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August 18, 2019 12:08
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python dtbtool for montana
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#! /usr/bin/env python | |
# | |
# Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. | |
# | |
# Redistribution and use in source and binary forms, with or without | |
# modification, are permitted provided that the following conditions are | |
# met: | |
# * Redistributions of source code must retain the above copyright | |
# notice, this list of conditions and the following disclaimer. | |
# * Redistributions in binary form must reproduce the above | |
# copyright notice, this list of conditions and the following | |
# disclaimer in the documentation and/or other materials provided | |
# with the distribution. | |
# * Neither the name of The Linux Foundation nor the names of its | |
# contributors may be used to endorse or promote products derived | |
# from this software without specific prior written permission. | |
# | |
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED | |
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT | |
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS | |
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
# | |
# Drop in replacement for dtbTool | |
# | |
from functools import total_ordering | |
from struct import pack, unpack | |
import ctypes | |
import os | |
import sys | |
import re | |
from optparse import OptionParser | |
soc_ids = { | |
'msm8660' : 71, | |
'msm8960' : 87, | |
'apq8064' : 109, | |
'msm8660a' : 122, | |
'msm8260a' : 123, | |
'apq8060a' : 124, | |
'msm8974' : 126, | |
'msm8960ab' : 138, | |
'apq8060ab' : 139, | |
'msm8260ab' : 140, | |
'msm8660ab' : 141, | |
'apq8064_prime' : 153, | |
'apq8084' : 178, | |
'apq8074' : 184, | |
'msm8274' : 185, | |
'msm8674' : 186, | |
'msm8974_pro' : 194, | |
'ipq8062' : 201, | |
'ipq8064' : 202, | |
'ipq8066' : 203, | |
'msm8916' : 206, | |
'msm8994' : 207, | |
'apq8074_aa' : 208, | |
'apq8074_ab' : 209, | |
'apq8074_pro' : 210, | |
'msm8274_aa' : 211, | |
'msm8274_ab' : 212, | |
'msm8274_pro' : 213, | |
'msm8674_aa' : 214, | |
'msm8674_ab' : 215, | |
'msm8674_pro' : 216, | |
'msm8974_aa' : 217, | |
'msm8974_ab' : 218, | |
'apq8064_au' : 244, | |
'msm8909' : 245, | |
'msm8996' : 246, | |
'apq8016' : 247, | |
'msm8216' : 248, | |
'msm8992' : 251, | |
'apq8092' : 252, | |
'apq8094' : 253, | |
'ipq4019' : 273, | |
'apq8096' : 291, | |
'msm8998' : 292, | |
'msm8996sg' : 305, | |
} | |
platform_type = { | |
'cdp' : 1, | |
'ffa' : 2, | |
'fluid' : 3, | |
'fusion' : 4, | |
'oem' : 5, | |
'qt' : 6, | |
'mtp_mdm' : 7, | |
'mtp' : 8, | |
'liquid' : 9, | |
'dragonboard' : 10, | |
'qrd' : 11, | |
'evb' : 12, | |
'hrd' : 13, | |
'dtv' : 14, | |
'rumi' : 15, | |
'virtio' : 16, | |
'xpm' : 20, | |
'rcm' : 21, | |
'stp' : 23, | |
'sbc' : 24, | |
'cls' : 29, | |
} | |
pmic_ids = { | |
'pm8941' : 1, | |
'pm8841' : 2, | |
'pm8019' : 3, | |
'pm8026' : 4, | |
'pm8110' : 5, | |
'pma8084' : 6, | |
'pmi8962' : 7, | |
'pmd9635' : 8, | |
'pm8994' : 9, | |
'pmi8994' : 10, | |
'pm8916' : 11, | |
'pm8004' : 12, | |
'pm8909' : 13, | |
'pm2433' : 14, | |
'pmd9655' : 15, | |
'pm8950' : 16, | |
'pmi8950' : 17, | |
'pmk8001' : 18, | |
'pmi8996' : 19, | |
'pm8998' : 20, | |
'pmi8998' : 21, | |
'pm8953' : 22, | |
'smb1380' : 23, | |
'pm8005' : 24, | |
'pm8937' : 25, | |
} | |
boot_device_ids = { 'emmc_sdc1' : 2, 'ufs' : 4 } | |
boot_device_ids_mdm = { 'emmc_sdc1' : 3 } | |
panel_ids = { 'hd' : 0, '720p' : 1, 'qHD' : 2, 'fWVGA' : 3 } | |
try: | |
libfdt = ctypes.CDLL('libfdt.so') | |
except OSError: | |
sys.exit("libfdt is missing, please install it") | |
prototype = ctypes.CFUNCTYPE(ctypes.c_char_p, ctypes.c_void_p, ctypes.c_char_p) | |
paramflags = (1, "fdt", None), (1, "name", None) | |
fdt_get_alias = prototype(("fdt_get_alias", libfdt), paramflags) | |
prototype = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_void_p, ctypes.c_char_p) | |
paramflags = (1, "fdt", None), (1, "path", None) | |
fdt_path_offset = prototype(("fdt_path_offset", libfdt), paramflags) | |
prototype = ctypes.CFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int, ctypes.c_char_p, ctypes.c_void_p) | |
paramflags = (1, "fdt", None), (1, "nodeoffset", None), (1, "name", None), (1, "lenp", None) | |
fdt_getprop = prototype(("fdt_getprop", libfdt), paramflags) | |
def fdt_get_property_int(blob, nodeoffset, name): | |
"""Return an int list of property name's values at nodeoffset | |
""" | |
vals = [] | |
i = 0 | |
length = ctypes.c_int(0) | |
name = str.encode(name) | |
addr = fdt_getprop(blob, nodeoffset, name, ctypes.byref(length)) | |
if addr is None: | |
return None | |
addr = ctypes.cast(addr, ctypes.POINTER(ctypes.c_uint32)) | |
while i < length.value / 4: | |
# Convert from big-endian to native endianness | |
val = unpack("I", pack(">I", addr[i]))[0] | |
vals.append(val) | |
i += 1 | |
return vals | |
def fdt_get_property_string(blob, nodeoffset, name): | |
"""Return a string list of property name's values at nodeoffset | |
""" | |
vals = [] | |
i = 0 | |
length = ctypes.c_int(0) | |
name = str.encode(name) | |
val = fdt_getprop(blob, nodeoffset, name, ctypes.byref(length)) | |
if val is None: | |
return vals | |
while i < length.value: | |
c = ctypes.cast(val + i, ctypes.c_char_p).value.decode("utf-8") | |
vals.append(c) | |
i += len(vals[-1]) + 1 # Skip the NUL character | |
return vals | |
def find_pmics(blob): | |
pmics = [] | |
for usid in ["usid0", "usid2", "usid4", "usid6"]: | |
path = fdt_get_alias(blob, str.encode(usid)) | |
if path is None: | |
pmics.append("") | |
continue | |
off = fdt_path_offset(blob, path) | |
pmic = fdt_get_property_string(blob, off, "compatible") | |
pmics.append(pmic[0]) | |
return pmics | |
class QcomIds(object): | |
pattern = re.compile(r''' | |
qcom,(?P<soc>\w+) # SoC (req) | |
(-v(?P<soc_major>\d+)(.(?P<soc_minor>\d+))?)? # SoC version (opt) | |
(-(?P<foundry>\d+))? # foundry (opt) | |
-(?P<platform>\w+) # Platform (req) | |
(/(?P<platform_sub>\d+))? # Number for platform sub (opt) | |
(-v(?P<plat_major>\d+)(.(?P<plat_minor>\d+))?)? # Plat version (opt) | |
''', re.VERBOSE) | |
pmic_pattern = re.compile(r''' | |
qcom,(?P<pmic>\w+)(-v(?P<major>\d+)(.(?P<minor>\d+))?)? | |
''', re.VERBOSE) | |
def __init__(self, compat, pmics): | |
self.msm_id = [0, 0] | |
self.board_id = [0, 0] | |
self.pmic_id = [0, 0, 0, 0] | |
matches = QcomIds.pattern.match(compat).groupdict() | |
foundry = int(matches['foundry'] or 0) | |
self.msm_id[0] = soc_ids[matches['soc']] | (foundry << 16) | |
major = int(matches['soc_major'] or 0) | |
minor = int(matches['soc_minor'] or 0) | |
self.msm_id[1] = major << 16 | minor | |
plat = platform_type[matches['platform']] | |
subtype = int(matches['platform_sub'] or 0) | |
major = int(matches['plat_major'] or 0) | |
minor = int(matches['plat_minor'] or 0) | |
self.board_id[0] = plat | minor << 8 | major << 16 | subtype << 24 | |
self.board_id[1] = 0 | |
for (i, pmic) in enumerate(pmics): | |
if len(pmic) == 0: | |
continue | |
matches = QcomIds.pmic_pattern.match(pmic).groupdict() | |
model = pmic_ids[matches['pmic']] | |
major = int(matches['major'] or 0) | |
minor = int(matches['minor'] or 0) | |
self.pmic_id[i] = model | major << 16 | minor << 8 | |
@staticmethod | |
def valid(compat): | |
match = QcomIds.pattern.match(compat) | |
if match: | |
matches = match.groupdict() | |
return (matches['soc'] in soc_ids and | |
matches['platform'] in platform_type) | |
return False | |
@total_ordering | |
class DTRecord: | |
def __init__(self, plat_id, variant_id, subtype_id, soc_rev, pmic0, pmic1, pmic2, pmic3, offset, size, f, version): | |
self.plat_id = int(plat_id) | |
self.variant_id = int(variant_id) | |
self.subtype_id = int(subtype_id) | |
self.soc_rev = int(soc_rev) | |
self.pmic0 = int(pmic0) | |
self.pmic1 = int(pmic1) | |
self.pmic2 = int(pmic2) | |
self.pmic3 = int(pmic3) | |
self.offset = int(offset) | |
self.size = int(size) | |
self.f = f | |
self.version = int(version) | |
self.duplicate = False | |
def __eq__(self, other): | |
if other is None: | |
return False | |
return (self.plat_id == other.plat_id and | |
self.variant_id == other.variant_id and | |
self.subtype_id == other.subtype_id and | |
self.soc_rev == other.soc_rev and | |
self.pmic0 == other.pmic0 and | |
self.pmic1 == other.pmic1 and | |
self.pmic2 == other.pmic2 and | |
self.pmic3 == other.pmic3) | |
def __lt__(self, other): | |
if other is None: | |
return False | |
if self.plat_id < other.plat_id: | |
return True | |
if self.plat_id > other.plat_id: | |
return False | |
if self.variant_id < other.variant_id: | |
return True | |
if self.variant_id > other.variant_id: | |
return False | |
if self.subtype_id < other.subtype_id: | |
return True | |
if self.subtype_id > other.subtype_id: | |
return False | |
if self.soc_rev < other.soc_rev: | |
return True | |
if self.soc_rev > other.soc_rev: | |
return False | |
if self.pmic0 < other.pmic0: | |
return True | |
if self.pmic0 > other.pmic0: | |
return False | |
if self.pmic1 < other.pmic1: | |
return True | |
if self.pmic1 > other.pmic1: | |
return False | |
if self.pmic2 < other.pmic2: | |
return True | |
if self.pmic2 > other.pmic2: | |
return False | |
if self.pmic3 < other.pmic3: | |
return True | |
return False | |
def generate_records(f, pagesize): | |
version = None | |
size = os.stat(f).st_size | |
mod = size % pagesize | |
if mod != 0: | |
size += pagesize - mod; | |
fi = open(f, 'rb') | |
s = ctypes.create_string_buffer(fi.read()) | |
blob = ctypes.byref(s) | |
msm_id = fdt_get_property_int(blob, 0, "qcom,msm-id") | |
if msm_id is None: | |
compats = fdt_get_property_string(blob, 0, "compatible") | |
if len(compats) == 0: | |
sys.exit("%s is missing compatible?" % f) | |
board_id = fdt_get_property_int(blob, 0, "qcom,board-id") | |
pmic_id = fdt_get_property_int(blob, 0, "qcom,pmic-id") | |
if board_id: | |
x = iter(board_id) | |
board_id = list(zip(x, x)) | |
x = iter(msm_id) | |
msm_id = list(zip(x, x)) | |
version = 2 | |
elif msm_id: | |
x = iter(msm_id) | |
msm_id = list(zip(x, x, x)) | |
version = 1 | |
if pmic_id: | |
x = iter(pmic_id) | |
pmic_id = list(zip(x, x, x, x)) | |
version = 3 | |
records = [] | |
if version == 1: | |
for (plat_id, variant_id, soc_rev) in msm_id: | |
records += [DTRecord(plat_id, variant_id, 0, soc_rev, | |
0, 0, 0, 0, 0, size, f, version)] | |
elif version == 2: | |
for (plat_id, soc_rev) in msm_id: | |
for (variant_id, subtype_id) in board_id: | |
records += [DTRecord(plat_id, variant_id, | |
subtype_id, soc_rev, | |
0, 0, 0, 0, 0, size, f, | |
version)] | |
elif version == 3: | |
for (plat_id, soc_rev) in msm_id: | |
for (variant_id, subtype_id) in board_id: | |
for (pmic0, pmic1, pmic2, pmic3) in pmic_id: | |
records += [DTRecord(plat_id, variant_id, | |
subtype_id, soc_rev, | |
pmic0, pmic1, pmic2, | |
pmic3, 0, size, f, | |
version)] | |
else: | |
version = 3 | |
pmics = find_pmics(blob) | |
ids = [QcomIds(compat, pmics) for compat in compats | |
if QcomIds.valid(compat)] | |
records += [DTRecord(x.msm_id[0], x.board_id[0], x.board_id[1], | |
x.msm_id[1], x.pmic_id[0], x.pmic_id[1], | |
x.pmic_id[2], x.pmic_id[3], 0, size, f, | |
version) for x in ids] | |
return records | |
def write_padding(f, pagesize): | |
count = pagesize - (f.tell() % pagesize) | |
# Write padding as long as we aren't already aligned to a page | |
if count != pagesize: | |
output.write(b"".join([b'\x00' for x in range(count)])) | |
if __name__ == "__main__": | |
usage = ("""%prog -o <output file> <input DTB directory> [options]""") | |
parser = OptionParser(usage=usage) | |
# Standard options | |
parser.add_option("-o", "--output-file", dest="output", metavar="FILE", | |
help="output file") | |
parser.add_option("-p", "--dtc-path", dest="dtc", metavar="PATH", | |
help="path to dtc", default="") | |
parser.add_option("-v", "--verbose", action="store_true", | |
dest="verbose", help="verbose") | |
parser.add_option("-s", "--page-size", type="int", dest="pagesize", | |
default=2048, | |
help="page size in bytes [default: %default]") | |
# New options | |
parser.add_option("--version", dest="version", type="int", | |
help="Force version") | |
(options, args) = parser.parse_args() | |
if options.output is None: | |
parser.error("Output file must be specified") | |
if len(args) != 1: | |
parser.error("Exactly one input directory must be specified") | |
pagesize = options.pagesize | |
indir = args[0] | |
flist = [os.path.join(indir, f) | |
for f in os.listdir(indir) | |
if os.path.isfile(os.path.join(indir, f)) and | |
f.endswith('.dtb')] | |
records = [] | |
for f in flist: | |
records += generate_records(f, pagesize) | |
if len(records) == 0: | |
sys.exit("No valid dtbs found") | |
records.sort() | |
if options.version is None: | |
version = records[0].version | |
else: | |
version = options.version | |
try: | |
output = open(options.output, 'wb') | |
except IOError: | |
sys.exit("Can't open %s" % options.output) | |
offset = 12 | |
if version == 1: | |
offset += 5 * 4 * len(records) | |
elif version == 2: | |
offset += 6 * 4 * len(records) | |
elif version == 3: | |
offset += 10 * 4 * len(records) | |
offset += 4 | |
offset += pagesize - (offset % pagesize) | |
found = {} | |
p = None | |
for r in records: | |
if r.f in found: | |
r.duplicate = True | |
else: | |
if p: | |
offset += p.size | |
found[r.f] = offset | |
p = r | |
r.offset = found[r.f] | |
hdr_format = "<4sII" | |
blob = pack(hdr_format, b"QCDT", version, len(records)) | |
if version == 1: | |
blob_format = "<IIIII" | |
blob += b"".join([pack(blob_format, | |
r.plat_id, | |
r.variant_id, | |
r.subtype_id, | |
r.offset, | |
r.size) for r in records]) | |
elif version == 2: | |
blob_format = "<IIIIII" | |
blob += b"".join([pack(blob_format, | |
r.plat_id, | |
r.variant_id, | |
r.subtype_id, | |
r.soc_rev, | |
r.offset, | |
r.size) for r in records]) | |
elif version == 3: | |
blob_format = "<IIIIIIIIII" | |
blob += b"".join([pack(blob_format, | |
r.plat_id, | |
r.variant_id, | |
r.subtype_id, | |
r.soc_rev, | |
r.pmic0, | |
r.pmic1, | |
r.pmic2, | |
r.pmic3, | |
r.offset, | |
r.size) for r in records]) | |
blob += pack("<I", 0) | |
output.write(blob) | |
write_padding(output, pagesize) | |
for r in records: | |
try: | |
if not r.duplicate: | |
f = open(r.f, "rb") | |
output.write(f.read()) | |
write_padding(output, pagesize) | |
f.close() | |
except IOError: | |
sys.exit("Bad write") |
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