Hi Stefan
Unfortunately this breaks CFI support for "normal" AMD/Spansion FLASH equipped boards. On Sequoia with Spansion GL512 I get this after applying your patch:
Please fix this and resubmit. Best would be if you could test it on a board with Spansion CFI FLASH's too.
I investigated the reproted issue and I think I've corrected it. The issue caused by my incorect conversion of cmd value in flash_make_cmd function. So we improved the procedure of conversion. I think it will be better to sent two patches: The first patch adds support of long commands and fixes conversion issues. The second patch adds M18 family command set support.
Patches were tested on Mainstone II board and two flashes: M18 portwidth=16 chipwidth=16 P30 portwidth=32 chipwidth=16 Also I tested in simulation the conversion algorithms to make sure that it works fine. Unforunately I have no abiliy to test my patch on different borads and width Spansion CFI flash.
The next two messages will contain patches.
Best regards Vasiliy