[coreboot] Audio mute problem

joe at smittys.pointclark.net joe at smittys.pointclark.net
Thu Mar 6 02:16:41 CET 2008

Quoting Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>:

> On 05.03.2008 23:09, joe at smittys.pointclark.net wrote:
>> Hello,
>> The audio on the RM4100 is muted by default. I know the assembly   
>> code  to unmute it but I am not so good with the assembly, could   
>> someone  translate this for me into human???
>> seg000:00000000 mov edx, 84Dh
>> seg000:00000005 mov eax, 0C0h ; '+'
>> seg000:0000000A out dx, al
> Write 0xc0 to port 0x84d.
> printf '\xc0' | dd of=/dev/port bs=1 seek=$[0x84d]
Thanks, actually I am doing this in coreboot auto.c:

	outl(0xc0, PME_IO_BASE_ADDR + 0x4d); /* GP3 */

I already have the function setup for other GPIO SuperIO registers.

Thanks - Joe

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