package/firmware/layerscape/ls-rcw/patches/0001-rcw-add-a-python-script-for-byte-swapping.patch

   1 From ebded197f9c12168d61973043fd9ebd5d49528a8 Mon Sep 17 00:00:00 2001
   2 From: Yangbo Lu <yangbo.lu@nxp.com>
   3 Date: Mon, 25 Dec 2017 14:11:02 +0800
   4 Subject: [PATCH] rcw: add a python script for byte swapping
   5
   6 Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
   7 ---
   8  Makefile     |  2 ++
   9  byte_swap.py | 32 ++++++++++++++++++++++++++++++++
  10  2 files changed, 34 insertions(+)
  11  create mode 100755 byte_swap.py
  12
  13 diff --git a/Makefile b/Makefile
  14 index fb55c8b..27e3ba2 100644
  15 --- a/Makefile
  16 +++ b/Makefile
  17 @@ -11,6 +11,8 @@ all install clean:
  18         @for board in $(BOARDS); do \
  19                 $(MAKE) -C $$board $@ DESTDIR=$(DESTDIR)/$$board; \
  20         done
  21 +       chmod 755 ./byte_swap.py; \
  22 +       ./byte_swap.py ls1046ardb/RR_FFSSPPPH_1133_5559/rcw_1800_qspiboot.bin 8
  23
  24  release: $(foreach board,$(BOARDS),rcw-$(board)-$(VER).tar.gz)
  25
  26 diff --git a/byte_swap.py b/byte_swap.py
  27 new file mode 100755
  28 index 0000000..7ee4129
  29 --- /dev/null
  30 +++ b/byte_swap.py
  31 @@ -0,0 +1,32 @@
  32 +#!/usr/bin/env python
  33 +"""
  34 +Swap the 4/8 bytes endian except for PBI CRC
  35 +2016-10-9: Initial version
  36 +
  37 +Usage:
  38 +       ./byte_swap.py <file_name> <byte>
  39 +"""
  40 +import sys
  41 +
  42 +try:
  43 +    file_name = sys.argv[1]
  44 +    byte = int(sys.argv[2])
  45 +except:
  46 +    print("Usage: ./byte_swap.py <file_name> <byte>")
  47 +    print("E.g.: ./byte_swap.py rcw_1600.bin 8\n")
  48 +    exit
  49 +
  50 +with open(file_name,'rb') as file:
  51 +    tmp = file.read()
  52 +file.close()
  53 +
  54 +with open(file_name + '.swap','wb') as file:
  55 +    for i in range(0, len(tmp) - 1, byte):
  56 +       if(tmp[i:i+4].encode('hex')) == "08610040":
  57 +           #print("PBI CRC command")
  58 +           file.write(tmp[i:i+8])
  59 +           break
  60 +       file.write(tmp[i:i+byte][::-1])
  61 +file.close()
  62 +
  63 +print("Swapped file: " + file_name + '.swap')
  64 --
  65 2.7.4
  66