[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 <display_options.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;
}

#if IS_ENABLED(CONFIG_SYS_LONGHELP)
static char cpu_help_text[] =
	"list	- list available CPUs\n"
	"cpu detail	- show CPU detail"
	;
#endif

U_BOOT_CMD_WITH_SUBCMDS(cpu, "display information about CPUs", cpu_help_text,
	U_BOOT_SUBCMD_MKENT(list, 1, 1, do_cpu_list),
	U_BOOT_SUBCMD_MKENT(detail, 1, 0, do_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>
4e4bf944	11	#include <display_options.h>
8e2fac05	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)) {
8a8d24bd	30	struct cpu_plat *plat = dev_get_parent_plat(dev);
8e2fac05	31	struct cpu_info info;
320eca5c ÁFR	32	bool first = true;
320eca5c ÁFR	33	int ret, i;
8e2fac05 SG	34
8e2fac05 SG	35	ret = cpu_get_desc(dev, buf, sizeof(buf));
8b85dfc6	36	printf("%3d: %-10s %s\n", dev_seq(dev), dev->name,
8e2fac05 SG	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
09140113	68	static int do_cpu_list(struct cmd_tbl *cmdtp, int flag, int argc,
320eca5c	69	char *const argv[])
8e2fac05 SG	70	{
	71	if (print_cpu_list(false))
	72	return CMD_RET_FAILURE;
	73
	74	return 0;
	75	}
	76
09140113	77	static int do_cpu_detail(struct cmd_tbl *cmdtp, int flag, int argc,
8e2fac05 SG	78	char *const argv[])
	79	{
	80	if (print_cpu_list(true))
	81	return CMD_RET_FAILURE;
	82
	83	return 0;
	84	}
	85
5b4d810d	86	#if IS_ENABLED(CONFIG_SYS_LONGHELP)
15c924a7	87	static char cpu_help_text[] =
8e2fac05 SG	88	"list - list available CPUs\n"
8e2fac05 SG	89	"cpu detail - show CPU detail"
15c924a7 OP	90	;
	91	#endif
	92
	93	U_BOOT_CMD_WITH_SUBCMDS(cpu, "display information about CPUs", cpu_help_text,
	94	U_BOOT_SUBCMD_MKENT(list, 1, 1, do_cpu_list),
	95	U_BOOT_SUBCMD_MKENT(detail, 1, 0, do_cpu_detail));