1 files changed, 177 insertions, 0 deletions
diff --git a/u-boot/include/environment.h b/u-boot/include/environment.h
new file mode 100644
index 0000000..53d92df
--- /dev/null
+++ b/u-boot/include/environment.h
@@ -0,0 +1,177 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _ENVIRONMENT_H_
+#define _ENVIRONMENT_H_	1
+
+/**************************************************************************
+ *
+ * The "environment" is stored as a list of '\0' terminated
+ * "name=value" strings. The end of the list is marked by a double
+ * '\0'. New entries are always added at the end. Deleting an entry
+ * shifts the remaining entries to the front. Replacing an entry is a
+ * combination of deleting the old value and adding the new one.
+ *
+ * The environment is preceeded by a 32 bit CRC over the data part.
+ *
+ **************************************************************************
+ */
+
+#if defined(CONFIG_ENV_IS_IN_FLASH)
+# ifndef  CONFIG_ENV_ADDR
+#  define CONFIG_ENV_ADDR	(CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
+# endif
+# ifndef  CONFIG_ENV_OFFSET
+#  define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
+# endif
+# if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
+#  define CONFIG_ENV_ADDR_REDUND	(CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
+# endif
+# if defined(CONFIG_ENV_SECT_SIZE) || defined(CONFIG_ENV_SIZE)
+#  ifndef  CONFIG_ENV_SECT_SIZE
+#   define CONFIG_ENV_SECT_SIZE	CONFIG_ENV_SIZE
+#  endif
+#  ifndef  CONFIG_ENV_SIZE
+#   define CONFIG_ENV_SIZE	CONFIG_ENV_SECT_SIZE
+#  endif
+# else
+#  error "Both CONFIG_ENV_SECT_SIZE and CONFIG_ENV_SIZE undefined"
+# endif
+# if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
+#  define CONFIG_ENV_SIZE_REDUND	CONFIG_ENV_SIZE
+# endif
+# if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
+     (CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)
+#  define ENV_IS_EMBEDDED	1
+# endif
+# if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
+#  define CONFIG_SYS_REDUNDAND_ENVIRONMENT	1
+# endif
+# ifdef CONFIG_ENV_IS_EMBEDDED
+#  error "do not define CONFIG_ENV_IS_EMBEDDED in your board config"
+#  error "it is calculated automatically for you"
+# endif
+#endif	/* CONFIG_ENV_IS_IN_FLASH */
+
+#if defined(CONFIG_ENV_IS_IN_NAND)
+# if defined(CONFIG_ENV_OFFSET_OOB)
+#  ifdef CONFIG_ENV_OFFSET_REDUND
+#   error "CONFIG_ENV_OFFSET_REDUND is not supported when CONFIG_ENV_OFFSET_OOB"
+#   error "is set"
+#  endif
+extern unsigned long nand_env_oob_offset;
+#  define CONFIG_ENV_OFFSET nand_env_oob_offset
+# else
+#  ifndef CONFIG_ENV_OFFSET
+#   error "Need to define CONFIG_ENV_OFFSET when using CONFIG_ENV_IS_IN_NAND"
+#  endif
+#  ifdef CONFIG_ENV_OFFSET_REDUND
+#   define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+#  endif
+# endif /* CONFIG_ENV_OFFSET_OOB */
+# ifndef CONFIG_ENV_SIZE
+#  error "Need to define CONFIG_ENV_SIZE when using CONFIG_ENV_IS_IN_NAND"
+# endif
+#endif /* CONFIG_ENV_IS_IN_NAND */
+
+#if defined(CONFIG_ENV_IS_IN_MG_DISK)
+# ifndef CONFIG_ENV_ADDR
+#  error "Need to define CONFIG_ENV_ADDR when using CONFIG_ENV_IS_IN_MG_DISK"
+# endif
+# ifndef CONFIG_ENV_SIZE
+#  error "Need to define CONFIG_ENV_SIZE when using CONFIG_ENV_IS_IN_MG_DISK"
+# endif
+#endif /* CONFIG_ENV_IS_IN_MG_DISK */
+
+/* Embedded env is only supported for some flash types */
+#ifdef CONFIG_ENV_IS_EMBEDDED
+# if !defined(CONFIG_ENV_IS_IN_FLASH) && \
+     !defined(CONFIG_ENV_IS_IN_NAND) && \
+     !defined(CONFIG_ENV_IS_IN_ONENAND) && \
+     !defined(CONFIG_ENV_IS_IN_SPI_FLASH)
+#  error "CONFIG_ENV_IS_EMBEDDED not supported for your flash type"
+# endif
+#endif
+
+/*
+ * For the flash types where embedded env is supported, but it cannot be
+ * calculated automatically (i.e. NAND), take the board opt-in.
+ */
+#if defined(CONFIG_ENV_IS_EMBEDDED) && !defined(ENV_IS_EMBEDDED)
+# define ENV_IS_EMBEDDED 1
+#endif
+
+/* The build system likes to know if the env is embedded */
+#ifdef DO_DEPS_ONLY
+# ifdef ENV_IS_EMBEDDED
+#  define CONFIG_ENV_IS_EMBEDDED
+# endif
+#endif
+
+#include "compiler.h"
+
+#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
+# define ENV_HEADER_SIZE	(sizeof(uint32_t) + 1)
+
+# define ACTIVE_FLAG   1
+# define OBSOLETE_FLAG 0
+#else
+# define ENV_HEADER_SIZE	(sizeof(uint32_t))
+#endif
+
+
+#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
+
+typedef	struct environment_s {
+	uint32_t	crc;		/* CRC32 over data bytes	*/
+#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
+	unsigned char	flags;		/* active/obsolete flags	*/
+#endif
+	unsigned char	data[ENV_SIZE]; /* Environment data		*/
+} env_t;
+
+#ifndef DO_DEPS_ONLY
+
+#include <search.h>
+
+extern struct hsearch_data env_htab;
+
+/* Function that returns a character from the environment */
+unsigned char env_get_char (int);
+
+/* Function that returns a pointer to a value from the environment */
+unsigned char *env_get_addr(int);
+unsigned char env_get_char_memory (int index);
+
+/* Function that updates CRC of the enironment */
+void env_crc_update (void);
+
+/* [re]set to the default environment */
+void set_default_env(const char *s);
+
+/* Import from binary representation into hash table */
+int env_import(const char *buf, int check);
+
+#endif
+
+#endif	/* _ENVIRONMENT_H_ */