add ota algorithm for device
1. effective "Differential Upgrade" patch algorithm with high compression rate 2. effective recovery algorithm support recovery firmware in blocks which has low memory consumption and wear-leveling strategies, especially suitable for embeded devices with low RAM. 3. add sample ota bootloader project, see: board\TencentOS_tiny_EVB_MX_Plus\KEIL\ota\ota_bootloader_recovery 4. add sample application project for download firmware through http, see: board\TencentOS_tiny_EVB_MX_Plus\KEIL\ota\ota_application_download_through_http 5. add sample application project for download firmware through qcloud explorer console, see: board\TencentOS_tiny_EVB_MX_Plus\KEIL\ota\ota_application_download_through_qcloud_iot_explorer 6. an OTA markdown document is pending
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components/ota/common/lzma/3rdparty/XzCrc64Opt.c
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components/ota/common/lzma/3rdparty/XzCrc64Opt.c
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/* XzCrc64Opt.c -- CRC64 calculation
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2017-06-30 : Igor Pavlov : Public domain */
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#include "Precomp.h"
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#include "CpuArch.h"
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#ifndef MY_CPU_BE
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#define CRC64_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
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UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, const UInt64 *table)
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{
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const Byte *p = (const Byte *)data;
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for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++)
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v = CRC64_UPDATE_BYTE_2(v, *p);
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for (; size >= 4; size -= 4, p += 4)
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{
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UInt32 d = (UInt32)v ^ *(const UInt32 *)p;
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v = (v >> 32)
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^ (table + 0x300)[((d ) & 0xFF)]
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^ (table + 0x200)[((d >> 8) & 0xFF)]
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^ (table + 0x100)[((d >> 16) & 0xFF)]
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^ (table + 0x000)[((d >> 24))];
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}
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for (; size > 0; size--, p++)
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v = CRC64_UPDATE_BYTE_2(v, *p);
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return v;
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}
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#endif
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#ifndef MY_CPU_LE
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#define CRC_UINT64_SWAP(v) \
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((v >> 56) \
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| ((v >> 40) & ((UInt64)0xFF << 8)) \
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| ((v >> 24) & ((UInt64)0xFF << 16)) \
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| ((v >> 8) & ((UInt64)0xFF << 24)) \
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| ((v << 8) & ((UInt64)0xFF << 32)) \
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| ((v << 24) & ((UInt64)0xFF << 40)) \
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| ((v << 40) & ((UInt64)0xFF << 48)) \
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| ((v << 56)))
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#define CRC64_UPDATE_BYTE_2_BE(crc, b) (table[(Byte)((crc) >> 56) ^ (b)] ^ ((crc) << 8))
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UInt64 MY_FAST_CALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size, const UInt64 *table)
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{
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const Byte *p = (const Byte *)data;
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table += 0x100;
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v = CRC_UINT64_SWAP(v);
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for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++)
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v = CRC64_UPDATE_BYTE_2_BE(v, *p);
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for (; size >= 4; size -= 4, p += 4)
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{
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UInt32 d = (UInt32)(v >> 32) ^ *(const UInt32 *)p;
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v = (v << 32)
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^ (table + 0x000)[((d ) & 0xFF)]
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^ (table + 0x100)[((d >> 8) & 0xFF)]
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^ (table + 0x200)[((d >> 16) & 0xFF)]
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^ (table + 0x300)[((d >> 24))];
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}
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for (; size > 0; size--, p++)
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v = CRC64_UPDATE_BYTE_2_BE(v, *p);
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return CRC_UINT64_SWAP(v);
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}
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#endif
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