[people/ms/u-boot.git] / cmd / cpu.c

/*
 * Copyright (c) 2015 Google, Inc
 * Written by Simon Glass <sjg@chromium.org>
 * Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#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_platdata *plat = dev_get_parent_platdata(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->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(cmd_tbl_t *cmdtp, int flag, int argc,
		       char *const argv[])
{
	if (print_cpu_list(false))
		return CMD_RET_FAILURE;

	return 0;
}

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

	return 0;
}

static cmd_tbl_t 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(cmd_tbl_t *cmdtp, int flag, int argc,
		  char * const argv[])
{
	cmd_tbl_t *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
8e2fac05 SG	1	/*
	2	* Copyright (c) 2015 Google, Inc
	3	* Written by Simon Glass <sjg@chromium.org>
320eca5c	4	* Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
8e2fac05 SG	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
	9	#include <common.h>
	10	#include <command.h>
	11	#include <cpu.h>
	12	#include <dm.h>
166c3984	13	#include <errno.h>
8e2fac05 SG	14
	15	static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
	16	"L1 cache",
	17	"MMU",
740d5d34	18	"Microcode",
22c2c179	19	"Device ID",
8e2fac05 SG	20	};
	21
	22	static int print_cpu_list(bool detail)
	23	{
	24	struct udevice *dev;
8e2fac05	25	char buf[100];
8e2fac05	26
320eca5c ÁFR	27	for (uclass_first_device(UCLASS_CPU, &dev);
	28	dev;
	29	uclass_next_device(&dev)) {
8e2fac05 SG	30	struct cpu_platdata *plat = dev_get_parent_platdata(dev);
8e2fac05 SG	31	struct cpu_info info;
320eca5c ÁFR	32	bool first = true;
320eca5c ÁFR	33	int ret, i;
8e2fac05 SG	34
	35	ret = cpu_get_desc(dev, buf, sizeof(buf));
	36	printf("%3d: %-10s %s\n", dev->seq, dev->name,
	37	ret ? "<no description>" : buf);
	38	if (!detail)
	39	continue;
	40	ret = cpu_get_info(dev, &info);
	41	if (ret) {
	42	printf("\t(no detail available");
	43	if (ret != -ENOSYS)
320eca5c	44	printf(": err=%d", ret);
8e2fac05 SG	45	printf(")\n");
	46	continue;
	47	}
	48	printf("\tID = %d, freq = ", plat->cpu_id);
	49	print_freq(info.cpu_freq, "");
8e2fac05 SG	50	for (i = 0; i < CPU_FEAT_COUNT; i++) {
	51	if (info.features & (1 << i)) {
	52	printf("%s%s", first ? ": " : ", ",
	53	cpu_feature_name[i]);
	54	first = false;
	55	}
	56	}
	57	printf("\n");
320eca5c	58	if (info.features & (1 << CPU_FEAT_UCODE))
740d5d34 SG	59	printf("\tMicrocode version %#x\n",
740d5d34 SG	60	plat->ucode_version);
740d5d34 SG	61	if (info.features & (1 << CPU_FEAT_DEVICE_ID))
740d5d34 SG	62	printf("\tDevice ID %#lx\n", plat->device_id);
8e2fac05 SG	63	}
	64
	65	return 0;
	66	}
	67
320eca5c ÁFR	68	static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc,
320eca5c ÁFR	69	char *const argv[])
8e2fac05 SG	70	{
	71	if (print_cpu_list(false))
	72	return CMD_RET_FAILURE;
	73
	74	return 0;
	75	}
	76
	77	static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc,
	78	char *const argv[])
	79	{
	80	if (print_cpu_list(true))
	81	return CMD_RET_FAILURE;
	82
	83	return 0;
	84	}
	85
	86	static cmd_tbl_t cmd_cpu_sub[] = {
	87	U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
	88	U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
	89	};
	90
	91	/*
	92	* Process a cpu sub-command
	93	*/
	94	static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc,
320eca5c	95	char * const argv[])
8e2fac05 SG	96	{
	97	cmd_tbl_t *c = NULL;
	98
	99	/* Strip off leading 'cpu' command argument */
	100	argc--;
	101	argv++;
	102
	103	if (argc)
320eca5c ÁFR	104	c = find_cmd_tbl(argv[0], cmd_cpu_sub,
320eca5c ÁFR	105	ARRAY_SIZE(cmd_cpu_sub));
8e2fac05 SG	106
	107	if (c)
	108	return c->cmd(cmdtp, flag, argc, argv);
	109	else
	110	return CMD_RET_USAGE;
	111	}
	112
	113	U_BOOT_CMD(
	114	cpu, 2, 1, do_cpu,
	115	"display information about CPUs",
	116	"list - list available CPUs\n"
	117	"cpu detail - show CPU detail"
	118	);