Flashrom S25FL128L support?

How can I add support for S25FL128L on latest flashrom version?
We were given a modified flashrom long ago for flashing S25FL128L, but we want to test some new features that new flashrom offers. Thanks.

You’d probably need to add it to the flashchips.c file. Rather surprised they don’t have support for it though, it’s not like that chip is very new at this point.

is there a guide on how to do it correctly?
This is all I found about the chip and I am not sure how to verify other variables.

{
		.vendor		= "Spansion”, /* checked
		.name		= "S25FL128L”, /* checked
		.bustype	= BUS_SPI, /* checked
		.manufacture_id	= SPANSION_ID, /* checked
		.model_id	= SPANSION_S25FL128, /* checked
		.total_size	= 16384, /* checked
		.page_size	= 256, /* checked
		.feature_bits	= FEATURE_WRSR_WREN,
		.tested		= TEST_UNTESTED,
		.probe		= probe_spi_rdid,
		.probe_timing	= TIMING_ZERO,
		.block_erasers	=
		{
			{
				.eraseblocks = { {256 * 1024, 64} },
				.block_erase = spi_block_erase_d8,
			},
		},
		.printlock	= spi_prettyprint_status_register_bp2_srwd,
		.unlock		= spi_disable_blockprotect_bp2_srwd,
		.write		= spi_chip_write_256,
		.read		= spi_chip_read,
		.voltage	= {2700, 3600}, /* checked
},

Seems to be one here: https://www.flashrom.org/Development_Guidelines#Adding.2Freviewing_a_new_flash_chip