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bfeba017 MF |
1 | /* |
2 | * Chromium OS cros_ec driver | |
3 | * | |
4 | * Copyright (c) 2016 The Chromium OS Authors. | |
5 | * Copyright (c) 2016 National Instruments Corp | |
6 | * | |
7 | * SPDX-License-Identifier: GPL-2.0+ | |
8 | */ | |
9 | ||
10 | #include <common.h> | |
11 | #include <command.h> | |
12 | #include <cros_ec.h> | |
13 | #include <dm.h> | |
14 | #include <dm/device-internal.h> | |
15 | #include <dm/uclass-internal.h> | |
16 | ||
17 | /* Note: depends on enum ec_current_image */ | |
18 | static const char * const ec_current_image_name[] = {"unknown", "RO", "RW"}; | |
19 | ||
20 | DECLARE_GLOBAL_DATA_PTR; | |
21 | ||
a2558e87 MF |
22 | /** |
23 | * Decode a flash region parameter | |
24 | * | |
25 | * @param argc Number of params remaining | |
26 | * @param argv List of remaining parameters | |
27 | * @return flash region (EC_FLASH_REGION_...) or -1 on error | |
28 | */ | |
29 | static int cros_ec_decode_region(int argc, char * const argv[]) | |
30 | { | |
31 | if (argc > 0) { | |
32 | if (0 == strcmp(*argv, "rw")) | |
33 | return EC_FLASH_REGION_RW; | |
34 | else if (0 == strcmp(*argv, "ro")) | |
35 | return EC_FLASH_REGION_RO; | |
36 | ||
37 | debug("%s: Invalid region '%s'\n", __func__, *argv); | |
38 | } else { | |
39 | debug("%s: Missing region parameter\n", __func__); | |
40 | } | |
41 | ||
42 | return -1; | |
43 | } | |
44 | ||
bfeba017 MF |
45 | /** |
46 | * Perform a flash read or write command | |
47 | * | |
48 | * @param dev CROS-EC device to read/write | |
49 | * @param is_write 1 do to a write, 0 to do a read | |
50 | * @param argc Number of arguments | |
51 | * @param argv Arguments (2 is region, 3 is address) | |
52 | * @return 0 for ok, 1 for a usage error or -ve for ec command error | |
53 | * (negative EC_RES_...) | |
54 | */ | |
55 | static int do_read_write(struct cros_ec_dev *dev, int is_write, int argc, | |
56 | char * const argv[]) | |
57 | { | |
58 | uint32_t offset, size = -1U, region_size; | |
59 | unsigned long addr; | |
60 | char *endp; | |
61 | int region; | |
62 | int ret; | |
63 | ||
64 | region = cros_ec_decode_region(argc - 2, argv + 2); | |
65 | if (region == -1) | |
66 | return 1; | |
67 | if (argc < 4) | |
68 | return 1; | |
69 | addr = simple_strtoul(argv[3], &endp, 16); | |
70 | if (*argv[3] == 0 || *endp != 0) | |
71 | return 1; | |
72 | if (argc > 4) { | |
73 | size = simple_strtoul(argv[4], &endp, 16); | |
74 | if (*argv[4] == 0 || *endp != 0) | |
75 | return 1; | |
76 | } | |
77 | ||
78 | ret = cros_ec_flash_offset(dev, region, &offset, ®ion_size); | |
79 | if (ret) { | |
80 | debug("%s: Could not read region info\n", __func__); | |
81 | return ret; | |
82 | } | |
83 | if (size == -1U) | |
84 | size = region_size; | |
85 | ||
86 | ret = is_write ? | |
87 | cros_ec_flash_write(dev, (uint8_t *)addr, offset, size) : | |
88 | cros_ec_flash_read(dev, (uint8_t *)addr, offset, size); | |
89 | if (ret) { | |
90 | debug("%s: Could not %s region\n", __func__, | |
91 | is_write ? "write" : "read"); | |
92 | return ret; | |
93 | } | |
94 | ||
95 | return 0; | |
96 | } | |
97 | ||
98 | static int do_cros_ec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
99 | { | |
100 | struct cros_ec_dev *dev; | |
101 | struct udevice *udev; | |
102 | const char *cmd; | |
103 | int ret = 0; | |
104 | ||
105 | if (argc < 2) | |
106 | return CMD_RET_USAGE; | |
107 | ||
108 | cmd = argv[1]; | |
109 | if (0 == strcmp("init", cmd)) { | |
110 | /* Remove any existing device */ | |
111 | ret = uclass_find_device(UCLASS_CROS_EC, 0, &udev); | |
112 | if (!ret) | |
113 | device_remove(udev); | |
114 | ret = uclass_get_device(UCLASS_CROS_EC, 0, &udev); | |
115 | if (ret) { | |
116 | printf("Could not init cros_ec device (err %d)\n", ret); | |
117 | return 1; | |
118 | } | |
119 | return 0; | |
120 | } | |
121 | ||
122 | ret = uclass_get_device(UCLASS_CROS_EC, 0, &udev); | |
123 | if (ret) { | |
124 | printf("Cannot get cros-ec device (err=%d)\n", ret); | |
125 | return 1; | |
126 | } | |
127 | dev = dev_get_uclass_priv(udev); | |
128 | if (0 == strcmp("id", cmd)) { | |
129 | char id[MSG_BYTES]; | |
130 | ||
131 | if (cros_ec_read_id(dev, id, sizeof(id))) { | |
132 | debug("%s: Could not read KBC ID\n", __func__); | |
133 | return 1; | |
134 | } | |
135 | printf("%s\n", id); | |
136 | } else if (0 == strcmp("info", cmd)) { | |
137 | struct ec_response_mkbp_info info; | |
138 | ||
139 | if (cros_ec_info(dev, &info)) { | |
140 | debug("%s: Could not read KBC info\n", __func__); | |
141 | return 1; | |
142 | } | |
143 | printf("rows = %u\n", info.rows); | |
144 | printf("cols = %u\n", info.cols); | |
145 | printf("switches = %#x\n", info.switches); | |
146 | } else if (0 == strcmp("curimage", cmd)) { | |
147 | enum ec_current_image image; | |
148 | ||
149 | if (cros_ec_read_current_image(dev, &image)) { | |
150 | debug("%s: Could not read KBC image\n", __func__); | |
151 | return 1; | |
152 | } | |
153 | printf("%d\n", image); | |
154 | } else if (0 == strcmp("hash", cmd)) { | |
155 | struct ec_response_vboot_hash hash; | |
156 | int i; | |
157 | ||
158 | if (cros_ec_read_hash(dev, &hash)) { | |
159 | debug("%s: Could not read KBC hash\n", __func__); | |
160 | return 1; | |
161 | } | |
162 | ||
163 | if (hash.hash_type == EC_VBOOT_HASH_TYPE_SHA256) | |
164 | printf("type: SHA-256\n"); | |
165 | else | |
166 | printf("type: %d\n", hash.hash_type); | |
167 | ||
168 | printf("offset: 0x%08x\n", hash.offset); | |
169 | printf("size: 0x%08x\n", hash.size); | |
170 | ||
171 | printf("digest: "); | |
172 | for (i = 0; i < hash.digest_size; i++) | |
173 | printf("%02x", hash.hash_digest[i]); | |
174 | printf("\n"); | |
175 | } else if (0 == strcmp("reboot", cmd)) { | |
176 | int region; | |
177 | enum ec_reboot_cmd cmd; | |
178 | ||
179 | if (argc >= 3 && !strcmp(argv[2], "cold")) { | |
180 | cmd = EC_REBOOT_COLD; | |
181 | } else { | |
182 | region = cros_ec_decode_region(argc - 2, argv + 2); | |
183 | if (region == EC_FLASH_REGION_RO) | |
184 | cmd = EC_REBOOT_JUMP_RO; | |
185 | else if (region == EC_FLASH_REGION_RW) | |
186 | cmd = EC_REBOOT_JUMP_RW; | |
187 | else | |
188 | return CMD_RET_USAGE; | |
189 | } | |
190 | ||
191 | if (cros_ec_reboot(dev, cmd, 0)) { | |
192 | debug("%s: Could not reboot KBC\n", __func__); | |
193 | return 1; | |
194 | } | |
195 | } else if (0 == strcmp("events", cmd)) { | |
196 | uint32_t events; | |
197 | ||
198 | if (cros_ec_get_host_events(dev, &events)) { | |
199 | debug("%s: Could not read host events\n", __func__); | |
200 | return 1; | |
201 | } | |
202 | printf("0x%08x\n", events); | |
203 | } else if (0 == strcmp("clrevents", cmd)) { | |
204 | uint32_t events = 0x7fffffff; | |
205 | ||
206 | if (argc >= 3) | |
207 | events = simple_strtol(argv[2], NULL, 0); | |
208 | ||
209 | if (cros_ec_clear_host_events(dev, events)) { | |
210 | debug("%s: Could not clear host events\n", __func__); | |
211 | return 1; | |
212 | } | |
213 | } else if (0 == strcmp("read", cmd)) { | |
214 | ret = do_read_write(dev, 0, argc, argv); | |
215 | if (ret > 0) | |
216 | return CMD_RET_USAGE; | |
217 | } else if (0 == strcmp("write", cmd)) { | |
218 | ret = do_read_write(dev, 1, argc, argv); | |
219 | if (ret > 0) | |
220 | return CMD_RET_USAGE; | |
221 | } else if (0 == strcmp("erase", cmd)) { | |
222 | int region = cros_ec_decode_region(argc - 2, argv + 2); | |
223 | uint32_t offset, size; | |
224 | ||
225 | if (region == -1) | |
226 | return CMD_RET_USAGE; | |
227 | if (cros_ec_flash_offset(dev, region, &offset, &size)) { | |
228 | debug("%s: Could not read region info\n", __func__); | |
229 | ret = -1; | |
230 | } else { | |
231 | ret = cros_ec_flash_erase(dev, offset, size); | |
232 | if (ret) { | |
233 | debug("%s: Could not erase region\n", | |
234 | __func__); | |
235 | } | |
236 | } | |
237 | } else if (0 == strcmp("regioninfo", cmd)) { | |
238 | int region = cros_ec_decode_region(argc - 2, argv + 2); | |
239 | uint32_t offset, size; | |
240 | ||
241 | if (region == -1) | |
242 | return CMD_RET_USAGE; | |
243 | ret = cros_ec_flash_offset(dev, region, &offset, &size); | |
244 | if (ret) { | |
245 | debug("%s: Could not read region info\n", __func__); | |
246 | } else { | |
247 | printf("Region: %s\n", region == EC_FLASH_REGION_RO ? | |
248 | "RO" : "RW"); | |
249 | printf("Offset: %x\n", offset); | |
250 | printf("Size: %x\n", size); | |
251 | } | |
252 | } else if (0 == strcmp("flashinfo", cmd)) { | |
253 | struct ec_response_flash_info p; | |
254 | ||
255 | ret = cros_ec_read_flashinfo(dev, &p); | |
256 | if (!ret) { | |
257 | printf("Flash size: %u\n", p.flash_size); | |
258 | printf("Write block size: %u\n", p.write_block_size); | |
259 | printf("Erase block size: %u\n", p.erase_block_size); | |
260 | } | |
261 | } else if (0 == strcmp("vbnvcontext", cmd)) { | |
262 | uint8_t block[EC_VBNV_BLOCK_SIZE]; | |
263 | char buf[3]; | |
264 | int i, len; | |
265 | unsigned long result; | |
266 | ||
267 | if (argc <= 2) { | |
268 | ret = cros_ec_read_vbnvcontext(dev, block); | |
269 | if (!ret) { | |
270 | printf("vbnv_block: "); | |
271 | for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++) | |
272 | printf("%02x", block[i]); | |
273 | putc('\n'); | |
274 | } | |
275 | } else { | |
276 | /* | |
277 | * TODO(clchiou): Move this to a utility function as | |
278 | * cmd_spi might want to call it. | |
279 | */ | |
280 | memset(block, 0, EC_VBNV_BLOCK_SIZE); | |
281 | len = strlen(argv[2]); | |
282 | buf[2] = '\0'; | |
283 | for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++) { | |
284 | if (i * 2 >= len) | |
285 | break; | |
286 | buf[0] = argv[2][i * 2]; | |
287 | if (i * 2 + 1 >= len) | |
288 | buf[1] = '0'; | |
289 | else | |
290 | buf[1] = argv[2][i * 2 + 1]; | |
291 | strict_strtoul(buf, 16, &result); | |
292 | block[i] = result; | |
293 | } | |
294 | ret = cros_ec_write_vbnvcontext(dev, block); | |
295 | } | |
296 | if (ret) { | |
297 | debug("%s: Could not %s VbNvContext\n", __func__, | |
298 | argc <= 2 ? "read" : "write"); | |
299 | } | |
300 | } else if (0 == strcmp("test", cmd)) { | |
301 | int result = cros_ec_test(dev); | |
302 | ||
303 | if (result) | |
304 | printf("Test failed with error %d\n", result); | |
305 | else | |
306 | puts("Test passed\n"); | |
307 | } else if (0 == strcmp("version", cmd)) { | |
308 | struct ec_response_get_version *p; | |
309 | char *build_string; | |
310 | ||
311 | ret = cros_ec_read_version(dev, &p); | |
312 | if (!ret) { | |
313 | /* Print versions */ | |
314 | printf("RO version: %1.*s\n", | |
315 | (int)sizeof(p->version_string_ro), | |
316 | p->version_string_ro); | |
317 | printf("RW version: %1.*s\n", | |
318 | (int)sizeof(p->version_string_rw), | |
319 | p->version_string_rw); | |
320 | printf("Firmware copy: %s\n", | |
321 | (p->current_image < | |
322 | ARRAY_SIZE(ec_current_image_name) ? | |
323 | ec_current_image_name[p->current_image] : | |
324 | "?")); | |
325 | ret = cros_ec_read_build_info(dev, &build_string); | |
326 | if (!ret) | |
327 | printf("Build info: %s\n", build_string); | |
328 | } | |
329 | } else if (0 == strcmp("ldo", cmd)) { | |
330 | uint8_t index, state; | |
331 | char *endp; | |
332 | ||
333 | if (argc < 3) | |
334 | return CMD_RET_USAGE; | |
335 | index = simple_strtoul(argv[2], &endp, 10); | |
336 | if (*argv[2] == 0 || *endp != 0) | |
337 | return CMD_RET_USAGE; | |
338 | if (argc > 3) { | |
339 | state = simple_strtoul(argv[3], &endp, 10); | |
340 | if (*argv[3] == 0 || *endp != 0) | |
341 | return CMD_RET_USAGE; | |
342 | ret = cros_ec_set_ldo(udev, index, state); | |
343 | } else { | |
344 | ret = cros_ec_get_ldo(udev, index, &state); | |
345 | if (!ret) { | |
346 | printf("LDO%d: %s\n", index, | |
347 | state == EC_LDO_STATE_ON ? | |
348 | "on" : "off"); | |
349 | } | |
350 | } | |
351 | ||
352 | if (ret) { | |
353 | debug("%s: Could not access LDO%d\n", __func__, index); | |
354 | return ret; | |
355 | } | |
356 | } else { | |
357 | return CMD_RET_USAGE; | |
358 | } | |
359 | ||
360 | if (ret < 0) { | |
361 | printf("Error: CROS-EC command failed (error %d)\n", ret); | |
362 | ret = 1; | |
363 | } | |
364 | ||
365 | return ret; | |
366 | } | |
367 | ||
368 | U_BOOT_CMD( | |
369 | crosec, 6, 1, do_cros_ec, | |
370 | "CROS-EC utility command", | |
371 | "init Re-init CROS-EC (done on startup automatically)\n" | |
372 | "crosec id Read CROS-EC ID\n" | |
373 | "crosec info Read CROS-EC info\n" | |
374 | "crosec curimage Read CROS-EC current image\n" | |
375 | "crosec hash Read CROS-EC hash\n" | |
376 | "crosec reboot [rw | ro | cold] Reboot CROS-EC\n" | |
377 | "crosec events Read CROS-EC host events\n" | |
378 | "crosec clrevents [mask] Clear CROS-EC host events\n" | |
379 | "crosec regioninfo <ro|rw> Read image info\n" | |
380 | "crosec flashinfo Read flash info\n" | |
381 | "crosec erase <ro|rw> Erase EC image\n" | |
382 | "crosec read <ro|rw> <addr> [<size>] Read EC image\n" | |
383 | "crosec write <ro|rw> <addr> [<size>] Write EC image\n" | |
384 | "crosec vbnvcontext [hexstring] Read [write] VbNvContext from EC\n" | |
385 | "crosec ldo <idx> [<state>] Switch/Read LDO state\n" | |
386 | "crosec test run tests on cros_ec\n" | |
387 | "crosec version Read CROS-EC version" | |
388 | ); |