mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
It is easier and less error-prone to use super() when the parent type is needed. Update binman to remove the type names. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
43 lines
1.7 KiB
Python
43 lines
1.7 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
|
|
# Copyright (c) 2016 Google, Inc
|
|
# Written by Simon Glass <sjg@chromium.org>
|
|
#
|
|
# Entry-type module for BSS padding for spl/u-boot-spl.bin. This padding
|
|
# can be added after the SPL binary to ensure that anything concatenated
|
|
# to it will appear to SPL to be at the end of BSS rather than the start.
|
|
#
|
|
|
|
from binman import elf
|
|
from binman.entry import Entry
|
|
from patman import command
|
|
from binman.etype.blob import Entry_blob
|
|
from patman import tools
|
|
|
|
class Entry_u_boot_spl_bss_pad(Entry_blob):
|
|
"""U-Boot SPL binary padded with a BSS region
|
|
|
|
Properties / Entry arguments:
|
|
None
|
|
|
|
This is similar to u_boot_spl except that padding is added after the SPL
|
|
binary to cover the BSS (Block Started by Symbol) region. This region holds
|
|
the various used by SPL. It is set to 0 by SPL when it starts up. If you
|
|
want to append data to the SPL image (such as a device tree file), you must
|
|
pad out the BSS region to avoid the data overlapping with U-Boot variables.
|
|
This entry is useful in that case. It automatically pads out the entry size
|
|
to cover both the code, data and BSS.
|
|
|
|
The ELF file 'spl/u-boot-spl' must also be available for this to work, since
|
|
binman uses that to look up the BSS address.
|
|
"""
|
|
def __init__(self, section, etype, node):
|
|
super().__init__(section, etype, node)
|
|
|
|
def ObtainContents(self):
|
|
fname = tools.GetInputFilename('spl/u-boot-spl')
|
|
bss_size = elf.GetSymbolAddress(fname, '__bss_size')
|
|
if not bss_size:
|
|
self.Raise('Expected __bss_size symbol in spl/u-boot-spl')
|
|
self.SetContents(tools.GetBytes(0, bss_size))
|
|
return True
|