add preliminary support for the bifferboard, patch from bifferos

SVN-Revision: 18766

target/linux/rdc/image/mkimg_bifferboard.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+"""
+   Create firmware for 8MB Bifferboards
+   Firmware does not include the config blocks
+   Firmware starts just after config
+"""
+
+import struct, sys
+
+kernel_extent = 0x200000
+config = 0x6000
+
+if __name__ == "__main__":
+
+  if len(sys.argv) != 4:
+    print  "usage: mkimg_bifferboard.py <kernel> <64k JFFS> <output file>"
+    sys.exit(0)
+    
+  bzimage = sys.argv[1]
+  rootfs = sys.argv[2]
+  target = sys.argv[3]
+
+  # Kernel first
+  fw = file(bzimage).read()
+  if len(fw) > (kernel_extent - config):
+    raise IOError("Kernel too large")
+
+  # Pad up to 0x200000
+  while len(fw) < (kernel_extent - config):
+    fw += "\xff"
+
+  fw += file(rootfs).read()
+
+  # Check length of total
+  if len(fw) > (0x800000 - 0x10000 - 0x6000):
+    raise IOError("Rootfs too large")
+
+  file(target,"wb").write(fw)
+  print "Firmware written to '%s'" % target