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https://github.com/optim-enterprises-bv/openwrt-qualcomm.git
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0642a2166b
CRC32 is available in a standard library. It seems reasonable to defer to that rather than run a custom implementation. Signed-off-by: Doug Kerr <dek3rr@gmail.com>
129 lines
2.2 KiB
Python
Executable File
129 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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Whole Flash Image Tag
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{
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u32 crc32;
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u32 version;
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u32 chipID;
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u32 flashType;
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u32 flags;
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}
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CRC32: Ethernet (Poly 0x04C11DB7)
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Version:
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0x00005700: Any version
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0x00005731: NAND 1MB data partition
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0x00005732: Normal version
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Chip ID:
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Broadcom Chip ID
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0x00006328: BCM6328
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0x00006362: BCM6362
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0x00006368: BCM6368
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0x00063268: BCM63268
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Flash Type:
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1: NOR
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2: NAND 16k blocks
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3: NAND 128k blocks
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4: NAND 256k blocks
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5: NAND 512k blocks
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6: NAND 1MB blocks
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7: NAND 2MB blocks
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Flags:
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0x00000001: PMC
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0x00000002: Secure BootROM
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"""
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import argparse
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import os
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import struct
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import binascii
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def auto_int(x):
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return int(x, 0)
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def create_tag(args, in_bytes):
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# JAM CRC32 is bitwise not and unsigned
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crc = (~binascii.crc32(in_bytes) & 0xFFFFFFFF)
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tag = struct.pack('>IIIII', crc, args.tag_version, args.chip_id, args.flash_type, args.flags)
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return tag
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def create_output(args):
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in_st = os.stat(args.input_file)
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in_size = in_st.st_size
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in_f = open(args.input_file, 'r+b')
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in_bytes = in_f.read(in_size)
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in_f.close()
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tag = create_tag(args, in_bytes)
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out_f = open(args.output_file, 'w+b')
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out_f.write(in_bytes)
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out_f.write(tag)
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out_f.close()
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def main():
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global args
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parser = argparse.ArgumentParser(description='')
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parser.add_argument('--input-file',
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dest='input_file',
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action='store',
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type=str,
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help='Input file')
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parser.add_argument('--output-file',
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dest='output_file',
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action='store',
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type=str,
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help='Output file')
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parser.add_argument('--version',
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dest='tag_version',
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action='store',
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type=auto_int,
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help='WFI Tag Version')
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parser.add_argument('--chip-id',
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dest='chip_id',
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action='store',
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type=auto_int,
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help='WFI Chip ID')
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parser.add_argument('--flash-type',
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dest='flash_type',
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action='store',
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type=auto_int,
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help='WFI Flash Type')
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parser.add_argument('--flags',
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dest='flags',
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action='store',
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type=auto_int,
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help='WFI Flags')
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args = parser.parse_args()
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if not args.flags:
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args.flags = 0
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if ((not args.input_file) or
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(not args.output_file) or
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(not args.tag_version) or
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(not args.chip_id) or
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(not args.flash_type)):
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parser.print_help()
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else:
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create_output(args)
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main()
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