blob: ff7f782742a86f507a5dc1148a363cfe27966e72 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glassdf93d902014-02-27 13:26:12 -07002/*
3 * Chromium OS cros_ec driver - sandbox emulation
4 *
5 * Copyright (c) 2013 The Chromium OS Authors.
Simon Glassdf93d902014-02-27 13:26:12 -07006 */
7
8#include <common.h>
9#include <cros_ec.h>
Simon Glassbe995a82014-10-13 23:42:15 -060010#include <dm.h>
Simon Glassdf93d902014-02-27 13:26:12 -070011#include <ec_commands.h>
12#include <errno.h>
13#include <hash.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060014#include <log.h>
Simon Glassdf93d902014-02-27 13:26:12 -070015#include <os.h>
Jeroen Hofstee2b9912e2014-06-12 22:27:12 +020016#include <u-boot/sha256.h>
Simon Glassdf93d902014-02-27 13:26:12 -070017#include <spi.h>
Simon Glass21d651f2020-02-03 07:36:18 -070018#include <asm/malloc.h>
Simon Glassdf93d902014-02-27 13:26:12 -070019#include <asm/state.h>
20#include <asm/sdl.h>
21#include <linux/input.h>
22
23/*
24 * Ultimately it shold be possible to connect an Chrome OS EC emulation
25 * to U-Boot and remove all of this code. But this provides a test
26 * environment for bringing up chromeos_sandbox and demonstrating its
27 * utility.
28 *
29 * This emulation includes the following:
30 *
31 * 1. Emulation of the keyboard, by converting keypresses received from SDL
32 * into key scan data, passed back from the EC as key scan messages. The
33 * key layout is read from the device tree.
34 *
35 * 2. Emulation of vboot context - so this can be read/written as required.
36 *
37 * 3. Save/restore of EC state, so that the vboot context, flash memory
38 * contents and current image can be preserved across boots. This is important
39 * since the EC is supposed to continue running even if the AP resets.
40 *
41 * 4. Some event support, in particular allowing Escape to be pressed on boot
42 * to enter recovery mode. The EC passes this to U-Boot through the normal
43 * event message.
44 *
45 * 5. Flash read/write/erase support, so that software sync works. The
46 * protect messages are supported but no protection is implemented.
47 *
48 * 6. Hashing of the EC image, again to support software sync.
49 *
50 * Other features can be added, although a better path is probably to link
51 * the EC image in with U-Boot (Vic has demonstrated a prototype for this).
52 */
53
Simon Glassdf93d902014-02-27 13:26:12 -070054#define KEYBOARD_ROWS 8
55#define KEYBOARD_COLS 13
56
57/* A single entry of the key matrix */
58struct ec_keymatrix_entry {
59 int row; /* key matrix row */
60 int col; /* key matrix column */
61 int keycode; /* corresponding linux key code */
62};
63
64/**
65 * struct ec_state - Information about the EC state
66 *
67 * @vbnv_context: Vboot context data stored by EC
68 * @ec_config: FDT config information about the EC (e.g. flashmap)
69 * @flash_data: Contents of flash memory
70 * @flash_data_len: Size of flash memory
71 * @current_image: Current image the EC is running
72 * @matrix_count: Number of keys to decode in matrix
73 * @matrix: Information about keyboard matrix
74 * @keyscan: Current keyscan information (bit set for each row/column pressed)
75 * @recovery_req: Keyboard recovery requested
76 */
77struct ec_state {
Simon Glass72ef8bf2018-11-06 15:21:22 -070078 u8 vbnv_context[EC_VBNV_BLOCK_SIZE_V2];
Simon Glassdf93d902014-02-27 13:26:12 -070079 struct fdt_cros_ec ec_config;
80 uint8_t *flash_data;
81 int flash_data_len;
82 enum ec_current_image current_image;
83 int matrix_count;
84 struct ec_keymatrix_entry *matrix; /* the key matrix info */
85 uint8_t keyscan[KEYBOARD_COLS];
86 bool recovery_req;
Simon Glassbe995a82014-10-13 23:42:15 -060087} s_state, *g_state;
Simon Glassdf93d902014-02-27 13:26:12 -070088
89/**
90 * cros_ec_read_state() - read the sandbox EC state from the state file
91 *
92 * If data is available, then blob and node will provide access to it. If
93 * not this function sets up an empty EC.
94 *
95 * @param blob: Pointer to device tree blob, or NULL if no data to read
96 * @param node: Node offset to read from
97 */
98static int cros_ec_read_state(const void *blob, int node)
99{
100 struct ec_state *ec = &s_state;
101 const char *prop;
102 int len;
103
104 /* Set everything to defaults */
105 ec->current_image = EC_IMAGE_RO;
106 if (!blob)
107 return 0;
108
109 /* Read the data if available */
110 ec->current_image = fdtdec_get_int(blob, node, "current-image",
111 EC_IMAGE_RO);
112 prop = fdt_getprop(blob, node, "vbnv-context", &len);
113 if (prop && len == sizeof(ec->vbnv_context))
114 memcpy(ec->vbnv_context, prop, len);
115
116 prop = fdt_getprop(blob, node, "flash-data", &len);
117 if (prop) {
118 ec->flash_data_len = len;
Simon Glass21d651f2020-02-03 07:36:18 -0700119 ec->flash_data = malloc(len);
Simon Glassdf93d902014-02-27 13:26:12 -0700120 if (!ec->flash_data)
121 return -ENOMEM;
122 memcpy(ec->flash_data, prop, len);
123 debug("%s: Loaded EC flash data size %#x\n", __func__, len);
124 }
125
126 return 0;
127}
128
129/**
130 * cros_ec_write_state() - Write out our state to the state file
131 *
132 * The caller will ensure that there is a node ready for the state. The node
133 * may already contain the old state, in which case it is overridden.
134 *
135 * @param blob: Device tree blob holding state
136 * @param node: Node to write our state into
137 */
138static int cros_ec_write_state(void *blob, int node)
139{
Simon Glassbe995a82014-10-13 23:42:15 -0600140 struct ec_state *ec = g_state;
Simon Glassdf93d902014-02-27 13:26:12 -0700141
142 /* We are guaranteed enough space to write basic properties */
143 fdt_setprop_u32(blob, node, "current-image", ec->current_image);
144 fdt_setprop(blob, node, "vbnv-context", ec->vbnv_context,
145 sizeof(ec->vbnv_context));
146 return state_setprop(node, "flash-data", ec->flash_data,
147 ec->ec_config.flash.length);
148}
149
150SANDBOX_STATE_IO(cros_ec, "google,cros-ec", cros_ec_read_state,
151 cros_ec_write_state);
152
153/**
154 * Return the number of bytes used in the specified image.
155 *
156 * This is the actual size of code+data in the image, as opposed to the
157 * amount of space reserved in flash for that image. This code is similar to
158 * that used by the real EC code base.
159 *
160 * @param ec Current emulated EC state
161 * @param entry Flash map entry containing the image to check
162 * @return actual image size in bytes, 0 if the image contains no content or
163 * error.
164 */
165static int get_image_used(struct ec_state *ec, struct fmap_entry *entry)
166{
167 int size;
168
169 /*
170 * Scan backwards looking for 0xea byte, which is by definition the
171 * last byte of the image. See ec.lds.S for how this is inserted at
172 * the end of the image.
173 */
174 for (size = entry->length - 1;
175 size > 0 && ec->flash_data[entry->offset + size] != 0xea;
176 size--)
177 ;
178
179 return size ? size + 1 : 0; /* 0xea byte IS part of the image */
180}
181
182/**
183 * Read the key matrix from the device tree
184 *
185 * Keymap entries in the fdt take the form of 0xRRCCKKKK where
186 * RR=Row CC=Column KKKK=Key Code
187 *
188 * @param ec Current emulated EC state
Simon Glassdf93d902014-02-27 13:26:12 -0700189 * @param node Keyboard node of device tree containing keyscan information
190 * @return 0 if ok, -1 on error
191 */
Simon Glass2ec9d172017-05-18 20:09:23 -0600192static int keyscan_read_fdt_matrix(struct ec_state *ec, ofnode node)
Simon Glassdf93d902014-02-27 13:26:12 -0700193{
194 const u32 *cell;
195 int upto;
196 int len;
197
Masahiro Yamada61e51ba2017-06-22 16:54:05 +0900198 cell = ofnode_get_property(node, "linux,keymap", &len);
Simon Glassdf93d902014-02-27 13:26:12 -0700199 ec->matrix_count = len / 4;
200 ec->matrix = calloc(ec->matrix_count, sizeof(*ec->matrix));
201 if (!ec->matrix) {
202 debug("%s: Out of memory for key matrix\n", __func__);
203 return -1;
204 }
205
206 /* Now read the data */
207 for (upto = 0; upto < ec->matrix_count; upto++) {
208 struct ec_keymatrix_entry *matrix = &ec->matrix[upto];
209 u32 word;
210
211 word = fdt32_to_cpu(*cell++);
212 matrix->row = word >> 24;
213 matrix->col = (word >> 16) & 0xff;
214 matrix->keycode = word & 0xffff;
215
216 /* Hard-code some sanity limits for now */
217 if (matrix->row >= KEYBOARD_ROWS ||
218 matrix->col >= KEYBOARD_COLS) {
219 debug("%s: Matrix pos out of range (%d,%d)\n",
220 __func__, matrix->row, matrix->col);
221 return -1;
222 }
223 }
224
225 if (upto != ec->matrix_count) {
226 debug("%s: Read mismatch from key matrix\n", __func__);
227 return -1;
228 }
229
230 return 0;
231}
232
233/**
234 * Return the next keyscan message contents
235 *
236 * @param ec Current emulated EC state
237 * @param scan Place to put keyscan bytes for the keyscan message (must hold
238 * enough space for a full keyscan)
239 * @return number of bytes of valid scan data
240 */
241static int cros_ec_keyscan(struct ec_state *ec, uint8_t *scan)
242{
243 const struct ec_keymatrix_entry *matrix;
244 int bytes = KEYBOARD_COLS;
245 int key[8]; /* allow up to 8 keys to be pressed at once */
246 int count;
247 int i;
248
249 memset(ec->keyscan, '\0', bytes);
250 count = sandbox_sdl_scan_keys(key, ARRAY_SIZE(key));
251
252 /* Look up keycode in matrix */
253 for (i = 0, matrix = ec->matrix; i < ec->matrix_count; i++, matrix++) {
254 bool found;
255 int j;
256
257 for (found = false, j = 0; j < count; j++) {
258 if (matrix->keycode == key[j])
259 found = true;
260 }
261
262 if (found) {
263 debug("%d: %d,%d\n", matrix->keycode, matrix->row,
264 matrix->col);
265 ec->keyscan[matrix->col] |= 1 << matrix->row;
266 }
267 }
268
269 memcpy(scan, ec->keyscan, bytes);
270 return bytes;
271}
272
273/**
274 * Process an emulated EC command
275 *
276 * @param ec Current emulated EC state
277 * @param req_hdr Pointer to request header
278 * @param req_data Pointer to body of request
279 * @param resp_hdr Pointer to place to put response header
280 * @param resp_data Pointer to place to put response data, if any
281 * @return length of response data, or 0 for no response data, or -1 on error
282 */
283static int process_cmd(struct ec_state *ec,
284 struct ec_host_request *req_hdr, const void *req_data,
285 struct ec_host_response *resp_hdr, void *resp_data)
286{
287 int len;
288
289 /* TODO(sjg@chromium.org): Check checksums */
290 debug("EC command %#0x\n", req_hdr->command);
291
292 switch (req_hdr->command) {
293 case EC_CMD_HELLO: {
294 const struct ec_params_hello *req = req_data;
295 struct ec_response_hello *resp = resp_data;
296
297 resp->out_data = req->in_data + 0x01020304;
298 len = sizeof(*resp);
299 break;
300 }
301 case EC_CMD_GET_VERSION: {
302 struct ec_response_get_version *resp = resp_data;
303
304 strcpy(resp->version_string_ro, "sandbox_ro");
305 strcpy(resp->version_string_rw, "sandbox_rw");
306 resp->current_image = ec->current_image;
307 debug("Current image %d\n", resp->current_image);
308 len = sizeof(*resp);
309 break;
310 }
311 case EC_CMD_VBNV_CONTEXT: {
312 const struct ec_params_vbnvcontext *req = req_data;
313 struct ec_response_vbnvcontext *resp = resp_data;
314
315 switch (req->op) {
316 case EC_VBNV_CONTEXT_OP_READ:
Simon Glasseafb4a52018-11-23 21:29:37 -0700317 /* TODO(sjg@chromium.org): Support full-size context */
Simon Glassdf93d902014-02-27 13:26:12 -0700318 memcpy(resp->block, ec->vbnv_context,
Simon Glasseafb4a52018-11-23 21:29:37 -0700319 EC_VBNV_BLOCK_SIZE);
320 len = 16;
Simon Glassdf93d902014-02-27 13:26:12 -0700321 break;
322 case EC_VBNV_CONTEXT_OP_WRITE:
Simon Glasseafb4a52018-11-23 21:29:37 -0700323 /* TODO(sjg@chromium.org): Support full-size context */
324 memcpy(ec->vbnv_context, req->block,
325 EC_VBNV_BLOCK_SIZE);
Simon Glassdf93d902014-02-27 13:26:12 -0700326 len = 0;
327 break;
328 default:
329 printf(" ** Unknown vbnv_context command %#02x\n",
330 req->op);
331 return -1;
332 }
333 break;
334 }
335 case EC_CMD_REBOOT_EC: {
336 const struct ec_params_reboot_ec *req = req_data;
337
338 printf("Request reboot type %d\n", req->cmd);
339 switch (req->cmd) {
340 case EC_REBOOT_DISABLE_JUMP:
341 len = 0;
342 break;
343 case EC_REBOOT_JUMP_RW:
344 ec->current_image = EC_IMAGE_RW;
345 len = 0;
346 break;
347 default:
348 puts(" ** Unknown type");
349 return -1;
350 }
351 break;
352 }
353 case EC_CMD_HOST_EVENT_GET_B: {
354 struct ec_response_host_event_mask *resp = resp_data;
355
356 resp->mask = 0;
357 if (ec->recovery_req) {
358 resp->mask |= EC_HOST_EVENT_MASK(
359 EC_HOST_EVENT_KEYBOARD_RECOVERY);
360 }
361
362 len = sizeof(*resp);
363 break;
364 }
365 case EC_CMD_VBOOT_HASH: {
366 const struct ec_params_vboot_hash *req = req_data;
367 struct ec_response_vboot_hash *resp = resp_data;
368 struct fmap_entry *entry;
369 int ret, size;
370
Simon Glass6f1c0432018-10-01 12:22:36 -0600371 entry = &ec->ec_config.region[EC_FLASH_REGION_ACTIVE];
Simon Glassdf93d902014-02-27 13:26:12 -0700372
373 switch (req->cmd) {
374 case EC_VBOOT_HASH_RECALC:
375 case EC_VBOOT_HASH_GET:
376 size = SHA256_SUM_LEN;
377 len = get_image_used(ec, entry);
378 ret = hash_block("sha256",
379 ec->flash_data + entry->offset,
380 len, resp->hash_digest, &size);
381 if (ret) {
382 printf(" ** hash_block() failed\n");
383 return -1;
384 }
385 resp->status = EC_VBOOT_HASH_STATUS_DONE;
386 resp->hash_type = EC_VBOOT_HASH_TYPE_SHA256;
387 resp->digest_size = size;
388 resp->reserved0 = 0;
389 resp->offset = entry->offset;
390 resp->size = len;
391 len = sizeof(*resp);
392 break;
393 default:
394 printf(" ** EC_CMD_VBOOT_HASH: Unknown command %d\n",
395 req->cmd);
396 return -1;
397 }
398 break;
399 }
400 case EC_CMD_FLASH_PROTECT: {
401 const struct ec_params_flash_protect *req = req_data;
402 struct ec_response_flash_protect *resp = resp_data;
403 uint32_t expect = EC_FLASH_PROTECT_ALL_NOW |
404 EC_FLASH_PROTECT_ALL_AT_BOOT;
405
406 printf("mask=%#x, flags=%#x\n", req->mask, req->flags);
407 if (req->flags == expect || req->flags == 0) {
408 resp->flags = req->flags ? EC_FLASH_PROTECT_ALL_NOW :
409 0;
410 resp->valid_flags = EC_FLASH_PROTECT_ALL_NOW;
411 resp->writable_flags = 0;
412 len = sizeof(*resp);
413 } else {
414 puts(" ** unexpected flash protect request\n");
415 return -1;
416 }
417 break;
418 }
419 case EC_CMD_FLASH_REGION_INFO: {
420 const struct ec_params_flash_region_info *req = req_data;
421 struct ec_response_flash_region_info *resp = resp_data;
422 struct fmap_entry *entry;
423
424 switch (req->region) {
425 case EC_FLASH_REGION_RO:
Simon Glass6f1c0432018-10-01 12:22:36 -0600426 case EC_FLASH_REGION_ACTIVE:
Simon Glassdf93d902014-02-27 13:26:12 -0700427 case EC_FLASH_REGION_WP_RO:
Simon Glassbe995a82014-10-13 23:42:15 -0600428 entry = &ec->ec_config.region[req->region];
Simon Glassdf93d902014-02-27 13:26:12 -0700429 resp->offset = entry->offset;
430 resp->size = entry->length;
431 len = sizeof(*resp);
432 printf("EC flash region %d: offset=%#x, size=%#x\n",
433 req->region, resp->offset, resp->size);
434 break;
435 default:
436 printf("** Unknown flash region %d\n", req->region);
437 return -1;
438 }
439 break;
440 }
441 case EC_CMD_FLASH_ERASE: {
442 const struct ec_params_flash_erase *req = req_data;
443
444 memset(ec->flash_data + req->offset,
445 ec->ec_config.flash_erase_value,
446 req->size);
447 len = 0;
448 break;
449 }
450 case EC_CMD_FLASH_WRITE: {
451 const struct ec_params_flash_write *req = req_data;
452
453 memcpy(ec->flash_data + req->offset, req + 1, req->size);
454 len = 0;
455 break;
456 }
457 case EC_CMD_MKBP_STATE:
458 len = cros_ec_keyscan(ec, resp_data);
459 break;
Simon Glassb5279242015-05-04 11:31:09 -0600460 case EC_CMD_ENTERING_MODE:
Daniel Schwierzeck3f51a772015-11-06 14:15:37 +0100461 len = 0;
Simon Glassb5279242015-05-04 11:31:09 -0600462 break;
Heinrich Schuchardta3e45852020-11-09 21:34:25 +0100463 case EC_CMD_GET_NEXT_EVENT:
464 /*
465 * TODO:
466 * This driver emulates an old keyboard device supporting
467 * EC_CMD_MKBP_STATE. Current Chrome OS keyboards use
468 * EC_CMD_GET_NEXT_EVENT. Cf.
469 * "mkbp: Add support for buttons and switches"
470 * https://chromium.googlesource.com/chromiumos/platform/ec/+/87a071941b89e3f7fd3eb329b682e60b3fbd6c73
471 */
472 return -EC_RES_INVALID_COMMAND;
Simon Glassdf93d902014-02-27 13:26:12 -0700473 default:
474 printf(" ** Unknown EC command %#02x\n", req_hdr->command);
475 return -1;
476 }
477
478 return len;
479}
480
Simon Glassbe995a82014-10-13 23:42:15 -0600481int cros_ec_sandbox_packet(struct udevice *udev, int out_bytes, int in_bytes)
482{
Simon Glasse564f052015-03-05 12:25:20 -0700483 struct cros_ec_dev *dev = dev_get_uclass_priv(udev);
Simon Glassbe995a82014-10-13 23:42:15 -0600484 struct ec_state *ec = dev_get_priv(dev->dev);
Simon Glassdf93d902014-02-27 13:26:12 -0700485 struct ec_host_request *req_hdr = (struct ec_host_request *)dev->dout;
486 const void *req_data = req_hdr + 1;
487 struct ec_host_response *resp_hdr = (struct ec_host_response *)dev->din;
488 void *resp_data = resp_hdr + 1;
489 int len;
490
Simon Glassbe995a82014-10-13 23:42:15 -0600491 len = process_cmd(ec, req_hdr, req_data, resp_hdr, resp_data);
Simon Glassdf93d902014-02-27 13:26:12 -0700492 if (len < 0)
493 return len;
494
495 resp_hdr->struct_version = 3;
496 resp_hdr->result = EC_RES_SUCCESS;
497 resp_hdr->data_len = len;
498 resp_hdr->reserved = 0;
499 len += sizeof(*resp_hdr);
500 resp_hdr->checksum = 0;
501 resp_hdr->checksum = (uint8_t)
502 -cros_ec_calc_checksum((const uint8_t *)resp_hdr, len);
503
504 return in_bytes;
505}
506
Simon Glass6322a7b2018-10-01 12:22:22 -0600507void cros_ec_check_keyboard(struct udevice *dev)
Simon Glassdf93d902014-02-27 13:26:12 -0700508{
Simon Glass6322a7b2018-10-01 12:22:22 -0600509 struct ec_state *ec = dev_get_priv(dev);
Simon Glassdf93d902014-02-27 13:26:12 -0700510 ulong start;
511
512 printf("Press keys for EC to detect on reset (ESC=recovery)...");
513 start = get_timer(0);
514 while (get_timer(start) < 1000)
515 ;
516 putc('\n');
517 if (!sandbox_sdl_key_pressed(KEY_ESC)) {
518 ec->recovery_req = true;
519 printf(" - EC requests recovery\n");
520 }
521}
522
Simon Glassbe995a82014-10-13 23:42:15 -0600523int cros_ec_probe(struct udevice *dev)
524{
525 struct ec_state *ec = dev->priv;
526 struct cros_ec_dev *cdev = dev->uclass_priv;
Simon Glass920c6962016-06-19 17:33:15 -0600527 struct udevice *keyb_dev;
Simon Glass2ec9d172017-05-18 20:09:23 -0600528 ofnode node;
Simon Glassbe995a82014-10-13 23:42:15 -0600529 int err;
530
531 memcpy(ec, &s_state, sizeof(*ec));
Simon Glass2ec9d172017-05-18 20:09:23 -0600532 err = cros_ec_decode_ec_flash(dev, &ec->ec_config);
533 if (err) {
534 debug("%s: Cannot device EC flash\n", __func__);
Simon Glassbe995a82014-10-13 23:42:15 -0600535 return err;
Simon Glass2ec9d172017-05-18 20:09:23 -0600536 }
Simon Glassbe995a82014-10-13 23:42:15 -0600537
Simon Glass2ec9d172017-05-18 20:09:23 -0600538 node = ofnode_null();
Simon Glass920c6962016-06-19 17:33:15 -0600539 for (device_find_first_child(dev, &keyb_dev);
540 keyb_dev;
541 device_find_next_child(&keyb_dev)) {
542 if (device_get_uclass_id(keyb_dev) == UCLASS_KEYBOARD) {
Simon Glass2ec9d172017-05-18 20:09:23 -0600543 node = dev_ofnode(keyb_dev);
Simon Glass920c6962016-06-19 17:33:15 -0600544 break;
545 }
546 }
Simon Glass2ec9d172017-05-18 20:09:23 -0600547 if (!ofnode_valid(node)) {
Simon Glassbe995a82014-10-13 23:42:15 -0600548 debug("%s: No cros_ec keyboard found\n", __func__);
Simon Glass2ec9d172017-05-18 20:09:23 -0600549 } else if (keyscan_read_fdt_matrix(ec, node)) {
Simon Glassbe995a82014-10-13 23:42:15 -0600550 debug("%s: Could not read key matrix\n", __func__);
551 return -1;
552 }
553
554 /* If we loaded EC data, check that the length matches */
555 if (ec->flash_data &&
556 ec->flash_data_len != ec->ec_config.flash.length) {
557 printf("EC data length is %x, expected %x, discarding data\n",
558 ec->flash_data_len, ec->ec_config.flash.length);
Simon Glass21d651f2020-02-03 07:36:18 -0700559 free(ec->flash_data);
Simon Glassbe995a82014-10-13 23:42:15 -0600560 ec->flash_data = NULL;
561 }
562
563 /* Otherwise allocate the memory */
564 if (!ec->flash_data) {
565 ec->flash_data_len = ec->ec_config.flash.length;
Simon Glass21d651f2020-02-03 07:36:18 -0700566 ec->flash_data = malloc(ec->flash_data_len);
Simon Glassbe995a82014-10-13 23:42:15 -0600567 if (!ec->flash_data)
568 return -ENOMEM;
569 }
570
571 cdev->dev = dev;
572 g_state = ec;
573 return cros_ec_register(dev);
574}
575
Simon Glassbe995a82014-10-13 23:42:15 -0600576struct dm_cros_ec_ops cros_ec_ops = {
577 .packet = cros_ec_sandbox_packet,
578};
579
580static const struct udevice_id cros_ec_ids[] = {
Simon Glass3fbb7872015-03-26 09:29:39 -0600581 { .compatible = "google,cros-ec-sandbox" },
Simon Glassbe995a82014-10-13 23:42:15 -0600582 { }
583};
584
Walter Lozanoe3e24702020-06-25 01:10:04 -0300585U_BOOT_DRIVER(google_cros_ec_sandbox) = {
586 .name = "google_cros_ec_sandbox",
Simon Glassbe995a82014-10-13 23:42:15 -0600587 .id = UCLASS_CROS_EC,
588 .of_match = cros_ec_ids,
589 .probe = cros_ec_probe,
590 .priv_auto_alloc_size = sizeof(struct ec_state),
591 .ops = &cros_ec_ops,
592};