| #!/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 |
| import logging |
| import struct |
| |
| 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_tee_node(file, atf_index, phy_addr, elf_entry): |
| # Append TEE DT node to input FIT dts file. |
| data = 'tee_0x%08x.bin' % phy_addr |
| file.write('\t\tatf_%d {\n' % atf_index) |
| file.write('\t\t\tdescription = \"TEE\";\n') |
| file.write('\t\t\tdata = /incbin/("%s");\n' % data) |
| file.write('\t\t\ttype = "tee";\n') |
| file.write('\t\t\tarch = "arm64";\n') |
| file.write('\t\t\tos = "tee";\n') |
| file.write('\t\t\tcompression = "none";\n') |
| file.write('\t\t\tload = <0x%08x>;\n' % phy_addr) |
| 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"') |
| if segments > 1: |
| file.write(',') |
| for i in range(1, segments): |
| file.write('"atf_%d"' % (i + 1)) |
| if i != (segments - 1): |
| file.write(',') |
| else: |
| file.write(';\n') |
| if segments <= 1: |
| 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): |
| segments = unpack_elf(uboot_file_name) |
| if len(segments) != 1: |
| raise ValueError("Invalid u-boot ELF image '%s'" % uboot_file_name) |
| index, entry, p_paddr, data = segments[0] |
| fit_file.write(DT_UBOOT % p_paddr) |
| |
| def generate_atf_fit_dts_bl31(fit_file, bl31_file_name, tee_file_name, dtbs_file_name): |
| segments = unpack_elf(bl31_file_name) |
| for index, entry, paddr, data in segments: |
| append_bl31_node(fit_file, index + 1, paddr, entry) |
| num_segments = len(segments) |
| |
| if tee_file_name: |
| tee_segments = unpack_elf(tee_file_name) |
| for index, entry, paddr, data in tee_segments: |
| append_tee_node(fit_file, num_segments + index + 1, paddr, entry) |
| num_segments = num_segments + len(tee_segments) |
| |
| append_fdt_node(fit_file, dtbs_file_name) |
| fit_file.write(DT_IMAGES_NODE_END) |
| append_conf_node(fit_file, dtbs_file_name, num_segments) |
| |
| def generate_atf_fit_dts(fit_file_name, bl31_file_name, tee_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, tee_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): |
| for index, entry, paddr, data in unpack_elf(bl31_file_name): |
| file_name = 'bl31_0x%08x.bin' % paddr |
| with open(file_name, "wb") as atf: |
| atf.write(data) |
| |
| def generate_tee_binary(tee_file_name): |
| if tee_file_name: |
| for index, entry, paddr, data in unpack_elf(tee_file_name): |
| file_name = 'tee_0x%08x.bin' % paddr |
| with open(file_name, "wb") as atf: |
| atf.write(data) |
| |
| def unpack_elf(filename): |
| with open(filename, 'rb') as file: |
| elf = file.read() |
| if elf[0:7] != b'\x7fELF\x02\x01\x01' or elf[18:20] != b'\xb7\x00': |
| raise ValueError("Invalid arm64 ELF file '%s'" % filename) |
| |
| e_entry, e_phoff = struct.unpack_from('<2Q', elf, 0x18) |
| e_phentsize, e_phnum = struct.unpack_from('<2H', elf, 0x36) |
| segments = [] |
| |
| for index in range(e_phnum): |
| offset = e_phoff + e_phentsize * index |
| p_type, p_flags, p_offset = struct.unpack_from('<LLQ', elf, offset) |
| if p_type == 1: # PT_LOAD |
| p_paddr, p_filesz = struct.unpack_from('<2Q', elf, offset + 0x18) |
| p_data = elf[p_offset:p_offset + p_filesz] |
| segments.append((index, e_entry, p_paddr, p_data)) |
| return segments |
| |
| def main(): |
| uboot_elf = "./u-boot" |
| fit_its = sys.stdout |
| if "BL31" in os.environ: |
| bl31_elf=os.getenv("BL31"); |
| elif os.path.isfile("./bl31.elf"): |
| bl31_elf = "./bl31.elf" |
| else: |
| os.system("echo 'int main(){}' > bl31.c") |
| os.system("${CROSS_COMPILE}gcc -c bl31.c -o bl31.elf") |
| bl31_elf = "./bl31.elf" |
| logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.DEBUG) |
| logging.warning(' BL31 file bl31.elf NOT found, resulting binary is non-functional') |
| logging.warning(' Please read Building section in doc/README.rockchip') |
| |
| if "TEE" in os.environ: |
| tee_elf = os.getenv("TEE") |
| elif os.path.isfile("./tee.elf"): |
| tee_elf = "./tee.elf" |
| else: |
| tee_elf = "" |
| |
| opts, args = getopt.getopt(sys.argv[1:], "o:u:b:t: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 == "-t": |
| tee_elf = val |
| elif opt == "-h": |
| print(__doc__) |
| sys.exit(2) |
| |
| dtbs = args |
| |
| generate_atf_fit_dts(fit_its, bl31_elf, tee_elf, uboot_elf, dtbs) |
| generate_atf_binary(bl31_elf) |
| generate_tee_binary(tee_elf) |
| |
| if __name__ == "__main__": |
| main() |