1 files changed, 47 insertions, 0 deletions
diff --git a/host/lib/include/fmap.h b/host/lib/include/fmap.h
new file mode 100644
index 00000000..7da2dd90
--- /dev/null
+++ b/host/lib/include/fmap.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef __FMAP_H__
+#define __FMAP_H__
+
+#include <inttypes.h>
+#include <stddef.h>
+
+/* FMAP structs. See http://code.google.com/p/flashmap/wiki/FmapSpec */
+#define FMAP_NAMELEN 32
+#define FMAP_SIGNATURE "__FMAP__"
+#define FMAP_SIGNATURE_SIZE 8
+#define FMAP_SEARCH_STRIDE 4
+typedef struct _FmapHeader {
+  char        fmap_signature[FMAP_SIGNATURE_SIZE]; /* avoiding endian issues */
+  uint8_t     fmap_ver_major;
+  uint8_t     fmap_ver_minor;
+  uint64_t    fmap_base;
+  uint32_t    fmap_size;
+  char        fmap_name[FMAP_NAMELEN];
+  uint16_t    fmap_nareas;
+} __attribute__((packed)) FmapHeader;
+
+typedef struct _FmapAreaHeader {
+  uint32_t area_offset;
+  uint32_t area_size;
+  char     area_name[FMAP_NAMELEN];
+  uint16_t area_flags;
+} __attribute__((packed)) FmapAreaHeader;
+
+
+/* Scan firmware image, pointed by [ptr] with length [size], for fmap header.
+ * Return pointer to fmap header, or NULL if not found.
+ */
+const char* FmapFind(const char *ptr, size_t size);
+
+/* Look up fmap area by name, that is, strcmp(fh->fmap_name, name) == 0.
+ * Return index of fmap area, that is, ah[returned_index],
+ * or -1 if not found. */
+int FmapAreaIndex(const FmapHeader* fh, const FmapAreaHeader* ah,
+		const char* name);
+
+#endif  /* __FMAP_H__ */