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6f192ddcbd
For SMBIOS tables we need to know the CPU family as well as CPU IDs. This patches allocates some space for them in the cpu device and populates it on x86. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __CPU_H
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#define __CPU_H
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/**
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* struct cpu_platdata - platform data for a CPU
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*
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* This can be accessed with dev_get_parent_platdata() for any UCLASS_CPU
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* device.
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*
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* @cpu_id: Platform-specific way of identifying the CPU.
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* @ucode_version: Microcode version, if CPU_FEAT_UCODE is set
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*/
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struct cpu_platdata {
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int cpu_id;
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int ucode_version;
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ulong device_id;
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u16 family; /* DMTF CPU Family */
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u32 id[2]; /* DMTF CPU Processor IDs */
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};
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/* CPU features - mostly just a placeholder for now */
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enum {
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CPU_FEAT_L1_CACHE = 0, /* Supports level 1 cache */
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CPU_FEAT_MMU = 1, /* Supports virtual memory */
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CPU_FEAT_UCODE = 2, /* Requires/uses microcode */
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CPU_FEAT_DEVICE_ID = 3, /* Provides a device ID */
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CPU_FEAT_COUNT,
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};
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/**
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* struct cpu_info - Information about a CPU
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*
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* @cpu_freq: Current CPU frequency in Hz
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* @features: Flags for supported CPU features
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*/
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struct cpu_info {
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ulong cpu_freq;
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ulong features;
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};
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struct cpu_ops {
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/**
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* get_desc() - Get a description string for a CPU
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*
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* @dev: Device to check (UCLASS_CPU)
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* @buf: Buffer to place string
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* @size: Size of string space
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* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int (*get_desc)(struct udevice *dev, char *buf, int size);
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/**
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* get_info() - Get information about a CPU
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*
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* @dev: Device to check (UCLASS_CPU)
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* @info: Returns CPU info
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* @return 0 if OK, -ve on error
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*/
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int (*get_info)(struct udevice *dev, struct cpu_info *info);
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/**
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* get_count() - Get number of CPUs
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*
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* @dev: Device to check (UCLASS_CPU)
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* @return CPU count if OK, -ve on error
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*/
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int (*get_count)(struct udevice *dev);
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};
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#define cpu_get_ops(dev) ((struct cpu_ops *)(dev)->driver->ops)
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/**
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* cpu_get_desc() - Get a description string for a CPU
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*
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* @dev: Device to check (UCLASS_CPU)
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* @buf: Buffer to place string
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* @size: Size of string space
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* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int cpu_get_desc(struct udevice *dev, char *buf, int size);
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/**
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* cpu_get_info() - Get information about a CPU
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*
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* @dev: Device to check (UCLASS_CPU)
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* @info: Returns CPU info
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* @return 0 if OK, -ve on error
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*/
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int cpu_get_info(struct udevice *dev, struct cpu_info *info);
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/**
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* cpu_get_count() - Get number of CPUs
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*
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* @dev: Device to check (UCLASS_CPU)
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* @return CPU count if OK, -ve on error
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*/
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int cpu_get_count(struct udevice *dev);
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#endif
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