site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=talk21.com; h=X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=2ExoC97hZ/m6DdQzzOnDHkaw4bgDVbhA/aLkHhy+4xKRwQXnMTK+FV5rfXDi84Q0GsKlc+cXUZfSowGiqvg0aybIqGLumzKUy4ZOg/cdLl4169tWNen/GJAhrbXeIlk06jW2RybMG9YeAUIpaEgdlXMDJxOZUKp0EptzC4k7/G0=; Hi, Thanks very much. Using the commands, after amending the settings for thermal-info I got the fan to turn on straight after booting, by setting them to 01010200 00000000 01010200 00000000. With the open firmware dump below of the values for via-pmu / power-mgt could anyone explain what the values present could likely be. i.e. are the set of 4 hex values likely to be 2 sets of values, or 4 separate ones? I decoded each of the hex values and got 16843264 for hex 01010200 and 1213468963 for hex 48434843. I think these refer to temperature values (perhaps F?). ff918050: /pci@f2000000/mac-io@17/via-pmu@16000/power-mgt compatible 7669612d 706d752d 393900.. ........ "via-pmu-99" device_type 706f7765 722d6d67 7400.... ........ "power-mgt" max-aux-power 00000000 ........ ........ ........ .... name 706f7765 722d6d67 7400.... ........ "power-mgt" prim-info 000000ff 00000060 00003e80 00017fb5 .......`..>..... 0010: 0000d607 00000000 00021300 46000220 ............F.. 0020: 101400.. ........ ........ ........ ... registry-name 65787469 6e742d67 70696f31 00...... extint-gpio1. thermal-info 01010200 00000000 48434843 00000000 ........HCHC.... Any knowledge people may have on this and Open Firmware properties would be much appreciated. Thanks, James. ----- Original Message ---- From: Josh de Cesare <decesare@apple.com> To: James Little <jkal@talk21.com> Cc: darwin-dev@lists.apple.com Sent: Wednesday, 1 October, 2008 2:55:00 PM Subject: Re: Open Firmware on Pismo James, You can build up properties with encode+. The following code: 0 encode-int 1 encode-int encode+ 2 encode-int encode+ 3 encode-int encode+ should leave on the stack the length 4*4 and address of 16 bytes containing the long words 0, 1, 2, and 3. Josh On Oct 1, 2008, at 4:16 AM, James Little wrote:

Hi,

I hope this is not too off-topic:

I've been delving around in open firmware on my Pismo to see if I can control the internal fan, or at least set a better temp. for it to come on at.

In the device tree I've found the via-pmu, and under this is a node called 'power-mgt'. A property of this is called 'thermal-info'. As far as I know this must be related to the temp sensor in the Pismo because the G4 chip I have in it doesn't have the thermal assist temp diode on the chip enabled.

To check that this was specific to the Pismo I found the same 'power- mgt' property on a Digital Audio G4, which had everything listed the same, apart from the 'thermal-info', which was missing.

I've now hit a problem. There are 4 values of data encoded in open firmware for the 'thermal-info'. I believe they are the limits for the fan, as they do not change from boot up o when the computer is definitely toasty.

I can write one value by using the following command:

[code]12345678 encode-int " thermal-info" property[/code]

However, I need to be able to write all 4 values - and I don't know the open firmware commands to do this... could anyone help?

Thanks (and sorry for the rambling post),

James.

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