- to prepare for the support of fastboot sparse images

Signed-off-by: Steve Rae <s...@broadcom.com>
---
This file is ASIS from:
  
https://raw.githubusercontent.com/AOSB/android_system_core/master/libsparse/sparse_format.h
  (commit 28fa5bc347390480fe190294c6c385b6a9f0d68b)
except for the __UBOOT__ conditional include.

 include/sparse_format.h | 58 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 include/sparse_format.h

diff --git a/include/sparse_format.h b/include/sparse_format.h
new file mode 100644
index 0000000..21fbd05
--- /dev/null
+++ b/include/sparse_format.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBSPARSE_SPARSE_FORMAT_H_
+#define _LIBSPARSE_SPARSE_FORMAT_H_
+#define __UBOOT__
+#ifndef __UBOOT__
+#include "sparse_defs.h"
+#endif
+
+typedef struct sparse_header {
+  __le32       magic;          /* 0xed26ff3a */
+  __le16       major_version;  /* (0x1) - reject images with higher major 
versions */
+  __le16       minor_version;  /* (0x0) - allow images with higer minor 
versions */
+  __le16       file_hdr_sz;    /* 28 bytes for first revision of the file 
format */
+  __le16       chunk_hdr_sz;   /* 12 bytes for first revision of the file 
format */
+  __le32       blk_sz;         /* block size in bytes, must be a multiple of 4 
(4096) */
+  __le32       total_blks;     /* total blocks in the non-sparse output image 
*/
+  __le32       total_chunks;   /* total chunks in the sparse input image */
+  __le32       image_checksum; /* CRC32 checksum of the original data, 
counting "don't care" */
+                               /* as 0. Standard 802.3 polynomial, use a 
Public Domain */
+                               /* table implementation */
+} sparse_header_t;
+
+#define SPARSE_HEADER_MAGIC    0xed26ff3a
+
+#define CHUNK_TYPE_RAW         0xCAC1
+#define CHUNK_TYPE_FILL                0xCAC2
+#define CHUNK_TYPE_DONT_CARE   0xCAC3
+#define CHUNK_TYPE_CRC32    0xCAC4
+
+typedef struct chunk_header {
+  __le16       chunk_type;     /* 0xCAC1 -> raw; 0xCAC2 -> fill; 0xCAC3 -> 
don't care */
+  __le16       reserved1;
+  __le32       chunk_sz;       /* in blocks in output image */
+  __le32       total_sz;       /* in bytes of chunk input file including chunk 
header and data */
+} chunk_header_t;
+
+/* Following a Raw or Fill or CRC32 chunk is data.
+ *  For a Raw chunk, it's the data in chunk_sz * blk_sz.
+ *  For a Fill chunk, it's 4 bytes of the fill data.
+ *  For a CRC32 chunk, it's 4 bytes of CRC32
+ */
+
+#endif
-- 
1.8.5

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