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Date:      Sat, 03 Aug 2019 17:38:25 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 239620] 12-STABLE: boot failure due to bootloader issue on PCengine APU2C4 ( > r349288)
Message-ID:  <bug-239620-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239620

            Bug ID: 239620
           Summary: 12-STABLE: boot failure due to bootloader issue on
                    PCengine APU2C4 ( > r349288)
           Product: Base System
           Version: 12.0-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: ohartmann@walstatt.org

Using NanoBSD to create a 12-STABLE customized, efficient image for a small
routing and firewall appliance, results lately in a boot loader failure at =
the
very beginning of the boot process on a PCengine APU2C4.

The APU2C4 is equipted with 4 GB RAM, the latest firmware image available at
https://pcengines.github.io/ , which is at the time of writing this PR
v4.9.0.7, comprised of coreboot v4.9.0.7 and SeaBIOS 'rel-1.12.1.3', see URL
above.

The NanoBSD is booted from an internal SD card, the image is flashed via dd=
.=20

[...]
SeaBIOS (version rel-1.12.1.3-0-g300e8b7)

Press F10 key now for boot menu

Booting from Hard Disk...
/

 onsoles: internal video/keyboard=20=20=20
 IOS drive C: is disk0=20
 IOS drive D: is disk1=20
 IOS 639kB/3404444kB available memory=20

 reeBSD/x86 bootstrap loader, Revision 1.1=20=20
 Mon Apr 15 21:28:11 CEST 2019 root@thor)=20
 anic: free: guard2 fail @ 0x1000 + 2311663946 from X=C3=A7u0=C3=A7}4=C3=A7=
l$=E2=99=A6=E2=94=9C=C3=AD@=E2=94=A4=E2=99=A0:2106163957=20
 -> Press a key on the console to reboot <--=20=20=20
[...]

The last known good revision of 12-STABLE is r349288 which boots fine on the
APU2C4 with the above installed firmware version (v4.9.0.7). Starting with
r350274 (not necessarily the first culprit revision) the above shown error
occurs.

--=20
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