Glasgow Embedded / Glasgow - History

firmware: include git revision in product string (-15 bytes XRAM).

In the issue #382, @VioletEternity pointed out that it is not
currently possible to find out which git commit a firmware was built.

This commit introduces the embedding of the hash of the commit
containing the last modification to the `firmware/` (git) tree
in the product string that is visible in the device properties, for
example on Linux it can be retrieved like this:

$ lsusb -d 20b7:9db1 -v | grep iProduct
iProduct 2 Glasgow Interface Explorer (git 52734ce9)

Because a commit cannot include its own hash (without a successful
preimage attack on SHA1), the commit that is updating the built-in
firmware in the `software/glasgow/device/firmware.ihex` file needs to
be separate from the commit that updates the firmware code. Because
the version is recorded for the latest change of the `firmware/`
tree, which is not modified in the second commit, it stays consistent
afterwards.

Co-authored-by: Charlotte <charlotte@lottia.net>

firmware: fix issue #382 (-88 bytes XRAM).

The issue #382 (failure of the device to enumerate when plugged into
a Windows machine for the first time) was caused by the lack of handling
of a Windows-specific descriptor. Respond to a request for this
descriptor.

Co-authored-by: Maya <maya@maybemaya.me>
Co-authored-by: Charlotte <charlotte@lottia.net>

applet.selftest: fix `leds` mode.

Fixes the following error:

TypeError: Object flipped((rec led_0 o)) cannot be converted to an
Amaranth value

software: fix fwft parameter value on all `FIFOInterface`s. NFCI.

firmware: remove config fixup functionality.

There was only a small amount of devices that required config fixup
in first place, and they should have all been fixed in the ~4 years
that have passed since the code was added. If anyone boots firmware
on a device with non-fixed EEPROM after this commit, the device will
come up with a `Z9-9999...9` serial and running `glasgow flash` with
the right revision will fix the problem.

Fixes #387.