X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fcpu.h;h=be02a1671298950867c4366ec4bd4a98027c3fd2;hb=c56289ddafce3d1ec442fb18064f136c2c47d0bb;hp=367c5f46a00f8499f93027653946c15bc75c4033;hpb=9dc8d155d4e88563f572ee79aab758eb4272f3fd;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/cpu.h b/include/cpu.h
index 367c5f4..be02a16 100644
--- a/include/cpu.h
+++ b/include/cpu.h
@@ -7,23 +7,28 @@
 #ifndef __CPU_H
 #define __CPU_H
 
+struct udevice;
+
 /**
- * struct cpu_platdata - platform data for a CPU
+ * 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_platdata() for any UCLASS_CPU
+ * This can be accessed with dev_get_parent_plat() for any UCLASS_CPU
  * device.
  */
-struct cpu_platdata {
+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 */
@@ -41,10 +46,12 @@ enum {
  *
  * @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 {
@@ -56,7 +63,7 @@ struct cpu_ops {
 	 * @size:	Size of string space
 	 * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
 	 */
-	int (*get_desc)(struct udevice *dev, char *buf, int size);
+	int (*get_desc)(const struct udevice *dev, char *buf, int size);
 
 	/**
 	 * get_info() - Get information about a CPU
@@ -65,7 +72,7 @@ struct cpu_ops {
 	 * @info:	Returns CPU info
 	 * @return 0 if OK, -ve on error
 	 */
-	int (*get_info)(struct udevice *dev, struct cpu_info *info);
+	int (*get_info)(const struct udevice *dev, struct cpu_info *info);
 
 	/**
 	 * get_count() - Get number of CPUs
@@ -73,7 +80,7 @@ struct cpu_ops {
 	 * @dev:	Device to check (UCLASS_CPU)
 	 * @return CPU count if OK, -ve on error
 	 */
-	int (*get_count)(struct udevice *dev);
+	int (*get_count)(const struct udevice *dev);
 
 	/**
 	 * get_vendor() - Get vendor name of a CPU
@@ -83,7 +90,16 @@ struct cpu_ops {
 	 * @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);
+	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)
@@ -96,7 +112,7 @@ struct cpu_ops {
  *
  * 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);
+int cpu_get_desc(const struct udevice *dev, char *buf, int size);
 
 /**
  * cpu_get_info() - Get information about a CPU
@@ -105,7 +121,7 @@ int cpu_get_desc(struct udevice *dev, char *buf, int size);
  *
  * Return: 0 if OK, -ve on error
  */
-int cpu_get_info(struct udevice *dev, struct cpu_info *info);
+int cpu_get_info(const struct udevice *dev, struct cpu_info *info);
 
 /**
  * cpu_get_count() - Get number of CPUs
@@ -113,7 +129,7 @@ int cpu_get_info(struct udevice *dev, struct cpu_info *info);
  *
  * Return: CPU count if OK, -ve on error
  */
-int cpu_get_count(struct udevice *dev);
+int cpu_get_count(const struct udevice *dev);
 
 /**
  * cpu_get_vendor() - Get vendor name of a CPU
@@ -123,7 +139,7 @@ int cpu_get_count(struct udevice *dev);
  *
  * 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);
+int cpu_get_vendor(const struct udevice *dev, char *buf, int size);
 
 /**
  * cpu_probe_all() - Probe all available CPUs
@@ -132,4 +148,18 @@ int cpu_get_vendor(struct udevice *dev, char *buf, int size);
  */
 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