X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fenv.h;h=d5e2bcb530f03f23c8cae862dc44fca530117d5e;hb=49c8ef0e45a91ec894ef15e7d043dafe8f1c5efd;hp=a74a261337e640024f1a6ebac5eb4d9014a37d2b;hpb=88c7a0a8c2ce6b503ff5d5509effb2a9f844993e;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/env.h b/include/env.h
index a74a261..d5e2bcb 100644
--- a/include/env.h
+++ b/include/env.h
@@ -9,6 +9,7 @@
 #ifndef __ENV_H
 #define __ENV_H
 
+#include <compiler.h>
 #include <stdbool.h>
 #include <linux/types.h>
 
@@ -112,6 +113,16 @@ int env_match(unsigned char *name, int index);
  */
 char *env_get(const char *varname);
 
+/*
+ * Like env_get, but prints an error if envvar isn't defined in the
+ * environment.  It always returns what env_get does, so it can be used in
+ * place of env_get without changing error handling otherwise.
+ *
+ * @varname:	Variable to look up
+ * @return value of variable, or NULL if not found
+ */
+char *from_env(const char *envvar);
+
 /**
  * env_get_f() - Look up the value of an environment variable (early)
  *
@@ -255,6 +266,13 @@ int env_set_default_vars(int nvars, char *const vars[], int flags);
 int env_load(void);
 
 /**
+ * env_reload() - Re-Load the environment from current storage
+ *
+ * @return 0 if OK, -ve on error
+ */
+int env_reload(void);
+
+/**
  * env_save() - Save the environment to storage
  *
  * @return 0 if OK, -ve on error
@@ -269,6 +287,13 @@ int env_save(void);
 int env_erase(void);
 
 /**
+ * env_select() - Select the environment storage
+ *
+ * @return 0 if OK, -ve on error
+ */
+int env_select(const char *name);
+
+/**
  * env_import() - Import from a binary representation into hash table
  *
  * This imports the environment from a buffer. The format for each variable is
@@ -277,10 +302,11 @@ int env_erase(void);
  * @buf: Buffer containing the environment (struct environemnt_s *)
  * @check: non-zero to check the CRC at the start of the environment, 0 to
  *	ignore it
+ * @flags: Flags controlling matching (H_... - see search.h)
  * @return 0 if imported successfully, -ENOMSG if the CRC was bad, -EIO if
  *	something else went wrong
  */
-int env_import(const char *buf, int check);
+int env_import(const char *buf, int check, int flags);
 
 /**
  * env_export() - Export the environment to a buffer
@@ -293,16 +319,34 @@ int env_import(const char *buf, int check);
 int env_export(struct environment_s *env_out);
 
 /**
+ * env_check_redund() - check the two redundant environments
+ *   and find out, which is the valid one.
+ *
+ * @buf1: First environment (struct environemnt_s *)
+ * @buf1_read_fail: 0 if buf1 is valid, non-zero if invalid
+ * @buf2: Second environment (struct environemnt_s *)
+ * @buf2_read_fail: 0 if buf2 is valid, non-zero if invalid
+ * @return 0 if OK,
+ *	-EIO if no environment is valid,
+ *	-ENOMSG if the CRC was bad
+ */
+
+int env_check_redund(const char *buf1, int buf1_read_fail,
+		     const char *buf2, int buf2_read_fail);
+
+/**
  * env_import_redund() - Select and import one of two redundant environments
  *
  * @buf1: First environment (struct environemnt_s *)
  * @buf1_read_fail: 0 if buf1 is valid, non-zero if invalid
  * @buf2: Second environment (struct environemnt_s *)
  * @buf2_read_fail: 0 if buf2 is valid, non-zero if invalid
+ * @flags: Flags controlling matching (H_... - see search.h)
  * @return 0 if OK, -EIO if no environment is valid, -ENOMSG if the CRC was bad
  */
 int env_import_redund(const char *buf1, int buf1_read_fail,
-		      const char *buf2, int buf2_read_fail);
+		      const char *buf2, int buf2_read_fail,
+		      int flags);
 
 /**
  * env_get_default() - Look up a variable from the default environment
@@ -332,4 +376,18 @@ int env_get_char(int index);
  */
 void env_reloc(void);
 
+
+/**
+ * env_import_fdt() - Import environment values from device tree blob
+ *
+ * This uses the value of the environment variable "env_fdt_path" as a
+ * path to an fdt node, whose property/value pairs are added to the
+ * environment.
+ */
+#ifdef CONFIG_ENV_IMPORT_FDT
+void env_import_fdt(void);
+#else
+static inline void env_import_fdt(void) {}
+#endif
+
 #endif