rpi2 snapshots not booting?

[Mark Millard]

On Mon May 2 18:02:16 UTC 2016 Adrian Chadd wrote:

> On 30 April 2016 at 14:34, Adrian Chadd <adrian at freebsd.org wrote:
> > Hiya,
> >
> > I'm trying to boot the -HEAD snapshot on a rpi2. I've tried two, to no success.
> 
> [snip]
> 
> ping - the last two snapshots didn't boot, and so anyone trying
> freebsd-head on this will have a very crappy day.
> 
> Is anyone able to help figure out what broke?
> 
> 
> -a

(Any following quoted text is my copy and paste of my own local material.)

I have an rpi2 running:

> # uname -apKU
> FreeBSD rpi2 11.0-CURRENT FreeBSD 11.0-CURRENT #21 r297769M: Sat Apr  9 22:51:03 PDT 2016     markmi at FreeBSDx64:/usr/obj/clang/arm.armv6/usr/src/sys/RPI2-NODBG  arm armv6 1100105 1100105

-r297769 would be between

CHECKSUM.SHA256-FreeBSD-11.0-CURRENT-arm-armv6-RPI2-20160408-r297692
and
CHECKSUM.SHA256-FreeBSD-11.0-CURRENT-arm-armv6-RPI2-20160429-r298793

At the time it was a buildworld buildkernel update based on a cross-build from an amd64 context. I do remember having to update rpi.dtb on the FAT partition at some point along the way. ( https://lists.freebsd.org/pipermail/freebsd-arm/2016-April/013657.html "No usable event timer found on RPI2" )


Overall this makes me wonder if there is something more specific to the snapshots that is a problem instead of there being a general 11.0-CURRENT problem.


I did (and generally do) use compiler options in src.conf to force targeting armv7a/cortex-a7 for the rpi2:

> WITH_LIBSOFT=
> WITH_LIBCPLUSPLUS=
> WITH_BINUTILS_BOOTSTRAP=
> WITH_CLANG=
> WITH_CLANG_IS_CC=
> WITH_CLANG_FULL=
> WITH_LLDB=
> WITH_CLANG_EXTRAS=
> WITH_BOOT=
> #
> WITHOUT_LIB32=
> WITHOUT_ELFTOOLCHAIN_BOOTSTRAP=
> WITHOUT_CLANG_BOOTSTRAP=
> WITHOUT_GCC_BOOTSTRAP=
> WITHOUT_GCC=
> WITHOUT_GNUCXX=
> #
> NO_WERROR=
> MALLOC_PRODUCTION=
> #
> WITH_DEBUG_FILES=
> #
> .if ${.MAKE.LEVEL} == 0
> XCC=/usr/bin/clang -target armv6--freebsd11.0-gnueabi -march=armv7a -mcpu=cortex-a7 -mno-unaligned-access
> XCXX=/usr/bin/clang++ -target armv6--freebsd11.0-gnueabi -march=armv7a -mcpu=cortex-a7 -mno-unaligned-access
> XCPP=/usr/bin/clang-cpp -target armv6--freebsd11.0-gnueabi -march=armv7a -mcpu=cortex-a7 -mno-unaligned-access
> .export XCC
> .export XCXX
> .export XCPP
> .endif
> #
> .if ${.MAKE.LEVEL} == 0
> CC=/usr/bin/clang
> CXX=/usr/bin/clang++
> CPP=/usr/bin/clang-cpp
> .export CC
> .export CXX
> .export CPP
> .endif

The amd64 context was updated to 11.0-CURRENT -r297769 before the rpi2 rebuild was done. So clang was already the matching version, no clang bootstrap needed as far as I know.

make.conf was empty.

===
Mark Millard
markmi at dsl-only.net