diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/rockchip/LICENSE | 25 | ||||
| -rwxr-xr-x | util/rockchip/make_idb.py | 124 |
2 files changed, 149 insertions, 0 deletions
diff --git a/util/rockchip/LICENSE b/util/rockchip/LICENSE new file mode 100644 index 0000000000..cb4d35b256 --- /dev/null +++ b/util/rockchip/LICENSE @@ -0,0 +1,25 @@ +// 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. diff --git a/util/rockchip/make_idb.py b/util/rockchip/make_idb.py new file mode 100755 index 0000000000..e95f5c2fd7 --- /dev/null +++ b/util/rockchip/make_idb.py @@ -0,0 +1,124 @@ +#!/usr/bin/env python +# Copyright (c) 2014 Google Inc. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +import struct +import sys +from io import SEEK_SET, SEEK_END + +class IDBTool: + def __init__(self): + print "Initialize IDBTool" + + def p_rc4(self, buf, length): + key = (124,78,3,4,85,5,9,7,45,44,123,56,23,13,23,17) + K = key * 16 + S = [i for i in range(256)] + + j = 0 + for i in range(256): + j = (j + S[i] + K[i]) % 256 + temp = S[i]; S[i] = S[j]; S[j] = temp; + + i = j = k = 0 + for x in range(length): + i = (i+1) % 256 + j = (j + S[i]) % 256 + temp = S[i]; S[i] = S[j]; S[j] = temp + k = (S[i] + S[j]) % 256 + buf[x] = struct.pack('B', ord(buf[x]) ^ S[k]) + + def makeIDB(self, from_file, to_file, rc4_flag = False, align_flag = False): + try: + fin = open(from_file, 'rb') + except: + sys.exit("Failed to open file : " + from_file) + + try: + fin.seek(0, SEEK_END) + if (fin.tell() > 4 * 1024 * 1024): + sys.exit("Input file is more than 4MB") + fin.seek(0) + data = fin.read() + finally: + fin.close() + + data_len = len(data) + SECTOR_SIZE = 512 + PAGE_ALIGN = 4 + sectors = (data_len + 4 - 1) / SECTOR_SIZE + 1 + pages = (sectors - 1) / PAGE_ALIGN + 1 + sectors = pages * PAGE_ALIGN; + + buf = [B'\0'] * sectors * SECTOR_SIZE + buf[:4] = "RK32" + buf[4 : 4+data_len] = data + + idblock = [B'\0'] * 4 * SECTOR_SIZE + blank = [B'\0'] * 4 * SECTOR_SIZE + idblock[:4] = ['\x55', '\xAA', '\xF0', '\x0F'] + + if (not rc4_flag): + idblock[8:12] = struct.pack("<I", 1) + else: + for i in range(sectors): + list_tmp = buf[SECTOR_SIZE*i : SECTOR_SIZE*(i+1)] + self.p_rc4(list_tmp, SECTOR_SIZE) + buf[SECTOR_SIZE*i : SECTOR_SIZE*(i+1)] = list_tmp + + idblock[12:16] = struct.pack("<HH", 4, 4); + idblock[506:510] = struct.pack("<HH", sectors, sectors); + self.p_rc4(idblock, SECTOR_SIZE) + + try: + fout = open(to_file, "wb+") + except: + sys.exit("Failed to open output file : " + to_file) + + try: + if (align_flag): + fout.write(''.join(idblock)) + fout.write(''.join(blank)) + + for s in xrange(0, sectors * SECTOR_SIZE, PAGE_ALIGN * SECTOR_SIZE): + fout.write(''.join(buf[s : s + PAGE_ALIGN * SECTOR_SIZE])) + fout.write(''.join(blank)) + else: + fout.write(''.join(idblock)) + fout.write(''.join(buf)) + fout.flush() + except: + sys.exit("Failed to write data to : " + to_file) + finally: + fout.close() + print "DONE" + +def usage(): + print "Usage: make_idb.py [--enable-rc4] [--enable-align] [--to=out] --from=in" + +if __name__ == '__main__': + rc4_flag = align_flag = False + to_file = "IDBlock.bin" + + for para in sys.argv[1:]: + if (para == "--enable-rc4"): + rc4_flag = True + elif (para == "--enable-align"): + align_flag = True + elif (para.startswith("--to=")): + to_file = para.split('=')[1] + elif (para.startswith("--from=")): + from_file = para.split('=')[1] + elif (para == "--help" or para == "-h"): + usage() + sys.exit() + else: + usage() + sys.exit() + if ('from_file' not in vars() or to_file == ''): + usage() + sys.exit() + + idbtool = IDBTool() + idbtool.makeIDB(from_file, to_file, rc4_flag, align_flag) |