u-boot/tools/binman/control.py
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

120 lines
3.7 KiB
Python

# SPDX-License-Identifier: GPL-2.0+
# Copyright (c) 2016 Google, Inc
# Written by Simon Glass <sjg@chromium.org>
#
# Creates binary images from input files controlled by a description
#
from collections import OrderedDict
import os
import sys
import tools
import command
import elf
import fdt
import fdt_util
from image import Image
import tout
# List of images we plan to create
# Make this global so that it can be referenced from tests
images = OrderedDict()
def _ReadImageDesc(binman_node):
"""Read the image descriptions from the /binman node
This normally produces a single Image object called 'image'. But if
multiple images are present, they will all be returned.
Args:
binman_node: Node object of the /binman node
Returns:
OrderedDict of Image objects, each of which describes an image
"""
images = OrderedDict()
if 'multiple-images' in binman_node.props:
for node in binman_node.subnodes:
images[node.name] = Image(node.name, node)
else:
images['image'] = Image('image', binman_node)
return images
def _FindBinmanNode(dtb):
"""Find the 'binman' node in the device tree
Args:
dtb: Fdt object to scan
Returns:
Node object of /binman node, or None if not found
"""
for node in dtb.GetRoot().subnodes:
if node.name == 'binman':
return node
return None
def Binman(options, args):
"""The main control code for binman
This assumes that help and test options have already been dealt with. It
deals with the core task of building images.
Args:
options: Command line options object
args: Command line arguments (list of strings)
"""
global images
if options.full_help:
pager = os.getenv('PAGER')
if not pager:
pager = 'more'
fname = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])),
'README')
command.Run(pager, fname)
return 0
# Try to figure out which device tree contains our image description
if options.dt:
dtb_fname = options.dt
else:
board = options.board
if not board:
raise ValueError('Must provide a board to process (use -b <board>)')
board_pathname = os.path.join(options.build_dir, board)
dtb_fname = os.path.join(board_pathname, 'u-boot.dtb')
if not options.indir:
options.indir = ['.']
options.indir.append(board_pathname)
try:
tout.Init(options.verbosity)
elf.debug = options.debug
try:
tools.SetInputDirs(options.indir)
tools.PrepareOutputDir(options.outdir, options.preserve)
dtb = fdt.FdtScan(dtb_fname)
node = _FindBinmanNode(dtb)
if not node:
raise ValueError("Device tree '%s' does not have a 'binman' "
"node" % dtb_fname)
images = _ReadImageDesc(node)
for image in images.values():
# Perform all steps for this image, including checking and
# writing it. This means that errors found with a later
# image will be reported after earlier images are already
# completed and written, but that does not seem important.
image.GetEntryContents()
image.GetEntryPositions()
image.PackEntries()
image.CheckSize()
image.CheckEntries()
image.ProcessEntryContents()
image.WriteSymbols()
image.BuildImage()
finally:
tools.FinaliseOutputDir()
finally:
tout.Uninit()
return 0