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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#!/usr/bin/env python
"""
# SPDX-License-Identifier: GPL-2.0+
#
# A script to generate FIT image source for rockchip boards
# with ARM Trusted Firmware
# and multiple device trees (given on the command line)
#
# usage: $0 <dt_name> [<dt_name> [<dt_name] ...]
"""
import os
import sys
import getopt
# pip install pyelftools
from elftools.elf.elffile import ELFFile
ELF_SEG_P_TYPE = 'p_type'
ELF_SEG_P_PADDR = 'p_paddr'
ELF_SEG_P_VADDR = 'p_vaddr'
ELF_SEG_P_OFFSET = 'p_offset'
ELF_SEG_P_FILESZ = 'p_filesz'
ELF_SEG_P_MEMSZ = 'p_memsz'
DT_HEADER = """
/*
* This is a generated file.
*/
/dts-v1/;
/ {
description = "FIT image for U-Boot with bl31 (TF-A)";
#address-cells = <1>;
images {
"""
DT_UBOOT = """
uboot {
description = "U-Boot (64-bit)";
data = /incbin/("u-boot-nodtb.bin");
type = "standalone";
os = "U-Boot";
arch = "arm64";
compression = "none";
load = <0x%08x>;
};
"""
DT_IMAGES_NODE_END = """ };
"""
DT_END = "};"
def append_bl31_node(file, atf_index, phy_addr, elf_entry):
# Append BL31 DT node to input FIT dts file.
data = 'bl31_0x%08x.bin' % phy_addr
file.write('\t\tatf_%d {\n' % atf_index)
file.write('\t\t\tdescription = \"ARM Trusted Firmware\";\n')
file.write('\t\t\tdata = /incbin/("%s");\n' % data)
file.write('\t\t\ttype = "firmware";\n')
file.write('\t\t\tarch = "arm64";\n')
file.write('\t\t\tos = "arm-trusted-firmware";\n')
file.write('\t\t\tcompression = "none";\n')
file.write('\t\t\tload = <0x%08x>;\n' % phy_addr)
if atf_index == 1:
file.write('\t\t\tentry = <0x%08x>;\n' % elf_entry)
file.write('\t\t};\n')
file.write('\n')
def append_fdt_node(file, dtbs):
# Append FDT nodes.
cnt = 1
for dtb in dtbs:
dtname = os.path.basename(dtb)
file.write('\t\tfdt_%d {\n' % cnt)
file.write('\t\t\tdescription = "%s";\n' % dtname)
file.write('\t\t\tdata = /incbin/("%s");\n' % dtb)
file.write('\t\t\ttype = "flat_dt";\n')
file.write('\t\t\tcompression = "none";\n')
file.write('\t\t};\n')
file.write('\n')
cnt = cnt + 1
def append_conf_section(file, cnt, dtname, segments):
file.write('\t\tconfig_%d {\n' % cnt)
file.write('\t\t\tdescription = "%s";\n' % dtname)
file.write('\t\t\tfirmware = "atf_1";\n')
file.write('\t\t\tloadables = "uboot",')
for i in range(1, segments):
file.write('"atf_%d"' % (i))
if i != (segments - 1):
file.write(',')
else:
file.write(';\n')
file.write('\t\t\tfdt = "fdt_1";\n')
file.write('\t\t};\n')
file.write('\n')
def append_conf_node(file, dtbs, segments):
# Append configeration nodes.
cnt = 1
file.write('\tconfigurations {\n')
file.write('\t\tdefault = "config_1";\n')
for dtb in dtbs:
dtname = os.path.basename(dtb)
append_conf_section(file, cnt, dtname, segments)
cnt = cnt + 1
file.write('\t};\n')
file.write('\n')
def generate_atf_fit_dts_uboot(fit_file, uboot_file_name):
num_load_seg = 0
p_paddr = 0xFFFFFFFF
with open(uboot_file_name, 'rb') as uboot_file:
uboot = ELFFile(uboot_file)
for i in range(uboot.num_segments()):
seg = uboot.get_segment(i)
if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
p_paddr = seg.__getitem__(ELF_SEG_P_PADDR)
num_load_seg = num_load_seg + 1
assert (p_paddr != 0xFFFFFFFF and num_load_seg == 1)
fit_file.write(DT_UBOOT % p_paddr)
def generate_atf_fit_dts_bl31(fit_file, bl31_file_name, dtbs_file_name):
with open(bl31_file_name, 'rb') as bl31_file:
bl31 = ELFFile(bl31_file)
elf_entry = bl31.header['e_entry']
segments = bl31.num_segments()
for i in range(segments):
seg = bl31.get_segment(i)
if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
paddr = seg.__getitem__(ELF_SEG_P_PADDR)
append_bl31_node(fit_file, i + 1, paddr, elf_entry)
append_fdt_node(fit_file, dtbs_file_name)
fit_file.write(DT_IMAGES_NODE_END)
append_conf_node(fit_file, dtbs_file_name, segments)
def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_file_name):
# Generate FIT script for ATF image.
if fit_file_name != sys.stdout:
fit_file = open(fit_file_name, "wb")
else:
fit_file = sys.stdout
fit_file.write(DT_HEADER)
generate_atf_fit_dts_uboot(fit_file, uboot_file_name)
generate_atf_fit_dts_bl31(fit_file, bl31_file_name, dtbs_file_name)
fit_file.write(DT_END)
if fit_file_name != sys.stdout:
fit_file.close()
def generate_atf_binary(bl31_file_name):
with open(bl31_file_name, 'rb') as bl31_file:
bl31 = ELFFile(bl31_file)
num = bl31.num_segments()
for i in range(num):
seg = bl31.get_segment(i)
if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
paddr = seg.__getitem__(ELF_SEG_P_PADDR)
file_name = 'bl31_0x%08x.bin' % paddr
with open(file_name, "wb") as atf:
atf.write(seg.data())
def main():
uboot_elf = "./u-boot"
bl31_elf = "./bl31.elf"
fit_its = sys.stdout
opts, args = getopt.getopt(sys.argv[1:], "o:u:b:h")
for opt, val in opts:
if opt == "-o":
fit_its = val
elif opt == "-u":
uboot_elf = val
elif opt == "-b":
bl31_elf = val
elif opt == "-h":
print(__doc__)
sys.exit(2)
dtbs = args
generate_atf_fit_dts(fit_its, bl31_elf, uboot_elf, dtbs)
generate_atf_binary(bl31_elf)
if __name__ == "__main__":
main()
|
