Currently, RiscVVirtQemu supports unified code and variable store
mainly because only one pflash devices was available in qemu for
EDK2. However, this doesn't allow to map the code part as read-only.
With recent qemu enhancements, it is now possible for EDK2 to make
use of both pflash devices in RISC-V virt machine. So, add support
to create code and vars images separately. This also allows easy
firmware code updates without losing the variable store.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Andrei Warkentin <andrei.warkentin@intel.com>
Cc: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>