1 files changed, 90 insertions, 0 deletions
diff --git a/lib/libnvram/nvram.h b/lib/libnvram/nvram.h
new file mode 100644
index 0000000..d15b85e
--- /dev/null
+++ b/lib/libnvram/nvram.h
@@ -0,0 +1,90 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef __NVRAM_H
+#define __NVRAM_H 1
+
+/* data structures */
+
+typedef struct {
+	unsigned long addr;
+	long len;
+} partition_t;
+
+/* macros */
+
+#define DEBUG(x...)
+// #define DEBUG(x...) printf(x);
+
+#ifndef ALIGN
+#define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))
+#endif
+
+#define NULL ((void *)0)
+
+#define PARTITION_HEADER_SIZE 16
+
+/* FIXME this should be done complete and in a more prominent place */
+#define	__LITTLE_ENDIAN	1234
+#define	__BIG_ENDIAN	4321
+#ifdef __i386__
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#else
+#define __BYTE_ORDER __BIG_ENDIAN
+#endif
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define cpu_to_be64(x)  (x)
+#define be64_to_cpu(x)  (x)
+#define cpu_to_be32(x)  (x)
+#define be32_to_cpu(x)  (x)
+#else
+#include <byteswap.h>
+#define cpu_to_be64(x)  bswap_64(x)
+#define be64_to_cpu(x)  bswap_64(x)
+#define cpu_to_be32(x)  bswap_32(x)
+#define be32_to_cpu(x)  bswap_32(x)
+#endif
+
+/* exported functions */
+
+#define nvram_access_proto(type,name)			\
+	type nvram_read_##name(unsigned int offset);		\
+	void nvram_write_##name(unsigned int offset, type data);
+
+nvram_access_proto(uint8_t,  byte)
+nvram_access_proto(uint16_t, word)
+nvram_access_proto(uint32_t, dword)
+nvram_access_proto(uint64_t, qword)
+
+/* nvram.c */
+
+char *get_nvram_buffer(int len);
+void free_nvram_buffer(char *buffer);
+int nvramlog_printf(const char* fmt, ...);
+partition_t get_partition(unsigned int type, char *name);
+void erase_nvram(int offset, int len);
+int wipe_partition(partition_t partition, int header_only);
+partition_t new_nvram_partition(int type, char *name, int len);
+int increase_nvram_partition_size(partition_t partition, int newsize);
+int clear_nvram_partition(partition_t part);
+int delete_nvram_partition(partition_t part);
+void reset_nvram(void);
+void wipe_nvram(void);
+void nvram_debug(void);
+
+/* envvar.c */
+char *get_env(partition_t part, char *envvar);
+int add_env(partition_t part, char *envvar, char *value);
+int del_env(partition_t part, char *envvar);
+int set_env(partition_t part, char *envvar, char *value);
+
+#endif