1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
#!/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()
|
