OpenWrt – Rev 4
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From ebded197f9c12168d61973043fd9ebd5d49528a8 Mon Sep 17 00:00:00 2001
From: Yangbo Lu <yangbo.lu@nxp.com>
Date: Mon, 25 Dec 2017 14:11:02 +0800
Subject: [PATCH] rcw: add a python script for byte swapping
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Makefile | 2 ++
byte_swap.py | 32 ++++++++++++++++++++++++++++++++
2 files changed, 34 insertions(+)
create mode 100755 byte_swap.py
diff --git a/Makefile b/Makefile
index fb55c8b..27e3ba2 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,8 @@ all install clean:
@for board in $(BOARDS); do \
$(MAKE) -C $$board $@ DESTDIR=$(DESTDIR)/$$board; \
done
+ chmod 755 ./byte_swap.py; \
+ ./byte_swap.py ls1046ardb/RR_FFSSPPPH_1133_5559/rcw_1800_qspiboot.bin 8
release: $(foreach board,$(BOARDS),rcw-$(board)-$(VER).tar.gz)
diff --git a/byte_swap.py b/byte_swap.py
new file mode 100755
index 0000000..7ee4129
--- /dev/null
+++ b/byte_swap.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+"""
+Swap the 4/8 bytes endian except for PBI CRC
+2016-10-9: Initial version
+
+Usage:
+ ./byte_swap.py <file_name> <byte>
+"""
+import sys
+
+try:
+ file_name = sys.argv[1]
+ byte = int(sys.argv[2])
+except:
+ print("Usage: ./byte_swap.py <file_name> <byte>")
+ print("E.g.: ./byte_swap.py rcw_1600.bin 8\n")
+ exit
+
+with open(file_name,'rb') as file:
+ tmp = file.read()
+file.close()
+
+with open(file_name + '.swap','wb') as file:
+ for i in range(0, len(tmp) - 1, byte):
+ if(tmp[i:i+4].encode('hex')) == "08610040":
+ #print("PBI CRC command")
+ file.write(tmp[i:i+8])
+ break
+ file.write(tmp[i:i+byte][::-1])
+file.close()
+
+print("Swapped file: " + file_name + '.swap')
--
2.7.4
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