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

// SPDX-License-Identifier: GPL-2.0+
/*
 *  SCMI (System Control and Management Interface) utility command
 *
 *  Copyright (c) 2023 Linaro Limited
 *		Author: AKASHI Takahiro
 */

#include <command.h>
#include <exports.h>
#include <scmi_agent.h>
#include <scmi_agent-uclass.h>
#include <stdlib.h>
#include <asm/types.h>
#include <dm/device.h>
#include <dm/uclass.h> /* uclass_get_device */
#include <linux/bitfield.h>
#include <linux/bitops.h>

struct {
	enum scmi_std_protocol id;
	const char *name;
} protocol_name[] = {
	{SCMI_PROTOCOL_ID_BASE, "Base"},
	{SCMI_PROTOCOL_ID_POWER_DOMAIN, "Power domain management"},
	{SCMI_PROTOCOL_ID_SYSTEM, "System power management"},
	{SCMI_PROTOCOL_ID_PERF, "Performance domain management"},
	{SCMI_PROTOCOL_ID_CLOCK, "Clock management"},
	{SCMI_PROTOCOL_ID_SENSOR, "Sensor management"},
	{SCMI_PROTOCOL_ID_RESET_DOMAIN, "Reset domain management"},
	{SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN, "Voltage domain management"},
};

/**
 * get_agent() - get SCMI agent device
 *
 * Return:	Pointer to SCMI agent device on success, NULL on failure
 */
static struct udevice *get_agent(void)
{
	struct udevice *agent;

	if (uclass_get_device(UCLASS_SCMI_AGENT, 0, &agent)) {
		printf("Cannot find any SCMI agent\n");
		return NULL;
	}

	return agent;
}

/**
 * get_base_proto() - get SCMI base protocol device
 * @agent:	SCMI agent device
 *
 * Return:	Pointer to SCMI base protocol device on success,
 *		NULL on failure
 */
static struct udevice *get_base_proto(struct udevice *agent)
{
	struct udevice *base_proto;

	if (!agent) {
		agent = get_agent();
		if (!agent)
			return NULL;
	}

	base_proto = scmi_get_protocol(agent, SCMI_PROTOCOL_ID_BASE);
	if (!base_proto) {
		printf("SCMI base protocol not found\n");
		return NULL;
	}

	return base_proto;
}

/**
 * get_proto_name() - get the name of SCMI protocol
 *
 * @id:		SCMI Protocol ID
 *
 * Get the printable name of the protocol, @id
 *
 * Return:	Name string on success, NULL on failure
 */
static const char *get_proto_name(enum scmi_std_protocol id)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(protocol_name); i++)
		if (id == protocol_name[i].id)
			return protocol_name[i].name;

	return NULL;
}

/**
 * do_scmi_info() - get the information of SCMI services
 *
 * @cmdtp:	Command table
 * @flag:	Command flag
 * @argc:	Number of arguments
 * @argv:	Argument array
 *
 * Get the information of SCMI services using various interfaces
 * provided by the Base protocol.
 *
 * Return:	CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 */
static int do_scmi_info(struct cmd_tbl *cmdtp, int flag, int argc,
			char * const argv[])
{
	struct udevice *agent, *base_proto;
	u32 agent_id, num_protocols;
	u8 *agent_name, *protocols;
	int i, ret;

	if (argc != 1)
		return CMD_RET_USAGE;

	agent = get_agent();
	if (!agent)
		return CMD_RET_FAILURE;
	base_proto = get_base_proto(agent);
	if (!base_proto)
		return CMD_RET_FAILURE;

	printf("SCMI device: %s\n", agent->name);
	printf("  protocol version: 0x%x\n", scmi_version(agent));
	printf("  # of agents: %d\n", scmi_num_agents(agent));
	for (i = 0; i < scmi_num_agents(agent); i++) {
		ret = scmi_base_discover_agent(base_proto, i, &agent_id,
					       &agent_name);
		if (ret) {
			if (ret != -EOPNOTSUPP)
				printf("base_discover_agent() failed for id: %d (%d)\n",
				       i, ret);
			break;
		}
		printf("    %c%2d: %s\n", i == scmi_agent_id(agent) ? '>' : ' ',
		       i, agent_name);
		free(agent_name);
	}
	printf("  # of protocols: %d\n", scmi_num_protocols(agent));
	num_protocols = scmi_num_protocols(agent);
	protocols = scmi_protocols(agent);
	if (protocols)
		for (i = 0; i < num_protocols; i++)
			printf("      %s\n", get_proto_name(protocols[i]));
	printf("  vendor: %s\n", scmi_vendor(agent));
	printf("  sub vendor: %s\n", scmi_sub_vendor(agent));
	printf("  impl version: 0x%x\n", scmi_impl_version(agent));

	return CMD_RET_SUCCESS;
}

/**
 * do_scmi_set_dev() - set access permission to device
 *
 * @cmdtp:	Command table
 * @flag:	Command flag
 * @argc:	Number of arguments
 * @argv:	Argument array
 *
 * Set access permission to device with SCMI_BASE_SET_DEVICE_PERMISSIONS
 *
 * Return:	CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 */
static int do_scmi_set_dev(struct cmd_tbl *cmdtp, int flag, int argc,
			   char * const argv[])
{
	u32 agent_id, device_id, flags, attributes;
	char *end;
	struct udevice *base_proto;
	int ret;

	if (argc != 4)
		return CMD_RET_USAGE;

	agent_id = simple_strtoul(argv[1], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	device_id = simple_strtoul(argv[2], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	flags = simple_strtoul(argv[3], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	base_proto = get_base_proto(NULL);
	if (!base_proto)
		return CMD_RET_FAILURE;

	ret = scmi_base_protocol_message_attrs(base_proto,
					       SCMI_BASE_SET_DEVICE_PERMISSIONS,
					       &attributes);
	if (ret) {
		printf("This operation is not supported\n");
		return CMD_RET_FAILURE;
	}

	ret = scmi_base_set_device_permissions(base_proto, agent_id,
					       device_id, flags);
	if (ret) {
		printf("%s access to device:%u failed (%d)\n",
		       flags ? "Allowing" : "Denying", device_id, ret);
		return CMD_RET_FAILURE;
	}

	return CMD_RET_SUCCESS;
}

/**
 * do_scmi_set_proto() - set protocol permission to device
 *
 * @cmdtp:	Command table
 * @flag:	Command flag
 * @argc:	Number of arguments
 * @argv:	Argument array
 *
 * Set protocol permission to device with SCMI_BASE_SET_PROTOCOL_PERMISSIONS
 *
 * Return:	CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 */
static int do_scmi_set_proto(struct cmd_tbl *cmdtp, int flag, int argc,
			     char * const argv[])
{
	u32 agent_id, device_id, protocol_id, flags, attributes;
	char *end;
	struct udevice *base_proto;
	int ret;

	if (argc != 5)
		return CMD_RET_USAGE;

	agent_id = simple_strtoul(argv[1], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	device_id = simple_strtoul(argv[2], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	protocol_id = simple_strtoul(argv[3], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	flags = simple_strtoul(argv[4], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	base_proto = get_base_proto(NULL);
	if (!base_proto)
		return CMD_RET_FAILURE;

	ret = scmi_base_protocol_message_attrs(base_proto,
					       SCMI_BASE_SET_PROTOCOL_PERMISSIONS,
					       &attributes);
	if (ret) {
		printf("This operation is not supported\n");
		return CMD_RET_FAILURE;
	}

	ret = scmi_base_set_protocol_permissions(base_proto, agent_id,
						 device_id, protocol_id,
						 flags);
	if (ret) {
		printf("%s access to protocol:0x%x on device:%u failed (%d)\n",
		       flags ? "Allowing" : "Denying", protocol_id, device_id,
		       ret);
		return CMD_RET_FAILURE;
	}

	return CMD_RET_SUCCESS;
}

/**
 * do_scmi_reset() - reset platform resource settings
 *
 * @cmdtp:	Command table
 * @flag:	Command flag
 * @argc:	Number of arguments
 * @argv:	Argument array
 *
 * Reset platform resource settings with BASE_RESET_AGENT_CONFIGURATION
 *
 * Return:	CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 */
static int do_scmi_reset(struct cmd_tbl *cmdtp, int flag, int argc,
			 char * const argv[])
{
	u32 agent_id, flags, attributes;
	char *end;
	struct udevice *base_proto;
	int ret;

	if (argc != 3)
		return CMD_RET_USAGE;

	agent_id = simple_strtoul(argv[1], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	flags = simple_strtoul(argv[2], &end, 16);
	if (*end != '\0')
		return CMD_RET_USAGE;

	base_proto = get_base_proto(NULL);
	if (!base_proto)
		return CMD_RET_FAILURE;

	ret = scmi_base_protocol_message_attrs(base_proto,
					       SCMI_BASE_RESET_AGENT_CONFIGURATION,
					       &attributes);
	if (ret) {
		printf("Reset is not supported\n");
		return CMD_RET_FAILURE;
	}

	ret = scmi_base_reset_agent_configuration(base_proto, agent_id, flags);
	if (ret) {
		printf("Reset failed (%d)\n", ret);
		return CMD_RET_FAILURE;
	}

	return CMD_RET_SUCCESS;
}

static struct cmd_tbl cmd_scmi_sub[] = {
	U_BOOT_CMD_MKENT(info, CONFIG_SYS_MAXARGS, 1,
			 do_scmi_info, "", ""),
	U_BOOT_CMD_MKENT(perm_dev, CONFIG_SYS_MAXARGS, 1,
			 do_scmi_set_dev, "", ""),
	U_BOOT_CMD_MKENT(perm_proto, CONFIG_SYS_MAXARGS, 1,
			 do_scmi_set_proto, "", ""),
	U_BOOT_CMD_MKENT(reset, CONFIG_SYS_MAXARGS, 1,
			 do_scmi_reset, "", ""),
};

/**
 * do_scmi() - SCMI utility
 *
 * @cmdtp:	Command table
 * @flag:	Command flag
 * @argc:	Number of arguments
 * @argv:	Argument array
 *
 * Provide user interfaces to SCMI protocols.
 *
 * Return:	CMD_RET_SUCCESS on success,
 *		CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
 */
static int do_scmi(struct cmd_tbl *cmdtp, int flag,
		   int argc, char *const argv[])
{
	struct cmd_tbl *cp;

	if (argc < 2)
		return CMD_RET_USAGE;

	argc--; argv++;

	cp = find_cmd_tbl(argv[0], cmd_scmi_sub, ARRAY_SIZE(cmd_scmi_sub));
	if (!cp)
		return CMD_RET_USAGE;

	return cp->cmd(cmdtp, flag, argc, argv);
}

U_BOOT_LONGHELP(scmi,
	" - SCMI utility\n"
	" info - get the info of SCMI services\n"
	" perm_dev <agent-id in hex> <device-id in hex> <flags in hex>\n"
	"   - set access permission to device\n"
	" perm_proto <agent-id in hex> <device-id in hex> <protocol-id in hex> <flags in hex>\n"
	"   - set protocol permission to device\n"
	" reset <agent-id in hex> <flags in hex>\n"
	"   - reset platform resource settings\n");

U_BOOT_CMD(scmi, CONFIG_SYS_MAXARGS, 0, do_scmi, "SCMI utility",
	   scmi_help_text);
Commit	Line	Data
8055f90b AT	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* SCMI (System Control and Management Interface) utility command
	4	*
	5	* Copyright (c) 2023 Linaro Limited
	6	* Author: AKASHI Takahiro
	7	*/
	8
	9	#include <command.h>
	10	#include <exports.h>
	11	#include <scmi_agent.h>
	12	#include <scmi_agent-uclass.h>
	13	#include <stdlib.h>
	14	#include <asm/types.h>
	15	#include <dm/device.h>
	16	#include <dm/uclass.h> /* uclass_get_device */
	17	#include <linux/bitfield.h>
	18	#include <linux/bitops.h>
	19
	20	struct {
	21	enum scmi_std_protocol id;
	22	const char *name;
	23	} protocol_name[] = {
	24	{SCMI_PROTOCOL_ID_BASE, "Base"},
	25	{SCMI_PROTOCOL_ID_POWER_DOMAIN, "Power domain management"},
	26	{SCMI_PROTOCOL_ID_SYSTEM, "System power management"},
	27	{SCMI_PROTOCOL_ID_PERF, "Performance domain management"},
	28	{SCMI_PROTOCOL_ID_CLOCK, "Clock management"},
	29	{SCMI_PROTOCOL_ID_SENSOR, "Sensor management"},
	30	{SCMI_PROTOCOL_ID_RESET_DOMAIN, "Reset domain management"},
	31	{SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN, "Voltage domain management"},
	32	};
	33
	34	/**
	35	* get_agent() - get SCMI agent device
	36	*
	37	* Return: Pointer to SCMI agent device on success, NULL on failure
	38	*/
	39	static struct udevice *get_agent(void)
	40	{
	41	struct udevice *agent;
	42
	43	if (uclass_get_device(UCLASS_SCMI_AGENT, 0, &agent)) {
	44	printf("Cannot find any SCMI agent\n");
	45	return NULL;
	46	}
	47
	48	return agent;
	49	}
	50
	51	/**
	52	* get_base_proto() - get SCMI base protocol device
	53	* @agent: SCMI agent device
	54	*
	55	* Return: Pointer to SCMI base protocol device on success,
	56	* NULL on failure
	57	*/
	58	static struct udevice get_base_proto(struct udevice agent)
	59	{
	60	struct udevice *base_proto;
	61
	62	if (!agent) {
	63	agent = get_agent();
	64	if (!agent)
65	return NULL;
66	}
67
68	base_proto = scmi_get_protocol(agent, SCMI_PROTOCOL_ID_BASE);
69	if (!base_proto) {
70	printf("SCMI base protocol not found\n");
71	return NULL;
72	}
73
74	return base_proto;
75	}
76
77	/**
78	* get_proto_name() - get the name of SCMI protocol
79	*
80	* @id: SCMI Protocol ID
81	*
82	* Get the printable name of the protocol, @id
83	*
84	* Return: Name string on success, NULL on failure
85	*/
86	static const char *get_proto_name(enum scmi_std_protocol id)
87	{
88	int i;
89
90	for (i = 0; i < ARRAY_SIZE(protocol_name); i++)
91	if (id == protocol_name[i].id)
92	return protocol_name[i].name;
93
94	return NULL;
95	}
96
97	/**
98	* do_scmi_info() - get the information of SCMI services
99	*
100	* @cmdtp: Command table
101	* @flag: Command flag
102	* @argc: Number of arguments
103	* @argv: Argument array
104	*
105	* Get the information of SCMI services using various interfaces
106	* provided by the Base protocol.
107	*
108	* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
109	*/
110	static int do_scmi_info(struct cmd_tbl *cmdtp, int flag, int argc,
111	char * const argv[])
112	{
113	struct udevice agent, base_proto;
114	u32 agent_id, num_protocols;
115	u8 agent_name, protocols;
116	int i, ret;
117
118	if (argc != 1)
119	return CMD_RET_USAGE;
120
121	agent = get_agent();
122	if (!agent)
123	return CMD_RET_FAILURE;
124	base_proto = get_base_proto(agent);
125	if (!base_proto)
126	return CMD_RET_FAILURE;
127
128	printf("SCMI device: %s\n", agent->name);
129	printf(" protocol version: 0x%x\n", scmi_version(agent));
130	printf(" # of agents: %d\n", scmi_num_agents(agent));
131	for (i = 0; i < scmi_num_agents(agent); i++) {
132	ret = scmi_base_discover_agent(base_proto, i, &agent_id,
133	&agent_name);
134	if (ret) {
135	if (ret != -EOPNOTSUPP)
136	printf("base_discover_agent() failed for id: %d (%d)\n",
137	i, ret);
138	break;
139	}
140	printf(" %c%2d: %s\n", i == scmi_agent_id(agent) ? '>' : ' ',
141	i, agent_name);
142	free(agent_name);
143	}
144	printf(" # of protocols: %d\n", scmi_num_protocols(agent));
145	num_protocols = scmi_num_protocols(agent);
146	protocols = scmi_protocols(agent);
147	if (protocols)
148	for (i = 0; i < num_protocols; i++)
149	printf(" %s\n", get_proto_name(protocols[i]));
150	printf(" vendor: %s\n", scmi_vendor(agent));
151	printf(" sub vendor: %s\n", scmi_sub_vendor(agent));
152	printf(" impl version: 0x%x\n", scmi_impl_version(agent));
153
154	return CMD_RET_SUCCESS;
155	}
156
157	/**
158	* do_scmi_set_dev() - set access permission to device
159	*
160	* @cmdtp: Command table
161	* @flag: Command flag
162	* @argc: Number of arguments
163	* @argv: Argument array
164	*
165	* Set access permission to device with SCMI_BASE_SET_DEVICE_PERMISSIONS
166	*
167	* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
168	*/
169	static int do_scmi_set_dev(struct cmd_tbl *cmdtp, int flag, int argc,
170	char * const argv[])
171	{
172	u32 agent_id, device_id, flags, attributes;
173	char *end;
174	struct udevice *base_proto;
175	int ret;
176
177	if (argc != 4)
178	return CMD_RET_USAGE;
179
180	agent_id = simple_strtoul(argv[1], &end, 16);
181	if (*end != '\0')
182	return CMD_RET_USAGE;
183
184	device_id = simple_strtoul(argv[2], &end, 16);
185	if (*end != '\0')
186	return CMD_RET_USAGE;
187
188	flags = simple_strtoul(argv[3], &end, 16);
189	if (*end != '\0')
190	return CMD_RET_USAGE;
191
192	base_proto = get_base_proto(NULL);
193	if (!base_proto)
194	return CMD_RET_FAILURE;
195
196	ret = scmi_base_protocol_message_attrs(base_proto,
197	SCMI_BASE_SET_DEVICE_PERMISSIONS,
198	&attributes);
199	if (ret) {
200	printf("This operation is not supported\n");
201	return CMD_RET_FAILURE;
202	}
203
204	ret = scmi_base_set_device_permissions(base_proto, agent_id,
205	device_id, flags);
206	if (ret) {
207	printf("%s access to device:%u failed (%d)\n",
208	flags ? "Allowing" : "Denying", device_id, ret);
209	return CMD_RET_FAILURE;
210	}
211
212	return CMD_RET_SUCCESS;
213	}
214
215	/**
216	* do_scmi_set_proto() - set protocol permission to device
217	*
218	* @cmdtp: Command table
219	* @flag: Command flag
220	* @argc: Number of arguments
221	* @argv: Argument array
222	*
223	* Set protocol permission to device with SCMI_BASE_SET_PROTOCOL_PERMISSIONS
224	*
225	* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
226	*/
227	static int do_scmi_set_proto(struct cmd_tbl *cmdtp, int flag, int argc,
228	char * const argv[])
229	{
230	u32 agent_id, device_id, protocol_id, flags, attributes;
231	char *end;
232	struct udevice *base_proto;
233	int ret;
234
235	if (argc != 5)
236	return CMD_RET_USAGE;
237
238	agent_id = simple_strtoul(argv[1], &end, 16);
239	if (*end != '\0')
240	return CMD_RET_USAGE;
241
242	device_id = simple_strtoul(argv[2], &end, 16);
243	if (*end != '\0')
244	return CMD_RET_USAGE;
245
246	protocol_id = simple_strtoul(argv[3], &end, 16);
247	if (*end != '\0')
248	return CMD_RET_USAGE;
249
250	flags = simple_strtoul(argv[4], &end, 16);
251	if (*end != '\0')
252	return CMD_RET_USAGE;
253
254	base_proto = get_base_proto(NULL);
255	if (!base_proto)
256	return CMD_RET_FAILURE;
257
258	ret = scmi_base_protocol_message_attrs(base_proto,
259	SCMI_BASE_SET_PROTOCOL_PERMISSIONS,
260	&attributes);
261	if (ret) {
262	printf("This operation is not supported\n");
263	return CMD_RET_FAILURE;
264	}
265
266	ret = scmi_base_set_protocol_permissions(base_proto, agent_id,
267	device_id, protocol_id,
268	flags);
269	if (ret) {
270	printf("%s access to protocol:0x%x on device:%u failed (%d)\n",
271	flags ? "Allowing" : "Denying", protocol_id, device_id,
272	ret);
273	return CMD_RET_FAILURE;
274	}
275
276	return CMD_RET_SUCCESS;
277	}
278
279	/**
280	* do_scmi_reset() - reset platform resource settings
281	*
282	* @cmdtp: Command table
283	* @flag: Command flag
284	* @argc: Number of arguments
285	* @argv: Argument array
286	*
287	* Reset platform resource settings with BASE_RESET_AGENT_CONFIGURATION
288	*
289	* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
290	*/
291	static int do_scmi_reset(struct cmd_tbl *cmdtp, int flag, int argc,
292	char * const argv[])
293	{
294	u32 agent_id, flags, attributes;
295	char *end;
296	struct udevice *base_proto;
297	int ret;
298
299	if (argc != 3)
300	return CMD_RET_USAGE;
301
302	agent_id = simple_strtoul(argv[1], &end, 16);
303	if (*end != '\0')
304	return CMD_RET_USAGE;
305
306	flags = simple_strtoul(argv[2], &end, 16);
307	if (*end != '\0')
308	return CMD_RET_USAGE;
309
310	base_proto = get_base_proto(NULL);
311	if (!base_proto)
312	return CMD_RET_FAILURE;
313
314	ret = scmi_base_protocol_message_attrs(base_proto,
315	SCMI_BASE_RESET_AGENT_CONFIGURATION,
316	&attributes);
317	if (ret) {
318	printf("Reset is not supported\n");
319	return CMD_RET_FAILURE;
320	}
321
322	ret = scmi_base_reset_agent_configuration(base_proto, agent_id, flags);
323	if (ret) {
324	printf("Reset failed (%d)\n", ret);
325	return CMD_RET_FAILURE;
326	}
327
328	return CMD_RET_SUCCESS;
329	}
330
331	static struct cmd_tbl cmd_scmi_sub[] = {
332	U_BOOT_CMD_MKENT(info, CONFIG_SYS_MAXARGS, 1,
333	do_scmi_info, "", ""),
334	U_BOOT_CMD_MKENT(perm_dev, CONFIG_SYS_MAXARGS, 1,
335	do_scmi_set_dev, "", ""),
336	U_BOOT_CMD_MKENT(perm_proto, CONFIG_SYS_MAXARGS, 1,
337	do_scmi_set_proto, "", ""),
338	U_BOOT_CMD_MKENT(reset, CONFIG_SYS_MAXARGS, 1,
339	do_scmi_reset, "", ""),
340	};
341
342	/**
343	* do_scmi() - SCMI utility
344	*
345	* @cmdtp: Command table
346	* @flag: Command flag
347	* @argc: Number of arguments
348	* @argv: Argument array
349	*
350	* Provide user interfaces to SCMI protocols.
351	*
352	* Return: CMD_RET_SUCCESS on success,
353	* CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
354	*/
355	static int do_scmi(struct cmd_tbl *cmdtp, int flag,
356	int argc, char *const argv[])
357	{
358	struct cmd_tbl *cp;
359
360	if (argc < 2)
361	return CMD_RET_USAGE;
362
363	argc--; argv++;
364
365	cp = find_cmd_tbl(argv[0], cmd_scmi_sub, ARRAY_SIZE(cmd_scmi_sub));
366	if (!cp)
367	return CMD_RET_USAGE;
368
369	return cp->cmd(cmdtp, flag, argc, argv);
370	}
371
b85ecb27	372	U_BOOT_LONGHELP(scmi,
8055f90b AT	373	" - SCMI utility\n"
	374	" info - get the info of SCMI services\n"
	375	" perm_dev <agent-id in hex> <device-id in hex> <flags in hex>\n"
	376	" - set access permission to device\n"
	377	" perm_proto <agent-id in hex> <device-id in hex> <protocol-id in hex> <flags in hex>\n"
	378	" - set protocol permission to device\n"
	379	" reset <agent-id in hex> <flags in hex>\n"
b85ecb27	380	" - reset platform resource settings\n");
8055f90b AT	381
	382	U_BOOT_CMD(scmi, CONFIG_SYS_MAXARGS, 0, do_scmi, "SCMI utility",
	383	scmi_help_text);