[coreboot] Getting serial output from w83627hf?
Alp Eren Köse
alperenkose at buyutech.com.tr
Tue Oct 18 17:02:37 CEST 2011
By the way I do not have a "CMC state machine binary", which it says:
#We don't ship that, but booting without it is bound to fail
in the src/southbridge/intel/sch/Makefile.inc file. What is it, how can get
Is it likely for that to cause this serial output problem??
Thanks in advance.
2011/10/18 Alp Eren Köse <alperenkose at buyutech.com.tr>
> > Are you able to use the serial port when the vendor BIOS/(U)EFI image is
> Yes I can get output if I append the following to the kernel line in grub:
> console=ttyS0,115200 console=tty0
> And I have also set the show POST codes on the debug console but it doesn't
> produce anything either..
> 2011/10/18 Idwer Vollering <vidwer at gmail.com>
>> 2011/10/18 Alp Eren Köse <alperenkose at buyutech.com.tr>
>>> > Found Winbond W83627HF/F/HG/G (id=0x52, rev=0x41) at 0x2e
>>> > Register dump:
>>> > idx 02 20 21 22 23 24 25 26 28 29 2a 2b 2c 2e 2f
>>> > val ff 52 41 ff fe c0 00 00 00 00 fe c0 ff 00 ff
>>> > def 00 52 NA ff 00 MM 00 00 00 00 7c c0 00 00 00
>>> > CR24 (idx 24, in the above output) means control register 24, here is a
>>> link to the
>>> > superio's datasheet:
>>> Ok, I got it, but doesn't CR24 is set inside the w83627hf_set_clksel_48()
>> Yes it is, bit 6 (in control register 24), is raised in
>> w83627hf_set_clksel_48() .
>>> I still got no output from the serial unfortunately? :(
>> Are you able to use the serial port when the vendor BIOS/(U)EFI image is
>> coreboot mailing list: coreboot at coreboot.org
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