1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
5 */
6
7 #include <common.h>
8 #include <cpu.h>
9 #include <dm.h>
10 #include <errno.h>
11 #include <dm/lists.h>
12 #include <dm/root.h>
13
cpu_get_desc(struct udevice * dev,char * buf,int size)14 int cpu_get_desc(struct udevice *dev, char *buf, int size)
15 {
16 struct cpu_ops *ops = cpu_get_ops(dev);
17
18 if (!ops->get_desc)
19 return -ENOSYS;
20
21 return ops->get_desc(dev, buf, size);
22 }
23
cpu_get_info(struct udevice * dev,struct cpu_info * info)24 int cpu_get_info(struct udevice *dev, struct cpu_info *info)
25 {
26 struct cpu_ops *ops = cpu_get_ops(dev);
27
28 if (!ops->get_info)
29 return -ENOSYS;
30
31 return ops->get_info(dev, info);
32 }
33
cpu_get_count(struct udevice * dev)34 int cpu_get_count(struct udevice *dev)
35 {
36 struct cpu_ops *ops = cpu_get_ops(dev);
37
38 if (!ops->get_count)
39 return -ENOSYS;
40
41 return ops->get_count(dev);
42 }
43
cpu_get_vendor(struct udevice * dev,char * buf,int size)44 int cpu_get_vendor(struct udevice *dev, char *buf, int size)
45 {
46 struct cpu_ops *ops = cpu_get_ops(dev);
47
48 if (!ops->get_vendor)
49 return -ENOSYS;
50
51 return ops->get_vendor(dev, buf, size);
52 }
53
54 U_BOOT_DRIVER(cpu_bus) = {
55 .name = "cpu_bus",
56 .id = UCLASS_SIMPLE_BUS,
57 .per_child_platdata_auto_alloc_size = sizeof(struct cpu_platdata),
58 };
59
uclass_cpu_init(struct uclass * uc)60 static int uclass_cpu_init(struct uclass *uc)
61 {
62 struct udevice *dev;
63 ofnode node;
64 int ret;
65
66 node = ofnode_path("/cpus");
67 if (!ofnode_valid(node))
68 return 0;
69
70 ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
71 &dev);
72
73 return ret;
74 }
75
76 UCLASS_DRIVER(cpu) = {
77 .id = UCLASS_CPU,
78 .name = "cpu",
79 .flags = DM_UC_FLAG_SEQ_ALIAS,
80 .init = uclass_cpu_init,
81 };
82