tree fe758c868f435c8ff9a535f994c96998585ef3f6
parent 7040bce74b817e62fc1dead037371a7b5abef895
author Chirag Sharma <chirshar@in.ibm.com> 1600189261 -0500
committer Chirag Sharma <chirshar@in.ibm.com> 1601384009 -0500

Creating dump header for IBM systems

-Adding dump header script:
-Changes are related to IBM specific systems only, no
impact on the existing dump package format without
dump header. In package function only for IBM systems
the generated header will be added to the dump, for
remaining systems the existing dump format remains same.
-Adding dump header which will be added on top of the
the <obmc file>.tar.xz, only on IBM systems

Note: If user wants to extract the dump, they need to remove
the header from the dump using dd command.
Example
dd bs=628 skip=1 if=<input_dump_file> of=<output_file>

Result:
Tested the dump header using busctl command and dreport script.
Able to add dump header on top of the <obmcdump>.tar.xz file.

Separated out the header from the output file using dd command:
dd bs=628 skip=1 if=<obmc dump>.tar.xz of=openbmc.tar.xz

The new output file doesn't have the header now and can be unzipped.
Post unzipping the files in the dump can be seen.

hexdump ooutput of the dump header:-
00000000  46 49 4c 45 20 20 20 20  00 40 00 00 00 00 00 00  |FILE    .@......|
00000010  00 00 00 00 00 01 00 0f  42 4d 50 44 55 4d 50 2e  |........BMPDUMP.|
00000020  53 49 4d 50 31 30 52 2e  30 30 30 30 30 30 30 36  |SIMP10R.00000006|
00000030  2e 32 30 32 30 30 39 32  39 31 31 31 30 34 33 00  |.20200929111043.|
00000040  53 45 43 54 49 4f 4e 20  00 30 00 00 00 00 00 00  |SECTION .0......|
00000050  00 00 00 01 00 02 00 00  00 00 00 00 00 02 ad dc  |................|
00000060  42 4d 43 44 55 4d 50 00  00 00 00 00 00 00 00 00  |BMCDUMP.........|
00000070  42 4d 43 20 44 55 4d 50  00 00 00 00 00 00 00 00  |BMC DUMP........|
00000080  00 00 00 00 02 10 02 00  00 00 00 00 00 02 ad dc  |................|
00000090  39 31 30 35 2d 32 32 41  00 00 00 00 00 00 00 00  |9105-22A........|
000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000000b0  53 65 72 76 65 72 2d 39  31 30 35 2d 32 32 41 2d  |Server-9105-22A-|
000000c0  53 4e 2d 53 49 4d 50 31  30 52 00 00 00 00 00 00  |SN-SIMP10R......|
000000d0  00 53 49 4d 50 31 30 52  00 00 00 00 00 70 00 00  |.SIMP10R.....p..|
000000e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000270  01 01 00 00 fd 37 7a 58  5a 00 00 04 e6 d6 b4 46  |.....7zXZ......F|

Signed-off-by: Chirag Sharma <chirshar@in.ibm.com>
Change-Id: I27bffdd96a6da0777d88e3c7f93eee92cffbfd6e