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