Hello,
I believe this IC isn't supported by flashrom, how am I able to support it? I have a datasheet
We have documentation on how to add support for a chip, you are very welcome to read it and try to add support.
Firstly you need to read development guide: https://www.flashrom.org/dev_guide/development_guide.html
As for documentation on how to add a new chip, there is an old doc and new doc is currently under review. You can read both!
Old doc: https://wiki.flashrom.org/Development_Guidelines#Adding/reviewing_a_new_flas... New doc under review: https://review.coreboot.org/c/flashrom/+/80205
The patch is under review, but you can read, and even, you can add comments. You also can wait when the patch is merged, and then the new doc will become available on flashrom.org.
In fact, everyone who is reading this and is interested in improving flashrom documentation, you can review the patch!
Especially for adding a new chip, it often happens to be the very first contribution to flashrom, and the doc should be understandable by a contributor without much prior experience in flashrom development. Reviews of the doc would be very helpful.