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# Date Author Comment
a7fd6915 02/28/2013 08:49 pm Peter Crosthwaite

m25p80.c: Use QOM classes for part differentiation

Currently, M25P80 uses an object property to differentiate between flash parts.
Changed this over to use QOM sub-classes - the actual names of the different parts
are used to create a set of dynamic classes which passes the part info as class...
03ec2f83 02/12/2013 11:03 am Kuo-Jung Su

hw/m25p80.c: add WRSR support

Atmel, SST and Intel/Numonyx serial flash tend to power up
with the software protection bits set.
And thus the new m25p80.c in linux kernel would always tries
to use WREN + WRSR to turn-off the protection.
...
a56d305a 01/27/2013 02:00 am Peter Crosthwaite

m25p80.c: Return state to IDLE after COLLECTING

Default to moving back to the IDLE state after the COLLECTING_DATA
state. For a well behaved guest this patch has no consequence, but
A bad guest could crash QEMU by using one of the erase commands
followed by a longer than 5 byte argument (undefined behaviour)....
9c17d615 12/19/2012 09:32 am Paolo Bonzini

softmmu: move include files to include/sysemu/

Signed-off-by: Paolo Bonzini <>
419336a9 10/29/2012 08:38 am Peter Crosthwaite

m25p80: Support for Quad SPI

Added the Quad mode read and write commands. Data remains serialized on a
single wire, i.e. the quad mode instructions just behave the same as single
mode, with the expection of modelling the varying number of dummy/mode bytes...
82a24990 10/10/2012 04:13 am Peter A. G. Crosthwaite

m25p80: Initial implementation of SPI flash device

Added device model for m25p80 style SPI flash family.

Signed-off-by: Peter A. G. Crosthwaite <>