[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 <command.h>
#include <cros_ec.h>
#include <dm.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 = hextoul(argv[3], &endp);
	if (*argv[3] == 0 || *endp != 0)
		return 1;
	if (argc > 4) {
		size = hextoul(argv[4], &endp);
		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 const char *const feat_name[64] = {
	"limited",
	"flash",
	"pwm_fan",
	"pwm_keyb",
	"lightbar",
	"led",
	"motion_sense",
	"keyb",
	"pstore",
	"port80",
	"thermal",
	"bklight_switch",
	"wifi_switch",
	"host_events",
	"gpio",
	"i2c",
	"charger",
	"battery",
	"smart_battery",
	"hang_detect",
	"pmu",
	"sub_mcu",
	"usb_pd",
	"usb_mux",
	"motion_sense_fifo",
	"vstore",
	"usbc_ss_mux_virtual",
	"rtc",
	"fingerprint",
	"touchpad",
	"rwsig",
	"device_event",
	"unified_wake_masks",
	"host_event64",
	"exec_in_ram",
	"cec",
	"motion_sense_tight_timestamps",
	"refined_tablet_mode_hysteresis",
	"efs2",
	"scp",
	"ish",
	"typec_cmd",
	"typec_require_ap_mode_entry",
	"typec_mux_require_ap_ack",
};

static int do_show_features(struct udevice *dev)
{
	u64 feat;
	int ret;
	uint i;

	ret = cros_ec_get_features(dev, &feat);
	if (ret)
		return ret;
	for (i = 0; i < ARRAY_SIZE(feat_name); i++) {
		if (feat & (1ULL << i)) {
			if (feat_name[i])
				printf("%s\n", feat_name[i]);
			else
				printf("unknown %d\n", i);
		}
	}

	return 0;
}

static const char *const switch_name[8] = {
	"lid open",
	"power button pressed",
	"write-protect disabled",
	NULL,
	"dedicated recovery",
	NULL,
	NULL,
	NULL,
};

static int do_show_switches(struct udevice *dev)
{
	uint switches;
	int ret;
	uint i;

	ret = cros_ec_get_switches(dev);
	if (ret < 0)
		return log_msg_ret("get", ret);
	switches = ret;
	for (i = 0; i < ARRAY_SIZE(switch_name); i++) {
		uint mask = 1 << i;

		if (switches & mask) {
			if (switch_name[i])
				printf("%s\n", switch_name[i]);
			else
				printf("unknown %02x\n", mask);
		}
	}

	return 0;
}

static const char *const event_name[] = {
	"lid_closed",
	"lid_open",
	"power_button",
	"ac_connected",
	"ac_disconnected",
	"battery_low",
	"battery_critical",
	"battery",
	"thermal_threshold",
	"device",
	"thermal",
	"usb_charger",
	"key_pressed",
	"interface_ready",
	"keyboard_recovery",
	"thermal_shutdown",
	"battery_shutdown",
	"throttle_start",
	"throttle_stop",
	"hang_detect",
	"hang_reboot",
	"pd_mcu",
	"battery_status",
	"panic",
	"keyboard_fastboot",
	"rtc",
	"mkbp",
	"usb_mux",
	"mode_change",
	"keyboard_recovery_hw_reinit",
	"extended",
	"invalid",
};

static int do_show_events(struct udevice *dev)
{
	u32 events;
	int ret;
	uint i;

	ret = cros_ec_get_host_events(dev, &events);
	if (ret)
		return ret;
	printf("%08x\n", events);
	for (i = 0; i < ARRAY_SIZE(event_name); i++) {
		enum host_event_code code = i + 1;
		u64 mask = EC_HOST_EVENT_MASK(code);

		if (events & mask) {
			if (event_name[i])
				printf("%s\n", event_name[i]);
			else
				printf("unknown code %#x\n", code);
		}
	}

	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 (!strcmp("features", cmd)) {
		ret = do_show_features(dev);

		if (ret)
			printf("Error: %d\n", ret);
	} else if (!strcmp("switches", cmd)) {
		ret = do_show_switches(dev);

		if (ret)
			printf("Error: %d\n", ret);
	} 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)) {
		ret = do_show_events(dev);

		if (ret)
			printf("Error: %d\n", ret);
	} 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 = dectoul(argv[2], &endp);
		if (*argv[2] == 0 || *endp != 0)
			return CMD_RET_USAGE;
		if (argc > 3) {
			state = dectoul(argv[3], &endp);
			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 if (!strcmp("sku", cmd)) {
		ret = cros_ec_get_sku_id(dev);

		if (ret >= 0) {
			printf("%d\n", ret);
			ret = 0;
		} else {
			printf("Error: %d\n", 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 features            Read CROS-EC features\n"
	"crosec switches            Read CROS-EC switches\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 eventsb             Read CROS-EC host events_b\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 sku                 Read board SKU ID\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	*/
bfeba017 MF	8
bfeba017 MF	9	#include <command.h>
	10	#include <cros_ec.h>
	11	#include <dm.h>
f7ae49fc	12	#include <log.h>
bfeba017 MF	13	#include <dm/device-internal.h>
	14	#include <dm/uclass-internal.h>
	15
	16	/* Note: depends on enum ec_current_image */
	17	static const char * const ec_current_image_name[] = {"unknown", "RO", "RW"};
	18
a2558e87 MF	19	/**
	20	* Decode a flash region parameter
	21	*
	22	* @param argc Number of params remaining
	23	* @param argv List of remaining parameters
185f812c	24	* Return: flash region (EC_FLASH_REGION_...) or -1 on error
a2558e87	25	*/
09140113	26	static int cros_ec_decode_region(int argc, char *const argv[])
a2558e87 MF	27	{
	28	if (argc > 0) {
	29	if (0 == strcmp(*argv, "rw"))
6f1c0430	30	return EC_FLASH_REGION_ACTIVE;
a2558e87 MF	31	else if (0 == strcmp(*argv, "ro"))
	32	return EC_FLASH_REGION_RO;
	33
	34	debug("%s: Invalid region '%s'\n", __func__, *argv);
	35	} else {
	36	debug("%s: Missing region parameter\n", __func__);
	37	}
	38
	39	return -1;
	40	}
	41
bfeba017 MF	42	/**
	43	* Perform a flash read or write command
	44	*
	45	* @param dev CROS-EC device to read/write
	46	* @param is_write 1 do to a write, 0 to do a read
	47	* @param argc Number of arguments
	48	* @param argv Arguments (2 is region, 3 is address)
185f812c	49	* Return: 0 for ok, 1 for a usage error or -ve for ec command error
bfeba017 MF	50	* (negative EC_RES_...)
bfeba017 MF	51	*/
6322a7b6	52	static int do_read_write(struct udevice *dev, int is_write, int argc,
09140113	53	char *const argv[])
bfeba017 MF	54	{
	55	uint32_t offset, size = -1U, region_size;
	56	unsigned long addr;
	57	char *endp;
	58	int region;
	59	int ret;
	60
	61	region = cros_ec_decode_region(argc - 2, argv + 2);
	62	if (region == -1)
	63	return 1;
	64	if (argc < 4)
	65	return 1;
7e5f460e	66	addr = hextoul(argv[3], &endp);
bfeba017 MF	67	if (argv[3] == 0 \|\| endp != 0)
	68	return 1;
	69	if (argc > 4) {
7e5f460e	70	size = hextoul(argv[4], &endp);
bfeba017 MF	71	if (argv[4] == 0 \|\| endp != 0)
	72	return 1;
	73	}
	74
	75	ret = cros_ec_flash_offset(dev, region, &offset, &region_size);
	76	if (ret) {
	77	debug("%s: Could not read region info\n", __func__);
	78	return ret;
	79	}
	80	if (size == -1U)
	81	size = region_size;
	82
	83	ret = is_write ?
	84	cros_ec_flash_write(dev, (uint8_t *)addr, offset, size) :
	85	cros_ec_flash_read(dev, (uint8_t *)addr, offset, size);
	86	if (ret) {
	87	debug("%s: Could not %s region\n", __func__,
	88	is_write ? "write" : "read");
	89	return ret;
	90	}
	91
	92	return 0;
	93	}
	94
8aec32f6 SG	95	static const char *const feat_name[64] = {
	96	"limited",
	97	"flash",
	98	"pwm_fan",
	99	"pwm_keyb",
	100	"lightbar",
	101	"led",
	102	"motion_sense",
	103	"keyb",
	104	"pstore",
	105	"port80",
	106	"thermal",
	107	"bklight_switch",
	108	"wifi_switch",
	109	"host_events",
	110	"gpio",
	111	"i2c",
	112	"charger",
	113	"battery",
	114	"smart_battery",
	115	"hang_detect",
	116	"pmu",
	117	"sub_mcu",
	118	"usb_pd",
	119	"usb_mux",
	120	"motion_sense_fifo",
	121	"vstore",
	122	"usbc_ss_mux_virtual",
	123	"rtc",
	124	"fingerprint",
	125	"touchpad",
	126	"rwsig",
	127	"device_event",
	128	"unified_wake_masks",
	129	"host_event64",
	130	"exec_in_ram",
	131	"cec",
	132	"motion_sense_tight_timestamps",
	133	"refined_tablet_mode_hysteresis",
	134	"efs2",
	135	"scp",
	136	"ish",
	137	"typec_cmd",
	138	"typec_require_ap_mode_entry",
	139	"typec_mux_require_ap_ack",
	140	};
	141
	142	static int do_show_features(struct udevice *dev)
	143	{
	144	u64 feat;
	145	int ret;
	146	uint i;
	147
	148	ret = cros_ec_get_features(dev, &feat);
	149	if (ret)
	150	return ret;
	151	for (i = 0; i < ARRAY_SIZE(feat_name); i++) {
	152	if (feat & (1ULL << i)) {
	153	if (feat_name[i])
	154	printf("%s\n", feat_name[i]);
	155	else
	156	printf("unknown %d\n", i);
	157	}
	158	}
159
160	return 0;
161	}
162
3a6c994f SG	163	static const char *const switch_name[8] = {
	164	"lid open",
	165	"power button pressed",
	166	"write-protect disabled",
	167	NULL,
	168	"dedicated recovery",
	169	NULL,
	170	NULL,
	171	NULL,
	172	};
	173
	174	static int do_show_switches(struct udevice *dev)
	175	{
	176	uint switches;
	177	int ret;
	178	uint i;
	179
	180	ret = cros_ec_get_switches(dev);
	181	if (ret < 0)
	182	return log_msg_ret("get", ret);
	183	switches = ret;
	184	for (i = 0; i < ARRAY_SIZE(switch_name); i++) {
	185	uint mask = 1 << i;
	186
	187	if (switches & mask) {
	188	if (switch_name[i])
	189	printf("%s\n", switch_name[i]);
	190	else
	191	printf("unknown %02x\n", mask);
	192	}
	193	}
	194
	195	return 0;
	196	}
	197
3ae33829 SG	198	static const char *const event_name[] = {
	199	"lid_closed",
	200	"lid_open",
	201	"power_button",
	202	"ac_connected",
	203	"ac_disconnected",
	204	"battery_low",
	205	"battery_critical",
	206	"battery",
	207	"thermal_threshold",
	208	"device",
	209	"thermal",
	210	"usb_charger",
	211	"key_pressed",
	212	"interface_ready",
	213	"keyboard_recovery",
	214	"thermal_shutdown",
	215	"battery_shutdown",
	216	"throttle_start",
	217	"throttle_stop",
	218	"hang_detect",
	219	"hang_reboot",
	220	"pd_mcu",
	221	"battery_status",
	222	"panic",
	223	"keyboard_fastboot",
	224	"rtc",
	225	"mkbp",
	226	"usb_mux",
	227	"mode_change",
	228	"keyboard_recovery_hw_reinit",
	229	"extended",
	230	"invalid",
	231	};
	232
	233	static int do_show_events(struct udevice *dev)
	234	{
	235	u32 events;
	236	int ret;
	237	uint i;
	238
	239	ret = cros_ec_get_host_events(dev, &events);
	240	if (ret)
	241	return ret;
	242	printf("%08x\n", events);
	243	for (i = 0; i < ARRAY_SIZE(event_name); i++) {
	244	enum host_event_code code = i + 1;
	245	u64 mask = EC_HOST_EVENT_MASK(code);
	246
	247	if (events & mask) {
	248	if (event_name[i])
	249	printf("%s\n", event_name[i]);
	250	else
	251	printf("unknown code %#x\n", code);
	252	}
	253	}
	254
	255	return 0;
	256	}
	257
09140113 SG	258	static int do_cros_ec(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	259	char *const argv[])
bfeba017	260	{
6322a7b6	261	struct udevice *dev;
bfeba017 MF	262	const char *cmd;
	263	int ret = 0;
	264
	265	if (argc < 2)
	266	return CMD_RET_USAGE;
	267
	268	cmd = argv[1];
	269	if (0 == strcmp("init", cmd)) {
	270	/* Remove any existing device */
6322a7b6	271	ret = uclass_find_device(UCLASS_CROS_EC, 0, &dev);
bfeba017	272	if (!ret)
6322a7b6 SG	273	device_remove(dev, DM_REMOVE_NORMAL);
6322a7b6 SG	274	ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
bfeba017 MF	275	if (ret) {
	276	printf("Could not init cros_ec device (err %d)\n", ret);
	277	return 1;
	278	}
	279	return 0;
	280	}
	281
6322a7b6	282	ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
bfeba017 MF	283	if (ret) {
	284	printf("Cannot get cros-ec device (err=%d)\n", ret);
	285	return 1;
	286	}
bfeba017 MF	287	if (0 == strcmp("id", cmd)) {
	288	char id[MSG_BYTES];
	289
	290	if (cros_ec_read_id(dev, id, sizeof(id))) {
	291	debug("%s: Could not read KBC ID\n", __func__);
	292	return 1;
	293	}
	294	printf("%s\n", id);
	295	} else if (0 == strcmp("info", cmd)) {
	296	struct ec_response_mkbp_info info;
	297
	298	if (cros_ec_info(dev, &info)) {
	299	debug("%s: Could not read KBC info\n", __func__);
	300	return 1;
	301	}
	302	printf("rows = %u\n", info.rows);
	303	printf("cols = %u\n", info.cols);
8aec32f6 SG	304	} else if (!strcmp("features", cmd)) {
	305	ret = do_show_features(dev);
	306
3a6c994f SG	307	if (ret)
	308	printf("Error: %d\n", ret);
	309	} else if (!strcmp("switches", cmd)) {
	310	ret = do_show_switches(dev);
	311
8aec32f6 SG	312	if (ret)
8aec32f6 SG	313	printf("Error: %d\n", ret);
bfeba017 MF	314	} else if (0 == strcmp("curimage", cmd)) {
	315	enum ec_current_image image;
	316
	317	if (cros_ec_read_current_image(dev, &image)) {
	318	debug("%s: Could not read KBC image\n", __func__);
	319	return 1;
	320	}
	321	printf("%d\n", image);
	322	} else if (0 == strcmp("hash", cmd)) {
	323	struct ec_response_vboot_hash hash;
	324	int i;
	325
a12ef7e2	326	if (cros_ec_read_hash(dev, EC_VBOOT_HASH_OFFSET_ACTIVE, &hash)) {
bfeba017 MF	327	debug("%s: Could not read KBC hash\n", __func__);
	328	return 1;
	329	}
	330
	331	if (hash.hash_type == EC_VBOOT_HASH_TYPE_SHA256)
	332	printf("type: SHA-256\n");
	333	else
	334	printf("type: %d\n", hash.hash_type);
	335
	336	printf("offset: 0x%08x\n", hash.offset);
	337	printf("size: 0x%08x\n", hash.size);
	338
	339	printf("digest: ");
	340	for (i = 0; i < hash.digest_size; i++)
	341	printf("%02x", hash.hash_digest[i]);
	342	printf("\n");
	343	} else if (0 == strcmp("reboot", cmd)) {
	344	int region;
	345	enum ec_reboot_cmd cmd;
	346
	347	if (argc >= 3 && !strcmp(argv[2], "cold")) {
	348	cmd = EC_REBOOT_COLD;
	349	} else {
	350	region = cros_ec_decode_region(argc - 2, argv + 2);
	351	if (region == EC_FLASH_REGION_RO)
	352	cmd = EC_REBOOT_JUMP_RO;
6f1c0430	353	else if (region == EC_FLASH_REGION_ACTIVE)
bfeba017 MF	354	cmd = EC_REBOOT_JUMP_RW;
	355	else
	356	return CMD_RET_USAGE;
	357	}
	358
	359	if (cros_ec_reboot(dev, cmd, 0)) {
	360	debug("%s: Could not reboot KBC\n", __func__);
	361	return 1;
	362	}
	363	} else if (0 == strcmp("events", cmd)) {
3ae33829	364	ret = do_show_events(dev);
bfeba017	365
3ae33829 SG	366	if (ret)
3ae33829 SG	367	printf("Error: %d\n", ret);
bfeba017 MF	368	} else if (0 == strcmp("clrevents", cmd)) {
	369	uint32_t events = 0x7fffffff;
	370
	371	if (argc >= 3)
	372	events = simple_strtol(argv[2], NULL, 0);
	373
	374	if (cros_ec_clear_host_events(dev, events)) {
	375	debug("%s: Could not clear host events\n", __func__);
	376	return 1;
	377	}
	378	} else if (0 == strcmp("read", cmd)) {
	379	ret = do_read_write(dev, 0, argc, argv);
	380	if (ret > 0)
	381	return CMD_RET_USAGE;
	382	} else if (0 == strcmp("write", cmd)) {
	383	ret = do_read_write(dev, 1, argc, argv);
	384	if (ret > 0)
	385	return CMD_RET_USAGE;
	386	} else if (0 == strcmp("erase", cmd)) {
	387	int region = cros_ec_decode_region(argc - 2, argv + 2);
	388	uint32_t offset, size;
	389
	390	if (region == -1)
	391	return CMD_RET_USAGE;
	392	if (cros_ec_flash_offset(dev, region, &offset, &size)) {
	393	debug("%s: Could not read region info\n", __func__);
	394	ret = -1;
	395	} else {
	396	ret = cros_ec_flash_erase(dev, offset, size);
	397	if (ret) {
	398	debug("%s: Could not erase region\n",
	399	__func__);
	400	}
	401	}
	402	} else if (0 == strcmp("regioninfo", cmd)) {
	403	int region = cros_ec_decode_region(argc - 2, argv + 2);
	404	uint32_t offset, size;
	405
	406	if (region == -1)
	407	return CMD_RET_USAGE;
	408	ret = cros_ec_flash_offset(dev, region, &offset, &size);
	409	if (ret) {
	410	debug("%s: Could not read region info\n", __func__);
	411	} else {
	412	printf("Region: %s\n", region == EC_FLASH_REGION_RO ?
	413	"RO" : "RW");
	414	printf("Offset: %x\n", offset);
	415	printf("Size: %x\n", size);
	416	}
	417	} else if (0 == strcmp("flashinfo", cmd)) {
	418	struct ec_response_flash_info p;
	419
	420	ret = cros_ec_read_flashinfo(dev, &p);
	421	if (!ret) {
	422	printf("Flash size: %u\n", p.flash_size);
	423	printf("Write block size: %u\n", p.write_block_size);
	424	printf("Erase block size: %u\n", p.erase_block_size);
	425	}
	426	} else if (0 == strcmp("vbnvcontext", cmd)) {
	427	uint8_t block[EC_VBNV_BLOCK_SIZE];
	428	char buf[3];
	429	int i, len;
	430	unsigned long result;
	431
432	if (argc <= 2) {
6322a7b6 SG	433	ret = cros_ec_read_nvdata(dev, block,
6322a7b6 SG	434	EC_VBNV_BLOCK_SIZE);
bfeba017 MF	435	if (!ret) {
	436	printf("vbnv_block: ");
	437	for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++)
	438	printf("%02x", block[i]);
	439	putc('\n');
	440	}
	441	} else {
	442	/*
	443	* TODO(clchiou): Move this to a utility function as
	444	* cmd_spi might want to call it.
	445	*/
	446	memset(block, 0, EC_VBNV_BLOCK_SIZE);
	447	len = strlen(argv[2]);
	448	buf[2] = '\0';
	449	for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++) {
	450	if (i * 2 >= len)
	451	break;
	452	buf[0] = argv[2][i * 2];
	453	if (i * 2 + 1 >= len)
	454	buf[1] = '0';
	455	else
	456	buf[1] = argv[2][i * 2 + 1];
	457	strict_strtoul(buf, 16, &result);
	458	block[i] = result;
	459	}
6322a7b6 SG	460	ret = cros_ec_write_nvdata(dev, block,
6322a7b6 SG	461	EC_VBNV_BLOCK_SIZE);
bfeba017 MF	462	}
	463	if (ret) {
	464	debug("%s: Could not %s VbNvContext\n", __func__,
	465	argc <= 2 ? "read" : "write");
	466	}
	467	} else if (0 == strcmp("test", cmd)) {
	468	int result = cros_ec_test(dev);
	469
	470	if (result)
	471	printf("Test failed with error %d\n", result);
	472	else
	473	puts("Test passed\n");
	474	} else if (0 == strcmp("version", cmd)) {
	475	struct ec_response_get_version *p;
	476	char *build_string;
	477
	478	ret = cros_ec_read_version(dev, &p);
	479	if (!ret) {
	480	/* Print versions */
	481	printf("RO version: %1.*s\n",
	482	(int)sizeof(p->version_string_ro),
	483	p->version_string_ro);
	484	printf("RW version: %1.*s\n",
	485	(int)sizeof(p->version_string_rw),
	486	p->version_string_rw);
	487	printf("Firmware copy: %s\n",
	488	(p->current_image <
	489	ARRAY_SIZE(ec_current_image_name) ?
	490	ec_current_image_name[p->current_image] :
	491	"?"));
	492	ret = cros_ec_read_build_info(dev, &build_string);
	493	if (!ret)
	494	printf("Build info: %s\n", build_string);
	495	}
	496	} else if (0 == strcmp("ldo", cmd)) {
	497	uint8_t index, state;
	498	char *endp;
	499
	500	if (argc < 3)
	501	return CMD_RET_USAGE;
0b1284eb	502	index = dectoul(argv[2], &endp);
bfeba017 MF	503	if (argv[2] == 0 \|\| endp != 0)
	504	return CMD_RET_USAGE;
	505	if (argc > 3) {
0b1284eb	506	state = dectoul(argv[3], &endp);
bfeba017 MF	507	if (argv[3] == 0 \|\| endp != 0)
bfeba017 MF	508	return CMD_RET_USAGE;
6322a7b6	509	ret = cros_ec_set_ldo(dev, index, state);
bfeba017	510	} else {
6322a7b6	511	ret = cros_ec_get_ldo(dev, index, &state);
bfeba017 MF	512	if (!ret) {
	513	printf("LDO%d: %s\n", index,
	514	state == EC_LDO_STATE_ON ?
	515	"on" : "off");
	516	}
	517	}
	518
	519	if (ret) {
	520	debug("%s: Could not access LDO%d\n", __func__, index);
	521	return ret;
	522	}
7791df57 SG	523	} else if (!strcmp("sku", cmd)) {
	524	ret = cros_ec_get_sku_id(dev);
	525
	526	if (ret >= 0) {
	527	printf("%d\n", ret);
	528	ret = 0;
	529	} else {
	530	printf("Error: %d\n", ret);
	531	}
bfeba017 MF	532	} else {
	533	return CMD_RET_USAGE;
	534	}
	535
	536	if (ret < 0) {
	537	printf("Error: CROS-EC command failed (error %d)\n", ret);
	538	ret = 1;
	539	}
	540
	541	return ret;
	542	}
	543
	544	U_BOOT_CMD(
	545	crosec, 6, 1, do_cros_ec,
	546	"CROS-EC utility command",
	547	"init Re-init CROS-EC (done on startup automatically)\n"
	548	"crosec id Read CROS-EC ID\n"
	549	"crosec info Read CROS-EC info\n"
8aec32f6	550	"crosec features Read CROS-EC features\n"
3a6c994f	551	"crosec switches Read CROS-EC switches\n"
bfeba017 MF	552	"crosec curimage Read CROS-EC current image\n"
	553	"crosec hash Read CROS-EC hash\n"
	554	"crosec reboot [rw \| ro \| cold] Reboot CROS-EC\n"
	555	"crosec events Read CROS-EC host events\n"
3ae33829	556	"crosec eventsb Read CROS-EC host events_b\n"
bfeba017 MF	557	"crosec clrevents [mask] Clear CROS-EC host events\n"
	558	"crosec regioninfo <ro\|rw> Read image info\n"
	559	"crosec flashinfo Read flash info\n"
	560	"crosec erase <ro\|rw> Erase EC image\n"
	561	"crosec read <ro\|rw> <addr> [<size>] Read EC image\n"
	562	"crosec write <ro\|rw> <addr> [<size>] Write EC image\n"
	563	"crosec vbnvcontext [hexstring] Read [write] VbNvContext from EC\n"
	564	"crosec ldo <idx> [<state>] Switch/Read LDO state\n"
7791df57	565	"crosec sku Read board SKU ID\n"
bfeba017 MF	566	"crosec test run tests on cros_ec\n"
	567	"crosec version Read CROS-EC version"
	568	);