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

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 2015 Google, Inc
 * Written by Simon Glass <[email protected]>
 * Copyright (c) 2017 Álvaro Fernández Rojas <[email protected]>
 */

#include <common.h>
#include <command.h>
#include <cpu.h>
#include <dm.h>
#include <errno.h>

static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
	"L1 cache",
	"MMU",
	"Microcode",
	"Device ID",
};

static int print_cpu_list(bool detail)
{
	struct udevice *dev;
	char buf[100];

	for (uclass_first_device(UCLASS_CPU, &dev);
		     dev;
		     uclass_next_device(&dev)) {
		struct cpu_plat *plat = dev_get_parent_plat(dev);
		struct cpu_info info;
		bool first = true;
		int ret, i;

		ret = cpu_get_desc(dev, buf, sizeof(buf));
		printf("%3d: %-10s %s\n", dev_seq(dev), dev->name,
		       ret ? "<no description>" : buf);
		if (!detail)
			continue;
		ret = cpu_get_info(dev, &info);
		if (ret) {
			printf("\t(no detail available");
			if (ret != -ENOSYS)
				printf(": err=%d", ret);
			printf(")\n");
			continue;
		}
		printf("\tID = %d, freq = ", plat->cpu_id);
		print_freq(info.cpu_freq, "");
		for (i = 0; i < CPU_FEAT_COUNT; i++) {
			if (info.features & (1 << i)) {
				printf("%s%s", first ? ": " : ", ",
				       cpu_feature_name[i]);
				first = false;
			}
		}
		printf("\n");
		if (info.features & (1 << CPU_FEAT_UCODE))
			printf("\tMicrocode version %#x\n",
			       plat->ucode_version);
		if (info.features & (1 << CPU_FEAT_DEVICE_ID))
			printf("\tDevice ID %#lx\n", plat->device_id);
	}

	return 0;
}

static int do_cpu_list(struct cmd_tbl *cmdtp, int flag, int argc,
		       char *const argv[])
{
	if (print_cpu_list(false))
		return CMD_RET_FAILURE;

	return 0;
}

static int do_cpu_detail(struct cmd_tbl *cmdtp, int flag, int argc,
			 char *const argv[])
{
	if (print_cpu_list(true))
		return CMD_RET_FAILURE;

	return 0;
}

static struct cmd_tbl cmd_cpu_sub[] = {
	U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
	U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
};

/*
 * Process a cpu sub-command
 */
static int do_cpu(struct cmd_tbl *cmdtp, int flag, int argc,
		  char *const argv[])
{
	struct cmd_tbl *c = NULL;

	/* Strip off leading 'cpu' command argument */
	argc--;
	argv++;

	if (argc)
		c = find_cmd_tbl(argv[0], cmd_cpu_sub,
				 ARRAY_SIZE(cmd_cpu_sub));

	if (c)
		return c->cmd(cmdtp, flag, argc, argv);
	else
		return CMD_RET_USAGE;
}

U_BOOT_CMD(
	cpu, 2, 1, do_cpu,
	"display information about CPUs",
	"list	- list available CPUs\n"
	"cpu detail	- show CPU detail"
);
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
8e2fac05 SG	2	/*
	3	* Copyright (c) 2015 Google, Inc
	4	* Written by Simon Glass <[email protected]>
320eca5c	5	* Copyright (c) 2017 Álvaro Fernández Rojas <[email protected]>
8e2fac05 SG	6	*/
	7
	8	#include <common.h>
	9	#include <command.h>
	10	#include <cpu.h>
	11	#include <dm.h>
166c3984	12	#include <errno.h>
8e2fac05 SG	13
	14	static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
	15	"L1 cache",
	16	"MMU",
740d5d34	17	"Microcode",
22c2c179	18	"Device ID",
8e2fac05 SG	19	};
	20
	21	static int print_cpu_list(bool detail)
	22	{
	23	struct udevice *dev;
8e2fac05	24	char buf[100];
8e2fac05	25
320eca5c ÁFR	26	for (uclass_first_device(UCLASS_CPU, &dev);
	27	dev;
	28	uclass_next_device(&dev)) {
8a8d24bd	29	struct cpu_plat *plat = dev_get_parent_plat(dev);
8e2fac05	30	struct cpu_info info;
320eca5c ÁFR	31	bool first = true;
320eca5c ÁFR	32	int ret, i;
8e2fac05 SG	33
8e2fac05 SG	34	ret = cpu_get_desc(dev, buf, sizeof(buf));
8b85dfc6	35	printf("%3d: %-10s %s\n", dev_seq(dev), dev->name,
8e2fac05 SG	36	ret ? "<no description>" : buf);
	37	if (!detail)
	38	continue;
	39	ret = cpu_get_info(dev, &info);
	40	if (ret) {
	41	printf("\t(no detail available");
	42	if (ret != -ENOSYS)
320eca5c	43	printf(": err=%d", ret);
8e2fac05 SG	44	printf(")\n");
	45	continue;
	46	}
	47	printf("\tID = %d, freq = ", plat->cpu_id);
	48	print_freq(info.cpu_freq, "");
8e2fac05 SG	49	for (i = 0; i < CPU_FEAT_COUNT; i++) {
	50	if (info.features & (1 << i)) {
	51	printf("%s%s", first ? ": " : ", ",
	52	cpu_feature_name[i]);
	53	first = false;
	54	}
	55	}
	56	printf("\n");
320eca5c	57	if (info.features & (1 << CPU_FEAT_UCODE))
740d5d34 SG	58	printf("\tMicrocode version %#x\n",
740d5d34 SG	59	plat->ucode_version);
740d5d34 SG	60	if (info.features & (1 << CPU_FEAT_DEVICE_ID))
740d5d34 SG	61	printf("\tDevice ID %#lx\n", plat->device_id);
8e2fac05 SG	62	}
	63
	64	return 0;
	65	}
	66
09140113	67	static int do_cpu_list(struct cmd_tbl *cmdtp, int flag, int argc,
320eca5c	68	char *const argv[])
8e2fac05 SG	69	{
	70	if (print_cpu_list(false))
	71	return CMD_RET_FAILURE;
	72
	73	return 0;
	74	}
	75
09140113	76	static int do_cpu_detail(struct cmd_tbl *cmdtp, int flag, int argc,
8e2fac05 SG	77	char *const argv[])
	78	{
	79	if (print_cpu_list(true))
	80	return CMD_RET_FAILURE;
	81
	82	return 0;
	83	}
	84
09140113	85	static struct cmd_tbl cmd_cpu_sub[] = {
8e2fac05 SG	86	U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
	87	U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
	88	};
	89
	90	/*
	91	* Process a cpu sub-command
	92	*/
09140113 SG	93	static int do_cpu(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	94	char *const argv[])
8e2fac05	95	{
09140113	96	struct cmd_tbl *c = NULL;
8e2fac05 SG	97
	98	/* Strip off leading 'cpu' command argument */
	99	argc--;
	100	argv++;
	101
	102	if (argc)
320eca5c ÁFR	103	c = find_cmd_tbl(argv[0], cmd_cpu_sub,
320eca5c ÁFR	104	ARRAY_SIZE(cmd_cpu_sub));
8e2fac05 SG	105
	106	if (c)
	107	return c->cmd(cmdtp, flag, argc, argv);
	108	else
	109	return CMD_RET_USAGE;
	110	}
	111
	112	U_BOOT_CMD(
	113	cpu, 2, 1, do_cpu,
	114	"display information about CPUs",
	115	"list - list available CPUs\n"
	116	"cpu detail - show CPU detail"
	117	);