def SelectFdt(self, fdt_fname):
"""Select an FDT to control the firmware bundling
Args:
fdt_fname: The filename of the fdt to use.
Returns:
The Fdt object of the original fdt file, which we will not modify.
We make a copy of this which will include any on-the-fly changes we want
to make.
"""
self._fdt_fname = fdt_fname
self.CheckOptions()
fdt = Fdt(self._tools, self._fdt_fname)
# For upstream, select the correct architecture .dtsi manually.
if self._board == 'link' or 'x86' in self._board:
arch_dts = 'coreboot.dtsi'
elif self._board == 'daisy':
arch_dts = 'exynos5250.dtsi'
else:
arch_dts = 'tegra20.dtsi'
fdt.Compile(arch_dts)
self.fdt = fdt.Copy(os.path.join(self._tools.outdir, 'updated.dtb'))
return fdt
def ScanDtb(self):
"""Scan the device tree to obtain a tree of notes and properties
Once this is done, self.fdt.GetRoot() can be called to obtain the
device tree root node, and progress from there.
"""
self.fdt = Fdt(self._dtb_fname)
self.fdt.Scan()
def main():
"""Main function for pack_firmware.
We provide a way of packing firmware from the command line using this module
directly.
"""
parser = optparse.OptionParser()
parser.add_option('-v', '--verbosity', dest='verbosity', default=1,
type='int', help='Control verbosity: 0=silent, 1=progress, 3=full, '
'4=debug')
parser.add_option('-k', '--key', dest='key', type='string', action='store',
help='Path to signing key directory (default to dev key)',
default='##/usr/share/vboot/devkeys')
parser.add_option('-d', '--dt', dest='fdt', type='string', action='store',
help='Path to fdt file to use (binary ,dtb)', default='u-boot.dtb')
parser.add_option('-u', '--uboot', dest='uboot', type='string',
action='store', help='Executable bootloader file (U-Boot)',
default='u-boot.bin')
parser.add_option('-S', '--signed', dest='signed', type='string',
action='store', help='Path to signed boot binary (U-Boot + BCT + FDT)',
default='u-boot-fdt-signed.bin')
parser.add_option('-g', '--gbb', dest='gbb', type='string',
action='store', help='Path to Google Binary Block file',
default='gbb.bin')
parser.add_option('-o', '--outdir', dest='outdir', type='string',
action='store', help='Path to directory to use for intermediate and '
'output files', default='out')
(options, args) = parser.parse_args(sys.argv)
# Set up the output directory.
if not os.path.isdir(options.outdir):
os.makedirs(options.outdir)
# Get tools and fdt.
tools = Tools(options.verbosity)
fdt = Fdt(tools, options.fdt)
# Pack the firmware.
pack = PackFirmware(_PackOutput, tools, options.verbosity)
pack.SetupFiles(boot=options.uboot, signed=options.signed, gbb=options.gbb,
fwid=tools.GetChromeosVersion(), keydir=options.key)
pack.SelectFdt(fdt)
out_fname = os.path.join(options.outdir, 'image.bin')
pack.PackImage(options.outdir, out_fname)
print 'Output binary is %s' % out_fname
