1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <cpu.h>
9*4882a593Smuzhiyun #include <dm.h>
10*4882a593Smuzhiyun #include <errno.h>
11*4882a593Smuzhiyun #include <asm/cpu.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
14*4882a593Smuzhiyun
cpu_x86_bind(struct udevice * dev)15*4882a593Smuzhiyun int cpu_x86_bind(struct udevice *dev)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun struct cpu_platdata *plat = dev_get_parent_platdata(dev);
18*4882a593Smuzhiyun struct cpuid_result res;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun plat->cpu_id = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
21*4882a593Smuzhiyun "intel,apic-id", -1);
22*4882a593Smuzhiyun plat->family = gd->arch.x86;
23*4882a593Smuzhiyun res = cpuid(1);
24*4882a593Smuzhiyun plat->id[0] = res.eax;
25*4882a593Smuzhiyun plat->id[1] = res.edx;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun return 0;
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
cpu_x86_get_vendor(struct udevice * dev,char * buf,int size)30*4882a593Smuzhiyun int cpu_x86_get_vendor(struct udevice *dev, char *buf, int size)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun const char *vendor = cpu_vendor_name(gd->arch.x86_vendor);
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun if (size < (strlen(vendor) + 1))
35*4882a593Smuzhiyun return -ENOSPC;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun strcpy(buf, vendor);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun return 0;
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
cpu_x86_get_desc(struct udevice * dev,char * buf,int size)42*4882a593Smuzhiyun int cpu_x86_get_desc(struct udevice *dev, char *buf, int size)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun char *ptr;
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun if (size < CPU_MAX_NAME_LEN)
47*4882a593Smuzhiyun return -ENOSPC;
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun ptr = cpu_get_name(buf);
50*4882a593Smuzhiyun if (ptr != buf)
51*4882a593Smuzhiyun strcpy(buf, ptr);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun return 0;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
cpu_x86_get_count(struct udevice * dev)56*4882a593Smuzhiyun static int cpu_x86_get_count(struct udevice *dev)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun int node, cpu;
59*4882a593Smuzhiyun int num = 0;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun node = fdt_path_offset(gd->fdt_blob, "/cpus");
62*4882a593Smuzhiyun if (node < 0)
63*4882a593Smuzhiyun return -ENOENT;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun for (cpu = fdt_first_subnode(gd->fdt_blob, node);
66*4882a593Smuzhiyun cpu >= 0;
67*4882a593Smuzhiyun cpu = fdt_next_subnode(gd->fdt_blob, cpu)) {
68*4882a593Smuzhiyun const char *device_type;
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun device_type = fdt_getprop(gd->fdt_blob, cpu,
71*4882a593Smuzhiyun "device_type", NULL);
72*4882a593Smuzhiyun if (!device_type)
73*4882a593Smuzhiyun continue;
74*4882a593Smuzhiyun if (strcmp(device_type, "cpu") == 0)
75*4882a593Smuzhiyun num++;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun return num;
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun static const struct cpu_ops cpu_x86_ops = {
82*4882a593Smuzhiyun .get_desc = cpu_x86_get_desc,
83*4882a593Smuzhiyun .get_count = cpu_x86_get_count,
84*4882a593Smuzhiyun .get_vendor = cpu_x86_get_vendor,
85*4882a593Smuzhiyun };
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun static const struct udevice_id cpu_x86_ids[] = {
88*4882a593Smuzhiyun { .compatible = "cpu-x86" },
89*4882a593Smuzhiyun { }
90*4882a593Smuzhiyun };
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun U_BOOT_DRIVER(cpu_x86_drv) = {
93*4882a593Smuzhiyun .name = "cpu_x86",
94*4882a593Smuzhiyun .id = UCLASS_CPU,
95*4882a593Smuzhiyun .of_match = cpu_x86_ids,
96*4882a593Smuzhiyun .bind = cpu_x86_bind,
97*4882a593Smuzhiyun .ops = &cpu_x86_ops,
98*4882a593Smuzhiyun };
99