diff options
| -rwxr-xr-x | arch/arm/mach-rockchip/make_fit_atf.py | 75 |
1 files changed, 32 insertions, 43 deletions
diff --git a/arch/arm/mach-rockchip/make_fit_atf.py b/arch/arm/mach-rockchip/make_fit_atf.py index db0ae96ca8..b9a1988298 100755 --- a/arch/arm/mach-rockchip/make_fit_atf.py +++ b/arch/arm/mach-rockchip/make_fit_atf.py @@ -13,16 +13,7 @@ import os import sys import getopt import logging - -# 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' +import struct DT_HEADER = """ /* @@ -118,33 +109,19 @@ def append_conf_node(file, dtbs, segments): 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) - + 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, 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) + segments = unpack_elf(bl31_file_name) + for index, entry, paddr, data in segments: + append_bl31_node(fit_file, index + 1, paddr, 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) + append_conf_node(fit_file, dtbs_file_name, len(segments)) def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_file_name): # Generate FIT script for ATF image. @@ -162,17 +139,29 @@ def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_fi 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()) + 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 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" |