Hey again.

I was advised there was a typo in my chip list.

Here: #define XMC_XM25QH128A    0x1708
Should be: #define XMC_XM25QH128A       0x7018

Anyhow, I have downloaded flashrom master, patched it with this data and
recompiled it. I'm reporting that the probing and reading appears to be
working for XM25QH128A. BIOS is now dumped. I'll test writing/erasing
once I get the spare chips.

*On a side note:*
Be sure to connect all chip pins to their respective terminals. For
example, I originally believed this XMC chip was unsupported because it
failed to probe/read while the Winbond one worked fine with the same
setup. I left the /WP and /HOLD pins unconnected in my setup, but after
connecting them both to Vcc via a 4k7 resistor the reading worked perfectly.


See yas!


> #define       XMC_ID          0x20    /* same as ST_ID */
> #define XMC_XM25QH256B        0x6019
> #define XMC_XM25QH128A        0x1708
> #define XMC_XM25QH128B        0x6018
> #define XMC_XM25QH64A 0x7017
> #define XMC_XM25QH64B 0x6017
> #define XMC_XM25QH32B 0x4016  /* 0x6016 for QPI mode */
> #define XMC_XM25QH16B 0x4015
> #define XMC_XM25QH80B 0x4014
> #define XMC_XM25QH40B 0x4013
> #define XMC_XM25QU256B        0x7019
> #define XMC_XM25QU128B        0x5018
> #define XMC_XM25QU64A 0x3817
> #define XMC_XM25QU64B 0x5017
> #define XMC_XM25QU40B 0x5013
> #define XMC_XM25QU20B 0x5012

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