2 * Copyright (c) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
12 * struct cpu_platdata - platform data for a CPU
14 * This can be accessed with dev_get_parent_platdata() for any UCLASS_CPU
17 * @cpu_id: Platform-specific way of identifying the CPU.
18 * @ucode_version: Microcode version, if CPU_FEAT_UCODE is set
24 u16 family; /* DMTF CPU Family */
25 u32 id[2]; /* DMTF CPU Processor IDs */
28 /* CPU features - mostly just a placeholder for now */
30 CPU_FEAT_L1_CACHE = 0, /* Supports level 1 cache */
31 CPU_FEAT_MMU = 1, /* Supports virtual memory */
32 CPU_FEAT_UCODE = 2, /* Requires/uses microcode */
33 CPU_FEAT_DEVICE_ID = 3, /* Provides a device ID */
39 * struct cpu_info - Information about a CPU
41 * @cpu_freq: Current CPU frequency in Hz
42 * @features: Flags for supported CPU features
51 * get_desc() - Get a description string for a CPU
53 * @dev: Device to check (UCLASS_CPU)
54 * @buf: Buffer to place string
55 * @size: Size of string space
56 * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
58 int (*get_desc)(struct udevice *dev, char *buf, int size);
61 * get_info() - Get information about a CPU
63 * @dev: Device to check (UCLASS_CPU)
64 * @info: Returns CPU info
65 * @return 0 if OK, -ve on error
67 int (*get_info)(struct udevice *dev, struct cpu_info *info);
70 * get_count() - Get number of CPUs
72 * @dev: Device to check (UCLASS_CPU)
73 * @return CPU count if OK, -ve on error
75 int (*get_count)(struct udevice *dev);
78 * get_vendor() - Get vendor name of a CPU
80 * @dev: Device to check (UCLASS_CPU)
81 * @buf: Buffer to place string
82 * @size: Size of string space
83 * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
85 int (*get_vendor)(struct udevice *dev, char *buf, int size);
88 #define cpu_get_ops(dev) ((struct cpu_ops *)(dev)->driver->ops)
91 * cpu_get_desc() - Get a description string for a CPU
93 * @dev: Device to check (UCLASS_CPU)
94 * @buf: Buffer to place string
95 * @size: Size of string space
96 * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
98 int cpu_get_desc(struct udevice *dev, char *buf, int size);
101 * cpu_get_info() - Get information about a CPU
103 * @dev: Device to check (UCLASS_CPU)
104 * @info: Returns CPU info
105 * @return 0 if OK, -ve on error
107 int cpu_get_info(struct udevice *dev, struct cpu_info *info);
110 * cpu_get_count() - Get number of CPUs
112 * @dev: Device to check (UCLASS_CPU)
113 * @return CPU count if OK, -ve on error
115 int cpu_get_count(struct udevice *dev);
118 * cpu_get_vendor() - Get vendor name of a CPU
120 * @dev: Device to check (UCLASS_CPU)
121 * @buf: Buffer to place string
122 * @size: Size of string space
123 * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
125 int cpu_get_vendor(struct udevice *dev, char *buf, int size);