+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __CPU_H
/**
* struct cpu_platdata - 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_platdata() for any UCLASS_CPU
* device.
- *
- * @cpu_id: Platform-specific way of identifying the CPU.
*/
struct cpu_platdata {
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,
};
* @return 0 if OK, -ve on error
*/
int (*get_info)(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)(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)(struct udevice *dev, char *buf, int size);
};
#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
+ *
+ * Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
*/
int cpu_get_desc(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
+ *
+ * Return: 0 if OK, -ve on error
*/
int cpu_get_info(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(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(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);
+
#endif