1# Copyright (c) 2016 Google, Inc
2# Written by Simon Glass <sjg@chromium.org>
3#
4# SPDX-License-Identifier:      GPL-2.0+
5#
6# Entry-type module for BSS padding for spl/u-boot-spl.bin. This padding
7# can be added after the SPL binary to ensure that anything concatenated
8# to it will appear to SPL to be at the end of BSS rather than the start.
9#
10
11import command
12from entry import Entry
13from blob import Entry_blob
14import tools
15
16class Entry_u_boot_spl_bss_pad(Entry_blob):
17    def __init__(self, image, etype, node):
18        Entry_blob.__init__(self, image, etype, node)
19
20    def ObtainContents(self):
21        fname = tools.GetInputFilename('spl/u-boot-spl')
22        args = [['nm', fname], ['grep', '__bss_size']]
23        out = command.RunPipe(args, capture=True).stdout.splitlines()
24        bss_size = int(out[0].split()[0], 16)
25        self.data = chr(0) * bss_size
26        self.contents_size = bss_size
27