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rockchip: Cleanup of make_fit_atf.py.

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This patch cleans up make_fit_atf.py in the following way:

* Fix all issues reported by pylint
* Move copyright notice from file-to-generate to script
* Fix of-by-one bugs in loadables property
* Remove commented-out (dead) code.

Besides the bugfix no intended changes.

Tested on RK3399-Q7 with TF-A v2.1 as BL31.

Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Christoph Muellner 2019-05-07 11:11:01 +02:00 • committed by Kever Yang
parent 2461543632
commit b238e4b00c
1 changed files with 64 additions and 89 deletions
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153
arch/arm/mach-rockchip/make_fit_atf.py
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@ -1,10 +1,12 @@
#!/usr/bin/env python #!/usr/bin/env python
""" """
A script to generate FIT image source for rockchip boards # SPDX-License-Identifier: GPL-2.0+
with ARM Trusted Firmware #
and multiple device trees (given on the command line) # A script to generate FIT image source for rockchip boards
# with ARM Trusted Firmware
usage: $0 <dt_name> [<dt_name> [<dt_name] ...] # and multiple device trees (given on the command line)
#
# usage: $0 <dt_name> [<dt_name> [<dt_name] ...]
""" """
import os import os
@ -14,26 +16,27 @@ import getopt
# pip install pyelftools # pip install pyelftools
from elftools.elf.elffile import ELFFile from elftools.elf.elffile import ELFFile
ELF_SEG_P_TYPE='p_type' ELF_SEG_P_TYPE = 'p_type'
ELF_SEG_P_PADDR='p_paddr' ELF_SEG_P_PADDR = 'p_paddr'
ELF_SEG_P_VADDR='p_vaddr' ELF_SEG_P_VADDR = 'p_vaddr'
ELF_SEG_P_OFFSET='p_offset' ELF_SEG_P_OFFSET = 'p_offset'
ELF_SEG_P_FILESZ='p_filesz' ELF_SEG_P_FILESZ = 'p_filesz'
ELF_SEG_P_MEMSZ='p_memsz' ELF_SEG_P_MEMSZ = 'p_memsz'
DT_HEADER="""// SPDX-License-Identifier: GPL-2.0+ OR X11 DT_HEADER = """
/* /*
* Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd * This is a generated file.
*
* Minimal dts for a SPL FIT image payload.
*/ */
/dts-v1/; /dts-v1/;
/ { / {
description = "Configuration to load ATF before U-Boot"; description = "FIT image for U-Boot with bl31 (TF-A)";
#address-cells = <1>; #address-cells = <1>;
images { images {
"""
DT_UBOOT = """
uboot { uboot {
description = "U-Boot (64-bit)"; description = "U-Boot (64-bit)";
data = /incbin/("u-boot-nodtb.bin"); data = /incbin/("u-boot-nodtb.bin");
@ -46,18 +49,14 @@ DT_HEADER="""// SPDX-License-Identifier: GPL-2.0+ OR X11
""" """
DT_IMAGES_NODE_END=""" DT_IMAGES_NODE_END = """ };
};
""" """
DT_END=""" DT_END = "};"
};
"""
def append_atf_node(file, atf_index, phy_addr, elf_entry): def append_bl31_node(file, atf_index, phy_addr, elf_entry):
""" # Append BL31 DT node to input FIT dts file.
Append ATF DT node to input FIT dts file.
"""
data = 'bl31_0x%08x.bin' % phy_addr data = 'bl31_0x%08x.bin' % phy_addr
file.write('\t\tatf_%d {\n' % atf_index) file.write('\t\tatf_%d {\n' % atf_index)
file.write('\t\t\tdescription = \"ARM Trusted Firmware\";\n') file.write('\t\t\tdescription = \"ARM Trusted Firmware\";\n')
@ -73,9 +72,7 @@ def append_atf_node(file, atf_index, phy_addr, elf_entry):
file.write('\n') file.write('\n')
def append_fdt_node(file, dtbs): def append_fdt_node(file, dtbs):
""" # Append FDT nodes.
Append FDT nodes.
"""
cnt = 1 cnt = 1
for dtb in dtbs: for dtb in dtbs:
dtname = os.path.basename(dtb) dtname = os.path.basename(dtb)
@ -88,14 +85,14 @@ def append_fdt_node(file, dtbs):
file.write('\n') file.write('\n')
cnt = cnt + 1 cnt = cnt + 1
def append_conf_section(file, cnt, dtname, atf_cnt): def append_conf_section(file, cnt, dtname, segments):
file.write('\t\tconfig_%d {\n' % cnt) file.write('\t\tconfig_%d {\n' % cnt)
file.write('\t\t\tdescription = "%s";\n' % dtname) file.write('\t\t\tdescription = "%s";\n' % dtname)
file.write('\t\t\tfirmware = "atf_1";\n') file.write('\t\t\tfirmware = "atf_1";\n')
file.write('\t\t\tloadables = "uboot",') file.write('\t\t\tloadables = "uboot",')
for i in range(1, atf_cnt): for i in range(1, segments):
file.write('"atf_%d"' % (i+1)) file.write('"atf_%d"' % (i))
if i != (atf_cnt - 1): if i != (segments - 1):
file.write(',') file.write(',')
else: else:
file.write(';\n') file.write(';\n')
@ -103,57 +100,58 @@ def append_conf_section(file, cnt, dtname, atf_cnt):
file.write('\t\t};\n') file.write('\t\t};\n')
file.write('\n') file.write('\n')
def append_conf_node(file, dtbs, atf_cnt): def append_conf_node(file, dtbs, segments):
""" # Append configeration nodes.
Append configeration nodes.
"""
cnt = 1 cnt = 1
file.write('\tconfigurations {\n') file.write('\tconfigurations {\n')
file.write('\t\tdefault = "config_1";\n') file.write('\t\tdefault = "config_1";\n')
for dtb in dtbs: for dtb in dtbs:
dtname = os.path.basename(dtb) dtname = os.path.basename(dtb)
append_conf_section(file, cnt, dtname, atf_cnt) append_conf_section(file, cnt, dtname, segments)
cnt = cnt + 1 cnt = cnt + 1
file.write('\t};\n') file.write('\t};\n')
file.write('\n') file.write('\n')
def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_file_name): def generate_atf_fit_dts_uboot(fit_file, uboot_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
num_load_seg = 0 num_load_seg = 0
p_paddr = 0xFFFFFFFF p_paddr = 0xFFFFFFFF
with open(uboot_file_name, 'rb') as uboot_file: with open(uboot_file_name, 'rb') as uboot_file:
uboot = ELFFile(uboot_file) uboot = ELFFile(uboot_file)
for i in range(uboot.num_segments()): for i in range(uboot.num_segments()):
seg = uboot.get_segment(i) seg = uboot.get_segment(i)
if ('PT_LOAD' == seg.__getitem__(ELF_SEG_P_TYPE)): if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
p_paddr = seg.__getitem__(ELF_SEG_P_PADDR) p_paddr = seg.__getitem__(ELF_SEG_P_PADDR)
num_load_seg = num_load_seg + 1 num_load_seg = num_load_seg + 1
assert (p_paddr != 0xFFFFFFFF and num_load_seg == 1) assert (p_paddr != 0xFFFFFFFF and num_load_seg == 1)
fit_file.write(DT_HEADER % p_paddr) 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: with open(bl31_file_name, 'rb') as bl31_file:
bl31 = ELFFile(bl31_file) bl31 = ELFFile(bl31_file)
elf_entry = bl31.header['e_entry'] elf_entry = bl31.header['e_entry']
for i in range(bl31.num_segments()): segments = bl31.num_segments()
for i in range(segments):
seg = bl31.get_segment(i) seg = bl31.get_segment(i)
if ('PT_LOAD' == seg.__getitem__(ELF_SEG_P_TYPE)): if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
paddr = seg.__getitem__(ELF_SEG_P_PADDR) paddr = seg.__getitem__(ELF_SEG_P_PADDR)
p= seg.__getitem__(ELF_SEG_P_PADDR) append_bl31_node(fit_file, i + 1, paddr, elf_entry)
append_atf_node(fit_file, i+1, paddr, elf_entry)
atf_cnt = i+1
append_fdt_node(fit_file, dtbs_file_name) append_fdt_node(fit_file, dtbs_file_name)
fit_file.write('%s\n' % DT_IMAGES_NODE_END) fit_file.write(DT_IMAGES_NODE_END)
append_conf_node(fit_file, dtbs_file_name, atf_cnt) append_conf_node(fit_file, dtbs_file_name, segments)
fit_file.write('%s\n' % DT_END)
def generate_atf_fit_dts(fit_file_name, bl31_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, dtbs_file_name)
fit_file.write(DT_END)
if fit_file_name != sys.stdout: if fit_file_name != sys.stdout:
fit_file.close() fit_file.close()
@ -165,56 +163,33 @@ def generate_atf_binary(bl31_file_name):
num = bl31.num_segments() num = bl31.num_segments()
for i in range(num): for i in range(num):
seg = bl31.get_segment(i) seg = bl31.get_segment(i)
if ('PT_LOAD' == seg.__getitem__(ELF_SEG_P_TYPE)): if seg.__getitem__(ELF_SEG_P_TYPE) == 'PT_LOAD':
paddr = seg.__getitem__(ELF_SEG_P_PADDR) paddr = seg.__getitem__(ELF_SEG_P_PADDR)
file_name = 'bl31_0x%08x.bin' % paddr file_name = 'bl31_0x%08x.bin' % paddr
with open(file_name, "wb") as atf: with open(file_name, "wb") as atf:
atf.write(seg.data()); 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)
def main(): def main():
uboot_elf="./u-boot" uboot_elf = "./u-boot"
bl31_elf="./bl31.elf" bl31_elf = "./bl31.elf"
FIT_ITS=sys.stdout fit_its = sys.stdout
opts, args = getopt.getopt(sys.argv[1:], "o:u:b:h") opts, args = getopt.getopt(sys.argv[1:], "o:u:b:h")
for opt, val in opts: for opt, val in opts:
if opt == "-o": if opt == "-o":
FIT_ITS=val fit_its = val
elif opt == "-u": elif opt == "-u":
uboot_elf=val uboot_elf = val
elif opt == "-b": elif opt == "-b":
bl31_elf=val bl31_elf = val
elif opt == "-h": elif opt == "-h":
print(__doc__) print(__doc__)
sys.exit(2) sys.exit(2)
dtbs = args 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_fit_dts(fit_its, bl31_elf, uboot_elf, dtbs)
generate_atf_binary(bl31_elf); generate_atf_binary(bl31_elf)
if __name__ == "__main__": if __name__ == "__main__":
main() main()