[coreboot] flashrom touches only 0x70000-0x80000 addresses of my bios flash

Alexander Gordeev lasaine at lvk.cs.msu.su
Thu May 28 21:04:31 CEST 2009


On Thursday 28 May 2009 15:58:16 Carl-Daniel Hailfinger wrote:
> On 27.05.2009 21:31, Alexander Gordeev wrote:
> > I also found the SuperIO pin, which is connected to WE pin of flash: it
> > is pin 71, PSIN/GP45 as I've learned from the datasheet. However, I was
> > only able to find it8712f datasheet which may be a bit different from
> > it8712f-a. You can obtain a foto of the chip from here:
> > http://lvk.cs.msu.su/~lasaine/it8712f-a.png
> > The pin is marked.
>
> Wow, that's very precise and helpful information. Thanks!

I did my best :)

> > I'll be happy to provide any additional information if needed.
>
> Can you please run
> superiotool -de
> and post the output to the list? That will help me use the correct
> polarity for the write enable routine.

Sure, attached.

-- 
  Alexander
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superiotool r3125
Found ITE IT8712F (id=0x8712, rev=0x5) at 0x2e
Register dump:
idx 07 20 21 22 23 24 2b
val 0a 87 12 05 01 00 00
def NA 87 12 08 00 00 00
LDN 0x00 (Floppy)
idx 30 60 61 70 74 f0 f1
val 01 03 f0 06 02 00 00
def 00 03 f0 06 02 00 00
LDN 0x01 (COM1)
idx 30 60 61 70 f0 f1 f2 f3
val 01 03 f8 04 00 50 00 7f
def 00 03 f8 04 00 50 00 7f
LDN 0x02 (COM2)
idx 30 60 61 70 f0 f1 f2 f3
val 01 02 f8 03 40 50 01 7f
def 00 02 f8 03 00 50 00 7f
LDN 0x03 (Parallel port)
idx 30 60 61 62 63 70 74 f0
val 01 03 78 00 00 07 04 08
def 00 03 78 07 78 07 03 03
LDN 0x04 (Environment controller)
idx 30 60 61 62 63 70 f0 f1  f2 f3 f4 f5 f6
val 01 02 90 00 00 00 80 00  0a 00 00 00 ff
def 00 02 90 02 30 09 00 00  00 00 00 NA NA
LDN 0x05 (Keyboard)
idx 30 60 61 62 63 70 71 f0
val 01 00 60 00 64 01 02 68
def 01 00 60 00 64 01 02 08
LDN 0x06 (Mouse)
idx 30 70 71 f0
val 00 00 02 00
def 00 0c 02 00
LDN 0x07 (GPIO)
idx 25 26 27 28 29 2a 2c 60  61 62 63 64 65 70 71 72  73 74 b0 b1 b2 b3 b4 b5  b8 b9 ba bb bc bd c0 c1  c2 c3 c4 c8 c9 ca cb cc  e0 e1 e2 e3 e4 f0 f1 f2  f3 f4 f5 f6 f7 f8 f9 fa  fb fc fd
val de 00 20 01 08 00 00 00  00 08 00 00 00 00 31 80  10 04 04 00 00 00 00 00  00 00 20 01 00 00 d2 00  00 00 08 00 00 00 00 00  00 00 00 00 00 10 40 00  00 00 00 1d 00 00 00 00  00 08 00
def 01 00 00 40 00 00 00 00  00 00 00 00 00 00 00 00  c0 00 00 00 00 00 00 00  00 00 00 00 00 00 01 00  00 40 00 01 00 00 40 00  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 NA 00
LDN 0x08 (MIDI port)
idx 30 60 61 70 f0
val 00 03 00 0a 00
def 00 03 00 0a 00
LDN 0x09 (Game port)
idx 30 60 61
val 00 02 01
def 00 02 01
LDN 0x0a (Consumer IR)
idx 30 60 61 70 f0
val 00 00 00 00 06
def 00 03 10 0b 00
Environment controller (0x0295)


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