I've had success with READ, ERASE, WRITE with this part.
I'm unsure how to test PROBE and WP, but I am happy to do both if you send me some guidance as to what to do.
Thanks,
Bill
flashrom 1.4.0-devel (git:) on Linux 5.10.0-21-amd64 (x86_64) flashrom is free software, get the source code at https://flashrom.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). Found Spansion flash chip "S25FL128L" (16384 kB, SPI) on ch341a_spi. === This flash part has status UNTESTED for operations: PROBE READ ERASE WRITE 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. Thanks for your help!
READ is working
Reading flash... [READ] 0% complete... [READ] 1% complete... [READ] 2% complete... [READ] 3% complete... [READ] 4% complete... [READ] 5% complete... [READ] 6% complete... [READ] 7% complete... [READ] 8% complete... [READ] 9% complete... [READ] 10% complete... [READ] 11% complete... [READ] 12% complete... [READ] 13% complete... [READ] 14% complete... [READ] 15% complete... [READ] 16% complete... [READ] 17% complete... [READ] 18% complete... [READ] 19% complete... [READ] 20% complete... [READ] 21% complete... [READ] 22% complete... [READ] 23% complete... [READ] 24% complete... [READ] 25% complete... [READ] 26% complete... [READ] 27% complete... [READ] 28% complete... [READ] 29% complete... [READ] 30% complete... [READ] 31% complete... [READ] 32% complete... [READ] 33% complete... [READ] 34% complete... [READ] 35% complete... [READ] 36% complete... [READ] 37% complete... [READ] 38% complete... [READ] 39% complete... [READ] 40% complete... [READ] 41% complete... [READ] 42% complete... [READ] 43% complete... [READ] 44% complete... [READ] 45% complete... [READ] 46% complete... [READ] 47% complete... [READ] 48% complete... [READ] 49% complete... [READ] 50% complete... [READ] 51% complete... [READ] 52% complete... [READ] 53% complete... [READ] 54% complete... [READ] 55% complete... [READ] 56% complete... [READ] 57% complete... [READ] 58% complete... [READ] 59% complete... [READ] 60% complete... [READ] 61% complete... [READ] 62% complete... [READ] 63% complete... [READ] 64% complete... [READ] 65% complete... [READ] 66% complete... [READ] 67% complete... [READ] 68% complete... [READ] 69% complete... [READ] 70% complete... [READ] 71% complete... [READ] 72% complete... [READ] 73% complete... [READ] 74% complete... [READ] 75% complete... [READ] 76% complete... [READ] 77% complete... [READ] 78% complete... [READ] 79% complete... [READ] 80% complete... [READ] 81% complete... [READ] 82% complete... [READ] 83% complete... [READ] 84% complete... [READ] 85% complete... [READ] 86% complete... [READ] 87% complete... [READ] 88% complete... [READ] 89% complete... [READ] 90% complete... [READ] 91% complete... [READ] 92% complete... [READ] 93% complete... [READ] 94% complete... [READ] 95% complete... [READ] 96% complete... [READ] 97% complete... [READ] 98% complete... [READ] 99% complete... [READ] 100% complete... done.
WRITE is working
Reading old flash chip contents... [READ] 0% complete... done. [WRITE] 0% complete... Erase/write done from 10000 to 1ffff Verifying flash... VERIFIED.
ERASE is working
[READ] 0% complete... Erase/write done from 10000 to 1ffff
Bill,
Thank you so much for reporting! Sorry for some delay in response. I made a patch to mark the chip as tested: https://review.coreboot.org/c/flashrom/+/75604 , if you have an account in gerrit you can approve it (or add comment). You tested probing too, because it is called when reading and writing anyway.