Hi,

i'm facing a problem in older uboot-code which may be fixed on newer, but i did not found the fixing commit yet. Maybe you can point me to it.

I need to use older code in this case because driver for mt7622 and other is not yet available for upstream uboot.

I have temporary changed optimization from -Os to -O1 which "fixes" the issue, currently i don't know why. Maybe you know more about it

I have found this Thread and tried to fix it with the packed-variant, but same crash happens again

http://u-boot.10912.n7.nabble.com/Data-Abort-with-gcc-7-1-td298217.html

my code (without last commit): https://github.com/frank-w/u-boot/tree/bpi-r64

my try to fix:

diff --git a/Makefile b/Makefile index fa9cbd50df..6c62f921a9 100755 --- a/Makefile +++ b/Makefile @@ -546,7 +546,7 @@ else

endif # $(dot-config)

-KBUILD_CFLAGS += -Os #-fomit-frame-pointer +KBUILD_CFLAGS += -Os -mno-unaligned-access #-fomit-frame-pointer

ifdef BUILD_TAG KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' diff --git a/include/net.h b/include/net.h index 0802fad876..f16b44def6 100644 --- a/include/net.h +++ b/include/net.h @@ -273,7 +273,7 @@ struct ip_hdr { /* * Internet Protocol (IP) + UDP header. */ -struct ip_udp_hdr { +struct __attribute__((__packed__)) ip_udp_hdr { uchar ip_hl_v; /* header length and version */ uchar ip_tos; /* type of service */ ushort ip_len; /* total length */

board is Bananapi R64 v0.1 (with rtl8367), code works with gcc4.8, 5.5, 6.3, but not with 7.3 and 8.3

regards Frank