本文介绍了一种获取嵌入式设备分区大小的方法，并详细展示了如何创建用于读取特定分区的XML配置文件。此外，还提供了通过特定工具进行分区数据读取的具体步骤。
1. get partition size :
cat /sys/block/mmcblk0/mmcblk0p55/size # sectors
more /proc/partitions # KB
2. create rawdump xml : "rawprogram.xml" :
<?xml version="1.0" ?>
<data>
<!--NOTE: This is an ** Autogenerated file **-->
<!--NOTE: Sector size is 512bytes-->
<program SECTOR_SIZE_IN_BYTES="512" file_sector_offset="0" filename="system.img" label="rawdump"num_partition_sectors="8388608" physical_partition_number="0"size_in_KB="4194304.0"sparse="false"
start_byte_hex="0x34000000" start_sector="1703936"/>
<program SECTOR_SIZE_IN_BYTES="512" file_sector_offset="0" filename="userdata.img" label="rawdump"num_partition_sectors="112050143" physical_partition_number="0"size_in_KB="56025071"sparse="false"start_byte_hex="0x134000000"
start_sector="10092544"/>
</data>
3. read back
adb reboot edl
QSaharaServer.exe -s 13:programmer.mbn -p \\.\COM3
fh_loader.exe --memoryname=emmc --sendxml=rawprogram.xml --convertprogram2read --port=\\.\COM3
Of Course ! you can disable it by deviceprogramer ...
also see : https://github.com/binsys/emmcdl
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