Problem booting an Raspberry Pi B+ with recent kernels

[Zbigniew Bodek]

Hello,

I've sent two patches related to HW watchpoints to review:
https://reviews.freebsd.org/D6008
https://reviews.freebsd.org/D6009

I tested them on Arndale but it would be great if someone could test them
on Raspberry-Pi (both of them, not one by one).

Thanks and best regards
zbb

2016-01-30 11:42 GMT-08:00 Michael Tuexen <tuexen at freebsd.org>:

> > On 30 Jan 2016, at 17:55, Zbigniew Bodek <zbb at freebsd.org> wrote:
> >
> > Hello,
> >
> > Please check this work-in-progress patch:
> >
> https://people.freebsd.org/~zbb/arm/other/0001-Fix-debug_monitor-code-for-older-ARMs-ARM11.patch
> I tested it. The Raspberry Pi B+ boots r295077 with you patch just fine.
> It looks good to me.
>
> Thanks for your help!
>
> Best regards
> Michael
> >
> > It works on RPI-B but I will need to test it again on CA9 and CA15
> > platforms before sending it for review.
> >
> > Best regards
> > zbb
> >
> > 2016-01-29 19:56 GMT+01:00 Zbigniew Bodek <zbb at semihalf.com>:
> >> Hello,
> >>
> >> This may be due to HW watchpoints support.
> >> There are many Debug Arch implementations and the code is supposed to
> check
> >> and enable or disable it accordingly but there may be a bug there.
> >> I asked people to test this on various platforms but maybe Raspberry Pi
> >> tests were performed on Cortex-A7 Raspberry Pi.
> >> I will check this on the old Rapsberry today.
> >>
> >> Best regards
> >> zbb
> >>
> >> 2016-01-29 18:16 GMT+01:00 Michael Tuexen <tuexen at freebsd.org>:
> >>
> >>> Dear all,
> >>>
> >>> tyring to compile/install/boot a recent kernel fails at the boot level.
> >>> Here is the console output:
> >>>
> >>> U-Boot 2013.01-rc1 (Oct 17 2015 - 00:45:25)
> >>>
> >>> DRAM:  480 MiB
> >>> WARNING: Caches not enabled
> >>> MMC:   bcm2835_sdhci: 0
> >>> reading u-boot.env
> >>>
> >>> ** Unable to read "u-boot.env" from mmc0:1 **
> >>> Using default environment
> >>>
> >>> In:    serial
> >>> Out:   lcd
> >>> Err:   lcd
> >>> mbox: Timeout waiting for response
> >>> bcm2835: Could not set USB power state
> >>> Net:   Net Initialization Skipped
> >>> No ethernet found.
> >>> reading uEnv.txt
> >>> ** Unable to read file uEnv.txt **
> >>> Hit any key to stop autoboot:  0
> >>> Booting from: mmc 0 ubldr
> >>> reading ubldr
> >>> 262248 bytes read in 55694 ms (3.9 KiB/s)
> >>> ## Starting application at 0x02000094 ...
> >>> Consoles: U-Boot console
> >>> Compatible U-Boot API signature found @1db682a8
> >>>
> >>> FreeBSD/armv6 U-Boot loader, Revision 1.2
> >>> (root at releng2.nyi.freebsd.org, Sat Oct 17 01:09:56 UTC 2015)
> >>>
> >>> DRAM: 480MB
> >>> Number of U-Boot devices: 1
> >>> U-Boot env: loaderdev='mmc 0'
> >>> Found U-Boot device: disk
> >>>  Checking unit=0 slice=<auto> partition=<auto>... good.
> >>> /boot/kernel/kernel text=0x58fb98 data=0x555a4+0xe5e9c
> >>> syms=[0x4+0xc6da0+0x4+0x94793]
> >>>
> >>> Hit [Enter] to boot immediately, or any other key for command prompt.
> >>> Booting [/boot/kernel/kernel]...
> >>> Using DTB provided by U-Boot at address 0x100.
> >>> Kernel entry at 0x2200180...
> >>> Kernel args: (null)
> >>> panic: Undefined instruction in kernel.
> >>>
> >>> Uptime: 1s
> >>>
> >>> Please note that
> >>> * booting r294694 is fine.
> >>> * I'm only updating the kernel, the userland is still at 1100081.
> >>>
> >>> Any idea?
> >>>
> >>> Best regards
> >>> Michael
> >>>
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>