Date: Sun, 22 May 2005 15:48:25 +0200 (CEST) From: Adrian Steinmann <ast@marabu.ch> To: FreeBSD-gnats-submit@FreeBSD.org Cc: phk@FreeBSD.org Subject: kern/81360: [patch] generic bios_string for GPIO/watchdog on Soekris/PCEngines/Advantech Message-ID: <200505221348.j4MDmPXi014805@pano.marabu.ch> Resent-Message-ID: <200505221400.j4ME0OrA003629@freefall.freebsd.org>
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>Number: 81360
>Category: kern
>Synopsis: [patch] generic bios_string for GPIO/watchdog on Soekris/PCEngines/Advantech
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Sun May 22 14:00:23 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Adrian Steinmann
>Release: FreeBSD 5.4-STABLE i386
>Organization:
Webgroup Consulting AG
>Environment:
System: FreeBSD pano.marabu.ch 5.4-STABLE FreeBSD 5.4-STABLE #1: Sun May 8 10:51:49 CEST 2005 root@pano.marabu.ch:/r/usr/obj/usr/src/sys/PANO i386
Tested on platforms which use the Geode or Elan processors; i.e.:
Soekris net45xx and net4801 platforms
Advantech PCM-582x platforms
PC Engines WRAP
>Description:
i386/geode.c wasn't finding the PC Engines signature, the second
argument needs to be > 0xf9000 in the call:
bios_string(0xf9000, 0xf9000, "PC Engines WRAP.1C ", 0)
Fixing this, I found it to be nice for bios_string to work
more generically to find other info in the BIOS OEM area.
As another side effect, watchdog() is now supported on
Advantech boxes when options CPU_GEODE is specified in
the kernel config.
>How-To-Repeat:
boot kernel with options CPU_SOEKRIS and options CPU_GEODE
on PC Engines platforms
>Fix:
The patches (files.i386 too different in RELENG_5/HEAD) at
http://webgroup.ch/FreeBSD/bios_oem_strings.patch_HEAD
http://webgroup.ch/FreeBSD/bios_oem_strings.patch_RELENG_5
now positively identify specific CPU_GEODE and CPU_ELAN platforms, i.e.:
Elan-mmcr Soekris net45xx comBIOS ver. 1.26a 20040819 Copyright (C) 2000-2004
Geode Soekris net4801 comBIOS ver. 1.27a 20041206 Copyright (C) 2000-2004
Geode PCM-5823 BIOS V1.12 (08/12/2002) 06/07/2002-GXm-Cx5530-2A434AKCC-00
Geode PC Engines WRAP.1C v1.03 tinyBIOS V1.4a (C)1997-2003
These dmesg strings are emitted at boot time and are also used in
i386/geode.c and i386/elan-mmcr.c for controlling the logic of GPIO
device configuration. The undocumented bios_string() is replaced
by a more generic bios_oem_strings(9) routine, now documented in
bios(9).
As a side effect, watchdog(8) is now easily supported on Advantech
PCM-582x platforms when options CPU_GEODE is specified in the kernel
config.
PS. There was a recent thread on this in -hackers starting at
Message-ID: <17037.14274.229768.369886@zaphod.home.loc>
>Release-Note:
>Audit-Trail:
>Unformatted:
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