1 # Copyright (c) 2016 Google, Inc
2 # Written by Simon Glass <sjg@chromium.org>
4 # SPDX-License-Identifier: GPL-2.0+
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.
12 from entry import Entry
13 from blob import Entry_blob
16 class Entry_u_boot_spl_bss_pad(Entry_blob):
17 def __init__(self, image, etype, node):
18 Entry_blob.__init__(self, image, etype, node)
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