[Request] Dell Inspiron 17R SE (7720) BIOS: add 32GB RAM support

[segfault_bilibili]

All right! Thank you!

Please, tell me
did you manage to try 2x16gb memory on inspiron 7720?
successfully?

I would advice you to give up.

My results on Haswell are negative. I have actually tried on a IvyBridge laptop (Dell Inspiron E6430, which is supported by Coreboot) as well, negative as well.

I digged this down to the configuration registers (typo, fixed) of the integrated memory controller. It turns out that (on consumer-grade CPUs, and entry-level server E3 models) Intel does not allow fine-grained configuration on how many column address lines to be used - instead it only accepts size_mb as the configuration parameter.

That's saying, Intel literally limited the supported capacity per module to 8GB (another typo fixed, 16GB is not supported) at hardware level, yes just the overall capacity per module, not density, not column address line count (even if column address lines are multiplexed with row lines so that physically this should not be a problem).