3 # SPDX-License-Identifier: GPL-2.0+
5 # A script to generate FIT image source for rockchip boards
6 # with ARM Trusted Firmware
7 # and multiple device trees (given on the command line)
9 # usage: $0 <dt_name> [<dt_name> [<dt_name] ...]
16 # pip install pyelftools
17 from elftools.elf.elffile import ELFFile
19 ELF_SEG_P_TYPE = 'p_type'
20 ELF_SEG_P_PADDR = 'p_paddr'
21 ELF_SEG_P_VADDR = 'p_vaddr'
22 ELF_SEG_P_OFFSET = 'p_offset'
23 ELF_SEG_P_FILESZ = 'p_filesz'
24 ELF_SEG_P_MEMSZ = 'p_memsz'
28 * This is a generated file.
33 description = "FIT image for U-Boot with bl31 (TF-A)";
41 description = "U-Boot (64-bit)";
42 data = /incbin/("u-boot-nodtb.bin");
52 DT_IMAGES_NODE_END = """ };
58 def append_bl31_node(file, atf_index, phy_addr, elf_entry):
59 # Append BL31 DT node to input FIT dts file.
60 data = 'bl31_0x%08x.bin' % phy_addr
61 file.write('\t\tatf_%d {\n' % atf_index)
62 file.write('\t\t\tdescription = \"ARM Trusted Firmware\";\n')
63 file.write('\t\t\tdata = /incbin/("%s");\n' % data)
64 file.write('\t\t\ttype = "firmware";\n')
65 file.write('\t\t\tarch = "arm64";\n')
66 file.write('\t\t\tos = "arm-trusted-firmware";\n')
67 file.write('\t\t\tcompression = "none";\n')
68 file.write('\t\t\tload = <0x%08x>;\n' % phy_addr)
70 file.write('\t\t\tentry = <0x%08x>;\n' % elf_entry)
71 file.write('\t\t};\n')
74 def append_fdt_node(file, dtbs):
78 dtname = os.path.basename(dtb)
79 file.write('\t\tfdt_%d {\n' % cnt)
80 file.write('\t\t\tdescription = "%s";\n' % dtname)
81 file.write('\t\t\tdata = /incbin/("%s");\n' % dtb)
82 file.write('\t\t\ttype = "flat_dt";\n')
83 file.write('\t\t\tcompression = "none";\n')
84 file.write('\t\t};\n')
88 def append_conf_section(file, cnt, dtname, segments):
89 file.write('\t\tconfig_%d {\n' % cnt)
90 file.write('\t\t\tdescription = "%s";\n' % dtname)
91 file.write('\t\t\tfirmware = "atf_1";\n')
92 file.write('\t\t\tloadables = "uboot",')
93 for i in range(1, segments):
94 file.write('"atf_%d"' % (i))
95 if i != (segments - 1):
99 file.write('\t\t\tfdt = "fdt_1";\n')
100 file.write('\t\t};\n')
103 def append_conf_node(file, dtbs, segments):
104 # Append configeration nodes.
106 file.write('\tconfigurations {\n')
107 file.write('\t\tdefault = "config_1";\n')
109 dtname = os.path.basename(dtb)
110 append_conf_section(file, cnt, dtname, segments)
115 def generate_atf_fit_dts_uboot(fit_file, uboot_file_name):
118 with open(uboot_file_name, 'rb') as uboot_file:
119 uboot = ELFFile(uboot_file)
120 for i in range(uboot.num_segments()):
121 seg = uboot.get_segment(i)
122 if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
123 p_paddr = seg.__getitem__(ELF_SEG_P_PADDR)
124 num_load_seg = num_load_seg + 1
126 assert (p_paddr != 0xFFFFFFFF and num_load_seg == 1)
128 fit_file.write(DT_UBOOT % p_paddr)
130 def generate_atf_fit_dts_bl31(fit_file, bl31_file_name, dtbs_file_name):
131 with open(bl31_file_name, 'rb') as bl31_file:
132 bl31 = ELFFile(bl31_file)
133 elf_entry = bl31.header['e_entry']
134 segments = bl31.num_segments()
135 for i in range(segments):
136 seg = bl31.get_segment(i)
137 if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
138 paddr = seg.__getitem__(ELF_SEG_P_PADDR)
139 append_bl31_node(fit_file, i + 1, paddr, elf_entry)
140 append_fdt_node(fit_file, dtbs_file_name)
141 fit_file.write(DT_IMAGES_NODE_END)
142 append_conf_node(fit_file, dtbs_file_name, segments)
144 def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_file_name):
145 # Generate FIT script for ATF image.
146 if fit_file_name != sys.stdout:
147 fit_file = open(fit_file_name, "wb")
149 fit_file = sys.stdout
151 fit_file.write(DT_HEADER)
152 generate_atf_fit_dts_uboot(fit_file, uboot_file_name)
153 generate_atf_fit_dts_bl31(fit_file, bl31_file_name, dtbs_file_name)
154 fit_file.write(DT_END)
156 if fit_file_name != sys.stdout:
159 def generate_atf_binary(bl31_file_name):
160 with open(bl31_file_name, 'rb') as bl31_file:
161 bl31 = ELFFile(bl31_file)
163 num = bl31.num_segments()
165 seg = bl31.get_segment(i)
166 if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
167 paddr = seg.__getitem__(ELF_SEG_P_PADDR)
168 file_name = 'bl31_0x%08x.bin' % paddr
169 with open(file_name, "wb") as atf:
170 atf.write(seg.data())
173 uboot_elf = "./u-boot"
174 bl31_elf = "./bl31.elf"
177 opts, args = getopt.getopt(sys.argv[1:], "o:u:b:h")
178 for opt, val in opts:
191 generate_atf_fit_dts(fit_its, bl31_elf, uboot_elf, dtbs)
192 generate_atf_binary(bl31_elf)
194 if __name__ == "__main__":