[SLOF] sloffs: tool to read and write SLOF images

[Adrian Reber]

This brings the sloffs code to read, copy and append files to an existing
boot_rom.bin from my repository at https://lisas.de/~adrian/slof/slof.git/ .

This code was written in 2008 and all patches have been cherry-picked
without modifications. Only the last patch (13/13) updates the code
to work with today's compilers.

I was able to test that the code still does what it is supposed to do:

$ ./sloffs -l ../boot_rom.bin 
   Offset      File Name                Size                Flags
   ===================================================================
   0x00000000  header                   0000136 (0x000088)  0x00000000
   0x000000d8  stage1                   0049832 (0x00c2a8)  0x00000001
   0x0000c3b0  xvect                    0016128 (0x003f00)  0x00000000

$ ./sloffs ../boot_rom.bin -a sloffs -o new.bin

$ ./sloffs -d new.bin
  Magic       : magic123
  Platform    : qemu0
  Version     : adrian
  Build Date  : 2016-06-15 09:15
  Modify Date : 2016-06-15 10:16
  Image Length: 906216 (0xdd3e8) bytes
  Revision    : 1
  Header CRC  : 0x0000000060a8d884 CRC check: [OK]
  Image CRC   : 0x00000000fbacd40d CRC check: [OK]
  Files       : 50

Adrian Reber (13):
      tools: added initial version of sloffs
      tools: remove unused parts from the Makefile
      tools: added sloffs to Makefile
      tools: fixed compiler warnings
      tools: describe the options in the help printout
      tools: added function to dump header
      romfs: factored out crc code, to make it usable from other locations
      tools: use crc checking code from romfs/tools
      tools: added file append functionality
      tools: added support to sloffs to read from /dev/slof_flash
      tools: removed a cpu_to_be64() in CRC calculation
      tools: add copy functionality
      sloffs: fix compiler warnings

 romfs/tools/Makefile     |   2 +-
 romfs/tools/crclib.c     | 260 +++++++++++++++
 romfs/tools/crclib.h     |  23 ++
 romfs/tools/create_crc.c | 263 +--------------
 tools/.gitignore         |   1 +
 tools/Makefile           |  21 +-
 tools/sloffs.c           | 740 +++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 1039 insertions(+), 271 deletions(-)