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#!/usr/bin/env python
#
# Copyright 2010 Ettus Research LLC
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import platform
import tempfile
import subprocess
import urllib
import optparse
import math
import os
import re
########################################################################
# constants
########################################################################
SECTOR_SIZE = 512 # bytes
MAX_FILE_SIZE = 1 * (2**20) # maximum number of bytes we'll burn to a slot
FPGA_OFFSET = 0 # offset in flash to fpga image
FIRMWARE_OFFSET = 1 * (2**20) # offset in flash to firmware image
MAX_SD_CARD_SIZE = 2048e6 # bytes (any bigger is sdhc)
########################################################################
# helper functions
########################################################################
def command(*args):
p = subprocess.Popen(
args,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
)
ret = p.wait()
verbose = p.stdout.read()
if ret != 0: raise Exception, verbose
return verbose
def get_dd_path():
if platform.system() == 'Windows':
dd_path = os.path.join(tempfile.gettempdir(), 'dd.exe')
if not os.path.exists(dd_path):
print 'Downloading dd.exe to %s'%dd_path
dd_bin = urllib.urlopen('http://www.ettus.com/downloads/dd.exe').read()
open(dd_path, 'wb').write(dd_bin)
return dd_path
return 'dd'
def int_ceil_div(num, den):
return int(math.ceil(float(num)/float(den)))
def get_tmp_file():
tmp = tempfile.mkstemp()
os.close(tmp[0])
return tmp[1]
########################################################################
# list possible devices
########################################################################
def get_raw_device_hints():
####################################################################
# Platform Windows: parse the output of dd.exe --list
####################################################################
if platform.system() == 'Windows':
def extract_info_value(info, key):
return info.split(key)[-1].split()[0]
def get_info_list(output):
in_info = False
for line in output.splitlines():
if line.startswith('\\\\'): in_info = True; info = ''
elif in_info and not line.strip(): in_info = False; yield info
if in_info: info += '\n'+line.strip()
def is_info_valid(info):
try:
assert 'link to' in info
#handles two spellings of remov(e)able:
assert 'remov' in info.lower()
if 'size is' in info: assert int(extract_info_value(info, 'size is')) <= MAX_SD_CARD_SIZE
return True
except: return False
def extract_info_name(info):
for key in ('Mounted on', 'link to'):
if key in info: return extract_info_value(info, key)
return info.splitlines()[0].strip()
return sorted(set(map(extract_info_name, filter(is_info_valid, get_info_list(command(get_dd_path(), '--list'))))))
####################################################################
# Platform Linux: parse procfs /proc/partitions
####################################################################
if platform.system() == 'Linux':
devs = list()
try: output = open('/proc/partitions', 'r').read()
except: return devs
for line in output.splitlines():
try:
major, minor, blocks, name = line.split()
assert not name[-1].isdigit() or int(minor) == 0
assert int(blocks)*1024 <= MAX_SD_CARD_SIZE
except: continue
devs.append(os.path.join('/dev', name))
return sorted(set(devs))
####################################################################
# Platform Mac OS X: parse diskutil list and info commands
####################################################################
if platform.system() == 'Darwin':
devs = map(lambda d: d.split()[0], filter(lambda l: l.startswith('/dev'), command('diskutil', 'list').splitlines()))
def output_to_info(output):
return dict([map(str.strip, pair.lower().split(':')) for pair in filter(lambda l: ':' in l, output.splitlines())])
def is_dev_valid(dev):
info = output_to_info(command('diskutil', 'info', dev))
try:
if info.has_key('internal'): assert info['internal'] == 'no'
if info.has_key('ejectable'): assert info['ejectable'] == 'yes'
if info.has_key('total size'):
size_match = re.match('^.*\((\d+)\s*bytes\).*$', info['total size'])
if size_match: assert int(size_match.groups()[0]) <= MAX_SD_CARD_SIZE
return True
except: return False
return sorted(set(filter(is_dev_valid, devs)))
####################################################################
# Platform Others:
####################################################################
return ()
########################################################################
# write and verify with dd
########################################################################
def verify_image(image_file, device_file, offset):
#create a temporary file to store the readback image
tmp_file = get_tmp_file()
#read the image data
img_data = open(image_file, 'rb').read()
count = int_ceil_div(len(img_data), SECTOR_SIZE)
#execute a dd subprocess
verbose = command(
get_dd_path(),
"of=%s"%tmp_file,
"if=%s"%device_file,
"skip=%d"%(offset/SECTOR_SIZE),
"bs=%d"%SECTOR_SIZE,
"count=%d"%count,
)
#verfy the data
tmp_data = open(tmp_file, 'rb').read(len(img_data))
if img_data != tmp_data: return 'Verification Failed:\n%s'%verbose
return 'Verification Passed:\n%s'%verbose
def write_image(image_file, device_file, offset):
#create a temporary file to store the padded image
tmp_file = get_tmp_file()
#write the padded image data
img_data = open(image_file, 'rb').read()
count = int_ceil_div(len(img_data), SECTOR_SIZE)
pad_len = SECTOR_SIZE*count - len(img_data)
pad_str = ''.join([chr(0)]*pad_len) #zero-padding
open(tmp_file, 'wb').write(img_data + pad_str)
#execute a dd subprocess
verbose = command(
get_dd_path(),
"if=%s"%tmp_file,
"of=%s"%device_file,
"seek=%d"%(offset/SECTOR_SIZE),
"bs=%d"%SECTOR_SIZE,
"count=%d"%count,
)
try: #exec the sync command (only works on linux)
if platform.system() == 'Linux': command('sync')
except: pass
return verbose
def write_and_verify(image_file, device_file, offset):
if os.path.getsize(image_file) > MAX_FILE_SIZE:
raise Exception, 'Image file larger than %d bytes!'%MAX_FILE_SIZE
return '%s\n%s'%(
write_image(
image_file=image_file,
device_file=device_file,
offset=offset,
), verify_image(
image_file=image_file,
device_file=device_file,
offset=offset,
),
)
def burn_sd_card(dev, fw, fpga):
verbose = ''
if fw: verbose += 'Burn firmware image:\n%s\n'%write_and_verify(
image_file=fw, device_file=dev, offset=FIRMWARE_OFFSET
)
if fpga: verbose += 'Burn fpga image:\n%s\n'%write_and_verify(
image_file=fpga, device_file=dev, offset=FPGA_OFFSET
)
return verbose
########################################################################
# command line options
########################################################################
def get_options():
parser = optparse.OptionParser()
parser.add_option("--dev", type="string", help="raw device path", default='')
parser.add_option("--fw", type="string", help="firmware image path (optional)", default='')
parser.add_option("--fpga", type="string", help="fpga image path (optional)", default='')
parser.add_option("--list", action="store_true", help="list possible raw devices", default=False)
(options, args) = parser.parse_args()
if options.list:
print 'Possible raw devices:'
print ' ' + '\n '.join(get_raw_device_hints())
exit()
return options
########################################################################
# main
########################################################################
if __name__=='__main__':
options = get_options()
if not options.dev: raise Exception, 'no raw device path specified'
print burn_sd_card(dev=options.dev, fw=options.fw, fpga=options.fpga)
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