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GDB serial memory dump errors


Hello,

I am connecting to a board that has redboot on it (no
sources available from vendor) via a serial port and I
want to dump the memory image to a binary file.

GDB is able to connect but I get errors and it is
unable to get an accurate dump.

I do not have any familiarity with the GDB protocol
and any pointers would help.

Thanks
Nirmal
--------------------------------------------------
^^^-- No errors upto here
Sending packet: $m3fa8,a8#64...Ack
Packet received:
000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000018000000a0c10000a0c20000a0c30000a0c40000a0c500
00a0c60000a0c70000a0c80000a0c90000a0ca0000a0cb0000a0cc0000a0cd0000a0ce0000a0cf00
00a0c00010a0c10010a0c20010a0c3001
Sending packet: $m4050,a8#fb...Ack
Bad checksum, sentsum=0x73, csum=0x87,
buf=0a0c40010a0c50010a0c60010a0c70010a0c8
0010a0c90010a0ca0010a0cb0010a0cc0010a0cd0010a0ce0010a0cf0010a0c00020a0c10020a0c2
0020a0c30020a0c40020a0c50020a0c60020a0c70020a0k80020a0c90020a0ca0020a0cb0020a0cc
0020a0cd0020a0ke0020a0cf0020a0c00030a0c10030a0c20030a0c30030a0c40030a0c50030a0c6
0030a0c70430a0c80030a0c90030a0ca0030a0cb0030a0cc0030a0cd003
Packet received:
0a0c40010a0c50010a0c60010a0c70010a0c80010a0c90010a0ca0010a0cb00
10a0cc0010a0cd0010a0ce0010a0cf0010a0c00020a0c10020a0c20020a0c30020a0c40020a0c500
20a0c60020a0c70020a0c80020a0c90020a0ca0020a0cb0020a0cc0020a0cd0020a0ce0020a0cf00
20a0c00030a0c10030a0c20030a0c30030a0c40030a0c50030a0c60030a0c70030a0c80030a0c900
30a0ca0030a0cb0030a0cc0030a0cd003


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