Initial commit

scripts/cfe-wfi-tag.py

@@ -0,0 +1,149 @@
+#!/usr/bin/env python3
+
+"""
+Whole Flash Image Tag
+
+{
+	u32 crc32;
+	u32 version;
+	u32 chipID;
+	u32 flashType;
+	u32 flags;
+}
+
+CRC32: Ethernet (Poly 0x04C11DB7)
+
+Version:
+	0x00005700: Any version
+	0x00005731: NAND 1MB data partition
+	0x00005732: Normal version
+
+Chip ID:
+	Broadcom Chip ID
+	0x00006328: BCM6328
+	0x00006362: BCM6362
+	0x00006368: BCM6368
+	0x00063268: BCM63268
+
+Flash Type:
+	1: NOR
+	2: NAND 16k blocks
+	3: NAND 128k blocks
+	4: NAND 256k blocks
+	5: NAND 512k blocks
+	6: NAND 1MB blocks
+	7: NAND 2MB blocks
+
+Flags:
+	0x00000001: PMC
+	0x00000002: Secure BootROM
+
+"""
+
+import argparse
+import os
+import struct
+import binascii
+
+
+def auto_int(x):
+    return int(x, 0)
+
+
+def create_tag(args, in_bytes):
+    # JAM CRC32 is bitwise not and unsigned
+    crc = ~binascii.crc32(in_bytes) & 0xFFFFFFFF
+    tag = struct.pack(
+        ">IIIII",
+        crc,
+        args.tag_version,
+        args.chip_id,
+        args.flash_type,
+        args.flags,
+    )
+    return tag
+
+
+def create_output(args):
+    in_st = os.stat(args.input_file)
+    in_size = in_st.st_size
+
+    in_f = open(args.input_file, "r+b")
+    in_bytes = in_f.read(in_size)
+    in_f.close()
+
+    tag = create_tag(args, in_bytes)
+
+    out_f = open(args.output_file, "w+b")
+    out_f.write(in_bytes)
+    out_f.write(tag)
+    out_f.close()
+
+
+def main():
+    global args
+
+    parser = argparse.ArgumentParser(description="")
+
+    parser.add_argument(
+        "--input-file",
+        dest="input_file",
+        action="store",
+        type=str,
+        help="Input file",
+    )
+
+    parser.add_argument(
+        "--output-file",
+        dest="output_file",
+        action="store",
+        type=str,
+        help="Output file",
+    )
+
+    parser.add_argument(
+        "--version",
+        dest="tag_version",
+        action="store",
+        type=auto_int,
+        help="WFI Tag Version",
+    )
+
+    parser.add_argument(
+        "--chip-id",
+        dest="chip_id",
+        action="store",
+        type=auto_int,
+        help="WFI Chip ID",
+    )
+
+    parser.add_argument(
+        "--flash-type",
+        dest="flash_type",
+        action="store",
+        type=auto_int,
+        help="WFI Flash Type",
+    )
+
+    parser.add_argument(
+        "--flags", dest="flags", action="store", type=auto_int, help="WFI Flags"
+    )
+
+    args = parser.parse_args()
+
+    if not args.flags:
+        args.flags = 0
+
+    if (
+        (not args.input_file)
+        or (not args.output_file)
+        or (not args.tag_version)
+        or (not args.chip_id)
+        or (not args.flash_type)
+    ):
+        parser.print_help()
+    else:
+        create_output(args)
+
+
+main()