1 files changed, 47 insertions, 0 deletions
diff --git a/mkshbootimg.py b/mkshbootimg.py
new file mode 100755
index 0000000..dcc8294
--- /dev/null
+++ b/mkshbootimg.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+import sys, os
+
+def copydata(outfile, infile):
+    while 1:
+        data = infile.read(512)
+        if (data):
+            outfile.write(data)
+        else:
+            break
+
+def alignoffset(outfile):
+    offset = outfile.tell()
+    outfile.seek((offset + 511) & ~511)
+    return outfile.tell()
+
+def appendimage(outfile, infile):
+    offset = alignoffset(outfile)
+    copydata(outfile, infile)
+    length = alignoffset(outfile) - offset
+    assert (offset % 512 == 0)
+    assert (length % 512 == 0)
+    return (offset/512, length/512)
+
+if len(sys.argv) < 4:
+    print "Usage:", sys.argv[0], "output kernel boot [recovery]"
+    sys.exit(1)
+
+outfile = open(sys.argv[1], 'wb')
+kernel = open(sys.argv[2], 'r')
+boot = open(sys.argv[3], 'r')
+recovery = None
+if (len(sys.argv) == 5):
+    recovery = open(sys.argv[4], 'r')
+offset_table = "\n\nBOOT_IMAGE_OFFSETS\n"
+copydata(outfile, kernel)
+table_loc = alignoffset(outfile)
+outfile.write('\x00' * 512)
+offset_table += "boot_offset=%d;boot_len=%d;" % appendimage(outfile, boot)
+if recovery:
+    offset_table += "recovery_offset=%d;recovery_len=%d;" % appendimage(outfile, recovery)
+offset_table += "\n\n"
+outfile.seek(table_loc)
+outfile.write(offset_table)
+outfile.flush()
+os.fsync(outfile.fileno())
+outfile.close()