Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262215AbUCLPzZ (ORCPT ); Fri, 12 Mar 2004 10:55:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262225AbUCLPzZ (ORCPT ); Fri, 12 Mar 2004 10:55:25 -0500 Received: from fmr06.intel.com ([134.134.136.7]:16804 "EHLO caduceus.jf.intel.com") by vger.kernel.org with ESMTP id S262215AbUCLPzM (ORCPT ); Fri, 12 Mar 2004 10:55:12 -0500 Subject: Re: Can't access ACPI memory through /dev/mem From: Len Brown To: "Ph. Marek" Cc: linux-kernel@vger.kernel.org In-Reply-To: References: Content-Type: text/plain Organization: Message-Id: <1079106900.2173.21.camel@dhcppc4> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.3 Date: 12 Mar 2004 10:55:00 -0500 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1995 Lines: 67 does dmidecode find what you're looking for? http://www.nongnu.org/dmidecode/ -Len On Fri, 2004-03-12 at 04:18, Ph. Marek wrote: > Hello everybody! > > My machine gives me for > $ cat /proc/iomem > 00000000-0009fbff : System RAM > 0009fc00-0009ffff : reserved > 000a0000-000bffff : Video RAM area > 000c0000-000c7fff : Video ROM > 000d0000-000d9fff : Extension ROM > 000f0000-000fffff : System ROM > 00100000-0f7dffff : System RAM > 00100000-0022ca51 : Kernel code > 0022ca52-0029d8e3 : Kernel data > 0f7e0000-0f7e7fff : ACPI Tables > 0f7e8000-0f7fffff : ACPI Non-volatile Storage > 80100000-801fffff : PCI Bus #01 > 80100000-8011ffff : Silicon Integrated Systems [SiS] SiS630 > GUI > and so on. > > Now I can access the whole area below the ACPI tables (I tried RAM, > video and > system ROM, and kernel code/data). > But on reaching the ACPI tables and above (PCI space and so on) I get > no data > (that is, vche blanks the screen). > > I'd expect that for the PCI space - as this is really IO-memory and > shouldn't > be messed with. > > But I'd like to access the ACPI tables; especially the NVRAM, as some > machines > store DMI data there. > > This is on > Linux version 2.4.24-1-686 (herbert@gondolin) (gcc version > 3.3.2 (Debian)) > and an old 2.4.19 kernel. > > > Any tips? Help for accessing this memory space? > > > Regards, > > Phil > - > To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/