[J-u-boot.git] / cmd / cros_ec.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Chromium OS cros_ec driver
 *
 * Copyright (c) 2016 The Chromium OS Authors.
 * Copyright (c) 2016 National Instruments Corp
 */

#include <common.h>
#include <command.h>
#include <cros_ec.h>
#include <dm.h>
#include <flash.h>
#include <log.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>

/* Note: depends on enum ec_current_image */
static const char * const ec_current_image_name[] = {"unknown", "RO", "RW"};

/**
 * Decode a flash region parameter
 *
 * @param argc Number of params remaining
 * @param argv List of remaining parameters
 * @return flash region (EC_FLASH_REGION_...) or -1 on error
 */
static int cros_ec_decode_region(int argc, char *const argv[])
{
	if (argc > 0) {
		if (0 == strcmp(*argv, "rw"))
			return EC_FLASH_REGION_ACTIVE;
		else if (0 == strcmp(*argv, "ro"))
			return EC_FLASH_REGION_RO;

		debug("%s: Invalid region '%s'\n", __func__, *argv);
	} else {
		debug("%s: Missing region parameter\n", __func__);
	}

	return -1;
}

/**
 * Perform a flash read or write command
 *
 * @param dev		CROS-EC device to read/write
 * @param is_write	1 do to a write, 0 to do a read
 * @param argc		Number of arguments
 * @param argv		Arguments (2 is region, 3 is address)
 * @return 0 for ok, 1 for a usage error or -ve for ec command error
 *	(negative EC_RES_...)
 */
static int do_read_write(struct udevice *dev, int is_write, int argc,
			 char *const argv[])
{
	uint32_t offset, size = -1U, region_size;
	unsigned long addr;
	char *endp;
	int region;
	int ret;

	region = cros_ec_decode_region(argc - 2, argv + 2);
	if (region == -1)
		return 1;
	if (argc < 4)
		return 1;
	addr = simple_strtoul(argv[3], &endp, 16);
	if (*argv[3] == 0 || *endp != 0)
		return 1;
	if (argc > 4) {
		size = simple_strtoul(argv[4], &endp, 16);
		if (*argv[4] == 0 || *endp != 0)
			return 1;
	}

	ret = cros_ec_flash_offset(dev, region, &offset, &region_size);
	if (ret) {
		debug("%s: Could not read region info\n", __func__);
		return ret;
	}
	if (size == -1U)
		size = region_size;

	ret = is_write ?
		cros_ec_flash_write(dev, (uint8_t *)addr, offset, size) :
		cros_ec_flash_read(dev, (uint8_t *)addr, offset, size);
	if (ret) {
		debug("%s: Could not %s region\n", __func__,
		      is_write ? "write" : "read");
		return ret;
	}

	return 0;
}

static int do_cros_ec(struct cmd_tbl *cmdtp, int flag, int argc,
		      char *const argv[])
{
	struct udevice *dev;
	const char *cmd;
	int ret = 0;

	if (argc < 2)
		return CMD_RET_USAGE;

	cmd = argv[1];
	if (0 == strcmp("init", cmd)) {
		/* Remove any existing device */
		ret = uclass_find_device(UCLASS_CROS_EC, 0, &dev);
		if (!ret)
			device_remove(dev, DM_REMOVE_NORMAL);
		ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
		if (ret) {
			printf("Could not init cros_ec device (err %d)\n", ret);
			return 1;
		}
		return 0;
	}

	ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
	if (ret) {
		printf("Cannot get cros-ec device (err=%d)\n", ret);
		return 1;
	}
	if (0 == strcmp("id", cmd)) {
		char id[MSG_BYTES];

		if (cros_ec_read_id(dev, id, sizeof(id))) {
			debug("%s: Could not read KBC ID\n", __func__);
			return 1;
		}
		printf("%s\n", id);
	} else if (0 == strcmp("info", cmd)) {
		struct ec_response_mkbp_info info;

		if (cros_ec_info(dev, &info)) {
			debug("%s: Could not read KBC info\n", __func__);
			return 1;
		}
		printf("rows     = %u\n", info.rows);
		printf("cols     = %u\n", info.cols);
	} else if (0 == strcmp("curimage", cmd)) {
		enum ec_current_image image;

		if (cros_ec_read_current_image(dev, &image)) {
			debug("%s: Could not read KBC image\n", __func__);
			return 1;
		}
		printf("%d\n", image);
	} else if (0 == strcmp("hash", cmd)) {
		struct ec_response_vboot_hash hash;
		int i;

		if (cros_ec_read_hash(dev, EC_VBOOT_HASH_OFFSET_ACTIVE, &hash)) {
			debug("%s: Could not read KBC hash\n", __func__);
			return 1;
		}

		if (hash.hash_type == EC_VBOOT_HASH_TYPE_SHA256)
			printf("type:    SHA-256\n");
		else
			printf("type:    %d\n", hash.hash_type);

		printf("offset:  0x%08x\n", hash.offset);
		printf("size:    0x%08x\n", hash.size);

		printf("digest:  ");
		for (i = 0; i < hash.digest_size; i++)
			printf("%02x", hash.hash_digest[i]);
		printf("\n");
	} else if (0 == strcmp("reboot", cmd)) {
		int region;
		enum ec_reboot_cmd cmd;

		if (argc >= 3 && !strcmp(argv[2], "cold")) {
			cmd = EC_REBOOT_COLD;
		} else {
			region = cros_ec_decode_region(argc - 2, argv + 2);
			if (region == EC_FLASH_REGION_RO)
				cmd = EC_REBOOT_JUMP_RO;
			else if (region == EC_FLASH_REGION_ACTIVE)
				cmd = EC_REBOOT_JUMP_RW;
			else
				return CMD_RET_USAGE;
		}

		if (cros_ec_reboot(dev, cmd, 0)) {
			debug("%s: Could not reboot KBC\n", __func__);
			return 1;
		}
	} else if (0 == strcmp("events", cmd)) {
		uint32_t events;

		if (cros_ec_get_host_events(dev, &events)) {
			debug("%s: Could not read host events\n", __func__);
			return 1;
		}
		printf("0x%08x\n", events);
	} else if (0 == strcmp("clrevents", cmd)) {
		uint32_t events = 0x7fffffff;

		if (argc >= 3)
			events = simple_strtol(argv[2], NULL, 0);

		if (cros_ec_clear_host_events(dev, events)) {
			debug("%s: Could not clear host events\n", __func__);
			return 1;
		}
	} else if (0 == strcmp("read", cmd)) {
		ret = do_read_write(dev, 0, argc, argv);
		if (ret > 0)
			return CMD_RET_USAGE;
	} else if (0 == strcmp("write", cmd)) {
		ret = do_read_write(dev, 1, argc, argv);
		if (ret > 0)
			return CMD_RET_USAGE;
	} else if (0 == strcmp("erase", cmd)) {
		int region = cros_ec_decode_region(argc - 2, argv + 2);
		uint32_t offset, size;

		if (region == -1)
			return CMD_RET_USAGE;
		if (cros_ec_flash_offset(dev, region, &offset, &size)) {
			debug("%s: Could not read region info\n", __func__);
			ret = -1;
		} else {
			ret = cros_ec_flash_erase(dev, offset, size);
			if (ret) {
				debug("%s: Could not erase region\n",
				      __func__);
			}
		}
	} else if (0 == strcmp("regioninfo", cmd)) {
		int region = cros_ec_decode_region(argc - 2, argv + 2);
		uint32_t offset, size;

		if (region == -1)
			return CMD_RET_USAGE;
		ret = cros_ec_flash_offset(dev, region, &offset, &size);
		if (ret) {
			debug("%s: Could not read region info\n", __func__);
		} else {
			printf("Region: %s\n", region == EC_FLASH_REGION_RO ?
					"RO" : "RW");
			printf("Offset: %x\n", offset);
			printf("Size:   %x\n", size);
		}
	} else if (0 == strcmp("flashinfo", cmd)) {
		struct ec_response_flash_info p;

		ret = cros_ec_read_flashinfo(dev, &p);
		if (!ret) {
			printf("Flash size:         %u\n", p.flash_size);
			printf("Write block size:   %u\n", p.write_block_size);
			printf("Erase block size:   %u\n", p.erase_block_size);
		}
	} else if (0 == strcmp("vbnvcontext", cmd)) {
		uint8_t block[EC_VBNV_BLOCK_SIZE];
		char buf[3];
		int i, len;
		unsigned long result;

		if (argc <= 2) {
			ret = cros_ec_read_nvdata(dev, block,
						  EC_VBNV_BLOCK_SIZE);
			if (!ret) {
				printf("vbnv_block: ");
				for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++)
					printf("%02x", block[i]);
				putc('\n');
			}
		} else {
			/*
			 * TODO(clchiou): Move this to a utility function as
			 * cmd_spi might want to call it.
			 */
			memset(block, 0, EC_VBNV_BLOCK_SIZE);
			len = strlen(argv[2]);
			buf[2] = '\0';
			for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++) {
				if (i * 2 >= len)
					break;
				buf[0] = argv[2][i * 2];
				if (i * 2 + 1 >= len)
					buf[1] = '0';
				else
					buf[1] = argv[2][i * 2 + 1];
				strict_strtoul(buf, 16, &result);
				block[i] = result;
			}
			ret = cros_ec_write_nvdata(dev, block,
						   EC_VBNV_BLOCK_SIZE);
		}
		if (ret) {
			debug("%s: Could not %s VbNvContext\n", __func__,
			      argc <= 2 ?  "read" : "write");
		}
	} else if (0 == strcmp("test", cmd)) {
		int result = cros_ec_test(dev);

		if (result)
			printf("Test failed with error %d\n", result);
		else
			puts("Test passed\n");
	} else if (0 == strcmp("version", cmd)) {
		struct ec_response_get_version *p;
		char *build_string;

		ret = cros_ec_read_version(dev, &p);
		if (!ret) {
			/* Print versions */
			printf("RO version:    %1.*s\n",
			       (int)sizeof(p->version_string_ro),
			       p->version_string_ro);
			printf("RW version:    %1.*s\n",
			       (int)sizeof(p->version_string_rw),
			       p->version_string_rw);
			printf("Firmware copy: %s\n",
			       (p->current_image <
			       ARRAY_SIZE(ec_current_image_name) ?
			       ec_current_image_name[p->current_image] :
			       "?"));
			ret = cros_ec_read_build_info(dev, &build_string);
			if (!ret)
				printf("Build info:    %s\n", build_string);
		}
	} else if (0 == strcmp("ldo", cmd)) {
		uint8_t index, state;
		char *endp;

		if (argc < 3)
			return CMD_RET_USAGE;
		index = simple_strtoul(argv[2], &endp, 10);
		if (*argv[2] == 0 || *endp != 0)
			return CMD_RET_USAGE;
		if (argc > 3) {
			state = simple_strtoul(argv[3], &endp, 10);
			if (*argv[3] == 0 || *endp != 0)
				return CMD_RET_USAGE;
			ret = cros_ec_set_ldo(dev, index, state);
		} else {
			ret = cros_ec_get_ldo(dev, index, &state);
			if (!ret) {
				printf("LDO%d: %s\n", index,
				       state == EC_LDO_STATE_ON ?
				       "on" : "off");
			}
		}

		if (ret) {
			debug("%s: Could not access LDO%d\n", __func__, index);
			return ret;
		}
	} else {
		return CMD_RET_USAGE;
	}

	if (ret < 0) {
		printf("Error: CROS-EC command failed (error %d)\n", ret);
		ret = 1;
	}

	return ret;
}

U_BOOT_CMD(
	crosec,	6,	1,	do_cros_ec,
	"CROS-EC utility command",
	"init                Re-init CROS-EC (done on startup automatically)\n"
	"crosec id                  Read CROS-EC ID\n"
	"crosec info                Read CROS-EC info\n"
	"crosec curimage            Read CROS-EC current image\n"
	"crosec hash                Read CROS-EC hash\n"
	"crosec reboot [rw | ro | cold]  Reboot CROS-EC\n"
	"crosec events              Read CROS-EC host events\n"
	"crosec clrevents [mask]    Clear CROS-EC host events\n"
	"crosec regioninfo <ro|rw>  Read image info\n"
	"crosec flashinfo           Read flash info\n"
	"crosec erase <ro|rw>       Erase EC image\n"
	"crosec read <ro|rw> <addr> [<size>]   Read EC image\n"
	"crosec write <ro|rw> <addr> [<size>]  Write EC image\n"
	"crosec vbnvcontext [hexstring]        Read [write] VbNvContext from EC\n"
	"crosec ldo <idx> [<state>] Switch/Read LDO state\n"
	"crosec test                run tests on cros_ec\n"
	"crosec version             Read CROS-EC version"
);
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
bfeba017 MF	2	/*
	3	* Chromium OS cros_ec driver
	4	*
	5	* Copyright (c) 2016 The Chromium OS Authors.
	6	* Copyright (c) 2016 National Instruments Corp
bfeba017 MF	7	*/
	8
	9	#include <common.h>
	10	#include <command.h>
	11	#include <cros_ec.h>
	12	#include <dm.h>
b79fdc76	13	#include <flash.h>
f7ae49fc	14	#include <log.h>
bfeba017 MF	15	#include <dm/device-internal.h>
	16	#include <dm/uclass-internal.h>
	17
	18	/* Note: depends on enum ec_current_image */
	19	static const char * const ec_current_image_name[] = {"unknown", "RO", "RW"};
	20
a2558e87 MF	21	/**
	22	* Decode a flash region parameter
	23	*
	24	* @param argc Number of params remaining
	25	* @param argv List of remaining parameters
	26	* @return flash region (EC_FLASH_REGION_...) or -1 on error
	27	*/
09140113	28	static int cros_ec_decode_region(int argc, char *const argv[])
a2558e87 MF	29	{
	30	if (argc > 0) {
	31	if (0 == strcmp(*argv, "rw"))
6f1c0430	32	return EC_FLASH_REGION_ACTIVE;
a2558e87 MF	33	else if (0 == strcmp(*argv, "ro"))
	34	return EC_FLASH_REGION_RO;
	35
	36	debug("%s: Invalid region '%s'\n", __func__, *argv);
	37	} else {
	38	debug("%s: Missing region parameter\n", __func__);
	39	}
	40
	41	return -1;
	42	}
	43
bfeba017 MF	44	/**
	45	* Perform a flash read or write command
	46	*
	47	* @param dev CROS-EC device to read/write
	48	* @param is_write 1 do to a write, 0 to do a read
	49	* @param argc Number of arguments
	50	* @param argv Arguments (2 is region, 3 is address)
	51	* @return 0 for ok, 1 for a usage error or -ve for ec command error
	52	* (negative EC_RES_...)
	53	*/
6322a7b6	54	static int do_read_write(struct udevice *dev, int is_write, int argc,
09140113	55	char *const argv[])
bfeba017 MF	56	{
	57	uint32_t offset, size = -1U, region_size;
	58	unsigned long addr;
	59	char *endp;
	60	int region;
	61	int ret;
	62
	63	region = cros_ec_decode_region(argc - 2, argv + 2);
	64	if (region == -1)
	65	return 1;
	66	if (argc < 4)
	67	return 1;
	68	addr = simple_strtoul(argv[3], &endp, 16);
	69	if (argv[3] == 0 \|\| endp != 0)
	70	return 1;
	71	if (argc > 4) {
	72	size = simple_strtoul(argv[4], &endp, 16);
	73	if (argv[4] == 0 \|\| endp != 0)
	74	return 1;
	75	}
	76
	77	ret = cros_ec_flash_offset(dev, region, &offset, &region_size);
	78	if (ret) {
	79	debug("%s: Could not read region info\n", __func__);
	80	return ret;
	81	}
	82	if (size == -1U)
	83	size = region_size;
	84
	85	ret = is_write ?
	86	cros_ec_flash_write(dev, (uint8_t *)addr, offset, size) :
	87	cros_ec_flash_read(dev, (uint8_t *)addr, offset, size);
	88	if (ret) {
	89	debug("%s: Could not %s region\n", __func__,
	90	is_write ? "write" : "read");
	91	return ret;
	92	}
	93
	94	return 0;
	95	}
	96
09140113 SG	97	static int do_cros_ec(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	98	char *const argv[])
bfeba017	99	{
6322a7b6	100	struct udevice *dev;
bfeba017 MF	101	const char *cmd;
	102	int ret = 0;
	103
	104	if (argc < 2)
	105	return CMD_RET_USAGE;
	106
	107	cmd = argv[1];
	108	if (0 == strcmp("init", cmd)) {
	109	/* Remove any existing device */
6322a7b6	110	ret = uclass_find_device(UCLASS_CROS_EC, 0, &dev);
bfeba017	111	if (!ret)
6322a7b6 SG	112	device_remove(dev, DM_REMOVE_NORMAL);
6322a7b6 SG	113	ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
bfeba017 MF	114	if (ret) {
	115	printf("Could not init cros_ec device (err %d)\n", ret);
	116	return 1;
	117	}
	118	return 0;
	119	}
	120
6322a7b6	121	ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
bfeba017 MF	122	if (ret) {
	123	printf("Cannot get cros-ec device (err=%d)\n", ret);
	124	return 1;
	125	}
bfeba017 MF	126	if (0 == strcmp("id", cmd)) {
	127	char id[MSG_BYTES];
	128
	129	if (cros_ec_read_id(dev, id, sizeof(id))) {
	130	debug("%s: Could not read KBC ID\n", __func__);
	131	return 1;
	132	}
	133	printf("%s\n", id);
	134	} else if (0 == strcmp("info", cmd)) {
	135	struct ec_response_mkbp_info info;
	136
	137	if (cros_ec_info(dev, &info)) {
	138	debug("%s: Could not read KBC info\n", __func__);
	139	return 1;
	140	}
	141	printf("rows = %u\n", info.rows);
	142	printf("cols = %u\n", info.cols);
bfeba017 MF	143	} else if (0 == strcmp("curimage", cmd)) {
	144	enum ec_current_image image;
	145
	146	if (cros_ec_read_current_image(dev, &image)) {
	147	debug("%s: Could not read KBC image\n", __func__);
	148	return 1;
	149	}
	150	printf("%d\n", image);
	151	} else if (0 == strcmp("hash", cmd)) {
	152	struct ec_response_vboot_hash hash;
	153	int i;
	154
a12ef7e2	155	if (cros_ec_read_hash(dev, EC_VBOOT_HASH_OFFSET_ACTIVE, &hash)) {
bfeba017 MF	156	debug("%s: Could not read KBC hash\n", __func__);
	157	return 1;
	158	}
	159
	160	if (hash.hash_type == EC_VBOOT_HASH_TYPE_SHA256)
	161	printf("type: SHA-256\n");
	162	else
	163	printf("type: %d\n", hash.hash_type);
	164
	165	printf("offset: 0x%08x\n", hash.offset);
	166	printf("size: 0x%08x\n", hash.size);
	167
	168	printf("digest: ");
	169	for (i = 0; i < hash.digest_size; i++)
	170	printf("%02x", hash.hash_digest[i]);
	171	printf("\n");
	172	} else if (0 == strcmp("reboot", cmd)) {
	173	int region;
	174	enum ec_reboot_cmd cmd;
	175
	176	if (argc >= 3 && !strcmp(argv[2], "cold")) {
	177	cmd = EC_REBOOT_COLD;
	178	} else {
	179	region = cros_ec_decode_region(argc - 2, argv + 2);
	180	if (region == EC_FLASH_REGION_RO)
	181	cmd = EC_REBOOT_JUMP_RO;
6f1c0430	182	else if (region == EC_FLASH_REGION_ACTIVE)
bfeba017 MF	183	cmd = EC_REBOOT_JUMP_RW;
	184	else
	185	return CMD_RET_USAGE;
	186	}
	187
	188	if (cros_ec_reboot(dev, cmd, 0)) {
	189	debug("%s: Could not reboot KBC\n", __func__);
	190	return 1;
	191	}
	192	} else if (0 == strcmp("events", cmd)) {
	193	uint32_t events;
	194
	195	if (cros_ec_get_host_events(dev, &events)) {
	196	debug("%s: Could not read host events\n", __func__);
	197	return 1;
	198	}
	199	printf("0x%08x\n", events);
	200	} else if (0 == strcmp("clrevents", cmd)) {
	201	uint32_t events = 0x7fffffff;
	202
	203	if (argc >= 3)
	204	events = simple_strtol(argv[2], NULL, 0);
	205
	206	if (cros_ec_clear_host_events(dev, events)) {
	207	debug("%s: Could not clear host events\n", __func__);
	208	return 1;
	209	}
	210	} else if (0 == strcmp("read", cmd)) {
	211	ret = do_read_write(dev, 0, argc, argv);
	212	if (ret > 0)
	213	return CMD_RET_USAGE;
	214	} else if (0 == strcmp("write", cmd)) {
	215	ret = do_read_write(dev, 1, argc, argv);
	216	if (ret > 0)
	217	return CMD_RET_USAGE;
	218	} else if (0 == strcmp("erase", cmd)) {
	219	int region = cros_ec_decode_region(argc - 2, argv + 2);
	220	uint32_t offset, size;
	221
	222	if (region == -1)
	223	return CMD_RET_USAGE;
	224	if (cros_ec_flash_offset(dev, region, &offset, &size)) {
	225	debug("%s: Could not read region info\n", __func__);
	226	ret = -1;
	227	} else {
	228	ret = cros_ec_flash_erase(dev, offset, size);
	229	if (ret) {
	230	debug("%s: Could not erase region\n",
	231	__func__);
	232	}
	233	}
	234	} else if (0 == strcmp("regioninfo", cmd)) {
	235	int region = cros_ec_decode_region(argc - 2, argv + 2);
	236	uint32_t offset, size;
	237
	238	if (region == -1)
	239	return CMD_RET_USAGE;
	240	ret = cros_ec_flash_offset(dev, region, &offset, &size);
	241	if (ret) {
	242	debug("%s: Could not read region info\n", __func__);
	243	} else {
	244	printf("Region: %s\n", region == EC_FLASH_REGION_RO ?
	245	"RO" : "RW");
	246	printf("Offset: %x\n", offset);
247	printf("Size: %x\n", size);
248	}
249	} else if (0 == strcmp("flashinfo", cmd)) {
250	struct ec_response_flash_info p;
251
252	ret = cros_ec_read_flashinfo(dev, &p);
253	if (!ret) {
254	printf("Flash size: %u\n", p.flash_size);
255	printf("Write block size: %u\n", p.write_block_size);
256	printf("Erase block size: %u\n", p.erase_block_size);
257	}
258	} else if (0 == strcmp("vbnvcontext", cmd)) {
259	uint8_t block[EC_VBNV_BLOCK_SIZE];
260	char buf[3];
261	int i, len;
262	unsigned long result;
263
264	if (argc <= 2) {
6322a7b6 SG	265	ret = cros_ec_read_nvdata(dev, block,
6322a7b6 SG	266	EC_VBNV_BLOCK_SIZE);
bfeba017 MF	267	if (!ret) {
	268	printf("vbnv_block: ");
	269	for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++)
	270	printf("%02x", block[i]);
	271	putc('\n');
	272	}
	273	} else {
	274	/*
	275	* TODO(clchiou): Move this to a utility function as
	276	* cmd_spi might want to call it.
	277	*/
	278	memset(block, 0, EC_VBNV_BLOCK_SIZE);
	279	len = strlen(argv[2]);
	280	buf[2] = '\0';
	281	for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++) {
	282	if (i * 2 >= len)
	283	break;
	284	buf[0] = argv[2][i * 2];
	285	if (i * 2 + 1 >= len)
	286	buf[1] = '0';
	287	else
	288	buf[1] = argv[2][i * 2 + 1];
	289	strict_strtoul(buf, 16, &result);
	290	block[i] = result;
	291	}
6322a7b6 SG	292	ret = cros_ec_write_nvdata(dev, block,
6322a7b6 SG	293	EC_VBNV_BLOCK_SIZE);
bfeba017 MF	294	}
	295	if (ret) {
	296	debug("%s: Could not %s VbNvContext\n", __func__,
	297	argc <= 2 ? "read" : "write");
	298	}
	299	} else if (0 == strcmp("test", cmd)) {
	300	int result = cros_ec_test(dev);
	301
	302	if (result)
	303	printf("Test failed with error %d\n", result);
	304	else
	305	puts("Test passed\n");
	306	} else if (0 == strcmp("version", cmd)) {
	307	struct ec_response_get_version *p;
	308	char *build_string;
	309
	310	ret = cros_ec_read_version(dev, &p);
	311	if (!ret) {
	312	/* Print versions */
	313	printf("RO version: %1.*s\n",
	314	(int)sizeof(p->version_string_ro),
	315	p->version_string_ro);
	316	printf("RW version: %1.*s\n",
	317	(int)sizeof(p->version_string_rw),
	318	p->version_string_rw);
	319	printf("Firmware copy: %s\n",
	320	(p->current_image <
	321	ARRAY_SIZE(ec_current_image_name) ?
	322	ec_current_image_name[p->current_image] :
	323	"?"));
	324	ret = cros_ec_read_build_info(dev, &build_string);
	325	if (!ret)
	326	printf("Build info: %s\n", build_string);
	327	}
	328	} else if (0 == strcmp("ldo", cmd)) {
	329	uint8_t index, state;
	330	char *endp;
	331
	332	if (argc < 3)
	333	return CMD_RET_USAGE;
	334	index = simple_strtoul(argv[2], &endp, 10);
	335	if (argv[2] == 0 \|\| endp != 0)
	336	return CMD_RET_USAGE;
	337	if (argc > 3) {
	338	state = simple_strtoul(argv[3], &endp, 10);
	339	if (argv[3] == 0 \|\| endp != 0)
	340	return CMD_RET_USAGE;
6322a7b6	341	ret = cros_ec_set_ldo(dev, index, state);
bfeba017	342	} else {
6322a7b6	343	ret = cros_ec_get_ldo(dev, index, &state);
bfeba017 MF	344	if (!ret) {
	345	printf("LDO%d: %s\n", index,
	346	state == EC_LDO_STATE_ON ?
	347	"on" : "off");
	348	}
	349	}
	350
	351	if (ret) {
	352	debug("%s: Could not access LDO%d\n", __func__, index);
	353	return ret;
	354	}
	355	} else {
	356	return CMD_RET_USAGE;
	357	}
	358
	359	if (ret < 0) {
	360	printf("Error: CROS-EC command failed (error %d)\n", ret);
	361	ret = 1;
	362	}
	363
	364	return ret;
	365	}
	366
	367	U_BOOT_CMD(
	368	crosec, 6, 1, do_cros_ec,
	369	"CROS-EC utility command",
	370	"init Re-init CROS-EC (done on startup automatically)\n"
	371	"crosec id Read CROS-EC ID\n"
	372	"crosec info Read CROS-EC info\n"
	373	"crosec curimage Read CROS-EC current image\n"
	374	"crosec hash Read CROS-EC hash\n"
	375	"crosec reboot [rw \| ro \| cold] Reboot CROS-EC\n"
	376	"crosec events Read CROS-EC host events\n"
	377	"crosec clrevents [mask] Clear CROS-EC host events\n"
	378	"crosec regioninfo <ro\|rw> Read image info\n"
	379	"crosec flashinfo Read flash info\n"
	380	"crosec erase <ro\|rw> Erase EC image\n"
	381	"crosec read <ro\|rw> <addr> [<size>] Read EC image\n"
	382	"crosec write <ro\|rw> <addr> [<size>] Write EC image\n"
	383	"crosec vbnvcontext [hexstring] Read [write] VbNvContext from EC\n"
	384	"crosec ldo <idx> [<state>] Switch/Read LDO state\n"
	385	"crosec test run tests on cros_ec\n"
	386	"crosec version Read CROS-EC version"
	387	);