On 02/12/14 01:51, Bill Paul wrote:

> the 
> fact that the QEMU/OVMF combo doesn't actually emulate a persistent flash 
> device.

Use
- qemu-1.6+, and
- Linux host kernel 3.7+ (for KVM support) *or* TCG, and
- a fresh OVMF, and
- pass OVMF.fd with the -pflash option instead of the -bios option.

Then the first 128KB of the OVMF.fd file will function as non-volatile
variable store. (The size of the area that is directly available for
variables is 56KB.)

This is also described in the README file (search for -pflash).

Note that OVMF may reorder your boot options (change the BootOrder
variable) if you pass any boot order specification to qemu, either with
the -boot option, or with the "bootindex" property of any device
(-device XXXX,bootindex=N option).

Laszlo


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