board: Add stm32h7 SoC, discovery and evaluation boards support

[people/ms/u-boot.git] / include / environment.h

diff --git a/include/environment.h b/include/environment.h
index 7eaba72181e3d694df3879298740b18f28bbbbe9..03b41e0c51160d295b17f4764abfb4cb6dff312e 100644 (file)
--- a/include/environment.h
+++ b/include/environment.h
@@ -143,10 +143,6 @@ extern unsigned long nand_env_oob_offset;
 # define ENV_HEADER_SIZE       (sizeof(uint32_t))
 #endif
 
-#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
-extern char *env_name_spec;
-#endif
-
 #ifdef CONFIG_ENV_AES
 /* Make sure the payload is multiple of AES block size */
 #define ENV_SIZE ((CONFIG_ENV_SIZE - ENV_HEADER_SIZE) & ~(16 - 1))
@@ -174,9 +170,6 @@ extern env_t environment;
 extern const unsigned char default_environment[];
 extern env_t *env_ptr;
 
-extern void env_relocate_spec(void);
-extern unsigned char env_get_char_spec(int);
-
 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 extern void env_reloc(void);
 #endif
@@ -224,6 +217,7 @@ enum env_location {
 };
 
 struct env_driver {
+       const char *name;
        enum env_location location;
 
        /**
@@ -233,17 +227,19 @@ struct env_driver {
         * will read from gd->env_addr.
         *
         * @index: Index of character to read (0=first)
-        * @return character read
+        * @return character read, or -ve on error
         */
-       unsigned char (*get_char)(int index);
+       int (*get_char)(int index);
 
        /**
         * load() - Load the environment from storage
         *
         * This method is optional. If not provided, no environment will be
         * loaded.
+        *
+        * @return 0 if OK, -ve on error
         */
-       void (*load)(void);
+       int (*load)(void);
 
        /**
         * save() - Save the environment to storage
@@ -269,6 +265,13 @@ struct env_driver {
 #define U_BOOT_ENV_LOCATION(__name)                                    \
        ll_entry_declare(struct env_driver, __name, env_driver)
 
+/* Declare the name of a location */
+#ifdef CONFIG_CMD_SAVEENV
+#define ENV_NAME(_name) .name = _name,
+#else
+#define ENV_NAME(_name)
+#endif
+
 #ifdef CONFIG_CMD_SAVEENV
 #define env_save_ptr(x) x
 #else
@@ -277,14 +280,11 @@ struct env_driver {
 
 extern struct hsearch_data env_htab;
 
-/* Function that returns a character from the environment */
-unsigned char env_get_char(int);
-
 /* Function that updates CRC of the enironment */
 void env_crc_update(void);
 
 /* Look up the variable from the default environment */
-char *getenv_default(const char *name);
+char *env_get_default(const char *name);
 
 /* [re]set to the default environment */
 void set_default_env(const char *s);
@@ -303,6 +303,37 @@ int env_export(env_t *env_out);
 int env_import_redund(const char *buf1, const char *buf2);
 #endif
 
+/**
+ * env_driver_lookup_default() - Look up the default environment driver
+ *
+ * @return pointer to driver, or NULL if none (which should not happen)
+ */
+struct env_driver *env_driver_lookup_default(void);
+
+/**
+ * env_get_char() - Get a character from the early environment
+ *
+ * This reads from the pre-relocation environemnt
+ *
+ * @index: Index of character to read (0 = first)
+ * @return character read, or -ve on error
+ */
+int env_get_char(int index);
+
+/**
+ * env_load() - Load the environment from storage
+ *
+ * @return 0 if OK, -ve on error
+ */
+int env_load(void);
+
+/**
+ * env_save() - Save the environment to storage
+ *
+ * @return 0 if OK, -ve on error
+ */
+int env_save(void);
+
 #endif /* DO_DEPS_ONLY */
 
 #endif /* _ENVIRONMENT_H_ */