define EC_PROTO_VERSION 0x00000002
32
33/* Command version mask */
34#define EC_VER_MASK(version) (1UL << (version))
35
36/* I/O addresses for ACPI commands */
37#define EC_LPC_ADDR_ACPI_DATA 0x62
38#define EC_LPC_ADDR_ACPI_CMD 0x66
39
40/* I/O addresses for host command */
41#define EC_LPC_ADDR_HOST_DATA 0x200
42#define EC_LPC_ADDR_HOST_CMD 0x204
43
44/* I/O addresses for host command args and params */
45#define EC_LPC_ADDR_HOST_ARGS 0x800
46#define EC_LPC_ADDR_HOST_PARAM 0x804
47#define EC_HOST_PARAM_SIZE 0x0fc /* Size of param area in bytes */
48
49/* I/O addresses for host command params, old interface */
50#define EC_LPC_ADDR_OLD_PARAM 0x880
51#define EC_OLD_PARAM_SIZE 0x080 /* Size of param area in bytes */
52
53/* EC command register bit functions */
54#define EC_LPC_CMDR_DATA (1 << 0) /* Data ready for host to read */
55#define EC_LPC_CMDR_PENDING (1 << 1) /* Write pending to EC */
56#define EC_LPC_CMDR_BUSY (1 << 2) /* EC is busy processing a command */
57#define EC_LPC_CMDR_CMD (1 << 3) /* Last host write was a command */
58#define EC_LPC_CMDR_ACPI_BRST (1 << 4) /* Burst mode (not used) */
59#define EC_LPC_CMDR_SCI (1 << 5) /* SCI event is pending */
60#define EC_LPC_CMDR_SMI (1 << 6) /* SMI event is pending */
61
62#define EC_LPC_ADDR_MEMMAP 0x900
63#define EC_MEMMAP_SIZE 255 /* ACPI IO buffer max is 255 bytes */
64#define EC_MEMMAP_TEXT_MAX 8 /* Size of a string in the memory map */
65
66/* The offset address of each type of data in mapped memory. */
67#define EC_MEMMAP_TEMP_SENSOR 0x00 /* Temp sensors */
68#define EC_MEMMAP_FAN 0x10 /* Fan speeds */
69#define EC_MEMMAP_TEMP_SENSOR_B 0x18 /* Temp sensors (second set) */
70#define EC_MEMMAP_ID 0x20 /* 'E' 'C' */
71#define EC_MEMMAP_ID_VERSION 0x22 /* Version of data in 0x20 - 0x2f */
72#define EC_MEMMAP_THERMAL_VERSION 0x23 /* Version of data in 0x00 - 0x1f */
73#define EC_MEMMAP_BATTERY_VERSION 0x24 /* Version of data in 0x40 - 0x7f */
74#define EC_MEMMAP_SWITCHES_VERSION 0x25 /* Version of data in 0x30 - 0x33 */
75#define EC_MEMMAP_EVENTS_VERSION 0x26 /* Version of data in 0x34 - 0x3f */
76#define EC_MEMMAP_HOST_CMD_FLAGS 0x27 /* Host command interface flags */
77#define EC_MEMMAP_SWITCHES 0x30
78#define EC_MEMMAP_HOST_EVENTS 0x34
79#define EC_MEMMAP_BATT_VOLT 0x40 /* Battery Present Voltage */
80#define EC_MEMMAP_BATT_RATE 0x44 /* Battery Present Rate */
81#define EC_MEMMAP_BATT_CAP 0x48 /* Battery Remaining Capacity */
82#define EC_MEMMAP_BATT_FLAG 0x4c /* Battery State, defined below */
83#define EC_MEMMAP_BATT_DCAP 0x50 /* Battery Design Capacity */
84#define EC_MEMMAP_BATT_DVLT 0x54 /* Battery Design Voltage */
85#define EC_MEMMAP_BATT_LFCC 0x58 /* Battery Last Full Charge Capacity */
86#define EC_MEMMAP_BATT_CCNT 0x5c /* Battery Cycle Count */
87#define EC_MEMMAP_BATT_MFGR 0x60 /* Battery Manufacturer String */
88#define EC_MEMMAP_BATT_MODEL 0x68 /* Battery Model Number String */
89#define EC_MEMMAP_BATT_SERIAL 0x70 /* Battery Serial Number String */
90#define EC_MEMMAP_BATT_TYPE 0x78 /* Battery Type String */
91
92/* Number of temp sensors at EC_MEMMAP_TEMP_SENSOR */
93#define EC_TEMP_SENSOR_ENTRIES 16
94/*
95 * Number of temp sensors at EC_MEMMAP_TEMP_SENSOR_B.
96 *
97 * Valid only if EC_MEMMAP_THERMAL_VERSION returns >= 2.
98 */
99#define EC_TEMP_SENSOR_B_ENTRIES 8
100#define EC_TEMP_SENSOR_NOT_PRESENT 0xff
101#define EC_TEMP_SENSOR_ERROR 0xfe
102#define EC_TEMP_SENSOR_NOT_POWERED 0xfd
103#define EC_TEMP_SENSOR_NOT_CALIBRATED 0xfc
104/*
105 * The offset of temperature value stored in mapped memory. This allows
106 * reporting a temperature range of 200K to 454K = -73C to 181C.
107 */
108#define EC_TEMP_SENSOR_OFFSET 200
109
110#define EC_FAN_SPEED_ENTRIES 4 /* Number of fans at EC_MEMMAP_FAN */
111#define EC_FAN_SPEED_NOT_PRESENT 0xffff /* Entry not present */
112#define EC_FAN_SPEED_STALLED 0xfffe /* Fan stalled */
113
114/* Battery bit flags at EC_MEMMAP_BATT_FLAG. */
115#define EC_BATT_FLAG_AC_PRESENT 0x01
116#define EC_BATT_FLAG_BATT_PRESENT 0x02
117#define EC_BATT_FLAG_DISCHARGING 0x04
118#define EC_BATT_FLAG_CHARGING 0x08
119#define EC_BATT_FLAG_LEVEL_CRITICAL 0x10
120
121/* Switch flags at EC_MEMMAP_SWITCHES */
122#define EC_SWITCH_LID_OPEN 0x01
123#define EC_SWITCH_POWER_BUTTON_PRESSED 0x02
124#define EC_SWITCH_WRITE_PROTECT_DISABLED 0x04
125/* Recovery requested via keyboard */
126#define EC_SWITCH_KEYBOARD_RECOVERY 0x08
127/* Recovery requested via dedicated signal (from servo board) */
128#define EC_SWITCH_DEDICATED_RECOVERY 0x10
129/* Was fake developer mode switch; now unused. Remove in next refactor. */
130#define EC_SWITCH_IGNORE0 0x20
131
132/* Host command interface flags */
133/* Host command interface supports LPC args (LPC interface only) */
134#define EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED 0x01
135
136/* Wireless switch flags */
137#define EC_WIRELESS_SWITCH_WLAN 0x01
138#define EC_WIRELESS_SWITCH_BLUETOOTH 0x02
139
140/*
141 * This header file is used in coreboot both in C and ACPI code. The ACPI code
142 * is pre-processed to handle constants but the ASL compiler is unable to
143 * handle actual C code so keep it separate.
144 */
145#ifndef __ACPI__
146
147/*
148 * Define __packed if someone hasn't beat us to it. Linux kernel style
149 * checking prefers __packed over __attribute__((packed)).
150 */
151#ifndef __packed
152#define __packed __attribute__((packed))
153#endif
154
155/* LPC command status byte masks */
156/* EC has written a byte in the data register and host hasn't read it yet */
157#define EC_LPC_STATUS_TO_HOST 0x01
158/* Host has written a command/data byte and the EC hasn't read it yet */
159#define EC_LPC_STATUS_FROM_HOST 0x02
160/* EC is processing a command */
161#define EC_LPC_STATUS_PROCESSING 0x04
162/* Last write to EC was a command, not data */
163#define EC_LPC_STATUS_LAST_CMD 0x08
164/* EC is in burst mode. Unsupported by Chrome EC, so this bit is never set */
165#define EC_LPC_STATUS_BURST_MODE 0x10
166/* SCI event is pending (requesting SCI query) */
167#define EC_LPC_STATUS_SCI_PENDING 0x20
168/* SMI event is pending (requesting SMI query) */
169#define EC_LPC_STATUS_SMI_PENDING 0x40
170/* (reserved) */
171#define EC_LPC_STATUS_RESERVED 0x80
172
173/*
174 * EC is busy. This covers both the EC processing a command, and the host has
175 * written a new command but the EC hasn't picked it up yet.
176 */
177#define EC_LPC_STATUS_BUSY_MASK \
178 (EC_LPC_STATUS_FROM_HOST | EC_LPC_STATUS_PROCESSING)
179
180/* Host command response codes */
181enum ec_status {
182 EC_RES_SUCCESS = 0,
183 EC_RES_INVALID_COMMAND = 1,
184 EC_RES_ERROR = 2,
185 EC_RES_INVALID_PARAM = 3,
186 EC_RES_ACCESS_DENIED = 4,
187 EC_RES_INVALID_RESPONSE = 5,
188 EC_RES_INVALID_VERSION = 6,
189 EC_RES_INVALID_CHECKSUM = 7,
190 EC_RES_IN_PROGRESS = 8, /* Accepted, command in progress */
191 EC_RES_UNAVAILABLE = 9, /* No response available */
192 EC_RES_TIMEOUT = 10, /* We got a timeout */
193 EC_RES_OVERFLOW = 11, /* Table / data overflow */
194};
195
196/*
197 * Host event codes. Note these are 1-based, not 0-based, because ACPI query
198 * EC command uses code 0 to mean "no event pending". We explicitly specify
199 * each value in the enum listing so they won't change if we delete/insert an
200 * item or rearrange the list (it needs to be stable across platforms, not
201 * just within a single compiled instance).
202 */
203enum host_event_code {
204 EC_HOST_EVENT_LID_CLOSED = 1,
205 EC_HOST_EVENT_LID_OPEN = 2,
206 EC_HOST_EVENT_POWER_BUTTON = 3,
207 EC_HOST_EVENT_AC_CONNECTED = 4,
208 EC_HOST_EVENT_AC_DISCONNECTED = 5,
209 EC_HOST_EVENT_BATTERY_LOW = 6,
210 EC_HOST_EVENT_BATTERY_CRITICAL = 7,
211 EC_HOST_EVENT_BATTERY = 8,
212 EC_HOST_EVENT_THERMAL_THRESHOLD = 9,
213 EC_HOST_EVENT_THERMAL_OVERLOAD = 10,
214 EC_HOST_EVENT_THERMAL = 11,
215 EC_HOST_EVENT_USB_CHARGER = 12,
216 EC_HOST_EVENT_KEY_PRESSED = 13,
217 /*
218 * EC has finished initializing the host interface. The host can check
219 * for this event following sending a EC_CMD_REBOOT_EC command to
220 * determine when the EC is ready to accept subsequent commands.
221 */
222 EC_HOST_EVENT_INTERFACE_READY = 14,
223 /* Keyboard recovery combo has been pressed */
224 EC_HOST_EVENT_KEYBOARD_RECOVERY = 15,
225
226 /* Shutdown due to thermal overload */
227 EC_HOST_EVENT_THERMAL_SHUTDOWN = 16,
228 /* Shutdown due to battery level too low */
229 EC_HOST_EVENT_BATTERY_SHUTDOWN = 17,
230
231 /*
232 * The high bit of the event mask is not used as a host event code. If
233 * it reads back as set, then the entire event mask should be
234 * considered invalid by the host. This can happen when reading the
235 * raw event status via EC_MEMMAP_HOST_EVENTS but the LPC interface is
236 * not initialized on the EC, or improperly configured on the host.
237 */
238 EC_HOST_EVENT_INVALID = 32
239};
240/* Host event mask */
241#define EC_HOST_EVENT_MASK(event_code) (1UL << ((event_code) - 1))
242
243/* Arguments at EC_LPC_ADDR_HOST_ARGS */
244struct ec_lpc_host_args {
245 uint8_t flags;
246 uint8_t command_version;
247 uint8_t data_size;
248 /*
249 * Checksum; sum of command + flags + command_version + data_size +
250 * all params/response data bytes.
251 */
252 uint8_t checksum;
253} __packed;
254
255/* Flags for ec_lpc_host_args.flags */
256/*
257 * Args are from host. Data area at EC_LPC_ADDR_HOST_PARAM contains command
258 * params.
259 *
260 * If EC gets a command and this flag is not set, this is an old-style command.
261 * Command version is 0 and params from host are at EC_LPC_ADDR_OLD_PARAM with
262 * unknown length. EC must respond with an old-style response (that is,
263 * withouth setting EC_HOST_ARGS_FLAG_TO_HOST).
264 */
265#define EC_HOST_ARGS_FLAG_FROM_HOST 0x01
266/*
267 * Args are from EC. Data area at EC_LPC_ADDR_HOST_PARAM contains response.
268 *
269 * If EC responds to a command and this flag is not set, this is an old-style
270 * response. Command version is 0 and response data from EC is at
271 * EC_LPC_ADDR_OLD_PARAM with unknown length.
272 */
273#define EC_HOST_ARGS_FLAG_TO_HOST 0x02
274
275/*
276 * Notes on commands:
277 *
278 * Each command is an 8-byte command value. Commands which take params or
279 * return response data specify structs for that data. If no struct is
280 * specified, the command does not input or output data, respectively.
281 * Parameter/response length is implicit in the structs. Some underlying
282 * communication protocols (I2C, SPI) may add length or checksum headers, but
283 * those are implementation-dependent and not defined here.
284 */
285
286/*****************************************************************************/
287/* General / test commands */
288
289/*
290 * Get protocol version, used to deal with non-backward compatible protocol
291 * changes.
292 */
293#define EC_CMD_PROTO_VERSION 0x00
294
295struct ec_response_proto_version {
296 uint32_t version;
297} __packed;
298
299/*
300 * Hello. This is a simple command to test the EC is responsive to
301 * commands.
302 */
303#define EC_CMD_HELLO 0x01
304
305struct ec_params_hello {
306 uint32_t in_data; /* Pass anything here */
307} __packed;
308
309struct ec_response_hello {
310 uint32_t out_data; /* Output will be in_data + 0x01020304 */
311} __packed;
312
313/* Get version number */
314#define EC_CMD_GET_VERSION 0x02
315
316enum ec_current_image {
317 EC_IMAGE_UNKNOWN = 0,
318 EC_IMAGE_RO,
319 EC_IMAGE_RW
320};
321
322struct ec_response_get_version {
323 /* Null-terminated version strings for RO, RW */
324 char version_string_ro[32];
325 char version_string_rw[32];
326 char reserved[32]; /* Was previously RW-B string */
327 uint32_t current_image; /* One of ec_current_image */
328} __packed;
329
330/* Read test */
331#define EC_CMD_READ_TEST 0x03
332
333struct ec_params_read_test {
334 uint32_t offset; /* Starting value for read buffer */
335 uint32_t size; /* Size to read in bytes */
336} __packed;
337
338struct ec_response_read_test {
339 uint32_t data[32];
340} __packed;
341
342/*
343 * Get build information
344 *
345 * Response is null-terminated string.
346 */
347#define EC_CMD_GET_BUILD_INFO 0x04
348
349/* Get chip info */
350#define EC_CMD_GET_CHIP_INFO 0x05
351
352struct ec_response_get_chip_info {
353 /* Null-terminated strings */
354 char vendor[32];
355 char name[32];
356 char revision[32]; /* Mask version */
357} __packed;
358
359/* Get board HW version */
360#define EC_CMD_GET_BOARD_VERSION 0x06
361
362struct ec_response_board_version {
363 uint16_t board_version; /* A monotonously incrementing number. */
364} __packed;
365
366/*
367 * Read memory-mapped data.
368 *
369 * This is an alternate interface to memory-mapped data for bus protocols
370 * which don't support direct-mapped memory - I2C, SPI, etc.
371 *
372 * Response is params.size bytes of data.
373 */
374#define EC_CMD_READ_MEMMAP 0x07
375
376struct ec_params_read_memmap {
377 uint8_t offset; /* Offset in memmap (EC_MEMMAP_*) */
378 uint8_t size; /* Size to read in bytes */
379} __packed;
380
381/* Read versions supported for a command */
382#define EC_CMD_GET_CMD_VERSIONS 0x08
383
384struct ec_params_get_cmd_versions {
385 uint8_t cmd; /* Command to check */
386} __packed;
387
388struct ec_response_get_cmd_versions {
389 /*
390 * Mask of supported versions; use EC_VER_MASK() to compare with a
391 * desired version.
392 */
393 uint32_t version_mask;
394} __packed;
395
396/*
397 * Check EC communcations status (busy). This is needed on i2c/spi but not
398 * on lpc since it has its own out-of-band busy indicator.
399 *
400 * lpc must read the status from the command register. Attempting this on
401 * lpc will overwrite the args/parameter space and corrupt its data.
402 */
403#define EC_CMD_GET_COMMS_STATUS 0x09
404
405/* Avoid using ec_status which is for return values */
406enum ec_comms_status {
407 EC_COMMS_STATUS_PROCESSING = 1 << 0, /* Processing cmd */
408};
409
410struct ec_response_get_comms_status {
411 uint32_t flags; /* Mask of enum ec_comms_status */
412} __packed;
413
414
415/*****************************************************************************/
416/* Flash commands */
417
418/* Get flash info */
419#define EC_CMD_FLASH_INFO 0x10
420
421struct ec_response_flash_info {
422 /* Usable flash size, in bytes */
423 uint32_t flash_size;
424 /*
425 * Write block size. Write offset and size must be a multiple
426 * of this.
427 */
428 uint32_t write_block_size;
429 /*
430 * Erase block size. Erase offset and size must be a multiple
431 * of this.
432 */
433 uint32_t erase_block_size;
434 /*
435 * Protection block size. Protection offset and size must be a
436 * multiple of this.
437 */
438 uint32_t protect_block_size;
439} __packed;
440
441/*
442 * Read flash
443 *
444 * Response is params.size bytes of data.
445 */
446#define EC_CMD_FLASH_READ 0x11
447
448struct ec_params_flash_read {
449 uint32_t offset; /* Byte offset to read */
450 uint32_t size; /* Size to read in bytes */
451} __packed;
452
453/* Write flash */
454#define EC_CMD_FLASH_WRITE 0x12
455
456struct ec_params_flash_write {
457 uint32_t offset; /* Byte offset to write */
458 uint32_t size; /* Size to write in bytes */
459 /*
460 * Data to write. Could really use EC_PARAM_SIZE - 8, but tidiest to
461 * use a power of 2 so writes stay aligned.
462 */
463 uint8_t data[64];
464} __packed;
465
466/* Erase flash */
467#define EC_CMD_FLASH_ERASE 0x13
468
469struct ec_params_flash_erase {
470 uint32_t offset; /* Byte offset to erase */
471 uint32_t size; /* Size to erase in bytes */
472} __packed;
473
474/*
475 * Get/set flash protection.
476 *
477 * If mask!=0, sets/clear the requested bits of flags. Depending on the
478 * firmware write protect GPIO, not all flags will take effect immediately;
479 * some flags require a subsequent hard reset to take effect. Check the
480 * returned flags bits to see what actually happened.
481 *
482 * If mask=0, simply returns the current flags state.
483 */
484#define EC_CMD_FLASH_PROTECT 0x15
485#define EC_VER_FLASH_PROTECT 1 /* Command version 1 */
486
487/* Flags for flash protection */
488/* RO flash code protected when the EC boots */
489#define EC_FLASH_PROTECT_RO_AT_BOOT (1 << 0)
490/*
491 * RO flash code protected now. If this bit is set, at-boot status cannot
492 * be changed.
493 */
494#define EC_FLASH_PROTECT_RO_NOW (1 << 1)
495/* Entire flash code protected now, until reboot. */
496#define EC_FLASH_PROTECT_ALL_NOW (1 << 2)
497/* Flash write protect GPIO is asserted now */
498#define EC_FLASH_PROTECT_GPIO_ASSERTED (1 << 3)
499/* Error - at least one bank of flash is stuck locked, and cannot be unlocked */
500#define EC_FLASH_PROTECT_ERROR_STUCK (1 << 4)
501/*
502 * Error - flash protection is in inconsistent state. At least one bank of
503 * flash which should be protected is not protected. Usually fixed by
504 * re-requesting the desired flags, or by a hard reset if that fails.
505 */
506#define EC_FLASH_PROTECT_ERROR_INCONSISTENT (1 << 5)
507/* Entile flash code protected when the EC boots */
508#define EC_FLASH_PROTECT_ALL_AT_BOOT (1 << 6)
509
510struct ec_params_flash_protect {
511 uint32_t mask; /* Bits in flags to apply */
512 uint32_t flags; /* New flags to apply */
513} __packed;
514
515struct ec_response_flash_protect {
516 /* Current value of flash protect flags */
517 uint32_t flags;
518 /*
519 * Flags which are valid on this platform. This allows the caller
520 * to distinguish between flags which aren't set vs. flags which can't
521 * be set on this platform.
522 */
523 uint32_t valid_flags;
524 /* Flags which can be changed given the current protection state */
525 uint32_t writable_flags;
526} __packed;
527
528/*
529 * Note: commands 0x14 - 0x19 version 0 were old commands to get/set flash
530 * write protect. These commands may be reused with version > 0.
531 */
532
533/* Get the region offset/size */
534#define EC_CMD_FLASH_REGION_INFO 0x16
535#define EC_VER_FLASH_REGION_INFO 1
536
537enum ec_flash_region {
538 /* Region which holds read-only EC image */
539 EC_FLASH_REGION_RO,
540 /* Region which holds rewritable EC image */
541 EC_FLASH_REGION_RW,
542 /*
543 * Region which should be write-protected in the factory (a superset of
544 * EC_FLASH_REGION_RO)
545 */
546 EC_FLASH_REGION_WP_RO,
547};
548
549struct ec_params_flash_region_info {
550 uint32_t region; /* enum ec_flash_region */
551} __packed;
552
553struct ec_response_flash_region_info {
554 uint32_t offset;
555 uint32_t size;
556} __packed;
557
558/* Read/write VbNvContext */
559#define EC_CMD_VBNV_CONTEXT 0x17
560#define EC_VER_VBNV_CONTEXT 1
561#define EC_VBNV_BLOCK_SIZE 16
562
563enum ec_vbnvcontext_op {
564 EC_VBNV_CONTEXT_OP_READ,
565 EC_VBNV_CONTEXT_OP_WRITE,
566};
567
568struct ec_params_vbnvcontext {
569 uint32_t op;
570 uint8_t block[EC_VBNV_BLOCK_SIZE];
571} __packed;
572
573struct ec_response_vbnvcontext {
574 uint8_t block[EC_VBNV_BLOCK_SIZE];
575} __packed;
576
577/*****************************************************************************/
578/* PWM commands */
579
580/* Get fan target RPM */
581#define EC_CMD_PWM_GET_FAN_TARGET_RPM 0x20
582
583struct ec_response_pwm_get_fan_rpm {
584 uint32_t rpm;
585} __packed;
586
587/* Set target fan RPM */
588#define EC_CMD_PWM_SET_FAN_TARGET_RPM 0x21
589
590struct ec_params_pwm_set_fan_target_rpm {
591 uint32_t rpm;
592} __packed;
593
594/* Get keyboard backlight */
595#define EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT 0x22
596
597struct ec_response_pwm_get_keyboard_backlight {
598 uint8_t percent;
599 uint8_t enabled;
600} __packed;
601
602/* Set keyboard backlight */
603#define EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT 0x23
604
605struct ec_params_pwm_set_keyboard_backlight {
606 uint8_t percent;
607} __packed;
608
609/* Set target fan PWM duty cycle */
610#define EC_CMD_PWM_SET_FAN_DUTY 0x24
611
612struct ec_params_pwm_set_fan_duty {
613 uint32_t percent;
614} __packed;
615
616/*****************************************************************************/
617/*
618 * Lightbar commands. This looks worse than it is. Since we only use one HOST
619 * command to say "talk to the lightbar", we put the "and tell it to do X" part
620 * into a subcommand. We'll make separate structs for subcommands with
621 * different input args, so that we know how much to expect.
622 */
623#define EC_CMD_LIGHTBAR_CMD 0x28
624
625struct rgb_s {
626 uint8_t r, g, b;
627};
628
629#define LB_BATTERY_LEVELS 4
630/* List of tweakable parameters. NOTE: It's __packed so it can be sent in a
631 * host command, but the alignment is the same regardless. Keep it that way.
632 */
633struct lightbar_params {
634 /* Timing */
635 int google_ramp_up;
636 int google_ramp_down;
637 int s3s0_ramp_up;
638 int s0_tick_delay[2]; /* AC=0/1 */
639 int s0a_tick_delay[2]; /* AC=0/1 */
640 int s0s3_ramp_down;
641 int s3_sleep_for;
642 int s3_ramp_up;
643 int s3_ramp_down;
644
645 /* Oscillation */
646 uint8_t new_s0;
647 uint8_t osc_min[2]; /* AC=0/1 */
648 uint8_t osc_max[2]; /* AC=0/1 */
649 uint8_t w_ofs[2]; /* AC=0/1 */
650
651 /* Brightness limits based on the backlight and AC. */
652 uint8_t bright_bl_off_fixed[2]; /* AC=0/1 */
653 uint8_t bright_bl_on_min[2]; /* AC=0/1 */
654 uint8_t bright_bl_on_max[2]; /* AC=0/1 */
655
656 /* Battery level thresholds */
657 uint8_t battery_threshold[LB_BATTERY_LEVELS - 1];
658
659 /* Map [AC][battery_level] to color index */
660 uint8_t s0_idx[2][LB_BATTERY_LEVELS]; /* AP is running */
661 uint8_t s3_idx[2][LB_BATTERY_LEVELS]; /* AP is sleeping */
662
663 /* Color palette */
664 struct rgb_s color[8]; /* 0-3 are Google colors */
665} __packed;
666
667struct ec_params_lightbar {
668 uint8_t cmd; /* Command (see enum lightbar_command) */
669 union {
670 struct {
671 /* no args */
672 } dump, off, on, init, get_seq, get_params;
673
674 struct num {
675 uint8_t num;
676 } brightness, seq, demo;
677
678 struct reg {
679 uint8_t ctrl, reg, value;
680 } reg;
681
682 struct rgb {
683 uint8_t led, red, green, blue;
684 } rgb;
685
686 struct lightbar_params set_params;
687 };
688} __packed;
689
690struct ec_response_lightbar {
691 union {
692 struct dump {
693 struct {
694 uint8_t reg;
695 uint8_t ic0;
696 uint8_t ic1;
697 } vals[23];
698 } dump;
699
700 struct get_seq {
701 uint8_t num;
702 } get_seq;
703
704 struct lightbar_params get_params;
705
706 struct {
707 /* no return params */
708 } off, on, init, brightness, seq, reg, rgb, demo, set_params;
709 };
710} __packed;
711
712/* Lightbar commands */
713enum lightbar_command {
714 LIGHTBAR_CMD_DUMP = 0,
715 LIGHTBAR_CMD_OFF = 1,
716 LIGHTBAR_CMD_ON = 2,
717 LIGHTBAR_CMD_INIT = 3,
718 LIGHTBAR_CMD_BRIGHTNESS = 4,
719 LIGHTBAR_CMD_SEQ = 5,
720 LIGHTBAR_CMD_REG = 6,
721 LIGHTBAR_CMD_RGB = 7,
722 LIGHTBAR_CMD_GET_SEQ = 8,
723 LIGHTBAR_CMD_DEMO = 9,
724 LIGHTBAR_CMD_GET_PARAMS = 10,
725 LIGHTBAR_CMD_SET_PARAMS = 11,
726 LIGHTBAR_NUM_CMDS
727};
728
729/*****************************************************************************/
730/* Verified boot commands */
731
732/*
733 * Note: command code 0x29 version 0 was VBOOT_CMD in Link EVT; it may be
734 * reused for other purposes with version > 0.
735 */
736
737/* Verified boot hash command */
738#define EC_CMD_VBOOT_HASH 0x2A
739
740struct ec_params_vboot_hash {
741 uint8_t cmd; /* enum ec_vboot_hash_cmd */
742 uint8_t hash_type; /* enum ec_vboot_hash_type */
743 uint8_t nonce_size; /* Nonce size; may be 0 */
744 uint8_t reserved0; /* Reserved; set 0 */
745 uint32_t offset; /* Offset in flash to hash */
746 uint32_t size; /* Number of bytes to hash */
747 uint8_t nonce_data[64]; /* Nonce data; ignored if nonce_size=0 */
748} __packed;
749
750struct ec_response_vboot_hash {
751 uint8_t status; /* enum ec_vboot_hash_status */
752 uint8_t hash_type; /* enum ec_vboot_hash_type */
753 uint8_t digest_size; /* Size of hash digest in bytes */
754 uint8_t reserved0; /* Ignore; will be 0 */
755 uint32_t offset; /* Offset in flash which was hashed */
756 uint32_t size; /* Number of bytes hashed */
757 uint8_t hash_digest[64]; /* Hash digest data */
758} __packed;
759
760enum ec_vboot_hash_cmd {
761 EC_VBOOT_HASH_GET = 0, /* Get current hash status */
762 EC_VBOOT_HASH_ABORT = 1, /* Abort calculating current hash */
763 EC_VBOOT_HASH_START = 2, /* Start computing a new hash */
764 EC_VBOOT_HASH_RECALC = 3, /* Synchronously compute a new hash */
765};
766
767enum ec_vboot_hash_type {
768 EC_VBOOT_HASH_TYPE_SHA256 = 0, /* SHA-256 */
769};
770
771enum ec_vboot_hash_status {
772 EC_VBOOT_HASH_STATUS_NONE = 0, /* No hash (not started, or aborted) */
773 EC_VBOOT_HASH_STATUS_DONE = 1, /* Finished computing a hash */
774 EC_VBOOT_HASH_STATUS_BUSY = 2, /* Busy computing a hash */
775};
776
777/*
778 * Special values for offset for EC_VBOOT_HASH_START and EC_VBOOT_HASH_RECALC.
779 * If one of these is specified, the EC will automatically update offset and
780 * size to the correct values for the specified image (RO or RW).
781 */
782#define EC_VBOOT_HASH_OFFSET_RO 0xfffffffe
783#define EC_VBOOT_HASH_OFFSET_RW 0xfffffffd
784
785/*****************************************************************************/
786/* USB charging control commands */
787
788/* Set USB port charging mode */
789#define EC_CMD_USB_CHARGE_SET_MODE 0x30
790
791struct ec_params_usb_charge_set_mode {
792 uint8_t usb_port_id;
793 uint8_t mode;
794} __packed;
795
796/*****************************************************************************/
797/* Persistent storage for host */
798
799/* Maximum bytes that can be read/written in a single command */
800#define EC_PSTORE_SIZE_MAX 64
801
802/* Get persistent storage info */
803#define EC_CMD_PSTORE_INFO 0x40
804
805struct ec_response_pstore_info {
806 /* Persistent storage size, in bytes */
807 uint32_t pstore_size;
808 /* Access size; read/write offset and size must be a multiple of this */
809 uint32_t access_size;
810} __packed;
811
812/*
813 * Read persistent storage
814 *
815 * Response is params.size bytes of data.
816 */
817#define EC_CMD_PSTORE_READ 0x41
818
819struct ec_params_pstore_read {
820 uint32_t offset; /* Byte offset to read */
821 uint32_t size; /* Size to read in bytes */
822} __packed;
823
824/* Write persistent storage */
825#define EC_CMD_PSTORE_WRITE 0x42
826
827struct ec_params_pstore_write {
828 uint32_t offset; /* Byte offset to write */
829 uint32_t size; /* Size to write in bytes */
830 uint8_t data[EC_PSTORE_SIZE_MAX];
831} __packed;
832
833/*****************************************************************************/
834/* Real-time clock */
835
836/* RTC params and response structures */
837struct ec_params_rtc {
838 uint32_t time;
839} __packed;
840
841struct ec_response_rtc {
842 uint32_t time;
843} __packed;
844
845/* These use ec_response_rtc */
846#define EC_CMD_RTC_GET_VALUE 0x44
847#define EC_CMD_RTC_GET_ALARM 0x45
848
849/* These all use ec_params_rtc */
850#define EC_CMD_RTC_SET_VALUE 0x46
851#define EC_CMD_RTC_SET_ALARM 0x47
852
853/*****************************************************************************/
854/* Port80 log access */
855
856/* Get last port80 code from previous boot */
857#define EC_CMD_PORT80_LAST_BOOT 0x48
858
859struct ec_response_port80_last_boot {
860 uint16_t code;
861} __packed;
862
863/*****************************************************************************/
864/* Thermal engine commands */
865
866/* Set thershold value */
867#define EC_CMD_THERMAL_SET_THRESHOLD 0x50
868
869struct ec_params_thermal_set_threshold {
870 uint8_t sensor_type;
871 uint8_t threshold_id;
872 uint16_t value;
873} __packed;
874
875/* Get threshold value */
876#define EC_CMD_THERMAL_GET_THRESHOLD 0x51
877
878struct ec_params_thermal_get_threshold {
879 uint8_t sensor_type;
880 uint8_t threshold_id;
881} __packed;
882
883struct ec_response_thermal_get_threshold {
884 uint16_t value;
885} __packed;
886
887/* Toggle automatic fan control */
888#define EC_CMD_THERMAL_AUTO_FAN_CTRL 0x52
889
890/* Get TMP006 calibration data */
891#define EC_CMD_TMP006_GET_CALIBRATION 0x53
892
893struct ec_params_tmp006_get_calibration {
894 uint8_t index;
895} __packed;
896
897struct ec_response_tmp006_get_calibration {
898 float s0;
899 float b0;
900 float b1;
901 float b2;
902} __packed;
903
904/* Set TMP006 calibration data */
905#define EC_CMD_TMP006_SET_CALIBRATION 0x54
906
907struct ec_params_tmp006_set_calibration {
908 uint8_t index;
909 uint8_t reserved[3]; /* Reserved; set 0 */
910 float s0;
911 float b0;
912 float b1;
913 float b2;
914} __packed;
915
916/*****************************************************************************/
917/* CROS_EC - Matrix KeyBoard Protocol */
918
919/*
920 * Read key state
921 *
922 * Returns raw data for keyboard cols; see ec_response_cros_ec_info.cols for
923 * expected response size.
924 */
925#define EC_CMD_CROS_EC_STATE 0x60
926
927/* Provide information about the matrix : number of rows and columns */
928#define EC_CMD_CROS_EC_INFO 0x61
929
930struct ec_response_cros_ec_info {
931 uint32_t rows;
932 uint32_t cols;
933 uint8_t switches;
934} __packed;
935
936/* Simulate key press */
937#define EC_CMD_CROS_EC_SIMULATE_KEY 0x62
938
939struct ec_params_cros_ec_simulate_key {
940 uint8_t col;
941 uint8_t row;
942 uint8_t pressed;
943} __packed;
944
945/* Configure keyboard scanning */
946#define EC_CMD_CROS_EC_SET_CONFIG 0x64
947#define EC_CMD_CROS_EC_GET_CONFIG 0x65
948
949/* flags */
950enum cros_ec_config_flags {
951 EC_CROS_EC_FLAGS_ENABLE = 1, /* Enable keyboard scanning */
952};
953
954enum cros_ec_config_valid {
955 EC_CROS_EC_VALID_SCAN_PERIOD = 1 << 0,
956 EC_CROS_EC_VALID_POLL_TIMEOUT = 1 << 1,
957 EC_CROS_EC_VALID_MIN_POST_SCAN_DELAY = 1 << 3,
958 EC_CROS_EC_VALID_OUTPUT_SETTLE = 1 << 4,
959 EC_CROS_EC_VALID_DEBOUNCE_DOWN = 1 << 5,
960 EC_CROS_EC_VALID_DEBOUNCE_UP = 1 << 6,
961 EC_CROS_EC_VALID_FIFO_MAX_DEPTH = 1 << 7,
962};
963
964/* Configuration for our key scanning algorithm */
965struct ec_cros_ec_config {
966 uint32_t valid_mask; /* valid fields */
967 uint8_t flags; /* some flags (enum cros_ec_config_flags) */
968 uint8_t valid_flags; /* which flags are valid */
969 uint16_t scan_period_us; /* period between start of scans */
970 /* revert to interrupt mode after no activity for this long */
971 uint32_t poll_timeout_us;
972 /*
973 * minimum post-scan relax time. Once we finish a scan we check
974 * the time until we are due to start the next one. If this time is
975 * shorter this field, we use this instead.
976 */
977 uint16_t min_post_scan_delay_us;
978 /* delay between setting up output and waiting for it to settle */
979 uint16_t output_settle_us;
980 uint16_t debounce_down_us; /* time for debounce on key down */
981 uint16_t debounce_up_us; /* time for debounce on key up */
982 /* maximum depth to allow for fifo (0 = no keyscan output) */
983 uint8_t fifo_max_depth;
984} __packed;
985
986struct ec_params_cros_ec_set_config {
987 struct ec_cros_ec_config config;
988} __packed;
989
990struct ec_response_cros_ec_get_config {
991 struct ec_cros_ec_config config;
992} __packed;
993
994/* Run the key scan emulation */
995#define EC_CMD_KEYSCAN_SEQ_CTRL 0x66
996
997enum ec_keyscan_seq_cmd {
998 EC_KEYSCAN_SEQ_STATUS = 0, /* Get status information */
999 EC_KEYSCAN_SEQ_CLEAR = 1, /* Clear sequence */
1000 EC_KEYSCAN_SEQ_ADD = 2, /* Add item to sequence */
1001 EC_KEYSCAN_SEQ_START = 3, /* Start running sequence */
1002 EC_KEYSCAN_SEQ_COLLECT = 4, /* Collect sequence summary data */
1003};
1004
1005enum ec_collect_flags {
1006 /*
1007 * Indicates this scan was processed by the EC. Due to timing, some
1008 * scans may be skipped.
1009 */
1010 EC_KEYSCAN_SEQ_FLAG_DONE = 1 << 0,
1011};
1012
1013struct ec_collect_item {
1014 uint8_t flags; /* some flags (enum ec_collect_flags) */
1015};
1016
1017struct ec_params_keyscan_seq_ctrl {
1018 uint8_t cmd; /* Command to send (enum ec_keyscan_seq_cmd) */
1019 union {
1020 struct {
1021 uint8_t active; /* still active */
1022 uint8_t num_items; /* number of items */
1023 /* Current item being presented */
1024 uint8_t cur_item;
1025 } status;
1026 struct {
1027 /*
1028 * Absolute time for this scan, measured from the
1029 * start of the sequence.
1030 */
1031 uint32_t time_us;
1032 uint8_t scan[0]; /* keyscan data */
1033 } add;
1034 struct {
1035 uint8_t start_item; /* First item to return */
1036 uint8_t num_items; /* Number of items to return */
1037 } collect;
1038 };
1039} __packed;
1040
1041struct ec_result_keyscan_seq_ctrl {
1042 union {
1043 struct {
1044 uint8_t num_items; /* Number of items */
1045 /* Data for each item */
1046 struct ec_collect_item item[0];
1047 } collect;
1048 };
1049} __packed;
1050
1051/*****************************************************************************/
1052/* Temperature sensor commands */
1053
1054/* Read temperature sensor info */
1055#define EC_CMD_TEMP_SENSOR_GET_INFO 0x70
1056
1057struct ec_params_temp_sensor_get_info {
1058 uint8_t id;
1059} __packed;
1060
1061struct ec_response_temp_sensor_get_info {
1062 char sensor_name[32];
1063 uint8_t sensor_type;
1064} __packed;
1065
1066/*****************************************************************************/
1067
1068/*
1069 * Note: host commands 0x80 - 0x87 are reserved to avoid conflict with ACPI
1070 * commands accidentally sent to the wrong interface. See the ACPI section
1071 * below.
1072 */
1073
1074/*****************************************************************************/
1075/* Host event commands */
1076
1077/*
1078 * Host event mask params and response structures, shared by all of the host
1079 * event commands below.
1080 */
1081struct ec_params_host_event_mask {
1082 uint32_t mask;
1083} __packed;
1084
1085struct ec_response_host_event_mask {
1086 uint32_t mask;
1087} __packed;
1088
1089/* These all use ec_response_host_event_mask */
1090#define EC_CMD_HOST_EVENT_GET_B 0x87
1091#define EC_CMD_HOST_EVENT_GET_SMI_MASK 0x88
1092#define EC_CMD_HOST_EVENT_GET_SCI_MASK 0x89
1093#define EC_CMD_HOST_EVENT_GET_WAKE_MASK 0x8d
1094
1095/* These all use ec_params_host_event_mask */
1096#define EC_CMD_HOST_EVENT_SET_SMI_MASK 0x8a
1097#define EC_CMD_HOST_EVENT_SET_SCI_MASK 0x8b
1098#define EC_CMD_HOST_EVENT_CLEAR 0x8c
1099#define EC_CMD_HOST_EVENT_SET_WAKE_MASK 0x8e
1100#define EC_CMD_HOST_EVENT_CLEAR_B 0x8f
1101
1102/*****************************************************************************/
1103/* Switch commands */
1104
1105/* Enable/disable LCD backlight */
1106#define EC_CMD_SWITCH_ENABLE_BKLIGHT 0x90
1107
1108struct ec_params_switch_enable_backlight {
1109 uint8_t enabled;
1110} __packed;
1111
1112/* Enable/disable WLAN/Bluetooth */
1113#define EC_CMD_SWITCH_ENABLE_WIRELESS 0x91
1114
1115struct ec_params_switch_enable_wireless {
1116 uint8_t enabled;
1117} __packed;
1118
1119/*****************************************************************************/
1120/* GPIO commands. Only available on EC if write protect has been disabled. */
1121
1122/* Set GPIO output value */
1123#define EC_CMD_GPIO_SET 0x92
1124
1125struct ec_params_gpio_set {
1126 char name[32];
1127 uint8_t val;
1128} __packed;
1129
1130/* Get GPIO value */
1131#define EC_CMD_GPIO_GET 0x93
1132
1133struct ec_params_gpio_get {
1134 char name[32];
1135} __packed;
1136struct ec_response_gpio_get {
1137 uint8_t val;
1138} __packed;
1139
1140/*****************************************************************************/
1141/* I2C commands. Only available when flash write protect is unlocked. */
1142
1143/* Read I2C bus */
1144#define EC_CMD_I2C_READ 0x94
1145
1146struct ec_params_i2c_read {
1147 uint16_t addr;
1148 uint8_t read_size; /* Either 8 or 16. */
1149 uint8_t port;
1150 uint8_t offset;
1151} __packed;
1152struct ec_response_i2c_read {
1153 uint16_t data;
1154} __packed;
1155
1156/* Write I2C bus */
1157#define EC_CMD_I2C_WRITE 0x95
1158
1159struct ec_params_i2c_write {
1160 uint16_t data;
1161 uint16_t addr;
1162 uint8_t write_size; /* Either 8 or 16. */
1163 uint8_t port;
1164 uint8_t offset;
1165} __packed;
1166
1167/*****************************************************************************/
1168/* Charge state commands. Only available when flash write protect unlocked. */
1169
1170/* Force charge state machine to stop in idle mode */
1171#define EC_CMD_CHARGE_FORCE_IDLE 0x96
1172
1173struct ec_params_force_idle {
1174 uint8_t enabled;
1175} __packed;
1176
1177/*****************************************************************************/
1178/* Console commands. Only available when flash write protect is unlocked. */
1179
1180/* Snapshot console output buffer for use by EC_CMD_CONSOLE_READ. */
1181#define EC_CMD_CONSOLE_SNAPSHOT 0x97
1182
1183/*
1184 * Read next chunk of data from saved snapshot.
1185 *
1186 * Response is null-terminated string. Empty string, if there is no more
1187 * remaining output.
1188 */
1189#define EC_CMD_CONSOLE_READ 0x98
1190
1191/*****************************************************************************/
1192
1193/*
1194 * Cut off battery power output if the battery supports.
1195 *
1196 * For unsupported battery, just don't implement this command and lets EC
1197 * return EC_RES_INVALID_COMMAND.
1198 */
1199#define EC_CMD_BATTERY_CUT_OFF 0x99
1200
1201/*****************************************************************************/
1202/* USB port mux control. */
1203
1204/*
1205 * Switch USB mux or return to automatic switching.
1206 */
1207#define EC_CMD_USB_MUX 0x9a
1208
1209struct ec_params_usb_mux {
1210 uint8_t mux;
1211} __packed;
1212
1213/*****************************************************************************/
1214/* LDOs / FETs control. */
1215
1216enum ec_ldo_state {
1217 EC_LDO_STATE_OFF = 0, /* the LDO / FET is shut down */
1218 EC_LDO_STATE_ON = 1, /* the LDO / FET is ON / providing power */
1219};
1220
1221/*
1222 * Switch on/off a LDO.
1223 */
1224#define EC_CMD_LDO_SET 0x9b
1225
1226struct ec_params_ldo_set {
1227 uint8_t index;
1228 uint8_t state;
1229} __packed;
1230
1231/*
1232 * Get LDO state.
1233 */
1234#define EC_CMD_LDO_GET 0x9c
1235
1236struct ec_params_ldo_get {
1237 uint8_t index;
1238} __packed;
1239
1240struct ec_response_ldo_get {
1241 uint8_t state;
1242} __packed;
1243
1244/*****************************************************************************/
1245/* Temporary debug commands. TODO: remove this crosbug.com/p/13849 */
1246
1247/*
1248 * Dump charge state machine context.
1249 *
1250 * Response is a binary dump of charge state machine context.
1251 */
1252#define EC_CMD_CHARGE_DUMP 0xa0
1253
1254/*
1255 * Set maximum battery charging current.
1256 */
1257#define EC_CMD_CHARGE_CURRENT_LIMIT 0xa1
1258
1259struct ec_params_current_limit {
1260 uint32_t limit;
1261} __packed;
1262
1263/*****************************************************************************/
1264/* Smart battery pass-through */
1265
1266/* Get / Set 16-bit smart battery registers */
1267#define EC_CMD_SB_READ_WORD 0xb0
1268#define EC_CMD_SB_WRITE_WORD 0xb1
1269
1270/* Get / Set string smart battery parameters
1271 * formatted as SMBUS "block".
1272 */
1273#define EC_CMD_SB_READ_BLOCK 0xb2
1274#define EC_CMD_SB_WRITE_BLOCK 0xb3
1275
1276struct ec_params_sb_rd {
1277 uint8_t reg;
1278} __packed;
1279
1280struct ec_response_sb_rd_word {
1281 uint16_t value;
1282} __packed;
1283
1284struct ec_params_sb_wr_word {
1285 uint8_t reg;
1286 uint16_t value;
1287} __packed;
1288
1289struct ec_response_sb_rd_block {
1290 uint8_t data[32];
1291} __packed;
1292
1293struct ec_params_sb_wr_block {
1294 uint8_t reg;
1295 uint16_t data[32];
1296} __packed;
1297
1298/*****************************************************************************/
1299/* System commands */
1300
1301/*
1302 * TODO: this is a confusing name, since it doesn't necessarily reboot the EC.
1303 * Rename to "set image" or something similar.
1304 */
1305#define EC_CMD_REBOOT_EC 0xd2
1306
1307/* Command */
1308enum ec_reboot_cmd {
1309 EC_REBOOT_CANCEL = 0, /* Cancel a pending reboot */
1310 EC_REBOOT_JUMP_RO = 1, /* Jump to RO without rebooting */
1311 EC_REBOOT_JUMP_RW = 2, /* Jump to RW without rebooting */
1312 /* (command 3 was jump to RW-B) */
1313 EC_REBOOT_COLD = 4, /* Cold-reboot */
1314 EC_REBOOT_DISABLE_JUMP = 5, /* Disable jump until next reboot */
1315 EC_REBOOT_HIBERNATE = 6 /* Hibernate EC */
1316};
1317
1318/* Flags for ec_params_reboot_ec.reboot_flags */
1319#define EC_REBOOT_FLAG_RESERVED0 (1 << 0) /* Was recovery request */
1320#define EC_REBOOT_FLAG_ON_AP_SHUTDOWN (1 << 1) /* Reboot after AP shutdown */
1321
1322struct ec_params_reboot_ec {
1323 uint8_t cmd; /* enum ec_reboot_cmd */
1324 uint8_t flags; /* See EC_REBOOT_FLAG_* */
1325} __packed;
1326
1327/*
1328 * Get information on last EC panic.
1329 *
1330 * Returns variable-length platform-dependent panic information. See panic.h
1331 * for details.
1332 */
1333#define EC_CMD_GET_PANIC_INFO 0xd3
1334
1335/*****************************************************************************/
1336/*
1337 * ACPI commands
1338 *
1339 * These are valid ONLY on the ACPI command/data port.
1340 */
1341
1342/*
1343 * ACPI Read Embedded Controller
1344 *
1345 * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
1346 *
1347 * Use the following sequence:
1348 *
1349 * - Write EC_CMD_ACPI_READ to EC_LPC_ADDR_ACPI_CMD
1350 * - Wait for EC_LPC_CMDR_PENDING bit to clear
1351 * - Write address to EC_LPC_ADDR_ACPI_DATA
1352 * - Wait for EC_LPC_CMDR_DATA bit to set
1353 * - Read value from EC_LPC_ADDR_ACPI_DATA
1354 */
1355#define EC_CMD_ACPI_READ 0x80
1356
1357/*
1358 * ACPI Write Embedded Controller
1359 *
1360 * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
1361 *
1362 * Use the following sequence:
1363 *
1364 * - Write EC_CMD_ACPI_WRITE to EC_LPC_ADDR_ACPI_CMD
1365 * - Wait for EC_LPC_CMDR_PENDING bit to clear
1366 * - Write address to EC_LPC_ADDR_ACPI_DATA
1367 * - Wait for EC_LPC_CMDR_PENDING bit to clear
1368 * - Write value to EC_LPC_ADDR_ACPI_DATA
1369 */
1370#define EC_CMD_ACPI_WRITE 0x81
1371
1372/*
1373 * ACPI Query Embedded Controller
1374 *
1375 * This clears the lowest-order bit in the currently pending host events, and
1376 * sets the result code to the 1-based index of the bit (event 0x00000001 = 1,
1377 * event 0x80000000 = 32), or 0 if no event was pending.
1378 */
1379#define EC_CMD_ACPI_QUERY_EVENT 0x84
1380
1381/* Valid addresses in ACPI memory space, for read/write commands */
1382/* Memory space version; set to EC_ACPI_MEM_VERSION_CURRENT */
1383#define EC_ACPI_MEM_VERSION 0x00
1384/*
1385 * Test location; writing value here updates test compliment byte to (0xff -
1386 * value).
1387 */
1388#define EC_ACPI_MEM_TEST 0x01
1389/* Test compliment; writes here are ignored. */
1390#define EC_ACPI_MEM_TEST_COMPLIMENT 0x02
1391/* Keyboard backlight brightness percent (0 - 100) */
1392#define EC_ACPI_MEM_KEYBOARD_BACKLIGHT 0x03
1393
1394/* Current version of ACPI memory address space */
1395#define EC_ACPI_MEM_VERSION_CURRENT 1
1396
1397
1398/*****************************************************************************/
1399/*
1400 * Special commands
1401 *
1402 * These do not follow the normal rules for commands. See each command for
1403 * details.
1404 */
1405
1406/*
1407 * Reboot NOW
1408 *
1409 * This command will work even when the EC LPC interface is busy, because the
1410 * reboot command is processed at interrupt level. Note that when the EC
1411 * reboots, the host will reboot too, so there is no response to this command.
1412 *
1413 * Use EC_CMD_REBOOT_EC to reboot the EC more politely.
1414 */
1415#define EC_CMD_REBOOT 0xd1 /* Think "die" */
1416
1417/*
1418 * Resend last response (not supported on LPC).
1419 *
1420 * Returns EC_RES_UNAVAILABLE if there is no response available - for example,
1421 * there was no previous command, or the previous command's response was too
1422 * big to save.
1423 */
1424#define EC_CMD_RESEND_RESPONSE 0xdb
1425
1426/*
1427 * This header byte on a command indicate version 0. Any header byte less
1428 * than this means that we are talking to an old EC which doesn't support
1429 * versioning. In that case, we assume version 0.
1430 *
1431 * Header bytes greater than this indicate a later version. For example,
1432 * EC_CMD_VERSION0 + 1 means we are using version 1.
1433 *
1434 * The old EC interface must not use commands 0dc or higher.
1435 */
1436#define EC_CMD_VERSION0 0xdc
1437
1438#endif /* !__ACPI__ */
1439
1440#endif /* __CROS_EC_COMMANDS_H */