401d1c4f5d
Move this out of the common header and include it only where needed. In a number of cases this requires adding "struct udevice;" to avoid adding another large header or in other cases replacing / adding missing header files that had been pulled in, very indirectly. Finally, we have a few cases where we did not need to include <asm/global_data.h> at all, so remove that include. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#ifndef __CPU_H
|
|
#define __CPU_H
|
|
|
|
struct udevice;
|
|
|
|
/**
|
|
* struct cpu_plat - platform data for a CPU
|
|
* @cpu_id: Platform-specific way of identifying the CPU.
|
|
* @ucode_version: Microcode version, if CPU_FEAT_UCODE is set
|
|
* @device_id: Driver-defined device identifier
|
|
* @family: DMTF CPU Family identifier
|
|
* @id: DMTF CPU Processor identifier
|
|
* @timebase_freq: the current frequency at which the cpu timer timebase
|
|
* registers are updated (in Hz)
|
|
*
|
|
* This can be accessed with dev_get_parent_plat() for any UCLASS_CPU
|
|
* device.
|
|
*/
|
|
struct cpu_plat {
|
|
int cpu_id;
|
|
int ucode_version;
|
|
ulong device_id;
|
|
u16 family;
|
|
u32 id[2];
|
|
u32 timebase_freq;
|
|
};
|
|
|
|
/* CPU features - mostly just a placeholder for now */
|
|
enum {
|
|
CPU_FEAT_L1_CACHE = 0, /* Supports level 1 cache */
|
|
CPU_FEAT_MMU = 1, /* Supports virtual memory */
|
|
CPU_FEAT_UCODE = 2, /* Requires/uses microcode */
|
|
CPU_FEAT_DEVICE_ID = 3, /* Provides a device ID */
|
|
|
|
CPU_FEAT_COUNT,
|
|
};
|
|
|
|
/**
|
|
* struct cpu_info - Information about a CPU
|
|
*
|
|
* @cpu_freq: Current CPU frequency in Hz
|
|
* @features: Flags for supported CPU features
|
|
* @address_width: Width of the CPU address space in bits (e.g. 32)
|
|
*/
|
|
struct cpu_info {
|
|
ulong cpu_freq;
|
|
ulong features;
|
|
uint address_width;
|
|
};
|
|
|
|
struct cpu_ops {
|
|
/**
|
|
* get_desc() - Get a description string for a CPU
|
|
*
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @buf: Buffer to place string
|
|
* @size: Size of string space
|
|
* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
|
|
*/
|
|
int (*get_desc)(const struct udevice *dev, char *buf, int size);
|
|
|
|
/**
|
|
* get_info() - Get information about a CPU
|
|
*
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @info: Returns CPU info
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int (*get_info)(const struct udevice *dev, struct cpu_info *info);
|
|
|
|
/**
|
|
* get_count() - Get number of CPUs
|
|
*
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @return CPU count if OK, -ve on error
|
|
*/
|
|
int (*get_count)(const struct udevice *dev);
|
|
|
|
/**
|
|
* get_vendor() - Get vendor name of a CPU
|
|
*
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @buf: Buffer to place string
|
|
* @size: Size of string space
|
|
* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
|
|
*/
|
|
int (*get_vendor)(const struct udevice *dev, char *buf, int size);
|
|
|
|
/**
|
|
* is_current() - Check if the CPU that U-Boot is currently running from
|
|
*
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @return 1 if the CPU that U-Boot is currently running from, 0
|
|
* if not.
|
|
*/
|
|
int (*is_current)(struct udevice *dev);
|
|
};
|
|
|
|
#define cpu_get_ops(dev) ((struct cpu_ops *)(dev)->driver->ops)
|
|
|
|
/**
|
|
* cpu_get_desc() - Get a description string for a CPU
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @buf: Buffer to place string
|
|
* @size: Size of string space
|
|
*
|
|
* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
|
|
*/
|
|
int cpu_get_desc(const struct udevice *dev, char *buf, int size);
|
|
|
|
/**
|
|
* cpu_get_info() - Get information about a CPU
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @info: Returns CPU info
|
|
*
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int cpu_get_info(const struct udevice *dev, struct cpu_info *info);
|
|
|
|
/**
|
|
* cpu_get_count() - Get number of CPUs
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
*
|
|
* Return: CPU count if OK, -ve on error
|
|
*/
|
|
int cpu_get_count(const struct udevice *dev);
|
|
|
|
/**
|
|
* cpu_get_vendor() - Get vendor name of a CPU
|
|
* @dev: Device to check (UCLASS_CPU)
|
|
* @buf: Buffer to place string
|
|
* @size: Size of string space
|
|
*
|
|
* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
|
|
*/
|
|
int cpu_get_vendor(const struct udevice *dev, char *buf, int size);
|
|
|
|
/**
|
|
* cpu_probe_all() - Probe all available CPUs
|
|
*
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int cpu_probe_all(void);
|
|
|
|
/**
|
|
* cpu_is_current() - Check if the CPU that U-Boot is currently running from
|
|
*
|
|
* Return: 1 if yes, - 0 if not
|
|
*/
|
|
int cpu_is_current(struct udevice *cpu);
|
|
|
|
/**
|
|
* cpu_get_current_dev() - Get CPU udevice for current CPU
|
|
*
|
|
* Return: udevice if OK, - NULL on error
|
|
*/
|
|
struct udevice *cpu_get_current_dev(void);
|
|
|
|
#endif
|