Tom Rini
7 years ago
commit
eeab579aa8
@ -0,0 +1,221 @@ |
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#!/usr/bin/env python2 |
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""" |
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A script to generate FIT image source for rockchip boards |
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with ARM Trusted Firmware |
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and multiple device trees (given on the command line) |
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|
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usage: $0 <dt_name> [<dt_name> [<dt_name] ...] |
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""" |
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|
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import os |
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import sys |
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import getopt |
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|
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# pip install pyelftools |
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from elftools.elf.elffile import ELFFile |
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from elftools.elf.sections import SymbolTableSection |
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from elftools.elf.segments import Segment, InterpSegment, NoteSegment |
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|
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ELF_SEG_P_TYPE='p_type' |
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ELF_SEG_P_PADDR='p_paddr' |
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ELF_SEG_P_VADDR='p_vaddr' |
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ELF_SEG_P_OFFSET='p_offset' |
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ELF_SEG_P_FILESZ='p_filesz' |
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ELF_SEG_P_MEMSZ='p_memsz' |
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|
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DT_HEADER="""/* |
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* Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd |
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* |
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* Minimal dts for a SPL FIT image payload. |
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* |
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* SPDX-License-Identifier: GPL-2.0+ X11 |
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*/ |
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/dts-v1/; |
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|
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/ { |
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description = "Configuration to load ATF before U-Boot"; |
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#address-cells = <1>; |
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|
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images { |
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uboot@1 { |
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description = "U-Boot (64-bit)"; |
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data = /incbin/("u-boot-nodtb.bin"); |
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type = "standalone"; |
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os = "U-Boot"; |
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arch = "arm64"; |
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compression = "none"; |
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load = <0x%08x>; |
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}; |
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""" |
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DT_IMAGES_NODE_END=""" |
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}; |
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""" |
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DT_END=""" |
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}; |
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""" |
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|
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def append_atf_node(file, atf_index, phy_addr): |
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""" |
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Append ATF DT node to input FIT dts file. |
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""" |
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data = 'bl31_0x%08x.bin' % phy_addr |
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print >> file, '\t\tatf@%d {' % atf_index |
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print >> file, '\t\t\tdescription = \"ARM Trusted Firmware\";' |
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print >> file, '\t\t\tdata = /incbin/("%s");' % data |
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print >> file, '\t\t\ttype = "firmware";' |
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print >> file, '\t\t\tarch = "arm64";' |
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print >> file, '\t\t\tos = "arm-trusted-firmware";' |
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print >> file, '\t\t\tcompression = "none";' |
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print >> file, '\t\t\tload = <0x%08x>;' % phy_addr |
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if atf_index == 1: |
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print >> file, '\t\t\tentry = <0x%08x>;' % phy_addr |
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print >> file, '\t\t};' |
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print >> file, '' |
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|
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def append_fdt_node(file, dtbs): |
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""" |
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Append FDT nodes. |
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""" |
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cnt = 1 |
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for dtb in dtbs: |
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dtname = os.path.basename(dtb) |
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print >> file, '\t\tfdt@%d {' % cnt |
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print >> file, '\t\t\tdescription = "%s";' % dtname |
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print >> file, '\t\t\tdata = /incbin/("%s");' % dtb |
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print >> file, '\t\t\ttype = "flat_dt";' |
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print >> file, '\t\t\tcompression = "none";' |
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print >> file, '\t\t};' |
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print >> file, '' |
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cnt = cnt + 1 |
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|
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def append_conf_section(file, cnt, dtname, atf_cnt): |
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print >> file, '\t\tconfig@%d {' % cnt |
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print >> file, '\t\t\tdescription = "%s";' % dtname |
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print >> file, '\t\t\tfirmware = "atf@1";' |
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print >> file, '\t\t\tloadables = "uboot@1",', |
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for i in range(1, atf_cnt): |
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print >> file, '"atf@%d"' % (i+1), |
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if i != (atf_cnt - 1): |
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print >> file, ',', |
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else: |
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print >> file, ';' |
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print >> file, '\t\t\tfdt = "fdt@1";' |
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print >> file, '\t\t};' |
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print >> file, '' |
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|
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def append_conf_node(file, dtbs, atf_cnt): |
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""" |
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Append configeration nodes. |
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""" |
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cnt = 1 |
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print >> file, '\tconfigurations {' |
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print >> file, '\t\tdefault = "config@1";' |
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for dtb in dtbs: |
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dtname = os.path.basename(dtb) |
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append_conf_section(file, cnt, dtname, atf_cnt) |
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cnt = cnt + 1 |
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print >> file, '\t};' |
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print >> file, '' |
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|
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def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_file_name): |
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""" |
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Generate FIT script for ATF image. |
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""" |
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if fit_file_name != sys.stdout: |
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fit_file = open(fit_file_name, "wb") |
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else: |
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fit_file = sys.stdout |
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num_load_seg = 0 |
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p_paddr = 0xFFFFFFFF |
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with open(uboot_file_name) as uboot_file: |
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uboot = ELFFile(uboot_file) |
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for i in range(uboot.num_segments()): |
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seg = uboot.get_segment(i) |
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if ('PT_LOAD' == seg.__getitem__(ELF_SEG_P_TYPE)): |
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p_paddr = seg.__getitem__(ELF_SEG_P_PADDR) |
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num_load_seg = num_load_seg + 1 |
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assert (p_paddr != 0xFFFFFFFF and num_load_seg == 1) |
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print >> fit_file, DT_HEADER % p_paddr |
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with open(bl31_file_name) as bl31_file: |
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bl31 = ELFFile(bl31_file) |
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for i in range(bl31.num_segments()): |
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seg = bl31.get_segment(i) |
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if ('PT_LOAD' == seg.__getitem__(ELF_SEG_P_TYPE)): |
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paddr = seg.__getitem__(ELF_SEG_P_PADDR) |
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p= seg.__getitem__(ELF_SEG_P_PADDR) |
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append_atf_node(fit_file, i+1, paddr) |
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atf_cnt = i+1 |
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append_fdt_node(fit_file, dtbs_file_name) |
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print >> fit_file, '%s' % DT_IMAGES_NODE_END |
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append_conf_node(fit_file, dtbs_file_name, atf_cnt) |
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print >> fit_file, '%s' % DT_END |
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if fit_file_name != sys.stdout: |
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fit_file.close() |
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|
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def generate_atf_binary(bl31_file_name): |
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with open(bl31_file_name) as bl31_file: |
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bl31 = ELFFile(bl31_file) |
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num = bl31.num_segments() |
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for i in range(num): |
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seg = bl31.get_segment(i) |
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if ('PT_LOAD' == seg.__getitem__(ELF_SEG_P_TYPE)): |
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paddr = seg.__getitem__(ELF_SEG_P_PADDR) |
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file_name = 'bl31_0x%08x.bin' % paddr |
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with open(file_name, "wb") as atf: |
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atf.write(seg.data()); |
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|
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def get_bl31_segments_info(bl31_file_name): |
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""" |
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Get load offset, physical offset, file size |
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from bl31 elf file program headers. |
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""" |
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with open(bl31_file_name) as bl31_file: |
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bl31 = ELFFile(bl31_file) |
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num = bl31.num_segments() |
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print 'Number of Segments : %d' % bl31.num_segments() |
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for i in range(num): |
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print 'Segment %d' % i |
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seg = bl31.get_segment(i) |
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ptype = seg[ELF_SEG_P_TYPE] |
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poffset = seg[ELF_SEG_P_OFFSET] |
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pmemsz = seg[ELF_SEG_P_MEMSZ] |
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pfilesz = seg[ELF_SEG_P_FILESZ] |
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print 'type: %s\nfilesz: %08x\nmemsz: %08x\noffset: %08x' % (ptype, pfilesz, pmemsz, poffset) |
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paddr = seg[ELF_SEG_P_PADDR] |
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print 'paddr: %08x' % paddr |
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|
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def main(): |
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uboot_elf="./u-boot" |
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bl31_elf="./bl31.elf" |
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FIT_ITS=sys.stdout |
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opts, args = getopt.getopt(sys.argv[1:], "o:u:b:h") |
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for opt, val in opts: |
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if opt == "-o": |
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FIT_ITS=val |
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elif opt == "-u": |
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uboot_elf=val |
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elif opt == "-b": |
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bl31_elf=val |
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elif opt == "-h": |
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print __doc__ |
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sys.exit(2) |
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dtbs = args |
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#get_bl31_segments_info("u-boot") |
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#get_bl31_segments_info("bl31.elf") |
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generate_atf_fit_dts(FIT_ITS, bl31_elf, uboot_elf, dtbs) |
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generate_atf_binary(bl31_elf); |
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if __name__ == "__main__": |
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main() |
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