cfi mx flash patch

[yamori813_yahoo.co.jp]

Summary

MX flash MX29LV320T/B datasheet say reset is 0xf0. This change is very large impact then I use option.

Test Plan

MX CFI Flash machine

[adrian]

Is this a device quirk we can instead add in a table somewhere?

[yamori813_yahoo.co.jp]

JEDEC CFI document written "Read Array data is FFh/F0h". I refer flashrom open source code. In this code probe_82802ab89 method is use 0xff and probe_jedec method is use 0xf0 by reset. probe_82802ab89 is 26 chips and probe_jedec is 128 chips in source code table. I think complete table is two big resource like as flashrom. I think option is good now.

[yamori813_yahoo.co.jp]

I saw NetBSD cfi code. That code use 0xf0 and 0xff both at cfi_reset_default method. Do you think this way?

https://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/dev/nor/cfi.c

[adrian]

I think it's fine for now. We can always fix it later!

[yamori813_yahoo.co.jp]

• use same workaround as NetBSD

[yamori813_yahoo.co.jp]

• delete option