$ sudo flashrom -p ch341a_spi -w coreboot-bottom.rom
flashrom 1.5.0-devel (git:v1.4.0-49-gb6b0eba3) on Linux 6.1.0-25-amd64 (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Found Micron/Numonyx/ST flash chip "N25Q064..3E" (8192 kB, SPI) on ch341a_spi.
===
This flash part has status UNTESTED for operations: WP
The test status of this chip may have been updated in the latest development
version of flashrom. If you are running the latest development version,
please email a report to flashrom@flashrom.org if any of the above operations
work correctly for you with this flash chip. Please include the flashrom log
file for all operations you tested (see the man page for details), and mention
which mainboard or programmer you tested in the subject line.
You can also try to follow the instructions here:
https://www.flashrom.org/contrib_howtos/how_to_mark_chip_tested.html
Thanks for your help!
Failed to unlock flash status reg with wp support.
Reading old flash chip contents... done.
Erase/write done from 0 to 7fffff
Verifying flash... FAILED at 0x00484000! Expected=0xff, Found=0x34, failed byte count from 0x00000000-0x007fffff: 0x2fd2
Your flash chip is in an unknown state.
Please report this to the mailing list at flashrom@flashrom.org or
on IRC (see https://www.flashrom.org/Contact for details), thanks!

What can I do ?