--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _ENVIRONMENT_H_
+#define _ENVIRONMENT_H_
+
+/**************************************************************************
+ *
+ * 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
+# endif
+# if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
+# define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+# 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_MMC)
+# ifdef CONFIG_ENV_OFFSET_REDUND
+# define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+# endif
+#endif
+
+#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_UBI)
+# ifndef CONFIG_ENV_UBI_PART
+# error "Need to define CONFIG_ENV_UBI_PART when using CONFIG_ENV_IS_IN_UBI"
+# endif
+# ifndef CONFIG_ENV_UBI_VOLUME
+# error "Need to define CONFIG_ENV_UBI_VOLUME when using CONFIG_ENV_IS_IN_UBI"
+# endif
+# if defined(CONFIG_ENV_UBI_VOLUME_REDUND)
+# define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+# endif
+# ifndef CONFIG_ENV_SIZE
+# error "Need to define CONFIG_ENV_SIZE when using CONFIG_ENV_IS_IN_UBI"
+# endif
+# ifndef CONFIG_CMD_UBI
+# error "Need to define CONFIG_CMD_UBI when using CONFIG_ENV_IS_IN_UBI"
+# endif
+#endif /* CONFIG_ENV_IS_IN_UBI */
+
+/* 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
+#endif
+
+/* The build system likes to know if the env is embedded */
+#ifdef DO_DEPS_ONLY
+# ifdef ENV_IS_EMBEDDED
+# ifndef CONFIG_ENV_IS_EMBEDDED
+# define CONFIG_ENV_IS_EMBEDDED
+# endif
+# 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
+
+#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))
+#else
+#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
+#endif
+
+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
+#ifdef CONFIG_ENV_AES
+/* Make sure the env is aligned to block size. */
+__attribute__((aligned(16)))
+#endif
+;
+
+#ifdef ENV_IS_EMBEDDED
+extern env_t environment;
+#endif /* ENV_IS_EMBEDDED */
+
+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
+
+#ifndef DO_DEPS_ONLY
+
+#include <env_attr.h>
+#include <env_callback.h>
+#include <env_flags.h>
+#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 */
+const 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);
+
+/* Look up the variable from the default environment */
+char *getenv_default(const char *name);
+
+/* [re]set to the default environment */
+void set_default_env(const char *s);
+
+/* [re]set individual variables to their value in the default environment */
+int set_default_vars(int nvars, char * const vars[]);
+
+/* Import from binary representation into hash table */
+int env_import(const char *buf, int check);
+
+/* Export from hash table into binary representation */
+int env_export(env_t *env_out);
+
+#endif /* DO_DEPS_ONLY */
+
+#endif /* _ENVIRONMENT_H_ */
Code Review / kvmfornfv.git / blobdiff