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Christian Lamparter 91d3b87353 uboot-fritz4040: fix crash caused by interaction with gcc 7.1+
David Bauer reported a u-boot crash (data abort) at a odd
place (byteswap) when he ran ping/tftp on his 7530.

|(FRITZ7530) # ping 192.168.1.70
|eth0 PHY0 up Speed :1000 Full duplex
|eth0 PHY1 Down Speed :10 Half duplex
|eth0 PHY2 Down Speed :10 Half duplex
|eth0 PHY3 Down Speed :10 Half duplex
|eth0 PHY4 Down Speed :10 Half duplex
|Using eth0 device
|data abort
|pc : [<84234774>]      lr : [<842351a4>]
|sp : 8412fdb0  ip : 0000009b     fp : 00000000
|r10: 00000000  r9 : 00000001     r8 : 8412ff68
|r7 : 00000000  r6 : 0000002a     r5 : 84244e90  r4 : 8425e28e
|r3 : 84244e90  r2 : 14000045     r1 : 8412fdb0  r0 : 8425e28e
|Flags: nZCv  IRQs off  FIQs off  Mode SVC_32
|Resetting CPU ...
|
|resetting ...

This issue is caused by switch from gcc 5.5 to 7.1+ as explained
in the upstream patch:

|From a768e513b07b5999a8e7d7740ac8d9da04ee7e51 Mon Sep 17 00:00:00 2001
|From: Denis Pynkin <denis.pynkin@collabora.com>
|Date: Fri, 21 Jul 2017 19:28:42 +0300
|Subject: [PATCH] net: Use packed structures for networking
|
|PXE boot is broken with GCC 7.1 due option '-fstore-merging' enabled
|by default for '-O2':
|
|BOOTP broadcast 1
|data abort
|pc : [<8ff8bb30>]          lr : [<00004f1f>]
|reloc pc : [<17832b30>]    lr : [<878abf1f>]
|sp : 8f558bc0  ip : 00000000     fp : 8ffef5a4
|r10: 8ffed248  r9 : 8f558ee0     r8 : 8ffef594
|r7 : 0000000e  r6 : 8ffed700     r5 : 00000000  r4 : 8ffed74e
|r3 : 00060101  r2 : 8ffed230     r1 : 8ffed706  r0 : 00000ddd
|Flags: nzcv  IRQs off  FIQs off  Mode S
|
|Core reason is usage of structures for network headers without packed
|attribute.

This patch just backports the upstream change to the
uboot-fritz4040 package.

Reported-by: David Bauer <mail@david-bauer.net>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2019-01-26 19:40:23 +01:00
.github build: Update README & github help 2018-08-08 15:32:55 +02:00
config build: add support for enabling the rootfs/boot partition size option via target feature 2018-12-18 11:28:12 +01:00
include kernel: bump 4.14 to 4.14.94 2019-01-23 11:03:20 +01:00
package uboot-fritz4040: fix crash caused by interaction with gcc 7.1+ 2019-01-26 19:40:23 +01:00
scripts scripts: update config.guess and config.sub 2018-12-18 17:22:07 +01:00
target ramips: mt7621: fix 5GHz WiFi LED on ZBT WG3526 2019-01-21 19:15:36 +01:00
toolchain toolchain: gdb: enable TUI 2018-12-18 09:44:04 +01:00
tools tools/firmware-utils: fix sysupgrade typo in mkdapimg2 2019-01-13 10:13:18 +01:00
.gitattributes add .gitattributes to prevent the git autocrlf option from messing with CRLF/LF in files 2012-05-08 13:30:49 +00:00
.gitignore .gitignore: add .project & .cproject for eclipse users 2018-01-17 11:07:17 +01:00
BSDmakefile add missing copyright header 2007-02-26 01:05:09 +00:00
Config.in merge: base: update base-files and basic config 2017-12-08 19:41:18 +01:00
feeds.conf.default OpenWrt v18.06.1: revert to branch defaults 2018-08-16 18:36:52 +02:00
LICENSE finally move buildroot-ng to trunk 2016-03-20 17:29:15 +01:00
Makefile build: Unset CDPATH to avoid problems 2018-12-18 11:28:11 +01:00
README build: README punctuation pendantry 2018-08-08 15:33:03 +02:00
rules.mk rules.mk: add ESED command 2018-12-18 11:28:13 +01:00

  _______                     ________        __
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          |__| W I R E L E S S   F R E E D O M
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This is the buildsystem for the OpenWrt Linux distribution.

To build your own firmware you need a Linux, BSD or MacOSX system (case
sensitive filesystem required). Cygwin is unsupported because of the lack
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You need gcc, binutils, bzip2, flex, python, perl, make, find, grep, diff,
unzip, gawk, getopt, subversion, libz-dev and libc headers installed.

1. Run "./scripts/feeds update -a" to obtain all the latest package definitions
defined in feeds.conf / feeds.conf.default

2. Run "./scripts/feeds install -a" to install symlinks for all obtained
packages into package/feeds/

3. Run "make menuconfig" to select your preferred configuration for the
toolchain, target system & firmware packages.

4. Run "make" to build your firmware. This will download all sources, build
the cross-compile toolchain and then cross-compile the Linux kernel & all
chosen applications for your target system.

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