[coreboot] Getting serial output from w83627hf?

[Idwer Vollering]

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: http://www.itox.com/pages/support/wdt/W83627HF.pdf
>
> Ok, I got it, but doesn't CR24 is set inside the w83627hf_set_clksel_48()
> function..
>

Yes it is, bit 6 (in control register 24), is raised in
w83627hf_set_clksel_48() .
http://review.coreboot.org/gitweb?p=coreboot.git;a=blob;f=src/superio/winbond/w83627hf/early_serial.c


> 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
used?
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