| /* |
| * Copyright 2013, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| */ |
| |
| #ifndef FLASHMAP_LIB_FDTMAP_H__ |
| #define FLASHMAP_LIB_FDTMAP_H__ |
| |
| #define FDTMAP_SIGNATURE "__FDTM__" |
| |
| struct romlayout; |
| |
| /* The header at the start of an fdtmap */ |
| struct fdtmap_hdr { |
| char sig[8]; /* Signature (FDTMAP_SIGNATURE) */ |
| uint32_t size; /* Size of data region */ |
| uint32_t crc32; /* CRC32 of data region */ |
| /* Data follows immediately */ |
| }; |
| |
| /** |
| * fdtmap_add_entries_from_buf()- Add region entries from the FDTMAP |
| * |
| * @blob: FDT blob containing flashmap node |
| * @rom_entries: Place to put the entries we find |
| * @max_entries: Maximum number of entries to add |
| * @return Number of entries added, or -1 on error |
| */ |
| int fdtmap_add_entries_from_buf(const void *blob, |
| struct romlayout *rom_entries, int max_entries); |
| |
| /* |
| * fdtmap_find - find FDTMAP at offset in an image and copy it to buffer |
| * |
| * @handle: opaque pointer to be used by the callback function |
| * @read_chunk: callback function which given 'handle', 'offset' and 'size' |
| * will read into the provided memory space 'dest' 'size' bytes |
| * starting from 'offset'. Returns zero on success and non-zero |
| * on failure. |
| * @hdr: pointer to fmap header |
| * @offset: offset of fmap header in image |
| * @buf: unallocated buffer to store fmap struct |
| * |
| * This function allocates memory which the caller must free. |
| * |
| * returns 1 if found, 0 if not found, <0 to indicate failure |
| */ |
| int fdtmap_find(void *source_handle, |
| int (*read_chunk)(void *handle, |
| void *dest, |
| size_t offset, |
| size_t size), |
| struct fdtmap_hdr *hdr, |
| loff_t offset, uint8_t **buf); |
| |
| #endif |
