lmb: Rename _lmb_alloc_addr() to lmb_alloc_addr_flags()

[J-u-boot.git] / include / cpu.h

diff --git a/include/cpu.h b/include/cpu.h
index 28dd48feb8f0a6c1ce8aceaa2d8d15b8d49c39aa..0018910d61fa4e7f83f3a9403c325b75967ed674 100644 (file)
--- a/include/cpu.h
+++ b/include/cpu.h
@@ -7,8 +7,12 @@
 #ifndef __CPU_H
 #define __CPU_H
 
+#include <linux/types.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
@@ -17,10 +21,10 @@
  * @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;
@@ -44,10 +48,12 @@ 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 {
@@ -59,7 +65,7 @@ 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
@@ -68,7 +74,7 @@ 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
@@ -76,7 +82,7 @@ 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
@@ -86,7 +92,25 @@ 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);
+
+       /**
+        * release_core() - Relase a CPU core to the given address to run application
+        *
+        * @dev:        Device to check (UCLASS_CPU)
+        * @addr:       Address to relese the CPU core
+        * @return 0 if OK, -ve on error
+        */
+       int (*release_core)(const struct udevice *dev, phys_addr_t addr);
 };
 
 #define cpu_get_ops(dev)        ((struct cpu_ops *)(dev)->driver->ops)
@@ -99,7 +123,7 @@ 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
@@ -108,7 +132,7 @@ 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
@@ -116,7 +140,7 @@ 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
@@ -126,7 +150,7 @@ 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
@@ -135,4 +159,24 @@ 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);
+
+/**
+ * cpu_release_core() - Relase a CPU core to the given address to run application
+ *
+ * @return 0 if OK, -ve on error
+ */
+int cpu_release_core(const struct udevice *dev, phys_addr_t addr);
 #endif