[people/ms/u-boot.git] / arch / x86 / cpu / cpu_x86.c

/*
 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <cpu.h>
#include <dm.h>
#include <errno.h>
#include <asm/cpu.h>

DECLARE_GLOBAL_DATA_PTR;

int cpu_x86_bind(struct udevice *dev)
{
	struct cpu_platdata *plat = dev_get_parent_platdata(dev);
	struct cpuid_result res;

	plat->cpu_id = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
				      "intel,apic-id", -1);
	plat->family = gd->arch.x86;
	res = cpuid(1);
	plat->id[0] = res.eax;
	plat->id[1] = res.edx;

	return 0;
}

int cpu_x86_get_vendor(struct udevice *dev, char *buf, int size)
{
	const char *vendor = cpu_vendor_name(gd->arch.x86_vendor);

	if (size < (strlen(vendor) + 1))
		return -ENOSPC;

	strcpy(buf, vendor);

	return 0;
}

int cpu_x86_get_desc(struct udevice *dev, char *buf, int size)
{
	if (size < CPU_MAX_NAME_LEN)
		return -ENOSPC;

	cpu_get_name(buf);

	return 0;
}

static int cpu_x86_get_count(struct udevice *dev)
{
	int node, cpu;
	int num = 0;

	node = fdt_path_offset(gd->fdt_blob, "/cpus");
	if (node < 0)
		return -ENOENT;

	for (cpu = fdt_first_subnode(gd->fdt_blob, node);
	     cpu >= 0;
	     cpu = fdt_next_subnode(gd->fdt_blob, cpu)) {
		const char *device_type;

		device_type = fdt_getprop(gd->fdt_blob, cpu,
					  "device_type", NULL);
		if (!device_type)
			continue;
		if (strcmp(device_type, "cpu") == 0)
			num++;
	}

	return num;
}

static const struct cpu_ops cpu_x86_ops = {
	.get_desc	= cpu_x86_get_desc,
	.get_count	= cpu_x86_get_count,
	.get_vendor	= cpu_x86_get_vendor,
};

static const struct udevice_id cpu_x86_ids[] = {
	{ .compatible = "cpu-x86" },
	{ }
};

U_BOOT_DRIVER(cpu_x86_drv) = {
	.name		= "cpu_x86",
	.id		= UCLASS_CPU,
	.of_match	= cpu_x86_ids,
	.bind		= cpu_x86_bind,
	.ops		= &cpu_x86_ops,
};
Commit	Line	Data
be3f06bc BM	1	/*
	2	* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
	7	#include <common.h>
	8	#include <cpu.h>
	9	#include <dm.h>
	10	#include <errno.h>
	11	#include <asm/cpu.h>
	12
6e6f4ce4 BM	13	DECLARE_GLOBAL_DATA_PTR;
6e6f4ce4 BM	14
be3f06bc BM	15	int cpu_x86_bind(struct udevice *dev)
	16	{
	17	struct cpu_platdata *plat = dev_get_parent_platdata(dev);
6f192ddc	18	struct cpuid_result res;
be3f06bc	19
e160f7d4	20	plat->cpu_id = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
be3f06bc	21	"intel,apic-id", -1);
6f192ddc AG	22	plat->family = gd->arch.x86;
	23	res = cpuid(1);
	24	plat->id[0] = res.eax;
	25	plat->id[1] = res.edx;
be3f06bc BM	26
	27	return 0;
	28	}
	29
94eaa79c AG	30	int cpu_x86_get_vendor(struct udevice dev, char buf, int size)
	31	{
	32	const char *vendor = cpu_vendor_name(gd->arch.x86_vendor);
	33
	34	if (size < (strlen(vendor) + 1))
	35	return -ENOSPC;
	36
	37	strcpy(buf, vendor);
	38
	39	return 0;
	40	}
	41
be3f06bc BM	42	int cpu_x86_get_desc(struct udevice dev, char buf, int size)
	43	{
	44	if (size < CPU_MAX_NAME_LEN)
	45	return -ENOSPC;
	46
	47	cpu_get_name(buf);
	48
	49	return 0;
	50	}
	51
6e6f4ce4 BM	52	static int cpu_x86_get_count(struct udevice *dev)
	53	{
	54	int node, cpu;
	55	int num = 0;
	56
	57	node = fdt_path_offset(gd->fdt_blob, "/cpus");
	58	if (node < 0)
	59	return -ENOENT;
	60
	61	for (cpu = fdt_first_subnode(gd->fdt_blob, node);
	62	cpu >= 0;
	63	cpu = fdt_next_subnode(gd->fdt_blob, cpu)) {
	64	const char *device_type;
	65
	66	device_type = fdt_getprop(gd->fdt_blob, cpu,
	67	"device_type", NULL);
	68	if (!device_type)
	69	continue;
	70	if (strcmp(device_type, "cpu") == 0)
	71	num++;
	72	}
	73
	74	return num;
	75	}
	76
be3f06bc BM	77	static const struct cpu_ops cpu_x86_ops = {
be3f06bc BM	78	.get_desc = cpu_x86_get_desc,
6e6f4ce4	79	.get_count = cpu_x86_get_count,
94eaa79c	80	.get_vendor = cpu_x86_get_vendor,
be3f06bc BM	81	};
	82
	83	static const struct udevice_id cpu_x86_ids[] = {
	84	{ .compatible = "cpu-x86" },
	85	{ }
	86	};
	87
	88	U_BOOT_DRIVER(cpu_x86_drv) = {
	89	.name = "cpu_x86",
	90	.id = UCLASS_CPU,
	91	.of_match = cpu_x86_ids,
	92	.bind = cpu_x86_bind,
	93	.ops = &cpu_x86_ops,
	94	};